./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8 --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 d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:08:41,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:08:41,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:08:41,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:08:41,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:08:41,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:08:41,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:08:41,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:08:41,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:08:41,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:08:41,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:08:41,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:08:41,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:08:41,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:08:41,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:08:41,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:08:41,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:08:41,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:08:41,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:08:41,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:08:41,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:08:41,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:08:41,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:08:41,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:08:41,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:08:41,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:08:41,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:08:41,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:08:41,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:08:41,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:08:41,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:08:41,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:08:41,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:08:41,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:08:41,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:08:41,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:08:41,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:08:41,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:08:41,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:08:41,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:08:41,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:08:41,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:08:41,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:08:41,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:08:41,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:08:41,693 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:08:41,693 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:08:41,694 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:08:41,694 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:08:41,694 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:08:41,700 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:08:41,701 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:08:41,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:08:41,702 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:08:41,702 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:08:41,703 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:08:41,703 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:08:41,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:08:41,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:08:41,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:08:41,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:08:41,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:08:41,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:08:41,705 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:08:41,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:08:41,706 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:08:41,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:08:41,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:08:41,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:08:41,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:41,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:08:41,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:08:41,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:08:41,710 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:08:41,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:08:41,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:08:41,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:08:41,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:08:41,711 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_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 [2021-11-07 02:08:42,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:08:42,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:08:42,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:08:42,064 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:08:42,064 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:08:42,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-07 02:08:42,134 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/data/e253d275b/1c73684edde94afc911090dcee6bb387/FLAGf99a43fe0 [2021-11-07 02:08:43,017 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:08:43,018 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-07 02:08:43,065 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/data/e253d275b/1c73684edde94afc911090dcee6bb387/FLAGf99a43fe0 [2021-11-07 02:08:43,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/data/e253d275b/1c73684edde94afc911090dcee6bb387 [2021-11-07 02:08:43,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:08:43,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:08:43,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:43,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:08:43,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:08:43,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:43" (1/1) ... [2021-11-07 02:08:43,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5957ffeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:43, skipping insertion in model container [2021-11-07 02:08:43,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:43" (1/1) ... [2021-11-07 02:08:43,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:08:43,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:43,963 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_837acfdd-d33c-4e6c-a575-effa0ef9d530/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2021-11-07 02:08:43,969 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_837acfdd-d33c-4e6c-a575-effa0ef9d530/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2021-11-07 02:08:43,987 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:08:43,992 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:08:44,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:44,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:44,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:44,820 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:44,821 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:44,836 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:44,837 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:44,839 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:44,839 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:44,842 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:44,843 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:44,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:44,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:45,347 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:08:45,349 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:08:45,353 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:08:45,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:08:45,357 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:08:45,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:08:45,360 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:08:45,361 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:08:45,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:08:45,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:08:45,576 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:08:45,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:45,656 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) [2021-11-07 02:08:45,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ce77558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:45, skipping insertion in model container [2021-11-07 02:08:45,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:45,658 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:08:45,660 INFO L168 Benchmark]: Toolchain (without parser) took 2112.11 ms. Allocated memory is still 119.5 MB. Free memory was 82.5 MB in the beginning and 60.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:08:45,661 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 119.5 MB. Free memory was 73.2 MB in the beginning and 73.1 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:08:45,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2094.62 ms. Allocated memory is still 119.5 MB. Free memory was 82.2 MB in the beginning and 60.9 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:08:45,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 119.5 MB. Free memory was 73.2 MB in the beginning and 73.1 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2094.62 ms. Allocated memory is still 119.5 MB. Free memory was 82.2 MB in the beginning and 60.9 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7037]: 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_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8 --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 d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:08:47,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:08:47,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:08:48,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:08:48,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:08:48,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:08:48,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:08:48,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:08:48,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:08:48,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:08:48,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:08:48,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:08:48,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:08:48,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:08:48,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:08:48,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:08:48,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:08:48,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:08:48,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:08:48,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:08:48,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:08:48,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:08:48,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:08:48,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:08:48,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:08:48,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:08:48,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:08:48,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:08:48,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:08:48,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:08:48,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:08:48,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:08:48,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:08:48,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:08:48,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:08:48,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:08:48,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:08:48,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:08:48,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:08:48,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:08:48,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:08:48,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:08:48,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:08:48,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:08:48,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:08:48,197 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:08:48,197 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:08:48,198 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:08:48,198 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:08:48,198 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:08:48,198 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:08:48,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:08:48,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:08:48,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:08:48,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:08:48,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:08:48,202 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:08:48,202 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:08:48,203 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:08:48,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:08:48,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:08:48,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:08:48,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:08:48,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:08:48,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:08:48,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:48,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:08:48,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:08:48,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:08:48,206 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:08:48,206 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:48,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:08:48,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:08:48,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:08:48,207 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_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 [2021-11-07 02:08:48,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:08:48,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:08:48,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:08:48,645 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:08:48,646 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:08:48,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-07 02:08:48,731 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/data/d290b2950/d8b3301a933848b9afe301a2d2089da7/FLAGc794ab23b [2021-11-07 02:08:49,554 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:08:49,554 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-07 02:08:49,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/data/d290b2950/d8b3301a933848b9afe301a2d2089da7/FLAGc794ab23b [2021-11-07 02:08:49,641 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/data/d290b2950/d8b3301a933848b9afe301a2d2089da7 [2021-11-07 02:08:49,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:08:49,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:08:49,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:49,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:08:49,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:08:49,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:49" (1/1) ... [2021-11-07 02:08:49,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56bc3343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:49, skipping insertion in model container [2021-11-07 02:08:49,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:49" (1/1) ... [2021-11-07 02:08:49,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:08:49,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:50,073 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_837acfdd-d33c-4e6c-a575-effa0ef9d530/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2021-11-07 02:08:50,098 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_837acfdd-d33c-4e6c-a575-effa0ef9d530/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2021-11-07 02:08:50,130 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:08:50,135 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:08:50,927 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:50,928 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:50,928 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:50,929 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:50,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:50,947 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:50,948 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:50,950 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:50,951 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:50,954 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:50,955 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:50,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:50,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,313 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:08:51,314 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:08:51,315 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:08:51,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:08:51,318 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:08:51,319 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:08:51,320 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:08:51,320 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:08:51,321 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:08:51,337 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:08:51,496 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:08:51,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:51,544 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:08:51,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:51,572 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_837acfdd-d33c-4e6c-a575-effa0ef9d530/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2021-11-07 02:08:51,573 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_837acfdd-d33c-4e6c-a575-effa0ef9d530/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2021-11-07 02:08:51,574 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:08:51,575 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:08:51,636 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,637 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,637 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,638 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,639 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,647 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,648 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,649 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,650 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,651 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,653 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,728 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:08:51,729 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:08:51,730 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:08:51,741 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:08:51,743 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:08:51,744 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:08:51,744 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:08:51,745 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:08:51,745 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:08:51,746 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:08:51,787 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:08:51,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:51,826 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:08:51,849 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_837acfdd-d33c-4e6c-a575-effa0ef9d530/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2021-11-07 02:08:51,850 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_837acfdd-d33c-4e6c-a575-effa0ef9d530/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2021-11-07 02:08:51,851 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:08:51,852 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:08:51,916 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,916 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,917 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,917 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,918 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,935 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,936 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,936 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:51,936 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:08:52,010 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:08:52,011 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:08:52,011 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:08:52,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:08:52,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:08:52,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:08:52,014 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:08:52,014 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:08:52,015 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:08:52,015 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:08:52,052 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:08:52,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:52,448 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:08:52,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:52 WrapperNode [2021-11-07 02:08:52,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:52,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:52,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:08:52,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:08:52,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:52" (1/1) ... [2021-11-07 02:08:52,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:52" (1/1) ... [2021-11-07 02:08:52,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:52,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:08:52,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:08:52,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:08:52,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:52" (1/1) ... [2021-11-07 02:08:52,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:52" (1/1) ... [2021-11-07 02:08:52,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:52" (1/1) ... [2021-11-07 02:08:52,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:52" (1/1) ... [2021-11-07 02:08:52,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:52" (1/1) ... [2021-11-07 02:08:52,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:52" (1/1) ... [2021-11-07 02:08:52,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:52" (1/1) ... [2021-11-07 02:08:52,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:08:52,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:08:52,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:08:52,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:08:52,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:52" (1/1) ... [2021-11-07 02:08:52,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:52,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:52,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:08:52,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:08:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:08:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:08:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:08:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:08:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:08:52,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:08:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:08:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:08:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:08:54,059 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:08:54,060 INFO L299 CfgBuilder]: Removed 80 assume(true) statements. [2021-11-07 02:08:54,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:54 BoogieIcfgContainer [2021-11-07 02:08:54,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:08:54,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:08:54,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:08:54,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:08:54,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:08:49" (1/3) ... [2021-11-07 02:08:54,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28eef7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:54, skipping insertion in model container [2021-11-07 02:08:54,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:52" (2/3) ... [2021-11-07 02:08:54,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28eef7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:54, skipping insertion in model container [2021-11-07 02:08:54,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:54" (3/3) ... [2021-11-07 02:08:54,082 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_push_back_harness.i [2021-11-07 02:08:54,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:08:54,089 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 02:08:54,142 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:08:54,150 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 [2021-11-07 02:08:54,150 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 02:08:54,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 145 states have (on average 1.5310344827586206) internal successors, (222), 156 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 02:08:54,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:54,178 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:54,178 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 02:08:54,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:54,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1015878758, now seen corresponding path program 1 times [2021-11-07 02:08:54,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:54,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245875683] [2021-11-07 02:08:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:54,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:54,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:54,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:54,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:08:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:54,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:08:54,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:54,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:54,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:54,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:54,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245875683] [2021-11-07 02:08:54,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245875683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:54,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:54,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:08:54,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961345790] [2021-11-07 02:08:54,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:08:54,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:54,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:08:54,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:08:54,806 INFO L87 Difference]: Start difference. First operand has 157 states, 145 states have (on average 1.5310344827586206) internal successors, (222), 156 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:54,864 INFO L93 Difference]: Finished difference Result 310 states and 439 transitions. [2021-11-07 02:08:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:08:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 02:08:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:54,875 INFO L225 Difference]: With dead ends: 310 [2021-11-07 02:08:54,875 INFO L226 Difference]: Without dead ends: 152 [2021-11-07 02:08:54,879 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:08:54,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-07 02:08:54,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-07 02:08:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 141 states have (on average 1.3971631205673758) internal successors, (197), 151 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:54,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 197 transitions. [2021-11-07 02:08:54,927 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 197 transitions. Word has length 37 [2021-11-07 02:08:54,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:54,928 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 197 transitions. [2021-11-07 02:08:54,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:54,928 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 197 transitions. [2021-11-07 02:08:54,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 02:08:54,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:54,929 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:54,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:08:55,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:55,130 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 02:08:55,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:55,131 INFO L85 PathProgramCache]: Analyzing trace with hash 422083482, now seen corresponding path program 1 times [2021-11-07 02:08:55,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:55,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615197861] [2021-11-07 02:08:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:55,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:55,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:55,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:55,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:08:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:55,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:08:55,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:55,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:55,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:55,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615197861] [2021-11-07 02:08:55,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615197861] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:55,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:55,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:08:55,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548382695] [2021-11-07 02:08:55,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:55,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:55,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:55,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:55,780 INFO L87 Difference]: Start difference. First operand 152 states and 197 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:55,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:55,880 INFO L93 Difference]: Finished difference Result 294 states and 382 transitions. [2021-11-07 02:08:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:55,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 02:08:55,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:55,887 INFO L225 Difference]: With dead ends: 294 [2021-11-07 02:08:55,887 INFO L226 Difference]: Without dead ends: 152 [2021-11-07 02:08:55,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:08:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-07 02:08:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-07 02:08:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 141 states have (on average 1.3829787234042554) internal successors, (195), 151 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 195 transitions. [2021-11-07 02:08:55,912 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 195 transitions. Word has length 37 [2021-11-07 02:08:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:55,913 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 195 transitions. [2021-11-07 02:08:55,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 195 transitions. [2021-11-07 02:08:55,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 02:08:55,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:55,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:55,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:56,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:56,131 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 02:08:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:56,132 INFO L85 PathProgramCache]: Analyzing trace with hash -964119912, now seen corresponding path program 1 times [2021-11-07 02:08:56,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:56,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043680062] [2021-11-07 02:08:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:56,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:56,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:56,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:56,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:08:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:56,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:56,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:56,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:56,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:56,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043680062] [2021-11-07 02:08:56,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043680062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:56,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:56,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:08:56,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353087898] [2021-11-07 02:08:56,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:56,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:56,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:56,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:56,577 INFO L87 Difference]: Start difference. First operand 152 states and 195 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:56,636 INFO L93 Difference]: Finished difference Result 316 states and 394 transitions. [2021-11-07 02:08:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:56,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 02:08:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:56,639 INFO L225 Difference]: With dead ends: 316 [2021-11-07 02:08:56,642 INFO L226 Difference]: Without dead ends: 192 [2021-11-07 02:08:56,643 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:08:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-07 02:08:56,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 152. [2021-11-07 02:08:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 141 states have (on average 1.375886524822695) internal successors, (194), 151 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 194 transitions. [2021-11-07 02:08:56,671 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 194 transitions. Word has length 37 [2021-11-07 02:08:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:56,672 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 194 transitions. [2021-11-07 02:08:56,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:56,677 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 194 transitions. [2021-11-07 02:08:56,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 02:08:56,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:56,678 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:56,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:56,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:56,895 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 02:08:56,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:56,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1303112067, now seen corresponding path program 1 times [2021-11-07 02:08:56,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:56,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340474077] [2021-11-07 02:08:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:56,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:56,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:56,898 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:56,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:08:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:57,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:08:57,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:57,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:57,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:57,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340474077] [2021-11-07 02:08:57,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340474077] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:57,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:57,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:08:57,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50933019] [2021-11-07 02:08:57,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:08:57,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:57,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:08:57,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:08:57,501 INFO L87 Difference]: Start difference. First operand 152 states and 194 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:57,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:57,685 INFO L93 Difference]: Finished difference Result 325 states and 406 transitions. [2021-11-07 02:08:57,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:08:57,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-07 02:08:57,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:57,687 INFO L225 Difference]: With dead ends: 325 [2021-11-07 02:08:57,687 INFO L226 Difference]: Without dead ends: 200 [2021-11-07 02:08:57,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:08:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-07 02:08:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 152. [2021-11-07 02:08:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 141 states have (on average 1.3617021276595744) internal successors, (192), 151 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 192 transitions. [2021-11-07 02:08:57,696 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 192 transitions. Word has length 39 [2021-11-07 02:08:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:57,696 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 192 transitions. [2021-11-07 02:08:57,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 192 transitions. [2021-11-07 02:08:57,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 02:08:57,698 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:57,698 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:57,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:57,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:57,915 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 02:08:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:57,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1958868289, now seen corresponding path program 1 times [2021-11-07 02:08:57,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:57,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170465079] [2021-11-07 02:08:57,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:57,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:57,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:57,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:57,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:08:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:58,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:08:58,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:58,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:58,552 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:58,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170465079] [2021-11-07 02:08:58,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170465079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:58,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:58,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-07 02:08:58,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930505300] [2021-11-07 02:08:58,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:08:58,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:58,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:08:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:08:58,554 INFO L87 Difference]: Start difference. First operand 152 states and 192 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:58,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:58,872 INFO L93 Difference]: Finished difference Result 448 states and 556 transitions. [2021-11-07 02:08:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:08:58,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 02:08:58,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:58,876 INFO L225 Difference]: With dead ends: 448 [2021-11-07 02:08:58,876 INFO L226 Difference]: Without dead ends: 322 [2021-11-07 02:08:58,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:08:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-07 02:08:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 154. [2021-11-07 02:08:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 143 states have (on average 1.3566433566433567) internal successors, (194), 153 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 194 transitions. [2021-11-07 02:08:58,886 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 194 transitions. Word has length 41 [2021-11-07 02:08:58,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:58,886 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 194 transitions. [2021-11-07 02:08:58,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 194 transitions. [2021-11-07 02:08:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 02:08:58,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:58,888 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:58,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:59,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:59,105 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 02:08:59,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:59,105 INFO L85 PathProgramCache]: Analyzing trace with hash -849015639, now seen corresponding path program 1 times [2021-11-07 02:08:59,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:59,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725062725] [2021-11-07 02:08:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:59,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:59,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:59,108 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:59,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:08:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:59,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:08:59,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:59,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:59,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:59,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725062725] [2021-11-07 02:08:59,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725062725] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:59,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:59,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 3] imperfect sequences [] total 7 [2021-11-07 02:08:59,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810709054] [2021-11-07 02:08:59,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:08:59,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:59,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:08:59,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:08:59,757 INFO L87 Difference]: Start difference. First operand 154 states and 194 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:00,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:00,232 INFO L93 Difference]: Finished difference Result 508 states and 626 transitions. [2021-11-07 02:09:00,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:09:00,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 02:09:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:00,240 INFO L225 Difference]: With dead ends: 508 [2021-11-07 02:09:00,240 INFO L226 Difference]: Without dead ends: 381 [2021-11-07 02:09:00,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:09:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-07 02:09:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 158. [2021-11-07 02:09:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 157 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:00,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 199 transitions. [2021-11-07 02:09:00,253 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 199 transitions. Word has length 42 [2021-11-07 02:09:00,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:00,253 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 199 transitions. [2021-11-07 02:09:00,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:00,254 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 199 transitions. [2021-11-07 02:09:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 02:09:00,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:00,255 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:00,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:00,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:00,479 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 02:09:00,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash 524572173, now seen corresponding path program 1 times [2021-11-07 02:09:00,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:00,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715303703] [2021-11-07 02:09:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:00,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:00,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:00,482 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:00,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:09:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:00,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:09:00,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:01,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:01,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:01,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715303703] [2021-11-07 02:09:01,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715303703] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:01,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:01,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 02:09:01,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446352636] [2021-11-07 02:09:01,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:09:01,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:01,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:09:01,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:09:01,216 INFO L87 Difference]: Start difference. First operand 158 states and 199 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:01,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:01,618 INFO L93 Difference]: Finished difference Result 462 states and 573 transitions. [2021-11-07 02:09:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:09:01,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 02:09:01,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:01,621 INFO L225 Difference]: With dead ends: 462 [2021-11-07 02:09:01,621 INFO L226 Difference]: Without dead ends: 324 [2021-11-07 02:09:01,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:09:01,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-07 02:09:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 160. [2021-11-07 02:09:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 1.348993288590604) internal successors, (201), 159 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2021-11-07 02:09:01,652 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 47 [2021-11-07 02:09:01,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:01,652 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2021-11-07 02:09:01,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:01,653 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2021-11-07 02:09:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 02:09:01,654 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:01,654 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:01,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:01,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:01,871 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 02:09:01,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1034045263, now seen corresponding path program 1 times [2021-11-07 02:09:01,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:01,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625389836] [2021-11-07 02:09:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:01,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:01,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:01,873 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:01,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:09:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:02,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:09:02,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:02,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:02,476 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:02,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625389836] [2021-11-07 02:09:02,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625389836] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:02,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:02,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:09:02,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344323008] [2021-11-07 02:09:02,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:09:02,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:02,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:09:02,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:09:02,478 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:02,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:02,581 INFO L93 Difference]: Finished difference Result 380 states and 463 transitions. [2021-11-07 02:09:02,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:09:02,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 02:09:02,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:02,583 INFO L225 Difference]: With dead ends: 380 [2021-11-07 02:09:02,584 INFO L226 Difference]: Without dead ends: 250 [2021-11-07 02:09:02,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:09:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-07 02:09:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 160. [2021-11-07 02:09:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 1.342281879194631) internal successors, (200), 159 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 200 transitions. [2021-11-07 02:09:02,598 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 200 transitions. Word has length 47 [2021-11-07 02:09:02,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:02,601 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 200 transitions. [2021-11-07 02:09:02,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 200 transitions. [2021-11-07 02:09:02,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 02:09:02,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:02,603 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:02,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:02,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:02,823 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 02:09:02,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:02,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2076397329, now seen corresponding path program 1 times [2021-11-07 02:09:02,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:02,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752270843] [2021-11-07 02:09:02,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:02,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:02,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:02,825 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:02,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:09:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:03,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 02:09:03,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:03,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-07 02:09:03,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-07 02:09:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:03,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:04,115 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:04,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752270843] [2021-11-07 02:09:04,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752270843] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:04,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [698739299] [2021-11-07 02:09:04,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:04,116 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:04,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:04,124 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:04,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:09:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:04,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:09:04,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:09:04,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:09:04,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [698739299] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:04,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:09:04,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [8, 8] total 14 [2021-11-07 02:09:04,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026936055] [2021-11-07 02:09:04,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:09:04,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:09:04,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:09:04,900 INFO L87 Difference]: Start difference. First operand 160 states and 200 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:05,094 INFO L93 Difference]: Finished difference Result 432 states and 521 transitions. [2021-11-07 02:09:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:09:05,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 02:09:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:05,096 INFO L225 Difference]: With dead ends: 432 [2021-11-07 02:09:05,096 INFO L226 Difference]: Without dead ends: 301 [2021-11-07 02:09:05,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-07 02:09:05,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-07 02:09:05,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 160. [2021-11-07 02:09:05,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 1.3355704697986577) internal successors, (199), 159 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 199 transitions. [2021-11-07 02:09:05,107 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 199 transitions. Word has length 49 [2021-11-07 02:09:05,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:05,107 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 199 transitions. [2021-11-07 02:09:05,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:05,108 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 199 transitions. [2021-11-07 02:09:05,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 02:09:05,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:05,111 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:09:05,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:05,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:05,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:05,515 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 02:09:05,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash -309833065, now seen corresponding path program 1 times [2021-11-07 02:09:05,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:05,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352800392] [2021-11-07 02:09:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:05,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:05,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:05,517 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:05,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:09:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:06,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-07 02:09:06,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:06,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-07 02:09:06,287 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 02:09:06,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2021-11-07 02:09:09,111 INFO L354 Elim1Store]: treesize reduction 1628, result has 11.4 percent of original size [2021-11-07 02:09:09,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 4163 treesize of output 2462 [2021-11-07 02:09:09,778 INFO L354 Elim1Store]: treesize reduction 1278, result has 10.3 percent of original size [2021-11-07 02:09:09,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 19437 treesize of output 8200 [2021-11-07 02:09:10,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:10,331 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-07 02:09:10,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 21 [2021-11-07 02:09:10,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:10,588 INFO L354 Elim1Store]: treesize reduction 23, result has 48.9 percent of original size [2021-11-07 02:09:10,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 646 treesize of output 506 [2021-11-07 02:09:10,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:10,838 INFO L354 Elim1Store]: treesize reduction 111, result has 6.7 percent of original size [2021-11-07 02:09:10,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 8747 treesize of output 6725 [2021-11-07 02:09:11,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:11,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 100 [2021-11-07 02:09:11,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:11,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 74 [2021-11-07 02:09:11,869 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-11-07 02:09:11,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 216 treesize of output 157 [2021-11-07 02:09:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:12,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:14,817 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset (_ BitVec 64))) (= (select (select (let ((.cse1 (bvadd (_ bv8 64) c_ULTIMATE.start_aws_linked_list_insert_before_~before.offset))) (let ((.cse0 (let ((.cse5 (bvadd (_ bv8 64) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base (let ((.cse6 (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset c_ULTIMATE.start_aws_linked_list_insert_before_~before.base))) (store .cse6 .cse5 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base .cse6) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse1)))) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse1)) (.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base (let ((.cse4 (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset c_ULTIMATE.start_aws_linked_list_insert_before_~before.offset))) (store .cse4 .cse5 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base .cse4) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse1)))))) (store .cse2 .cse3 (store (select .cse2 .cse3) (select (select .cse2 c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse1) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset)))))) (store .cse0 c_ULTIMATE.start_aws_linked_list_insert_before_~before.base (store (select .cse0 c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse1 ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset)))) c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset) c_ULTIMATE.start_aws_linked_list_insert_before_~before.offset)) (forall ((ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset (_ BitVec 64))) (= (select (select (let ((.cse8 (bvadd (_ bv8 64) c_ULTIMATE.start_aws_linked_list_insert_before_~before.offset))) (let ((.cse7 (let ((.cse12 (bvadd (_ bv8 64) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset))) (let ((.cse9 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base (let ((.cse13 (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset c_ULTIMATE.start_aws_linked_list_insert_before_~before.base))) (store .cse13 .cse12 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base .cse13) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse8)))))) (let ((.cse10 (select (select .cse9 c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse8))) (store .cse9 .cse10 (store (select .cse9 .cse10) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base (let ((.cse11 (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset c_ULTIMATE.start_aws_linked_list_insert_before_~before.offset))) (store .cse11 .cse12 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base .cse11) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse8)))) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse8) c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base))))))) (store .cse7 c_ULTIMATE.start_aws_linked_list_insert_before_~before.base (store (select .cse7 c_ULTIMATE.start_aws_linked_list_insert_before_~before.base) .cse8 c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base)))) c_ULTIMATE.start_aws_linked_list_insert_before_~to_add.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset) c_ULTIMATE.start_aws_linked_list_insert_before_~before.base))) is different from false [2021-11-07 02:09:18,356 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset (_ BitVec 64))) (let ((.cse6 (bvadd c_ULTIMATE.start_aws_linked_list_push_back_~list.offset (_ bv16 64)))) (= (select (select (let ((.cse1 (bvadd c_ULTIMATE.start_aws_linked_list_push_back_~list.offset (_ bv24 64)))) (let ((.cse0 (let ((.cse5 (bvadd (_ bv8 64) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_push_back_~node.base (let ((.cse7 (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_push_back_~node.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset c_ULTIMATE.start_aws_linked_list_push_back_~list.base))) (store .cse7 .cse5 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_push_back_~node.base .cse7) c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse1)))) c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse1)) (.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_push_back_~node.base (let ((.cse4 (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_push_back_~node.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset .cse6))) (store .cse4 .cse5 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_push_back_~node.base .cse4) c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse1)))))) (store .cse2 .cse3 (store (select .cse2 .cse3) (select (select .cse2 c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse1) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset)))))) (store .cse0 c_ULTIMATE.start_aws_linked_list_push_back_~list.base (store (select .cse0 c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse1 ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset)))) c_ULTIMATE.start_aws_linked_list_push_back_~node.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset) .cse6))) (forall ((ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset (_ BitVec 64))) (= (select (select (let ((.cse9 (bvadd c_ULTIMATE.start_aws_linked_list_push_back_~list.offset (_ bv24 64)))) (let ((.cse8 (let ((.cse13 (bvadd (_ bv8 64) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset))) (let ((.cse10 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_push_back_~node.base (let ((.cse14 (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_push_back_~node.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset c_ULTIMATE.start_aws_linked_list_push_back_~list.base))) (store .cse14 .cse13 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_linked_list_push_back_~node.base .cse14) c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse9)))))) (let ((.cse11 (select (select .cse10 c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse9))) (store .cse10 .cse11 (store (select .cse10 .cse11) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_push_back_~node.base (let ((.cse12 (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_push_back_~node.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset (bvadd c_ULTIMATE.start_aws_linked_list_push_back_~list.offset (_ bv16 64))))) (store .cse12 .cse13 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_linked_list_push_back_~node.base .cse12) c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse9)))) c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse9) c_ULTIMATE.start_aws_linked_list_push_back_~node.base))))))) (store .cse8 c_ULTIMATE.start_aws_linked_list_push_back_~list.base (store (select .cse8 c_ULTIMATE.start_aws_linked_list_push_back_~list.base) .cse9 c_ULTIMATE.start_aws_linked_list_push_back_~node.base)))) c_ULTIMATE.start_aws_linked_list_push_back_~node.base) ULTIMATE.start_aws_linked_list_insert_before_~to_add.offset) c_ULTIMATE.start_aws_linked_list_push_back_~list.base))) is different from false [2021-11-07 02:09:31,624 WARN L207 SmtUtils]: Spent 5.27 s on a formula simplification that was a NOOP. DAG size: 57 [2021-11-07 02:09:50,859 WARN L207 SmtUtils]: Spent 9.08 s on a formula simplification that was a NOOP. DAG size: 60 [2021-11-07 02:09:53,216 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:53,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6287 treesize of output 5996 [2021-11-07 02:10:54,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:54,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 204 [2021-11-07 02:10:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:56,781 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:56,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352800392] [2021-11-07 02:10:56,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352800392] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:56,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [670408971] [2021-11-07 02:10:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:56,782 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:56,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:10:56,784 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:10:56,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837acfdd-d33c-4e6c-a575-effa0ef9d530/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:10:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:58,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-07 02:10:58,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:58,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-07 02:11:01,199 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 02:11:01,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2021-11-07 02:11:09,902 INFO L354 Elim1Store]: treesize reduction 261, result has 15.8 percent of original size [2021-11-07 02:11:09,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 365 treesize of output 246 [2021-11-07 02:11:10,488 INFO L354 Elim1Store]: treesize reduction 217, result has 25.7 percent of original size [2021-11-07 02:11:10,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 117 treesize of output 129 [2021-11-07 02:11:12,771 INFO L354 Elim1Store]: treesize reduction 86, result has 3.4 percent of original size [2021-11-07 02:11:12,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 152 treesize of output 89 [2021-11-07 02:11:12,832 INFO L354 Elim1Store]: treesize reduction 70, result has 4.1 percent of original size [2021-11-07 02:11:12,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 36 [2021-11-07 02:11:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:11:12,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:56,190 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:56,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8155 treesize of output 7708 [2021-11-07 02:12:30,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 790726 treesize of output 754990 [2021-11-07 02:13:37,170 WARN L207 SmtUtils]: Spent 1.11 m on a formula simplification. DAG size of input: 611 DAG size of output: 611 [2021-11-07 02:13:56,098 WARN L207 SmtUtils]: Spent 11.64 s on a formula simplification. DAG size of input: 575 DAG size of output: 575 [2021-11-07 02:14:15,087 WARN L207 SmtUtils]: Spent 5.60 s on a formula simplification. DAG size of input: 570 DAG size of output: 570 [2021-11-07 02:14:32,519 WARN L207 SmtUtils]: Spent 5.32 s on a formula simplification. DAG size of input: 570 DAG size of output: 570 [2021-11-07 02:14:44,301 WARN L207 SmtUtils]: Spent 8.78 s on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2021-11-07 02:15:27,490 WARN L207 SmtUtils]: Spent 9.18 s on a formula simplification. DAG size of input: 570 DAG size of output: 570 [2021-11-07 02:16:08,177 WARN L207 SmtUtils]: Spent 5.70 s on a formula simplification. DAG size of input: 556 DAG size of output: 556 [2021-11-07 02:16:24,672 WARN L207 SmtUtils]: Spent 5.08 s on a formula simplification. DAG size of input: 553 DAG size of output: 553 [2021-11-07 02:20:25,956 WARN L207 SmtUtils]: Spent 5.26 s on a formula simplification. DAG size of input: 551 DAG size of output: 551 [2021-11-07 02:20:40,892 WARN L207 SmtUtils]: Spent 5.49 s on a formula simplification. DAG size of input: 551 DAG size of output: 551 [2021-11-07 02:20:48,693 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification. DAG size of input: 551 DAG size of output: 551 [2021-11-07 02:21:04,009 WARN L207 SmtUtils]: Spent 6.34 s on a formula simplification. DAG size of input: 550 DAG size of output: 550 [2021-11-07 02:21:13,841 WARN L207 SmtUtils]: Spent 5.61 s on a formula simplification. DAG size of input: 551 DAG size of output: 551 [2021-11-07 02:21:39,617 WARN L207 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 558 DAG size of output: 558 [2021-11-07 02:21:53,488 WARN L207 SmtUtils]: Spent 5.44 s on a formula simplification. DAG size of input: 556 DAG size of output: 556 [2021-11-07 02:22:01,272 WARN L207 SmtUtils]: Spent 5.17 s on a formula simplification. DAG size of input: 556 DAG size of output: 556 [2021-11-07 02:22:28,387 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification. DAG size of input: 556 DAG size of output: 556 [2021-11-07 02:22:36,404 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification. DAG size of input: 554 DAG size of output: 554 [2021-11-07 02:22:49,939 WARN L207 SmtUtils]: Spent 5.55 s on a formula simplification. DAG size of input: 553 DAG size of output: 553