./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P --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 74909622391d8d6688f7cf92b1187b85ab387a71d6e4222379ac00e3d2b34d56 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:35:39,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:35:39,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:35:39,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:35:39,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:35:39,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:35:39,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:35:39,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:35:39,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:35:39,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:35:39,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:35:39,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:35:39,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:35:39,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:35:39,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:35:39,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:35:39,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:35:39,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:35:39,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:35:39,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:35:39,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:35:39,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:35:39,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:35:39,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:35:39,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:35:39,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:35:39,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:35:39,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:35:39,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:35:39,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:35:39,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:35:39,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:35:39,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:35:39,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:35:39,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:35:39,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:35:39,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:35:39,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:35:39,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:35:39,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:35:39,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:35:39,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:35:39,704 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:35:39,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:35:39,705 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:35:39,706 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:35:39,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:35:39,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:35:39,714 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:35:39,714 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:35:39,714 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:35:39,714 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:35:39,716 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:35:39,716 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:35:39,716 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:35:39,716 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:35:39,717 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:35:39,717 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:35:39,717 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:35:39,717 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:35:39,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:35:39,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:35:39,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:35:39,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:35:39,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:35:39,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:35:39,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:35:39,720 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:35:39,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:35:39,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:35:39,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:35:39,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:39,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:35:39,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:35:39,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:35:39,722 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:35:39,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:35:39,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:35:39,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:35:39,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:35:39,723 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_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74909622391d8d6688f7cf92b1187b85ab387a71d6e4222379ac00e3d2b34d56 [2021-11-20 23:35:40,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:35:40,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:35:40,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:35:40,064 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:35:40,064 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:35:40,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-20 23:35:40,156 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/data/ae24b9371/00cb8e0ea52141d7b565d5bb74137a1a/FLAG63599bff7 [2021-11-20 23:35:41,371 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:35:41,373 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-20 23:35:41,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/data/ae24b9371/00cb8e0ea52141d7b565d5bb74137a1a/FLAG63599bff7 [2021-11-20 23:35:41,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/data/ae24b9371/00cb8e0ea52141d7b565d5bb74137a1a [2021-11-20 23:35:41,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:35:41,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:35:41,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:41,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:35:41,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:35:41,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:41" (1/1) ... [2021-11-20 23:35:41,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4b6535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:41, skipping insertion in model container [2021-11-20 23:35:41,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:41" (1/1) ... [2021-11-20 23:35:41,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:35:41,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:50,586 WARN L230 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_1908585a-4f9d-425d-a5da-4179752947b0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[901789,901802] [2021-11-20 23:35:50,590 WARN L230 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_1908585a-4f9d-425d-a5da-4179752947b0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[901936,901949] [2021-11-20 23:35:50,590 WARN L230 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_1908585a-4f9d-425d-a5da-4179752947b0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[902075,902088] [2021-11-20 23:35:50,591 WARN L230 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_1908585a-4f9d-425d-a5da-4179752947b0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[902233,902246] [2021-11-20 23:35:50,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:50,809 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:35:51,918 WARN L230 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_1908585a-4f9d-425d-a5da-4179752947b0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[901789,901802] [2021-11-20 23:35:51,919 WARN L230 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_1908585a-4f9d-425d-a5da-4179752947b0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[901936,901949] [2021-11-20 23:35:51,919 WARN L230 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_1908585a-4f9d-425d-a5da-4179752947b0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[902075,902088] [2021-11-20 23:35:51,920 WARN L230 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_1908585a-4f9d-425d-a5da-4179752947b0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[902233,902246] [2021-11-20 23:35:51,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:52,428 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:35:52,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:52 WrapperNode [2021-11-20 23:35:52,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:52,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:52,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:35:52,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:35:52,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:52" (1/1) ... [2021-11-20 23:35:52,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:52" (1/1) ... [2021-11-20 23:35:53,716 INFO L137 Inliner]: procedures = 726, calls = 16218, calls flagged for inlining = 402, calls inlined = 353, statements flattened = 28836 [2021-11-20 23:35:53,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:53,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:35:53,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:35:53,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:35:53,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:52" (1/1) ... [2021-11-20 23:35:53,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:52" (1/1) ... [2021-11-20 23:35:54,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:52" (1/1) ... [2021-11-20 23:35:54,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:52" (1/1) ... [2021-11-20 23:35:54,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:52" (1/1) ... [2021-11-20 23:35:54,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:52" (1/1) ... [2021-11-20 23:35:54,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:52" (1/1) ... [2021-11-20 23:35:55,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:35:55,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:35:55,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:35:55,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:35:55,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:52" (1/1) ... [2021-11-20 23:35:55,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:55,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:55,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:35:55,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:35:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-20 23:35:55,292 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-20 23:35:55,293 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2021-11-20 23:35:55,293 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2021-11-20 23:35:55,293 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-20 23:35:55,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-20 23:35:55,293 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2021-11-20 23:35:55,294 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2021-11-20 23:35:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2021-11-20 23:35:55,306 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2021-11-20 23:35:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-20 23:35:55,307 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-20 23:35:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-20 23:35:55,307 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-20 23:35:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:35:55,308 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:35:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2021-11-20 23:35:55,308 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2021-11-20 23:35:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-20 23:35:55,308 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-20 23:35:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-20 23:35:55,309 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-20 23:35:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-20 23:35:55,309 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-20 23:35:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2021-11-20 23:35:55,310 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2021-11-20 23:35:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:35:55,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:35:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2021-11-20 23:35:55,310 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2021-11-20 23:35:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2021-11-20 23:35:55,311 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2021-11-20 23:35:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2021-11-20 23:35:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2021-11-20 23:35:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-20 23:35:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-20 23:35:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-20 23:35:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-20 23:35:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-20 23:35:55,313 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-20 23:35:55,313 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2021-11-20 23:35:55,313 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2021-11-20 23:35:55,313 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-20 23:35:55,314 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-20 23:35:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2021-11-20 23:35:55,315 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2021-11-20 23:35:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 23:35:55,316 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 23:35:55,316 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-20 23:35:55,316 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-20 23:35:55,316 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2021-11-20 23:35:55,317 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2021-11-20 23:35:55,317 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2021-11-20 23:35:55,317 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2021-11-20 23:35:55,318 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-20 23:35:55,318 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-20 23:35:55,318 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2021-11-20 23:35:55,318 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2021-11-20 23:35:55,318 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2021-11-20 23:35:55,318 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2021-11-20 23:35:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 23:35:55,319 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 23:35:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2021-11-20 23:35:55,319 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2021-11-20 23:35:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-20 23:35:55,320 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-20 23:35:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2021-11-20 23:35:55,321 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2021-11-20 23:35:55,321 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-20 23:35:55,321 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-20 23:35:55,321 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 23:35:55,321 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 23:35:55,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:35:55,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:35:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:35:55,322 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:35:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-20 23:35:55,323 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-20 23:35:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 23:35:55,323 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 23:35:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:35:55,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:35:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 23:35:55,325 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 23:35:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-20 23:35:55,325 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-20 23:35:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:35:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-20 23:35:55,327 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-20 23:35:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2021-11-20 23:35:55,336 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2021-11-20 23:35:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2021-11-20 23:35:55,336 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2021-11-20 23:35:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2021-11-20 23:35:55,337 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2021-11-20 23:35:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-20 23:35:55,337 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-20 23:35:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-20 23:35:55,337 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-20 23:35:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2021-11-20 23:35:55,337 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2021-11-20 23:35:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 23:35:55,338 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 23:35:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2021-11-20 23:35:55,338 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2021-11-20 23:35:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2021-11-20 23:35:55,338 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2021-11-20 23:35:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2021-11-20 23:35:55,338 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2021-11-20 23:35:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:35:55,339 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:35:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 23:35:55,339 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 23:35:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2021-11-20 23:35:55,339 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2021-11-20 23:35:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2021-11-20 23:35:55,340 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2021-11-20 23:35:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:35:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-20 23:35:55,340 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-20 23:35:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2021-11-20 23:35:55,340 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2021-11-20 23:35:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2021-11-20 23:35:55,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2021-11-20 23:35:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2021-11-20 23:35:55,341 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2021-11-20 23:35:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:35:55,341 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:35:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2021-11-20 23:35:55,341 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2021-11-20 23:35:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:35:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:35:55,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:35:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2021-11-20 23:35:55,342 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2021-11-20 23:35:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:35:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 23:35:55,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 23:35:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2021-11-20 23:35:55,342 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2021-11-20 23:35:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-20 23:35:55,343 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-20 23:35:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2021-11-20 23:35:55,343 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2021-11-20 23:35:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:35:55,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:35:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2021-11-20 23:35:55,343 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2021-11-20 23:35:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2021-11-20 23:35:55,344 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2021-11-20 23:35:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-20 23:35:55,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-20 23:35:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2021-11-20 23:35:55,344 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2021-11-20 23:35:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-20 23:35:55,345 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-20 23:35:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:35:55,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:35:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-20 23:35:55,345 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-20 23:35:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:35:55,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:35:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2021-11-20 23:35:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2021-11-20 23:35:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2021-11-20 23:35:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2021-11-20 23:35:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-20 23:35:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-20 23:35:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 23:35:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 23:35:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-20 23:35:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-20 23:35:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2021-11-20 23:35:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2021-11-20 23:35:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-20 23:35:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-20 23:35:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2021-11-20 23:35:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2021-11-20 23:35:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2021-11-20 23:35:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2021-11-20 23:35:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:35:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:35:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:35:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:35:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:35:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2021-11-20 23:35:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2021-11-20 23:35:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-20 23:35:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-20 23:35:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:35:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-20 23:35:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-20 23:35:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:35:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:35:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 23:35:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 23:35:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:35:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2021-11-20 23:35:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2021-11-20 23:35:55,366 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 23:35:55,366 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-20 23:35:55,366 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-20 23:35:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:35:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:35:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2021-11-20 23:35:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2021-11-20 23:35:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-20 23:35:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-20 23:35:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2021-11-20 23:35:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2021-11-20 23:35:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2021-11-20 23:35:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2021-11-20 23:35:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-20 23:35:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-20 23:35:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2021-11-20 23:35:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2021-11-20 23:35:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2021-11-20 23:35:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2021-11-20 23:35:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2021-11-20 23:35:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2021-11-20 23:35:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-20 23:35:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-20 23:35:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-20 23:35:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-20 23:35:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:35:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:35:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2021-11-20 23:35:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2021-11-20 23:35:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-20 23:35:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-20 23:35:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2021-11-20 23:35:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2021-11-20 23:35:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2021-11-20 23:35:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2021-11-20 23:35:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-20 23:35:55,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-20 23:35:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2021-11-20 23:35:55,371 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2021-11-20 23:35:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2021-11-20 23:35:55,371 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2021-11-20 23:35:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-11-20 23:35:55,371 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-11-20 23:35:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-20 23:35:55,372 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-20 23:35:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2021-11-20 23:35:55,372 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2021-11-20 23:35:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-20 23:35:55,372 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-20 23:35:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2021-11-20 23:35:55,372 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2021-11-20 23:35:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-20 23:35:55,373 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-20 23:35:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 23:35:55,373 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 23:35:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2021-11-20 23:35:55,373 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2021-11-20 23:35:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2021-11-20 23:35:55,373 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2021-11-20 23:35:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2021-11-20 23:35:55,373 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2021-11-20 23:35:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-20 23:35:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-20 23:35:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:35:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:35:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2021-11-20 23:35:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2021-11-20 23:35:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-20 23:35:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-20 23:35:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2021-11-20 23:35:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2021-11-20 23:35:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2021-11-20 23:35:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2021-11-20 23:35:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2021-11-20 23:35:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2021-11-20 23:35:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 23:35:55,386 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 23:35:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2021-11-20 23:35:55,387 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2021-11-20 23:35:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:35:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:35:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:35:55,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:35:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-20 23:35:55,387 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-20 23:35:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-20 23:35:55,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-20 23:35:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-20 23:35:55,388 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-20 23:35:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2021-11-20 23:35:55,388 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2021-11-20 23:35:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-20 23:35:55,388 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-20 23:35:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-20 23:35:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-20 23:35:55,389 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-20 23:35:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-20 23:35:55,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-20 23:35:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_resume [2021-11-20 23:35:55,389 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_resume [2021-11-20 23:35:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-20 23:35:55,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-20 23:35:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-20 23:35:55,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-20 23:35:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2021-11-20 23:35:55,390 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2021-11-20 23:35:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 23:35:55,390 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 23:35:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:35:55,390 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:35:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-20 23:35:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-20 23:35:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2021-11-20 23:35:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2021-11-20 23:35:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2021-11-20 23:35:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2021-11-20 23:35:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2021-11-20 23:35:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2021-11-20 23:35:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:35:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:35:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-20 23:35:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-20 23:35:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2021-11-20 23:35:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2021-11-20 23:35:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-20 23:35:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-20 23:35:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-20 23:35:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-20 23:35:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2021-11-20 23:35:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2021-11-20 23:35:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2021-11-20 23:35:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2021-11-20 23:35:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-20 23:35:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-20 23:35:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-20 23:35:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-20 23:35:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-20 23:35:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-20 23:35:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-20 23:35:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-20 23:35:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:35:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:35:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:35:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-20 23:35:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-20 23:35:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 23:35:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 23:35:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2021-11-20 23:35:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2021-11-20 23:35:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:35:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-20 23:35:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-20 23:35:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-20 23:35:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-20 23:35:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-20 23:35:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-20 23:35:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2021-11-20 23:35:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2021-11-20 23:35:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2021-11-20 23:35:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2021-11-20 23:35:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2021-11-20 23:35:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2021-11-20 23:35:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:35:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2021-11-20 23:35:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2021-11-20 23:35:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2021-11-20 23:35:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2021-11-20 23:35:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2021-11-20 23:35:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2021-11-20 23:35:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-20 23:35:55,401 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-20 23:35:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2021-11-20 23:35:55,402 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2021-11-20 23:35:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-20 23:35:55,402 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-20 23:35:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2021-11-20 23:35:55,402 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2021-11-20 23:35:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:35:55,402 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:35:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-20 23:35:55,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-20 23:35:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:35:55,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:35:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-20 23:35:55,403 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-20 23:35:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2021-11-20 23:35:55,403 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2021-11-20 23:35:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-20 23:35:55,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-20 23:35:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2021-11-20 23:35:55,404 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2021-11-20 23:35:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2021-11-20 23:35:55,404 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2021-11-20 23:35:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2021-11-20 23:35:55,404 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2021-11-20 23:35:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2021-11-20 23:35:55,404 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2021-11-20 23:35:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-11-20 23:35:55,404 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-11-20 23:35:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2021-11-20 23:35:55,405 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2021-11-20 23:35:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2021-11-20 23:35:55,405 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2021-11-20 23:35:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2021-11-20 23:35:55,405 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2021-11-20 23:35:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-20 23:35:55,405 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-20 23:35:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-20 23:35:55,406 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-20 23:35:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 23:35:55,406 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 23:35:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2021-11-20 23:35:55,406 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2021-11-20 23:35:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-20 23:35:55,406 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-20 23:35:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2021-11-20 23:35:55,406 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2021-11-20 23:35:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2021-11-20 23:35:55,407 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2021-11-20 23:35:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2021-11-20 23:35:55,407 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2021-11-20 23:35:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-20 23:35:55,407 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-20 23:35:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 23:35:55,407 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 23:35:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2021-11-20 23:35:55,408 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2021-11-20 23:35:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-20 23:35:55,408 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-20 23:35:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-20 23:35:55,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-20 23:35:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:35:55,408 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:35:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2021-11-20 23:35:55,408 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2021-11-20 23:35:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2021-11-20 23:35:55,409 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2021-11-20 23:35:55,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_20 [2021-11-20 23:35:55,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_20 [2021-11-20 23:35:55,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:35:55,409 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2021-11-20 23:35:55,409 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2021-11-20 23:35:55,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:35:55,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:35:55,409 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2021-11-20 23:35:55,422 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2021-11-20 23:35:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-20 23:35:55,423 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-20 23:35:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2021-11-20 23:35:55,423 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2021-11-20 23:35:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 23:35:55,423 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 23:35:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2021-11-20 23:35:55,424 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2021-11-20 23:35:55,424 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-20 23:35:55,424 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-20 23:35:55,424 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-20 23:35:55,424 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-20 23:35:55,424 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2021-11-20 23:35:55,424 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2021-11-20 23:35:55,425 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-20 23:35:55,425 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-20 23:35:55,425 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2021-11-20 23:35:55,425 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2021-11-20 23:35:55,425 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2021-11-20 23:35:55,425 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2021-11-20 23:35:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2021-11-20 23:35:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2021-11-20 23:35:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-20 23:35:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-20 23:35:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-20 23:35:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-20 23:35:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2021-11-20 23:35:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2021-11-20 23:35:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2021-11-20 23:35:55,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2021-11-20 23:35:55,431 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2021-11-20 23:35:55,431 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2021-11-20 23:35:55,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:35:55,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:35:55,431 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-20 23:35:55,431 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-20 23:35:55,431 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-20 23:35:55,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-20 23:35:55,432 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-20 23:35:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-20 23:35:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2021-11-20 23:35:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2021-11-20 23:35:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-20 23:35:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-20 23:35:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-20 23:35:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-20 23:35:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2021-11-20 23:35:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2021-11-20 23:35:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-20 23:35:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-20 23:35:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-20 23:35:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-20 23:35:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_e1000_exit_module_13_2 [2021-11-20 23:35:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_e1000_exit_module_13_2 [2021-11-20 23:35:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-20 23:35:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-20 23:35:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-20 23:35:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:35:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-20 23:35:55,451 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-20 23:35:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2021-11-20 23:35:55,451 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2021-11-20 23:35:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:35:55,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:35:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-20 23:35:57,853 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:35:57,858 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:35:59,157 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:37:00,516 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:37:00,908 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:37:10,426 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:37:10,426 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-20 23:37:10,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:10 BoogieIcfgContainer [2021-11-20 23:37:10,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:37:10,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:37:10,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:37:10,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:37:10,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:35:41" (1/3) ... [2021-11-20 23:37:10,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3837bebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:10, skipping insertion in model container [2021-11-20 23:37:10,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:52" (2/3) ... [2021-11-20 23:37:10,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3837bebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:10, skipping insertion in model container [2021-11-20 23:37:10,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:10" (3/3) ... [2021-11-20 23:37:10,454 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-20 23:37:10,461 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:37:10,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 23:37:10,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:37:10,545 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 [2021-11-20 23:37:10,546 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 23:37:10,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 6725 states, 4311 states have (on average 1.3423799582463465) internal successors, (5787), 4404 states have internal predecessors, (5787), 2170 states have call successors, (2170), 245 states have call predecessors, (2170), 244 states have return successors, (2164), 2156 states have call predecessors, (2164), 2164 states have call successors, (2164) [2021-11-20 23:37:10,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-20 23:37:10,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:10,721 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:10,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:10,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:10,727 INFO L85 PathProgramCache]: Analyzing trace with hash 937576385, now seen corresponding path program 1 times [2021-11-20 23:37:10,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:10,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973218730] [2021-11-20 23:37:10,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:10,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2021-11-20 23:37:12,570 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:12,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973218730] [2021-11-20 23:37:12,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973218730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:12,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:12,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:12,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065731815] [2021-11-20 23:37:12,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:12,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:12,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:12,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:12,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:12,639 INFO L87 Difference]: Start difference. First operand has 6725 states, 4311 states have (on average 1.3423799582463465) internal successors, (5787), 4404 states have internal predecessors, (5787), 2170 states have call successors, (2170), 245 states have call predecessors, (2170), 244 states have return successors, (2164), 2156 states have call predecessors, (2164), 2164 states have call successors, (2164) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-20 23:37:15,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:22,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:30,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:33,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:35,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:37,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:39,973 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:42,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:44,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:47,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:47,302 INFO L93 Difference]: Finished difference Result 19578 states and 29527 transitions. [2021-11-20 23:37:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:47,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 250 [2021-11-20 23:37:47,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:47,549 INFO L225 Difference]: With dead ends: 19578 [2021-11-20 23:37:47,549 INFO L226 Difference]: Without dead ends: 12890 [2021-11-20 23:37:47,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:47,660 INFO L933 BasicCegarLoop]: 11249 mSDtfsCounter, 9294 mSDsluCounter, 10050 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 7 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9297 SdHoareTripleChecker+Valid, 20438 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:47,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9297 Valid, 20438 Invalid, 1773 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1758 Invalid, 8 Unknown, 0 Unchecked, 33.6s Time] [2021-11-20 23:37:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12890 states. [2021-11-20 23:37:49,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12890 to 12880. [2021-11-20 23:37:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12880 states, 8219 states have (on average 1.336415622338484) internal successors, (10984), 8399 states have internal predecessors, (10984), 4180 states have call successors, (4180), 480 states have call predecessors, (4180), 479 states have return successors, (4180), 4161 states have call predecessors, (4180), 4177 states have call successors, (4180) [2021-11-20 23:37:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12880 states to 12880 states and 19344 transitions. [2021-11-20 23:37:50,023 INFO L78 Accepts]: Start accepts. Automaton has 12880 states and 19344 transitions. Word has length 250 [2021-11-20 23:37:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:50,029 INFO L470 AbstractCegarLoop]: Abstraction has 12880 states and 19344 transitions. [2021-11-20 23:37:50,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-20 23:37:50,033 INFO L276 IsEmpty]: Start isEmpty. Operand 12880 states and 19344 transitions. [2021-11-20 23:37:50,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-20 23:37:50,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:50,054 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:50,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:37:50,055 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:50,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:50,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1967086330, now seen corresponding path program 1 times [2021-11-20 23:37:50,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:50,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710790068] [2021-11-20 23:37:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:50,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2021-11-20 23:37:51,250 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:51,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710790068] [2021-11-20 23:37:51,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710790068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:51,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:51,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:51,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284003316] [2021-11-20 23:37:51,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:51,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:51,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:51,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:51,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:51,257 INFO L87 Difference]: Start difference. First operand 12880 states and 19344 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-20 23:38:03,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:05,682 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:08,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:11,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:15,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:17,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:19,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:21,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:22,568 INFO L93 Difference]: Finished difference Result 36948 states and 55501 transitions. [2021-11-20 23:38:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:22,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 275 [2021-11-20 23:38:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:22,840 INFO L225 Difference]: With dead ends: 36948 [2021-11-20 23:38:22,840 INFO L226 Difference]: Without dead ends: 24115 [2021-11-20 23:38:23,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:23,088 INFO L933 BasicCegarLoop]: 11433 mSDtfsCounter, 8435 mSDsluCounter, 10012 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 19 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8438 SdHoareTripleChecker+Valid, 20594 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:23,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8438 Valid, 20594 Invalid, 1869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1842 Invalid, 8 Unknown, 0 Unchecked, 30.2s Time] [2021-11-20 23:38:23,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24115 states. [2021-11-20 23:38:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24115 to 24102. [2021-11-20 23:38:25,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24102 states, 15400 states have (on average 1.334090909090909) internal successors, (20545), 15738 states have internal predecessors, (20545), 7816 states have call successors, (7816), 886 states have call predecessors, (7816), 884 states have return successors, (7822), 7772 states have call predecessors, (7822), 7813 states have call successors, (7822) [2021-11-20 23:38:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24102 states to 24102 states and 36183 transitions. [2021-11-20 23:38:25,516 INFO L78 Accepts]: Start accepts. Automaton has 24102 states and 36183 transitions. Word has length 275 [2021-11-20 23:38:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:25,519 INFO L470 AbstractCegarLoop]: Abstraction has 24102 states and 36183 transitions. [2021-11-20 23:38:25,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-20 23:38:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 24102 states and 36183 transitions. [2021-11-20 23:38:25,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-20 23:38:25,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:25,533 INFO L514 BasicCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:25,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:38:25,534 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:25,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:25,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1777474116, now seen corresponding path program 1 times [2021-11-20 23:38:25,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:25,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668663068] [2021-11-20 23:38:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:25,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2247 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2247 trivial. 0 not checked. [2021-11-20 23:38:27,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:27,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668663068] [2021-11-20 23:38:27,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668663068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:27,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:27,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:38:27,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643809575] [2021-11-20 23:38:27,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:27,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:38:27,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:38:27,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:38:27,044 INFO L87 Difference]: Start difference. First operand 24102 states and 36183 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:38:32,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:41,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:45,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:48,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:53,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:57,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:00,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:02,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:04,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:07,646 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:08,226 INFO L93 Difference]: Finished difference Result 39856 states and 59763 transitions. [2021-11-20 23:39:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:39:08,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 292 [2021-11-20 23:39:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:08,554 INFO L225 Difference]: With dead ends: 39856 [2021-11-20 23:39:08,554 INFO L226 Difference]: Without dead ends: 39833 [2021-11-20 23:39:08,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:08,609 INFO L933 BasicCegarLoop]: 11094 mSDtfsCounter, 8386 mSDsluCounter, 21964 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8403 SdHoareTripleChecker+Valid, 31323 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:08,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8403 Valid, 31323 Invalid, 2620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2610 Invalid, 10 Unknown, 0 Unchecked, 40.0s Time] [2021-11-20 23:39:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39833 states. [2021-11-20 23:39:11,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39833 to 39816. [2021-11-20 23:39:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39816 states, 25421 states have (on average 1.3343298847409621) internal successors, (33920), 25983 states have internal predecessors, (33920), 12886 states have call successors, (12886), 1512 states have call predecessors, (12886), 1507 states have return successors, (12898), 12811 states have call predecessors, (12898), 12883 states have call successors, (12898) [2021-11-20 23:39:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39816 states to 39816 states and 59704 transitions. [2021-11-20 23:39:12,763 INFO L78 Accepts]: Start accepts. Automaton has 39816 states and 59704 transitions. Word has length 292 [2021-11-20 23:39:12,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:12,764 INFO L470 AbstractCegarLoop]: Abstraction has 39816 states and 59704 transitions. [2021-11-20 23:39:12,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:39:12,765 INFO L276 IsEmpty]: Start isEmpty. Operand 39816 states and 59704 transitions. [2021-11-20 23:39:12,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-20 23:39:12,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:12,796 INFO L514 BasicCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:12,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:39:12,797 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:12,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:12,798 INFO L85 PathProgramCache]: Analyzing trace with hash 61968331, now seen corresponding path program 1 times [2021-11-20 23:39:12,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:12,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048011258] [2021-11-20 23:39:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:12,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2253 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2250 trivial. 0 not checked. [2021-11-20 23:39:13,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:13,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048011258] [2021-11-20 23:39:13,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048011258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:13,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:13,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:39:13,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821917307] [2021-11-20 23:39:13,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:13,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:13,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:13,889 INFO L87 Difference]: Start difference. First operand 39816 states and 59704 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-20 23:39:17,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:30,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:33,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:36,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:39,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:44,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:46,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:48,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:51,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:51,944 INFO L93 Difference]: Finished difference Result 73516 states and 110243 transitions. [2021-11-20 23:39:51,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:51,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 322 [2021-11-20 23:39:51,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:52,571 INFO L225 Difference]: With dead ends: 73516 [2021-11-20 23:39:52,582 INFO L226 Difference]: Without dead ends: 50541 [2021-11-20 23:39:52,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:52,788 INFO L933 BasicCegarLoop]: 16911 mSDtfsCounter, 8430 mSDsluCounter, 10011 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 15 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8433 SdHoareTripleChecker+Valid, 26070 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:52,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8433 Valid, 26070 Invalid, 2513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 2490 Invalid, 8 Unknown, 0 Unchecked, 36.4s Time] [2021-11-20 23:39:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50541 states. [2021-11-20 23:39:55,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50541 to 50530. [2021-11-20 23:39:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50530 states, 32269 states have (on average 1.333973782887601) internal successors, (43046), 32982 states have internal predecessors, (43046), 16347 states have call successors, (16347), 1919 states have call predecessors, (16347), 1912 states have return successors, (16364), 16247 states have call predecessors, (16364), 16344 states have call successors, (16364) [2021-11-20 23:39:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50530 states to 50530 states and 75757 transitions. [2021-11-20 23:39:56,649 INFO L78 Accepts]: Start accepts. Automaton has 50530 states and 75757 transitions. Word has length 322 [2021-11-20 23:39:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:56,653 INFO L470 AbstractCegarLoop]: Abstraction has 50530 states and 75757 transitions. [2021-11-20 23:39:56,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-20 23:39:56,654 INFO L276 IsEmpty]: Start isEmpty. Operand 50530 states and 75757 transitions. [2021-11-20 23:39:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-11-20 23:39:56,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:56,744 INFO L514 BasicCegarLoop]: trace histogram [29, 23, 23, 23, 23, 23, 23, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:56,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:39:56,745 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:56,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:56,745 INFO L85 PathProgramCache]: Analyzing trace with hash -474991732, now seen corresponding path program 1 times [2021-11-20 23:39:56,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:56,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800676395] [2021-11-20 23:39:56,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:56,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2473 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2473 trivial. 0 not checked. [2021-11-20 23:39:58,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:58,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800676395] [2021-11-20 23:39:58,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800676395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:58,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:58,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:39:58,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081646045] [2021-11-20 23:39:58,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:58,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:39:58,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:58,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:39:58,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:39:58,325 INFO L87 Difference]: Start difference. First operand 50530 states and 75757 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-20 23:40:02,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:13,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:16,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:18,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:23,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:32,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:37,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:39,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:41,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:45,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:48,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:49,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:49,639 INFO L93 Difference]: Finished difference Result 96071 states and 145677 transitions. [2021-11-20 23:40:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:40:49,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 384 [2021-11-20 23:40:49,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:50,286 INFO L225 Difference]: With dead ends: 96071 [2021-11-20 23:40:50,286 INFO L226 Difference]: Without dead ends: 96069 [2021-11-20 23:40:50,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:40:50,369 INFO L933 BasicCegarLoop]: 13172 mSDtfsCounter, 12133 mSDsluCounter, 23802 mSDsCounter, 0 mSdLazyCounter, 3473 mSolverCounterSat, 492 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12625 SdHoareTripleChecker+Valid, 35135 SdHoareTripleChecker+Invalid, 3975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 3473 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:50,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12625 Valid, 35135 Invalid, 3975 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [492 Valid, 3473 Invalid, 10 Unknown, 0 Unchecked, 48.4s Time] [2021-11-20 23:40:50,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96069 states. [2021-11-20 23:40:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96069 to 79650. [2021-11-20 23:40:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79650 states, 50831 states have (on average 1.3332611988747025) internal successors, (67771), 51963 states have internal predecessors, (67771), 25822 states have call successors, (25822), 3004 states have call predecessors, (25822), 2995 states have return successors, (25854), 25662 states have call predecessors, (25854), 25819 states have call successors, (25854) [2021-11-20 23:40:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79650 states to 79650 states and 119447 transitions. [2021-11-20 23:40:58,155 INFO L78 Accepts]: Start accepts. Automaton has 79650 states and 119447 transitions. Word has length 384 [2021-11-20 23:40:58,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:58,158 INFO L470 AbstractCegarLoop]: Abstraction has 79650 states and 119447 transitions. [2021-11-20 23:40:58,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-20 23:40:58,159 INFO L276 IsEmpty]: Start isEmpty. Operand 79650 states and 119447 transitions. [2021-11-20 23:40:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-11-20 23:40:58,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:58,714 INFO L514 BasicCegarLoop]: trace histogram [28, 23, 23, 23, 23, 23, 23, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:58,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:40:58,715 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:40:58,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:58,716 INFO L85 PathProgramCache]: Analyzing trace with hash 182105562, now seen corresponding path program 1 times [2021-11-20 23:40:58,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:58,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169709437] [2021-11-20 23:40:58,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:58,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2361 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2021-11-20 23:40:59,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:59,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169709437] [2021-11-20 23:40:59,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169709437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:59,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:59,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:40:59,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417272975] [2021-11-20 23:40:59,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:59,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:40:59,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:59,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:40:59,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:40:59,639 INFO L87 Difference]: Start difference. First operand 79650 states and 119447 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-20 23:41:03,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:41:17,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:41:19,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:41:21,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:41:24,038 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:41:27,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:41:29,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:29,880 INFO L93 Difference]: Finished difference Result 107236 states and 160563 transitions. [2021-11-20 23:41:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:41:29,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 455 [2021-11-20 23:41:29,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:30,349 INFO L225 Difference]: With dead ends: 107236 [2021-11-20 23:41:30,349 INFO L226 Difference]: Without dead ends: 27633 [2021-11-20 23:41:30,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:41:30,774 INFO L933 BasicCegarLoop]: 12659 mSDtfsCounter, 6414 mSDsluCounter, 9911 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6416 SdHoareTripleChecker+Valid, 21766 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:30,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6416 Valid, 21766 Invalid, 1927 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1914 Invalid, 6 Unknown, 0 Unchecked, 27.8s Time] [2021-11-20 23:41:30,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27633 states. [2021-11-20 23:41:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27633 to 27617. [2021-11-20 23:41:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27617 states, 17612 states have (on average 1.326141267317738) internal successors, (23356), 17991 states have internal predecessors, (23356), 8885 states have call successors, (8885), 1124 states have call predecessors, (8885), 1118 states have return successors, (8892), 8824 states have call predecessors, (8892), 8882 states have call successors, (8892) [2021-11-20 23:41:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27617 states to 27617 states and 41133 transitions. [2021-11-20 23:41:32,847 INFO L78 Accepts]: Start accepts. Automaton has 27617 states and 41133 transitions. Word has length 455 [2021-11-20 23:41:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:32,848 INFO L470 AbstractCegarLoop]: Abstraction has 27617 states and 41133 transitions. [2021-11-20 23:41:32,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-20 23:41:32,848 INFO L276 IsEmpty]: Start isEmpty. Operand 27617 states and 41133 transitions. [2021-11-20 23:41:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2021-11-20 23:41:32,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:32,867 INFO L514 BasicCegarLoop]: trace histogram [32, 25, 25, 25, 25, 25, 25, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:41:32,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:41:32,868 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:41:32,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:32,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1600770536, now seen corresponding path program 1 times [2021-11-20 23:41:32,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:41:32,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734979230] [2021-11-20 23:41:32,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:32,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:41:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2998 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2998 trivial. 0 not checked. [2021-11-20 23:41:34,127 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:41:34,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734979230] [2021-11-20 23:41:34,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734979230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:41:34,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:41:34,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:41:34,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113144421] [2021-11-20 23:41:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:34,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:41:34,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:41:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:41:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:41:34,131 INFO L87 Difference]: Start difference. First operand 27617 states and 41133 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-20 23:41:38,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:41:51,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:41:56,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:41:58,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:00,826 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:04,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:07,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:14,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:19,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:21,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:22,439 INFO L93 Difference]: Finished difference Result 58758 states and 88582 transitions. [2021-11-20 23:42:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:42:22,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 489 [2021-11-20 23:42:22,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:22,762 INFO L225 Difference]: With dead ends: 58758 [2021-11-20 23:42:22,762 INFO L226 Difference]: Without dead ends: 58756 [2021-11-20 23:42:22,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:22,803 INFO L933 BasicCegarLoop]: 12647 mSDtfsCounter, 12936 mSDsluCounter, 23598 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 689 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13428 SdHoareTripleChecker+Valid, 34393 SdHoareTripleChecker+Invalid, 4089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 3391 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:22,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13428 Valid, 34393 Invalid, 4089 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [689 Valid, 3391 Invalid, 9 Unknown, 0 Unchecked, 46.5s Time] [2021-11-20 23:42:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58756 states. [2021-11-20 23:42:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58756 to 49797. [2021-11-20 23:42:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49797 states, 31768 states have (on average 1.3283807605137246) internal successors, (42200), 32465 states have internal predecessors, (42200), 16051 states have call successors, (16051), 1987 states have call predecessors, (16051), 1976 states have return successors, (16069), 15931 states have call predecessors, (16069), 16048 states have call successors, (16069) [2021-11-20 23:42:27,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49797 states to 49797 states and 74320 transitions. [2021-11-20 23:42:27,007 INFO L78 Accepts]: Start accepts. Automaton has 49797 states and 74320 transitions. Word has length 489 [2021-11-20 23:42:27,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:27,009 INFO L470 AbstractCegarLoop]: Abstraction has 49797 states and 74320 transitions. [2021-11-20 23:42:27,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-20 23:42:27,009 INFO L276 IsEmpty]: Start isEmpty. Operand 49797 states and 74320 transitions. [2021-11-20 23:42:27,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2021-11-20 23:42:27,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:27,034 INFO L514 BasicCegarLoop]: trace histogram [34, 25, 25, 25, 25, 25, 25, 13, 13, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:27,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:42:27,034 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:42:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:27,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1675096269, now seen corresponding path program 1 times [2021-11-20 23:42:27,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:27,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927475313] [2021-11-20 23:42:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:27,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3217 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3217 trivial. 0 not checked. [2021-11-20 23:42:28,715 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:28,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927475313] [2021-11-20 23:42:28,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927475313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:28,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:28,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:42:28,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925168964] [2021-11-20 23:42:28,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:28,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:42:28,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:28,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:42:28,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:42:28,719 INFO L87 Difference]: Start difference. First operand 49797 states and 74320 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-20 23:42:32,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:43,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:45,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:47,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:48,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:50,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:52,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:55,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:42:58,733 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:43:05,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:43:09,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:43:12,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:43:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:12,899 INFO L93 Difference]: Finished difference Result 72087 states and 107659 transitions. [2021-11-20 23:43:12,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:43:12,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 521 [2021-11-20 23:43:12,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:13,345 INFO L225 Difference]: With dead ends: 72087 [2021-11-20 23:43:13,346 INFO L226 Difference]: Without dead ends: 71988 [2021-11-20 23:43:13,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:43:13,409 INFO L933 BasicCegarLoop]: 11300 mSDtfsCounter, 9619 mSDsluCounter, 22175 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9622 SdHoareTripleChecker+Valid, 31735 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:13,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9622 Valid, 31735 Invalid, 2622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2612 Invalid, 10 Unknown, 0 Unchecked, 42.2s Time] [2021-11-20 23:43:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71988 states. [2021-11-20 23:43:17,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71988 to 71949. [2021-11-20 23:43:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71949 states, 45949 states have (on average 1.3285381618751224) internal successors, (61045), 46927 states have internal predecessors, (61045), 23167 states have call successors, (23167), 2839 states have call predecessors, (23167), 2831 states have return successors, (23196), 23033 states have call predecessors, (23196), 23164 states have call successors, (23196) [2021-11-20 23:43:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71949 states to 71949 states and 107408 transitions. [2021-11-20 23:43:18,779 INFO L78 Accepts]: Start accepts. Automaton has 71949 states and 107408 transitions. Word has length 521 [2021-11-20 23:43:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:18,781 INFO L470 AbstractCegarLoop]: Abstraction has 71949 states and 107408 transitions. [2021-11-20 23:43:18,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-20 23:43:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand 71949 states and 107408 transitions. [2021-11-20 23:43:19,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2021-11-20 23:43:19,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:19,024 INFO L514 BasicCegarLoop]: trace histogram [32, 25, 25, 25, 25, 25, 25, 14, 11, 11, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:19,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:43:19,024 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:19,025 INFO L85 PathProgramCache]: Analyzing trace with hash 409552159, now seen corresponding path program 1 times [2021-11-20 23:43:19,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:19,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785781980] [2021-11-20 23:43:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:19,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:19,521 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:43:19,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313685875] [2021-11-20 23:43:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:19,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:19,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:19,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:19,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:43:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:24,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 19049 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:43:24,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3288 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 3184 trivial. 0 not checked. [2021-11-20 23:43:26,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:43:26,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:26,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785781980] [2021-11-20 23:43:26,480 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:43:26,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313685875] [2021-11-20 23:43:26,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313685875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:26,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:26,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:43:26,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408141993] [2021-11-20 23:43:26,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:26,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:43:26,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:26,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:43:26,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:43:26,485 INFO L87 Difference]: Start difference. First operand 71949 states and 107408 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 3 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (121), 3 states have call predecessors, (121), 3 states have call successors, (121) [2021-11-20 23:43:30,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:43:40,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:43:42,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:43:44,443 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:43:46,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:43:48,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:43:50,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:43:54,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:43:58,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:00,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:02,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:04,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:04,257 INFO L93 Difference]: Finished difference Result 98589 states and 147666 transitions. [2021-11-20 23:44:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:44:04,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 3 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (121), 3 states have call predecessors, (121), 3 states have call successors, (121) Word has length 847 [2021-11-20 23:44:04,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:04,651 INFO L225 Difference]: With dead ends: 98589 [2021-11-20 23:44:04,651 INFO L226 Difference]: Without dead ends: 76113 [2021-11-20 23:44:04,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:44:04,785 INFO L933 BasicCegarLoop]: 11113 mSDtfsCounter, 1187 mSDsluCounter, 10554 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 20804 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:04,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1682 Valid, 20804 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2006 Invalid, 8 Unknown, 0 Unchecked, 35.6s Time] [2021-11-20 23:44:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76113 states. [2021-11-20 23:44:09,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76113 to 71954. [2021-11-20 23:44:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71954 states, 45953 states have (on average 1.3285313254847344) internal successors, (61050), 46931 states have internal predecessors, (61050), 23168 states have call successors, (23168), 2839 states have call predecessors, (23168), 2831 states have return successors, (23197), 23034 states have call predecessors, (23197), 23165 states have call successors, (23197) [2021-11-20 23:44:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71954 states to 71954 states and 107415 transitions. [2021-11-20 23:44:10,720 INFO L78 Accepts]: Start accepts. Automaton has 71954 states and 107415 transitions. Word has length 847 [2021-11-20 23:44:10,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:10,723 INFO L470 AbstractCegarLoop]: Abstraction has 71954 states and 107415 transitions. [2021-11-20 23:44:10,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 3 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (121), 3 states have call predecessors, (121), 3 states have call successors, (121) [2021-11-20 23:44:10,724 INFO L276 IsEmpty]: Start isEmpty. Operand 71954 states and 107415 transitions. [2021-11-20 23:44:10,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2021-11-20 23:44:10,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:10,997 INFO L514 BasicCegarLoop]: trace histogram [32, 25, 25, 25, 25, 25, 25, 17, 11, 11, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:11,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:11,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-20 23:44:11,223 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:11,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:11,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1300522072, now seen corresponding path program 1 times [2021-11-20 23:44:11,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:11,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114750091] [2021-11-20 23:44:11,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:11,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:11,731 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:44:11,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602524034] [2021-11-20 23:44:11,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:11,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:11,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:44:11,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:44:11,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:44:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:16,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 19333 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:44:16,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3400 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3368 trivial. 0 not checked. [2021-11-20 23:44:19,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:44:19,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:19,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114750091] [2021-11-20 23:44:19,369 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:44:19,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602524034] [2021-11-20 23:44:19,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602524034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:19,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:19,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:44:19,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666933936] [2021-11-20 23:44:19,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:19,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:44:19,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:19,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:44:19,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:44:19,373 INFO L87 Difference]: Start difference. First operand 71954 states and 107415 transitions. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2021-11-20 23:44:22,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:24,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:39,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:42,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:44,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:46,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:48,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:50,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:53,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:57,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:44:59,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:04,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:07,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:09,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:45:09,792 INFO L93 Difference]: Finished difference Result 176479 states and 267213 transitions. [2021-11-20 23:45:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:45:09,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 891 [2021-11-20 23:45:09,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:45:10,445 INFO L225 Difference]: With dead ends: 176479 [2021-11-20 23:45:10,445 INFO L226 Difference]: Without dead ends: 109666 [2021-11-20 23:45:10,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 889 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:45:10,767 INFO L933 BasicCegarLoop]: 11332 mSDtfsCounter, 4684 mSDsluCounter, 22645 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5699 SdHoareTripleChecker+Valid, 31973 SdHoareTripleChecker+Invalid, 4012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:45:10,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5699 Valid, 31973 Invalid, 4012 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 8 Unknown, 0 Unchecked, 45.6s Time] [2021-11-20 23:45:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109666 states. [2021-11-20 23:45:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109666 to 71960. [2021-11-20 23:45:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71960 states, 45959 states have (on average 1.3284884353445463) internal successors, (61056), 46937 states have internal predecessors, (61056), 23168 states have call successors, (23168), 2839 states have call predecessors, (23168), 2831 states have return successors, (23197), 23034 states have call predecessors, (23197), 23165 states have call successors, (23197) [2021-11-20 23:45:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71960 states to 71960 states and 107421 transitions. [2021-11-20 23:45:19,117 INFO L78 Accepts]: Start accepts. Automaton has 71960 states and 107421 transitions. Word has length 891 [2021-11-20 23:45:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:45:19,118 INFO L470 AbstractCegarLoop]: Abstraction has 71960 states and 107421 transitions. [2021-11-20 23:45:19,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2021-11-20 23:45:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 71960 states and 107421 transitions. [2021-11-20 23:45:19,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2021-11-20 23:45:19,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:45:19,306 INFO L514 BasicCegarLoop]: trace histogram [32, 25, 25, 25, 25, 25, 25, 18, 11, 11, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:45:19,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:45:19,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:45:19,523 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:45:19,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:45:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1453879605, now seen corresponding path program 1 times [2021-11-20 23:45:19,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:45:19,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281420933] [2021-11-20 23:45:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:45:19,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:45:19,998 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:45:20,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154895529] [2021-11-20 23:45:20,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:45:20,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:45:20,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:45:20,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:45:20,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908585a-4f9d-425d-a5da-4179752947b0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:45:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:45:24,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 19431 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:45:24,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:45:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 3400 trivial. 0 not checked. [2021-11-20 23:45:27,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:45:27,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:45:27,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281420933] [2021-11-20 23:45:27,039 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:45:27,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154895529] [2021-11-20 23:45:27,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154895529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:45:27,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:45:27,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:45:27,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121739659] [2021-11-20 23:45:27,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:45:27,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:45:27,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:45:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:45:27,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:45:27,044 INFO L87 Difference]: Start difference. First operand 71960 states and 107421 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 2 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2021-11-20 23:45:31,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:33,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:47,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:51,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:53,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:55,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:59,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:46:01,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:46:07,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:46:09,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:46:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:11,654 INFO L93 Difference]: Finished difference Result 151598 states and 227726 transitions. [2021-11-20 23:46:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:46:11,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 2 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) Word has length 909 [2021-11-20 23:46:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:12,359 INFO L225 Difference]: With dead ends: 151598 [2021-11-20 23:46:12,359 INFO L226 Difference]: Without dead ends: 84779 [2021-11-20 23:46:12,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 907 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:46:12,657 INFO L933 BasicCegarLoop]: 10018 mSDtfsCounter, 2587 mSDsluCounter, 20327 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 1027 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 28611 SdHoareTripleChecker+Invalid, 3691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1027 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:12,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2587 Valid, 28611 Invalid, 3691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1027 Valid, 2655 Invalid, 9 Unknown, 0 Unchecked, 40.5s Time] [2021-11-20 23:46:12,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84779 states.