./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.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_8437c709-aaec-4976-bf82-18848ad84a28/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/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_8437c709-aaec-4976-bf82-18848ad84a28/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/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_8437c709-aaec-4976-bf82-18848ad84a28/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 760ec64c2425d439883c5d1074b52af06ed0343ac750305f469404408ecd0aa4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:47:35,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:47:35,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:47:35,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:47:35,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:47:35,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:47:35,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:47:35,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:47:35,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:47:35,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:47:35,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:47:35,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:47:35,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:47:35,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:47:35,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:47:35,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:47:35,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:47:35,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:47:35,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:47:35,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:47:35,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:47:35,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:47:35,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:47:35,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:47:35,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:47:35,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:47:35,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:47:35,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:47:35,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:47:35,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:47:35,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:47:35,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:47:35,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:47:35,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:47:35,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:47:35,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:47:35,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:47:35,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:47:35,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:47:35,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:47:35,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:47:35,898 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:47:35,941 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:47:35,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:47:35,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:47:35,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:47:35,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:47:35,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:47:35,950 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:47:35,950 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:47:35,950 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:47:35,951 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:47:35,952 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:47:35,952 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:47:35,952 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:47:35,952 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:47:35,953 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:47:35,953 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:47:35,953 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:47:35,953 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:47:35,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:47:35,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:47:35,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:47:35,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:47:35,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:47:35,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:47:35,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:47:35,956 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:47:35,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:47:35,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:47:35,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:47:35,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:47:35,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:47:35,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:47:35,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:47:35,959 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:47:35,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:47:35,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:47:35,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:47:35,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:47:35,960 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_8437c709-aaec-4976-bf82-18848ad84a28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 760ec64c2425d439883c5d1074b52af06ed0343ac750305f469404408ecd0aa4 [2021-11-21 00:47:36,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:47:36,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:47:36,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:47:36,231 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:47:36,232 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:47:36,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2021-11-21 00:47:36,288 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/bin/utaipan-TEXQjIfE4P/data/590a9479c/4a75efc939944e6dbd439f45dfc03b38/FLAGdab01e0a4 [2021-11-21 00:47:37,312 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:47:37,318 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2021-11-21 00:47:37,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/bin/utaipan-TEXQjIfE4P/data/590a9479c/4a75efc939944e6dbd439f45dfc03b38/FLAGdab01e0a4 [2021-11-21 00:47:37,636 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/bin/utaipan-TEXQjIfE4P/data/590a9479c/4a75efc939944e6dbd439f45dfc03b38 [2021-11-21 00:47:37,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:47:37,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:47:37,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:47:37,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:47:37,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:47:37,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:47:37" (1/1) ... [2021-11-21 00:47:37,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0019f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:37, skipping insertion in model container [2021-11-21 00:47:37,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:47:37" (1/1) ... [2021-11-21 00:47:37,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:47:37,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:47:41,109 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_8437c709-aaec-4976-bf82-18848ad84a28/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464274,464287] [2021-11-21 00:47:41,112 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_8437c709-aaec-4976-bf82-18848ad84a28/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464421,464434] [2021-11-21 00:47:41,112 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_8437c709-aaec-4976-bf82-18848ad84a28/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464560,464573] [2021-11-21 00:47:41,113 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_8437c709-aaec-4976-bf82-18848ad84a28/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464718,464731] [2021-11-21 00:47:41,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:47:41,190 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:47:41,751 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_8437c709-aaec-4976-bf82-18848ad84a28/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464274,464287] [2021-11-21 00:47:41,752 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_8437c709-aaec-4976-bf82-18848ad84a28/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464421,464434] [2021-11-21 00:47:41,752 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_8437c709-aaec-4976-bf82-18848ad84a28/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464560,464573] [2021-11-21 00:47:41,752 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_8437c709-aaec-4976-bf82-18848ad84a28/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464718,464731] [2021-11-21 00:47:41,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:47:42,044 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:47:42,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:42 WrapperNode [2021-11-21 00:47:42,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:47:42,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:47:42,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:47:42,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:47:42,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:42" (1/1) ... [2021-11-21 00:47:42,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:42" (1/1) ... [2021-11-21 00:47:42,569 INFO L137 Inliner]: procedures = 396, calls = 4490, calls flagged for inlining = 219, calls inlined = 198, statements flattened = 8918 [2021-11-21 00:47:42,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:47:42,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:47:42,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:47:42,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:47:42,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:42" (1/1) ... [2021-11-21 00:47:42,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:42" (1/1) ... [2021-11-21 00:47:42,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:42" (1/1) ... [2021-11-21 00:47:42,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:42" (1/1) ... [2021-11-21 00:47:42,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:42" (1/1) ... [2021-11-21 00:47:42,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:42" (1/1) ... [2021-11-21 00:47:42,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:42" (1/1) ... [2021-11-21 00:47:42,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:47:42,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:47:42,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:47:42,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:47:42,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:42" (1/1) ... [2021-11-21 00:47:42,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:47:43,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:47:43,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:47:43,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8437c709-aaec-4976-bf82-18848ad84a28/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:47:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2021-11-21 00:47:43,080 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2021-11-21 00:47:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-21 00:47:43,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-21 00:47:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2021-11-21 00:47:43,081 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2021-11-21 00:47:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2021-11-21 00:47:43,081 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2021-11-21 00:47:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:47:43,081 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:47:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2021-11-21 00:47:43,082 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2021-11-21 00:47:43,082 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2021-11-21 00:47:43,082 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2021-11-21 00:47:43,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:47:43,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:47:43,082 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2021-11-21 00:47:43,082 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2021-11-21 00:47:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2021-11-21 00:47:43,083 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2021-11-21 00:47:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2021-11-21 00:47:43,083 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2021-11-21 00:47:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2021-11-21 00:47:43,083 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2021-11-21 00:47:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2021-11-21 00:47:43,084 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2021-11-21 00:47:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2021-11-21 00:47:43,084 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2021-11-21 00:47:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2021-11-21 00:47:43,084 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2021-11-21 00:47:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:47:43,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:47:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-11-21 00:47:43,085 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-11-21 00:47:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:47:43,085 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:47:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:47:43,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:47:43,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:47:43,086 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2021-11-21 00:47:43,086 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2021-11-21 00:47:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2021-11-21 00:47:43,087 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2021-11-21 00:47:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2021-11-21 00:47:43,088 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2021-11-21 00:47:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-21 00:47:43,089 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-21 00:47:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 00:47:43,089 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 00:47:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2021-11-21 00:47:43,089 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2021-11-21 00:47:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2021-11-21 00:47:43,090 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2021-11-21 00:47:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2021-11-21 00:47:43,091 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2021-11-21 00:47:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-21 00:47:43,091 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-21 00:47:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:47:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2021-11-21 00:47:43,092 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2021-11-21 00:47:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2021-11-21 00:47:43,092 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2021-11-21 00:47:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:47:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:47:43,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:47:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2021-11-21 00:47:43,093 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2021-11-21 00:47:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2021-11-21 00:47:43,093 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2021-11-21 00:47:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:47:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2021-11-21 00:47:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2021-11-21 00:47:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:47:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:47:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:47:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:47:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2021-11-21 00:47:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2021-11-21 00:47:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2021-11-21 00:47:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2021-11-21 00:47:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2021-11-21 00:47:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2021-11-21 00:47:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:47:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2021-11-21 00:47:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2021-11-21 00:47:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2021-11-21 00:47:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2021-11-21 00:47:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:47:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:47:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2021-11-21 00:47:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2021-11-21 00:47:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 00:47:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 00:47:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:47:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2021-11-21 00:47:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2021-11-21 00:47:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:47:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:47:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2021-11-21 00:47:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2021-11-21 00:47:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:47:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2021-11-21 00:47:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2021-11-21 00:47:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2021-11-21 00:47:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2021-11-21 00:47:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:47:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:47:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2021-11-21 00:47:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2021-11-21 00:47:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2021-11-21 00:47:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2021-11-21 00:47:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 00:47:43,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 00:47:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2021-11-21 00:47:43,109 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2021-11-21 00:47:43,115 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-21 00:47:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-21 00:47:43,115 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:47:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:47:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:47:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:47:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 00:47:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 00:47:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-21 00:47:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-21 00:47:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:47:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:47:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:47:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:47:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-21 00:47:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-21 00:47:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-21 00:47:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-21 00:47:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2021-11-21 00:47:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2021-11-21 00:47:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 00:47:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 00:47:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2021-11-21 00:47:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2021-11-21 00:47:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-21 00:47:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-21 00:47:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2021-11-21 00:47:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2021-11-21 00:47:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2021-11-21 00:47:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2021-11-21 00:47:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2021-11-21 00:47:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2021-11-21 00:47:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 00:47:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 00:47:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2021-11-21 00:47:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2021-11-21 00:47:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:47:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:47:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-21 00:47:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-21 00:47:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 00:47:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 00:47:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:47:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:47:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:47:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2021-11-21 00:47:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2021-11-21 00:47:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:47:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2021-11-21 00:47:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2021-11-21 00:47:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2021-11-21 00:47:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2021-11-21 00:47:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2021-11-21 00:47:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2021-11-21 00:47:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-21 00:47:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-21 00:47:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:47:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2021-11-21 00:47:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2021-11-21 00:47:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 00:47:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 00:47:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2021-11-21 00:47:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2021-11-21 00:47:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 00:47:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 00:47:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:47:43,126 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:47:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2021-11-21 00:47:43,126 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2021-11-21 00:47:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:47:43,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:47:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 00:47:43,126 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 00:47:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2021-11-21 00:47:43,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2021-11-21 00:47:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-21 00:47:43,127 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-21 00:47:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 00:47:43,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 00:47:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2021-11-21 00:47:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2021-11-21 00:47:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2021-11-21 00:47:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2021-11-21 00:47:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2021-11-21 00:47:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2021-11-21 00:47:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:47:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:47:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2021-11-21 00:47:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2021-11-21 00:47:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2021-11-21 00:47:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2021-11-21 00:47:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2021-11-21 00:47:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2021-11-21 00:47:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:47:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2021-11-21 00:47:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2021-11-21 00:47:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:47:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:47:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2021-11-21 00:47:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2021-11-21 00:47:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-21 00:47:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-21 00:47:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-21 00:47:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-21 00:47:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2021-11-21 00:47:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2021-11-21 00:47:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:47:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:47:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 00:47:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 00:47:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2021-11-21 00:47:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2021-11-21 00:47:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2021-11-21 00:47:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2021-11-21 00:47:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2021-11-21 00:47:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2021-11-21 00:47:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2021-11-21 00:47:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2021-11-21 00:47:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2021-11-21 00:47:43,137 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2021-11-21 00:47:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-21 00:47:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:47:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-21 00:47:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-21 00:47:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2021-11-21 00:47:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2021-11-21 00:47:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:47:43,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:47:44,203 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:47:44,207 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:47:44,704 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:48:05,579 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:48:05,888 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:48:07,809 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:48:07,809 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:48:07,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:48:07 BoogieIcfgContainer [2021-11-21 00:48:07,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:48:07,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:48:07,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:48:07,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:48:07,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:47:37" (1/3) ... [2021-11-21 00:48:07,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bc5464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:48:07, skipping insertion in model container [2021-11-21 00:48:07,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:47:42" (2/3) ... [2021-11-21 00:48:07,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bc5464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:48:07, skipping insertion in model container [2021-11-21 00:48:07,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:48:07" (3/3) ... [2021-11-21 00:48:07,824 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2021-11-21 00:48:07,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:48:07,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:48:07,910 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:48:07,926 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 [2021-11-21 00:48:07,929 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 00:48:08,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 2014 states, 1226 states have (on average 1.3140293637846656) internal successors, (1611), 1229 states have internal predecessors, (1611), 674 states have call successors, (674), 113 states have call predecessors, (674), 112 states have return successors, (666), 666 states have call predecessors, (666), 666 states have call successors, (666) [2021-11-21 00:48:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-11-21 00:48:08,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:08,036 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 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] [2021-11-21 00:48:08,036 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:48:08,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:08,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1795498274, now seen corresponding path program 1 times [2021-11-21 00:48:08,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:08,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999999907] [2021-11-21 00:48:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:08,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2021-11-21 00:48:09,071 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:48:09,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999999907] [2021-11-21 00:48:09,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999999907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:48:09,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:48:09,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:48:09,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725334110] [2021-11-21 00:48:09,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:48:09,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:48:09,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:48:09,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:48:09,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:48:09,115 INFO L87 Difference]: Start difference. First operand has 2014 states, 1226 states have (on average 1.3140293637846656) internal successors, (1611), 1229 states have internal predecessors, (1611), 674 states have call successors, (674), 113 states have call predecessors, (674), 112 states have return successors, (666), 666 states have call predecessors, (666), 666 states have call successors, (666) Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-21 00:48:12,555 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 [] [2021-11-21 00:48:15,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:48:17,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:48:19,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:48:19,121 INFO L93 Difference]: Finished difference Result 5818 states and 8563 transitions. [2021-11-21 00:48:19,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:48:19,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 384 [2021-11-21 00:48:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:48:19,208 INFO L225 Difference]: With dead ends: 5818 [2021-11-21 00:48:19,208 INFO L226 Difference]: Without dead ends: 3865 [2021-11-21 00:48:19,230 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 [2021-11-21 00:48:19,238 INFO L933 BasicCegarLoop]: 3165 mSDtfsCounter, 2753 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:48:19,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2760 Valid, 5624 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2021-11-21 00:48:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-11-21 00:48:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3863. [2021-11-21 00:48:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 2370 states have (on average 1.310548523206751) internal successors, (3106), 2375 states have internal predecessors, (3106), 1270 states have call successors, (1270), 222 states have call predecessors, (1270), 221 states have return successors, (1274), 1267 states have call predecessors, (1274), 1267 states have call successors, (1274) [2021-11-21 00:48:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5650 transitions. [2021-11-21 00:48:19,695 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5650 transitions. Word has length 384 [2021-11-21 00:48:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:48:19,699 INFO L470 AbstractCegarLoop]: Abstraction has 3863 states and 5650 transitions. [2021-11-21 00:48:19,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-21 00:48:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5650 transitions. [2021-11-21 00:48:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-21 00:48:19,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:19,733 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:48:19,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:48:19,734 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:48:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:19,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1026032585, now seen corresponding path program 1 times [2021-11-21 00:48:19,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:19,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445505126] [2021-11-21 00:48:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:19,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2021-11-21 00:48:20,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:48:20,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445505126] [2021-11-21 00:48:20,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445505126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:48:20,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:48:20,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:48:20,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983155894] [2021-11-21 00:48:20,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:48:20,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:48:20,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:48:20,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:48:20,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:48:20,508 INFO L87 Difference]: Start difference. First operand 3863 states and 5650 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-21 00:48:24,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:48:27,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:48:29,375 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 [] [2021-11-21 00:48:30,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:48:30,444 INFO L93 Difference]: Finished difference Result 11261 states and 16470 transitions. [2021-11-21 00:48:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:48:30,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 438 [2021-11-21 00:48:30,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:48:30,532 INFO L225 Difference]: With dead ends: 11261 [2021-11-21 00:48:30,532 INFO L226 Difference]: Without dead ends: 7471 [2021-11-21 00:48:30,561 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 [2021-11-21 00:48:30,567 INFO L933 BasicCegarLoop]: 3137 mSDtfsCounter, 2640 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 5596 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:48:30,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2647 Valid, 5596 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 906 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2021-11-21 00:48:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2021-11-21 00:48:31,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7460. [2021-11-21 00:48:31,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7460 states, 4587 states have (on average 1.3091345105733594) internal successors, (6005), 4601 states have internal predecessors, (6005), 2437 states have call successors, (2437), 435 states have call predecessors, (2437), 434 states have return successors, (2455), 2427 states have call predecessors, (2455), 2434 states have call successors, (2455) [2021-11-21 00:48:31,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 10897 transitions. [2021-11-21 00:48:31,090 INFO L78 Accepts]: Start accepts. Automaton has 7460 states and 10897 transitions. Word has length 438 [2021-11-21 00:48:31,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:48:31,093 INFO L470 AbstractCegarLoop]: Abstraction has 7460 states and 10897 transitions. [2021-11-21 00:48:31,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-21 00:48:31,094 INFO L276 IsEmpty]: Start isEmpty. Operand 7460 states and 10897 transitions. [2021-11-21 00:48:31,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-21 00:48:31,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:31,125 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 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] [2021-11-21 00:48:31,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:48:31,125 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:48:31,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:31,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1237579625, now seen corresponding path program 1 times [2021-11-21 00:48:31,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:31,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686130432] [2021-11-21 00:48:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:31,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5375 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5375 trivial. 0 not checked. [2021-11-21 00:48:31,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:48:31,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686130432] [2021-11-21 00:48:31,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686130432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:48:31,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:48:31,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:48:31,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184010367] [2021-11-21 00:48:31,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:48:31,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:48:31,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:48:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:48:31,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:48:31,914 INFO L87 Difference]: Start difference. First operand 7460 states and 10897 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-21 00:48:35,892 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 [] [2021-11-21 00:48:38,837 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:48:41,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:48:42,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:48:42,598 INFO L93 Difference]: Finished difference Result 11221 states and 16414 transitions. [2021-11-21 00:48:42,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:48:42,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 432 [2021-11-21 00:48:42,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:48:42,716 INFO L225 Difference]: With dead ends: 11221 [2021-11-21 00:48:42,717 INFO L226 Difference]: Without dead ends: 11196 [2021-11-21 00:48:42,728 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 [2021-11-21 00:48:42,731 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 2810 mSDsluCounter, 6461 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 8781 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:48:42,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2817 Valid, 8781 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1342 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2021-11-21 00:48:42,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11196 states. [2021-11-21 00:48:43,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11196 to 11194. [2021-11-21 00:48:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11194 states, 6887 states have (on average 1.3100043560331058) internal successors, (9022), 6905 states have internal predecessors, (9022), 3649 states have call successors, (3649), 657 states have call predecessors, (3649), 656 states have return successors, (3702), 3637 states have call predecessors, (3702), 3646 states have call successors, (3702) [2021-11-21 00:48:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11194 states to 11194 states and 16373 transitions. [2021-11-21 00:48:43,489 INFO L78 Accepts]: Start accepts. Automaton has 11194 states and 16373 transitions. Word has length 432 [2021-11-21 00:48:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:48:43,490 INFO L470 AbstractCegarLoop]: Abstraction has 11194 states and 16373 transitions. [2021-11-21 00:48:43,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-21 00:48:43,491 INFO L276 IsEmpty]: Start isEmpty. Operand 11194 states and 16373 transitions. [2021-11-21 00:48:43,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-11-21 00:48:43,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:43,531 INFO L514 BasicCegarLoop]: trace histogram [38, 36, 36, 36, 36, 36, 36, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:48:43,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:48:43,531 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:48:43,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:43,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1074018903, now seen corresponding path program 1 times [2021-11-21 00:48:43,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:43,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532946508] [2021-11-21 00:48:43,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:43,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:43,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5287 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5276 trivial. 0 not checked. [2021-11-21 00:48:43,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:48:43,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532946508] [2021-11-21 00:48:43,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532946508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:48:43,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:48:43,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:48:43,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199273396] [2021-11-21 00:48:43,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:48:43,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:48:43,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:48:43,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:48:43,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:48:43,970 INFO L87 Difference]: Start difference. First operand 11194 states and 16373 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:48:47,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:48:50,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:48:52,827 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 [] [2021-11-21 00:48:53,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:48:53,475 INFO L93 Difference]: Finished difference Result 24321 states and 35506 transitions. [2021-11-21 00:48:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:48:53,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 460 [2021-11-21 00:48:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:48:53,586 INFO L225 Difference]: With dead ends: 24321 [2021-11-21 00:48:53,586 INFO L226 Difference]: Without dead ends: 13200 [2021-11-21 00:48:53,660 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 [2021-11-21 00:48:53,664 INFO L933 BasicCegarLoop]: 3184 mSDtfsCounter, 2642 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:48:53,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2649 Valid, 5661 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 891 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2021-11-21 00:48:53,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13200 states. [2021-11-21 00:48:54,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13200 to 13189. [2021-11-21 00:48:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13189 states, 8115 states have (on average 1.3086876155268021) internal successors, (10620), 8139 states have internal predecessors, (10620), 4270 states have call successors, (4270), 803 states have call predecessors, (4270), 802 states have return successors, (4330), 4253 states have call predecessors, (4330), 4267 states have call successors, (4330) [2021-11-21 00:48:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13189 states to 13189 states and 19220 transitions. [2021-11-21 00:48:54,407 INFO L78 Accepts]: Start accepts. Automaton has 13189 states and 19220 transitions. Word has length 460 [2021-11-21 00:48:54,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:48:54,409 INFO L470 AbstractCegarLoop]: Abstraction has 13189 states and 19220 transitions. [2021-11-21 00:48:54,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:48:54,409 INFO L276 IsEmpty]: Start isEmpty. Operand 13189 states and 19220 transitions. [2021-11-21 00:48:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2021-11-21 00:48:54,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:54,457 INFO L514 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 36, 36, 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] [2021-11-21 00:48:54,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:48:54,457 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:48:54,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:54,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1098845795, now seen corresponding path program 1 times [2021-11-21 00:48:54,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:54,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026340358] [2021-11-21 00:48:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:54,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5277 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5274 trivial. 0 not checked. [2021-11-21 00:48:54,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:48:54,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026340358] [2021-11-21 00:48:54,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026340358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:48:54,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:48:54,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:48:54,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192478879] [2021-11-21 00:48:54,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:48:54,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:48:54,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:48:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:48:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:48:54,889 INFO L87 Difference]: Start difference. First operand 13189 states and 19220 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-21 00:48:58,824 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 [] [2021-11-21 00:49:01,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:49:03,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:49:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:49:04,496 INFO L93 Difference]: Finished difference Result 31944 states and 46353 transitions. [2021-11-21 00:49:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:49:04,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 478 [2021-11-21 00:49:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:49:04,638 INFO L225 Difference]: With dead ends: 31944 [2021-11-21 00:49:04,638 INFO L226 Difference]: Without dead ends: 18828 [2021-11-21 00:49:04,720 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 [2021-11-21 00:49:04,721 INFO L933 BasicCegarLoop]: 2953 mSDtfsCounter, 1568 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 5378 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:49:04,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 5378 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 950 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2021-11-21 00:49:04,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18828 states. [2021-11-21 00:49:05,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18828 to 18804. [2021-11-21 00:49:05,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18804 states, 11631 states have (on average 1.3119250279425674) internal successors, (15259), 11683 states have internal predecessors, (15259), 5888 states have call successors, (5888), 1285 states have call predecessors, (5888), 1283 states have return successors, (6004), 5841 states have call predecessors, (6004), 5885 states have call successors, (6004) [2021-11-21 00:49:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18804 states to 18804 states and 27151 transitions. [2021-11-21 00:49:05,782 INFO L78 Accepts]: Start accepts. Automaton has 18804 states and 27151 transitions. Word has length 478 [2021-11-21 00:49:05,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:49:05,783 INFO L470 AbstractCegarLoop]: Abstraction has 18804 states and 27151 transitions. [2021-11-21 00:49:05,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-21 00:49:05,783 INFO L276 IsEmpty]: Start isEmpty. Operand 18804 states and 27151 transitions. [2021-11-21 00:49:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2021-11-21 00:49:05,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:49:05,846 INFO L514 BasicCegarLoop]: trace histogram [41, 36, 36, 36, 36, 36, 36, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:49:05,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:49:05,847 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:49:05,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:49:05,848 INFO L85 PathProgramCache]: Analyzing trace with hash -500108068, now seen corresponding path program 1 times [2021-11-21 00:49:05,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:49:05,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976112680] [2021-11-21 00:49:05,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:49:05,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:49:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:49:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5629 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5629 trivial. 0 not checked. [2021-11-21 00:49:06,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:49:06,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976112680] [2021-11-21 00:49:06,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976112680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:49:06,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:49:06,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:49:06,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362966318] [2021-11-21 00:49:06,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:49:06,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:49:06,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:49:06,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:49:06,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:49:06,625 INFO L87 Difference]: Start difference. First operand 18804 states and 27151 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-21 00:49:10,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:49:14,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:49:17,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:49:17,213 INFO L93 Difference]: Finished difference Result 26543 states and 39563 transitions. [2021-11-21 00:49:17,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:49:17,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 513 [2021-11-21 00:49:17,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:49:17,602 INFO L225 Difference]: With dead ends: 26543 [2021-11-21 00:49:17,603 INFO L226 Difference]: Without dead ends: 26541 [2021-11-21 00:49:17,615 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 [2021-11-21 00:49:17,616 INFO L933 BasicCegarLoop]: 4466 mSDtfsCounter, 4787 mSDsluCounter, 8315 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 368 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5158 SdHoareTripleChecker+Valid, 11677 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:49:17,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5158 Valid, 11677 Invalid, 2521 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [368 Valid, 2151 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2021-11-21 00:49:17,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26541 states. [2021-11-21 00:49:18,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26541 to 18910. [2021-11-21 00:49:18,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18910 states, 11697 states have (on average 1.311703855689493) internal successors, (15343), 11750 states have internal predecessors, (15343), 5910 states have call successors, (5910), 1302 states have call predecessors, (5910), 1301 states have return successors, (6026), 5863 states have call predecessors, (6026), 5907 states have call successors, (6026) [2021-11-21 00:49:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18910 states to 18910 states and 27279 transitions. [2021-11-21 00:49:18,870 INFO L78 Accepts]: Start accepts. Automaton has 18910 states and 27279 transitions. Word has length 513 [2021-11-21 00:49:18,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:49:18,871 INFO L470 AbstractCegarLoop]: Abstraction has 18910 states and 27279 transitions. [2021-11-21 00:49:18,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-21 00:49:18,872 INFO L276 IsEmpty]: Start isEmpty. Operand 18910 states and 27279 transitions. [2021-11-21 00:49:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2021-11-21 00:49:18,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:49:18,951 INFO L514 BasicCegarLoop]: trace histogram [43, 36, 36, 36, 36, 36, 36, 6, 6, 4, 4, 4, 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, 1] [2021-11-21 00:49:18,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:49:18,952 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:49:18,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:49:18,953 INFO L85 PathProgramCache]: Analyzing trace with hash -868495507, now seen corresponding path program 1 times [2021-11-21 00:49:18,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:49:18,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565532443] [2021-11-21 00:49:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:49:18,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:49:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:49:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5670 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 5652 trivial. 0 not checked. [2021-11-21 00:49:19,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:49:19,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565532443] [2021-11-21 00:49:19,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565532443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:49:19,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:49:19,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:49:19,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268499961] [2021-11-21 00:49:19,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:49:19,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:49:19,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:49:19,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:49:19,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:49:19,505 INFO L87 Difference]: Start difference. First operand 18910 states and 27279 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-21 00:49:23,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:49:25,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:49:29,260 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 [] [2021-11-21 00:49:29,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:49:29,800 INFO L93 Difference]: Finished difference Result 43028 states and 62061 transitions. [2021-11-21 00:49:29,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:49:29,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 546 [2021-11-21 00:49:29,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:49:29,986 INFO L225 Difference]: With dead ends: 43028 [2021-11-21 00:49:29,986 INFO L226 Difference]: Without dead ends: 25140 [2021-11-21 00:49:30,075 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 [2021-11-21 00:49:30,076 INFO L933 BasicCegarLoop]: 3794 mSDtfsCounter, 1597 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 6187 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:49:30,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 6187 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1195 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2021-11-21 00:49:30,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25140 states. [2021-11-21 00:49:31,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25140 to 25119. [2021-11-21 00:49:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25119 states, 15562 states have (on average 1.313198817632695) internal successors, (20436), 15642 states have internal predecessors, (20436), 7776 states have call successors, (7776), 1781 states have call predecessors, (7776), 1779 states have return successors, (7962), 7701 states have call predecessors, (7962), 7773 states have call successors, (7962) [2021-11-21 00:49:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25119 states to 25119 states and 36174 transitions. [2021-11-21 00:49:31,637 INFO L78 Accepts]: Start accepts. Automaton has 25119 states and 36174 transitions. Word has length 546 [2021-11-21 00:49:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:49:31,639 INFO L470 AbstractCegarLoop]: Abstraction has 25119 states and 36174 transitions. [2021-11-21 00:49:31,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-21 00:49:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 25119 states and 36174 transitions. [2021-11-21 00:49:31,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2021-11-21 00:49:31,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:49:31,738 INFO L514 BasicCegarLoop]: trace histogram [45, 36, 36, 36, 36, 36, 36, 26, 26, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:49:31,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:49:31,739 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:49:31,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:49:31,740 INFO L85 PathProgramCache]: Analyzing trace with hash 665917242, now seen corresponding path program 1 times [2021-11-21 00:49:31,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:49:31,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940260836] [2021-11-21 00:49:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:49:31,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:49:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:49:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7242 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 7221 trivial. 0 not checked. [2021-11-21 00:49:32,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:49:32,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940260836] [2021-11-21 00:49:32,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940260836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:49:32,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:49:32,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:49:32,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233463875] [2021-11-21 00:49:32,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:49:32,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:49:32,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:49:32,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:49:32,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:49:32,789 INFO L87 Difference]: Start difference. First operand 25119 states and 36174 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2021-11-21 00:49:36,620 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 [] [2021-11-21 00:49:38,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:49:42,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:49:43,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:49:43,279 INFO L93 Difference]: Finished difference Result 72261 states and 104140 transitions. [2021-11-21 00:49:43,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:49:43,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 736 [2021-11-21 00:49:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:49:43,558 INFO L225 Difference]: With dead ends: 72261 [2021-11-21 00:49:43,558 INFO L226 Difference]: Without dead ends: 48164 [2021-11-21 00:49:43,680 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 [2021-11-21 00:49:43,681 INFO L933 BasicCegarLoop]: 4016 mSDtfsCounter, 2652 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2659 SdHoareTripleChecker+Valid, 6472 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:49:43,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2659 Valid, 6472 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1145 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2021-11-21 00:49:43,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48164 states. [2021-11-21 00:49:46,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48164 to 48159. [2021-11-21 00:49:46,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48159 states, 29914 states have (on average 1.3115932339372869) internal successors, (39235), 30016 states have internal predecessors, (39235), 14836 states have call successors, (14836), 3409 states have call predecessors, (14836), 3407 states have return successors, (15218), 14745 states have call predecessors, (15218), 14833 states have call successors, (15218) [2021-11-21 00:49:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48159 states to 48159 states and 69289 transitions. [2021-11-21 00:49:46,640 INFO L78 Accepts]: Start accepts. Automaton has 48159 states and 69289 transitions. Word has length 736 [2021-11-21 00:49:46,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:49:46,641 INFO L470 AbstractCegarLoop]: Abstraction has 48159 states and 69289 transitions. [2021-11-21 00:49:46,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2021-11-21 00:49:46,642 INFO L276 IsEmpty]: Start isEmpty. Operand 48159 states and 69289 transitions. [2021-11-21 00:49:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2021-11-21 00:49:47,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:49:47,018 INFO L514 BasicCegarLoop]: trace histogram [46, 36, 36, 36, 36, 36, 36, 27, 27, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:49:47,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:49:47,019 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:49:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:49:47,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1354381764, now seen corresponding path program 1 times [2021-11-21 00:49:47,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:49:47,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600360235] [2021-11-21 00:49:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:49:47,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:49:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:49:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7444 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 7380 trivial. 0 not checked. [2021-11-21 00:49:47,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:49:47,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600360235] [2021-11-21 00:49:47,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600360235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:49:47,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:49:47,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:49:47,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680256283] [2021-11-21 00:49:47,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:49:47,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:49:47,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:49:47,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:49:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:49:47,538 INFO L87 Difference]: Start difference. First operand 48159 states and 69289 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2021-11-21 00:49:51,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:49:53,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:49:59,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:50:02,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:50:04,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:50:06,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:06,499 INFO L93 Difference]: Finished difference Result 111298 states and 159649 transitions. [2021-11-21 00:50:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:50:06,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) Word has length 755 [2021-11-21 00:50:06,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:07,060 INFO L225 Difference]: With dead ends: 111298 [2021-11-21 00:50:07,061 INFO L226 Difference]: Without dead ends: 64161 [2021-11-21 00:50:07,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:50:07,309 INFO L933 BasicCegarLoop]: 3991 mSDtfsCounter, 2390 mSDsluCounter, 3563 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 214 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 6900 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:07,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2397 Valid, 6900 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 2162 Invalid, 5 Unknown, 0 Unchecked, 16.5s Time] [2021-11-21 00:50:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64161 states. [2021-11-21 00:50:10,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64161 to 64140. [2021-11-21 00:50:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64140 states, 39873 states have (on average 1.3102349961126576) internal successors, (52243), 40007 states have internal predecessors, (52243), 19436 states have call successors, (19436), 4831 states have call predecessors, (19436), 4829 states have return successors, (20049), 19313 states have call predecessors, (20049), 19433 states have call successors, (20049) [2021-11-21 00:50:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64140 states to 64140 states and 91728 transitions. [2021-11-21 00:50:10,904 INFO L78 Accepts]: Start accepts. Automaton has 64140 states and 91728 transitions. Word has length 755 [2021-11-21 00:50:10,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:10,906 INFO L470 AbstractCegarLoop]: Abstraction has 64140 states and 91728 transitions. [2021-11-21 00:50:10,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2021-11-21 00:50:10,907 INFO L276 IsEmpty]: Start isEmpty. Operand 64140 states and 91728 transitions. [2021-11-21 00:50:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2021-11-21 00:50:11,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:11,231 INFO L514 BasicCegarLoop]: trace histogram [48, 36, 36, 36, 36, 36, 36, 28, 28, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:50:11,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:50:11,232 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:50:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:11,233 INFO L85 PathProgramCache]: Analyzing trace with hash -339309566, now seen corresponding path program 1 times [2021-11-21 00:50:11,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:11,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552141752] [2021-11-21 00:50:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:11,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7761 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 7677 trivial. 0 not checked. [2021-11-21 00:50:12,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:12,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552141752] [2021-11-21 00:50:12,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552141752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:12,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:12,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:50:12,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253725162] [2021-11-21 00:50:12,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:12,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:50:12,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:12,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:50:12,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:50:12,228 INFO L87 Difference]: Start difference. First operand 64140 states and 91728 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) [2021-11-21 00:50:16,440 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 [] [2021-11-21 00:50:18,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:50:24,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:50:28,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:28,428 INFO L93 Difference]: Finished difference Result 139434 states and 199424 transitions. [2021-11-21 00:50:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:50:28,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) Word has length 808 [2021-11-21 00:50:28,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:28,960 INFO L225 Difference]: With dead ends: 139434 [2021-11-21 00:50:28,960 INFO L226 Difference]: Without dead ends: 76316 [2021-11-21 00:50:29,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:50:29,531 INFO L933 BasicCegarLoop]: 3795 mSDtfsCounter, 1579 mSDsluCounter, 6548 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 9268 SdHoareTripleChecker+Invalid, 2636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:29,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1586 Valid, 9268 Invalid, 2636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2627 Invalid, 3 Unknown, 0 Unchecked, 13.0s Time] [2021-11-21 00:50:29,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76316 states. [2021-11-21 00:50:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76316 to 76295. [2021-11-21 00:50:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76295 states, 47462 states have (on average 1.311048839071257) internal successors, (62225), 47627 states have internal predecessors, (62225), 23042 states have call successors, (23042), 5792 states have call predecessors, (23042), 5789 states have return successors, (23809), 22887 states have call predecessors, (23809), 23039 states have call successors, (23809) [2021-11-21 00:50:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76295 states to 76295 states and 109076 transitions. [2021-11-21 00:50:33,522 INFO L78 Accepts]: Start accepts. Automaton has 76295 states and 109076 transitions. Word has length 808 [2021-11-21 00:50:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:33,524 INFO L470 AbstractCegarLoop]: Abstraction has 76295 states and 109076 transitions. [2021-11-21 00:50:33,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) [2021-11-21 00:50:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 76295 states and 109076 transitions. [2021-11-21 00:50:34,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2021-11-21 00:50:34,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:34,157 INFO L514 BasicCegarLoop]: trace histogram [50, 36, 36, 36, 36, 36, 36, 29, 29, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:50:34,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:50:34,158 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:50:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:34,162 INFO L85 PathProgramCache]: Analyzing trace with hash -151814824, now seen corresponding path program 1 times [2021-11-21 00:50:34,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:34,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538864937] [2021-11-21 00:50:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:34,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:34,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8090 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 7985 trivial. 0 not checked. [2021-11-21 00:50:34,840 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:34,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538864937] [2021-11-21 00:50:34,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538864937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:34,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:34,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:50:34,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483727472] [2021-11-21 00:50:34,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:34,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:50:34,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:34,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:50:34,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:50:34,845 INFO L87 Difference]: Start difference. First operand 76295 states and 109076 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 3 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2021-11-21 00:50:38,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:50:40,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:50:47,178 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 [] [2021-11-21 00:50:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:50,552 INFO L93 Difference]: Finished difference Result 163912 states and 234360 transitions. [2021-11-21 00:50:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:50:50,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 3 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) Word has length 831 [2021-11-21 00:50:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:51,167 INFO L225 Difference]: With dead ends: 163912 [2021-11-21 00:50:51,168 INFO L226 Difference]: Without dead ends: 88639 [2021-11-21 00:50:51,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:50:51,388 INFO L933 BasicCegarLoop]: 3799 mSDtfsCounter, 1631 mSDsluCounter, 6467 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 9226 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:51,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1638 Valid, 9226 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2603 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2021-11-21 00:50:51,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88639 states. [2021-11-21 00:50:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88639 to 88618. [2021-11-21 00:50:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88618 states, 55159 states have (on average 1.3110281187113617) internal successors, (72315), 55355 states have internal predecessors, (72315), 26684 states have call successors, (26684), 6777 states have call predecessors, (26684), 6773 states have return successors, (27605), 26497 states have call predecessors, (27605), 26681 states have call successors, (27605) [2021-11-21 00:50:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88618 states to 88618 states and 126604 transitions. [2021-11-21 00:50:55,109 INFO L78 Accepts]: Start accepts. Automaton has 88618 states and 126604 transitions. Word has length 831 [2021-11-21 00:50:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:55,110 INFO L470 AbstractCegarLoop]: Abstraction has 88618 states and 126604 transitions. [2021-11-21 00:50:55,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 3 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2021-11-21 00:50:55,111 INFO L276 IsEmpty]: Start isEmpty. Operand 88618 states and 126604 transitions. [2021-11-21 00:50:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2021-11-21 00:50:55,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:55,363 INFO L514 BasicCegarLoop]: trace histogram [52, 36, 36, 36, 36, 36, 36, 31, 31, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:50:55,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:50:55,363 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:50:55,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1567080737, now seen corresponding path program 1 times [2021-11-21 00:50:55,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:55,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982941085] [2021-11-21 00:50:55,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:55,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8631 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 8502 trivial. 0 not checked. [2021-11-21 00:50:56,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:56,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982941085] [2021-11-21 00:50:56,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982941085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:56,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:56,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:50:56,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806452557] [2021-11-21 00:50:56,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:56,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:50:56,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:56,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:50:56,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:50:56,300 INFO L87 Difference]: Start difference. First operand 88618 states and 126604 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 3 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2021-11-21 00:51:03,387 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 [] [2021-11-21 00:51:06,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:51:09,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:51:12,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:51:12,052 INFO L93 Difference]: Finished difference Result 218239 states and 316958 transitions. [2021-11-21 00:51:12,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:51:12,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 3 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) Word has length 873 [2021-11-21 00:51:12,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:51:13,006 INFO L225 Difference]: With dead ends: 218239 [2021-11-21 00:51:13,006 INFO L226 Difference]: Without dead ends: 130643 [2021-11-21 00:51:13,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:51:13,287 INFO L933 BasicCegarLoop]: 4523 mSDtfsCounter, 2813 mSDsluCounter, 8263 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 332 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3161 SdHoareTripleChecker+Valid, 11644 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:51:13,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3161 Valid, 11644 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2278 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2021-11-21 00:51:13,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130643 states. [2021-11-21 00:51:18,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130643 to 101253. [2021-11-21 00:51:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101253 states, 63036 states have (on average 1.3115204010406751) internal successors, (82673), 63267 states have internal predecessors, (82673), 30402 states have call successors, (30402), 7818 states have call predecessors, (30402), 7813 states have return successors, (31435), 30179 states have call predecessors, (31435), 30399 states have call successors, (31435) [2021-11-21 00:51:19,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101253 states to 101253 states and 144510 transitions. [2021-11-21 00:51:19,118 INFO L78 Accepts]: Start accepts. Automaton has 101253 states and 144510 transitions. Word has length 873 [2021-11-21 00:51:19,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:51:19,119 INFO L470 AbstractCegarLoop]: Abstraction has 101253 states and 144510 transitions. [2021-11-21 00:51:19,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 3 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2021-11-21 00:51:19,120 INFO L276 IsEmpty]: Start isEmpty. Operand 101253 states and 144510 transitions. [2021-11-21 00:51:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2021-11-21 00:51:19,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:51:19,462 INFO L514 BasicCegarLoop]: trace histogram [52, 36, 36, 36, 36, 36, 36, 31, 31, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:51:19,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:51:19,463 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:51:19,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:51:19,463 INFO L85 PathProgramCache]: Analyzing trace with hash 581013380, now seen corresponding path program 1 times [2021-11-21 00:51:19,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:51:19,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913551577] [2021-11-21 00:51:19,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:51:19,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:51:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:51:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 8628 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 8501 trivial. 0 not checked. [2021-11-21 00:51:19,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:51:19,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913551577] [2021-11-21 00:51:19,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913551577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:51:19,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:51:19,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:51:19,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057025496] [2021-11-21 00:51:19,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:51:19,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:51:19,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:51:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:51:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:51:19,994 INFO L87 Difference]: Start difference. First operand 101253 states and 144510 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 3 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88)