./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.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_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/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_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/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_490140a9-eabd-4bae-b943-460a50bef88d/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 a521111bd175d3310336dcb5a96ef10ad6928036ed2148cdf12f5390a99f6bb7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 02:00:03,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 02:00:03,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 02:00:03,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 02:00:03,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 02:00:03,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 02:00:03,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 02:00:03,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 02:00:03,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 02:00:03,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 02:00:03,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 02:00:03,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 02:00:03,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 02:00:03,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 02:00:03,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 02:00:03,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 02:00:03,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 02:00:03,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 02:00:03,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 02:00:03,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 02:00:03,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 02:00:03,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 02:00:03,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 02:00:03,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 02:00:03,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 02:00:03,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 02:00:03,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 02:00:03,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 02:00:03,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 02:00:03,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 02:00:03,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 02:00:03,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 02:00:03,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 02:00:03,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 02:00:03,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 02:00:03,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 02:00:03,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 02:00:03,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 02:00:03,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 02:00:03,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 02:00:03,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 02:00:03,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 02:00:03,827 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 02:00:03,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 02:00:03,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 02:00:03,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 02:00:03,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 02:00:03,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 02:00:03,838 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 02:00:03,839 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 02:00:03,839 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 02:00:03,839 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 02:00:03,841 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 02:00:03,841 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 02:00:03,841 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 02:00:03,842 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 02:00:03,842 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 02:00:03,842 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 02:00:03,843 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 02:00:03,843 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 02:00:03,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 02:00:03,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 02:00:03,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 02:00:03,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 02:00:03,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 02:00:03,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 02:00:03,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 02:00:03,847 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 02:00:03,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 02:00:03,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 02:00:03,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 02:00:03,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 02:00:03,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 02:00:03,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 02:00:03,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 02:00:03,852 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 02:00:03,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 02:00:03,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 02:00:03,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 02:00:03,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 02:00:03,853 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_490140a9-eabd-4bae-b943-460a50bef88d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a521111bd175d3310336dcb5a96ef10ad6928036ed2148cdf12f5390a99f6bb7 [2021-11-21 02:00:04,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 02:00:04,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 02:00:04,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 02:00:04,201 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 02:00:04,202 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 02:00:04,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i [2021-11-21 02:00:04,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/data/4d636d6ce/265dc7fee16b4e4f955146790ed19373/FLAGe6ad378dd [2021-11-21 02:00:05,800 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 02:00:05,801 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i [2021-11-21 02:00:05,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/data/4d636d6ce/265dc7fee16b4e4f955146790ed19373/FLAGe6ad378dd [2021-11-21 02:00:06,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/data/4d636d6ce/265dc7fee16b4e4f955146790ed19373 [2021-11-21 02:00:06,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 02:00:06,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 02:00:06,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 02:00:06,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 02:00:06,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 02:00:06,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:00:06" (1/1) ... [2021-11-21 02:00:06,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e0e3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:06, skipping insertion in model container [2021-11-21 02:00:06,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:00:06" (1/1) ... [2021-11-21 02:00:06,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 02:00:06,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 02:00:13,083 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_490140a9-eabd-4bae-b943-460a50bef88d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599511,599524] [2021-11-21 02:00:13,087 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_490140a9-eabd-4bae-b943-460a50bef88d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599658,599671] [2021-11-21 02:00:13,088 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_490140a9-eabd-4bae-b943-460a50bef88d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599797,599810] [2021-11-21 02:00:13,093 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_490140a9-eabd-4bae-b943-460a50bef88d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599955,599968] [2021-11-21 02:00:13,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 02:00:13,335 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 02:00:14,383 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_490140a9-eabd-4bae-b943-460a50bef88d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599511,599524] [2021-11-21 02:00:14,384 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_490140a9-eabd-4bae-b943-460a50bef88d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599658,599671] [2021-11-21 02:00:14,384 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_490140a9-eabd-4bae-b943-460a50bef88d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599797,599810] [2021-11-21 02:00:14,385 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_490140a9-eabd-4bae-b943-460a50bef88d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599955,599968] [2021-11-21 02:00:14,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 02:00:14,770 INFO L208 MainTranslator]: Completed translation [2021-11-21 02:00:14,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:14 WrapperNode [2021-11-21 02:00:14,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 02:00:14,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 02:00:14,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 02:00:14,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 02:00:14,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:14" (1/1) ... [2021-11-21 02:00:15,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:14" (1/1) ... [2021-11-21 02:00:15,647 INFO L137 Inliner]: procedures = 547, calls = 8792, calls flagged for inlining = 309, calls inlined = 249, statements flattened = 13527 [2021-11-21 02:00:15,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 02:00:15,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 02:00:15,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 02:00:15,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 02:00:15,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:14" (1/1) ... [2021-11-21 02:00:15,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:14" (1/1) ... [2021-11-21 02:00:15,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:14" (1/1) ... [2021-11-21 02:00:15,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:14" (1/1) ... [2021-11-21 02:00:16,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:14" (1/1) ... [2021-11-21 02:00:16,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:14" (1/1) ... [2021-11-21 02:00:16,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:14" (1/1) ... [2021-11-21 02:00:16,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 02:00:16,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 02:00:16,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 02:00:16,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 02:00:16,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:14" (1/1) ... [2021-11-21 02:00:16,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 02:00:16,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:00:16,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 02:00:16,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 02:00:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 02:00:16,869 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 02:00:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-21 02:00:16,870 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-21 02:00:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 02:00:16,870 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 02:00:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 02:00:16,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 02:00:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_v4l2_read [2021-11-21 02:00:16,871 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_v4l2_read [2021-11-21 02:00:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_v4l2_release [2021-11-21 02:00:16,871 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_v4l2_release [2021-11-21 02:00:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_find_control [2021-11-21 02:00:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_find_control [2021-11-21 02:00:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2021-11-21 02:00:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2021-11-21 02:00:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_ctrl_add_mapping [2021-11-21 02:00:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_ctrl_add_mapping [2021-11-21 02:00:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_buffer_finish [2021-11-21 02:00:16,873 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_buffer_finish [2021-11-21 02:00:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-11-21 02:00:16,873 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-11-21 02:00:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-21 02:00:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_wait_prepare [2021-11-21 02:00:16,874 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_wait_prepare [2021-11-21 02:00:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_alloc_urb_buffers [2021-11-21 02:00:16,874 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_alloc_urb_buffers [2021-11-21 02:00:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_video_clock_reset [2021-11-21 02:00:16,874 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_video_clock_reset [2021-11-21 02:00:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure usb_match_one_id [2021-11-21 02:00:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_match_one_id [2021-11-21 02:00:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 02:00:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 02:00:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 02:00:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get_ts [2021-11-21 02:00:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get_ts [2021-11-21 02:00:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_entity_by_id [2021-11-21 02:00:16,891 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_entity_by_id [2021-11-21 02:00:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 02:00:16,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 02:00:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-21 02:00:16,892 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-21 02:00:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 02:00:16,892 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 02:00:16,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 02:00:16,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 02:00:16,893 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 02:00:16,893 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 02:00:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-11-21 02:00:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-11-21 02:00:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 02:00:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure __chk_range_not_ok [2021-11-21 02:00:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __chk_range_not_ok [2021-11-21 02:00:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_query_v4l2_ctrl [2021-11-21 02:00:16,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_query_v4l2_ctrl [2021-11-21 02:00:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_data [2021-11-21 02:00:16,895 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_data [2021-11-21 02:00:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-21 02:00:16,896 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-21 02:00:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-11-21 02:00:16,896 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-11-21 02:00:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_v4l2_ioctl [2021-11-21 02:00:16,897 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_v4l2_ioctl [2021-11-21 02:00:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 02:00:16,897 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 02:00:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_populate_cache [2021-11-21 02:00:16,898 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_populate_cache [2021-11-21 02:00:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 02:00:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_add_info [2021-11-21 02:00:16,898 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_add_info [2021-11-21 02:00:16,899 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 02:00:16,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 02:00:16,899 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_buffer_done [2021-11-21 02:00:16,899 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_buffer_done [2021-11-21 02:00:16,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 02:00:16,900 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_query_ctrl [2021-11-21 02:00:16,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_query_ctrl [2021-11-21 02:00:16,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 02:00:16,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 02:00:16,901 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_wait_finish [2021-11-21 02:00:16,901 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_wait_finish [2021-11-21 02:00:16,901 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_reset_resume [2021-11-21 02:00:16,901 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_reset_resume [2021-11-21 02:00:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2021-11-21 02:00:16,902 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2021-11-21 02:00:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 02:00:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user [2021-11-21 02:00:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user [2021-11-21 02:00:16,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 02:00:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 02:00:16,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 02:00:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 02:00:16,904 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-21 02:00:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-21 02:00:16,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 02:00:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 02:00:16,905 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_scan_chain_forward [2021-11-21 02:00:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_scan_chain_forward [2021-11-21 02:00:16,905 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2021-11-21 02:00:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2021-11-21 02:00:16,905 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_commit_video [2021-11-21 02:00:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_commit_video [2021-11-21 02:00:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-21 02:00:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-21 02:00:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-21 02:00:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2021-11-21 02:00:16,907 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2021-11-21 02:00:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 02:00:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-21 02:00:16,908 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-21 02:00:16,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 02:00:16,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 02:00:16,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 02:00:16,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 02:00:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_ctrl_get [2021-11-21 02:00:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_ctrl_get [2021-11-21 02:00:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 02:00:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_find_endpoint [2021-11-21 02:00:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_find_endpoint [2021-11-21 02:00:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 02:00:16,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 02:00:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 02:00:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 02:00:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_endpoint_max_bpi [2021-11-21 02:00:16,930 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_endpoint_max_bpi [2021-11-21 02:00:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 02:00:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 02:00:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_set_video_ctrl [2021-11-21 02:00:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_set_video_ctrl [2021-11-21 02:00:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-21 02:00:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-21 02:00:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_delete [2021-11-21 02:00:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_delete [2021-11-21 02:00:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_commit_entity [2021-11-21 02:00:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_commit_entity [2021-11-21 02:00:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_free_urb_buffers [2021-11-21 02:00:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_free_urb_buffers [2021-11-21 02:00:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_del_event [2021-11-21 02:00:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_del_event [2021-11-21 02:00:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2021-11-21 02:00:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2021-11-21 02:00:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_v4l2_open [2021-11-21 02:00:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_v4l2_open [2021-11-21 02:00:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 02:00:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 02:00:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-21 02:00:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-21 02:00:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 02:00:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 02:00:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 02:00:16,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 02:00:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2021-11-21 02:00:16,935 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2021-11-21 02:00:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_fill_event [2021-11-21 02:00:16,935 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_fill_event [2021-11-21 02:00:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-11-21 02:00:16,936 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-11-21 02:00:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_plane_payload [2021-11-21 02:00:16,936 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_plane_payload [2021-11-21 02:00:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2021-11-21 02:00:16,936 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2021-11-21 02:00:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-21 02:00:16,937 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-21 02:00:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-21 02:00:16,937 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-21 02:00:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-21 02:00:16,937 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-21 02:00:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_debugfs_cleanup [2021-11-21 02:00:16,938 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_debugfs_cleanup [2021-11-21 02:00:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-11-21 02:00:16,938 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-11-21 02:00:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 02:00:16,938 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 02:00:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_queue_fh [2021-11-21 02:00:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_queue_fh [2021-11-21 02:00:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_init_video [2021-11-21 02:00:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_init_video [2021-11-21 02:00:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_status_start [2021-11-21 02:00:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_status_start [2021-11-21 02:00:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 02:00:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 02:00:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_intf [2021-11-21 02:00:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_intf [2021-11-21 02:00:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2021-11-21 02:00:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2021-11-21 02:00:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2021-11-21 02:00:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2021-11-21 02:00:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_find_control [2021-11-21 02:00:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_find_control [2021-11-21 02:00:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_video_clock_cleanup [2021-11-21 02:00:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_video_clock_cleanup [2021-11-21 02:00:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-21 02:00:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-21 02:00:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-21 02:00:16,942 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-21 02:00:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2021-11-21 02:00:16,942 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2021-11-21 02:00:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_buffer_prepare [2021-11-21 02:00:16,942 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_buffer_prepare [2021-11-21 02:00:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 02:00:16,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 02:00:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_set_zoom [2021-11-21 02:00:16,943 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_set_zoom [2021-11-21 02:00:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_test_bit [2021-11-21 02:00:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_test_bit [2021-11-21 02:00:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 02:00:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 02:00:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 02:00:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure copy_in_user [2021-11-21 02:00:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_in_user [2021-11-21 02:00:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 02:00:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_uvc_cleanup_10_2 [2021-11-21 02:00:16,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_uvc_cleanup_10_2 [2021-11-21 02:00:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_status_stop [2021-11-21 02:00:16,957 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_status_stop [2021-11-21 02:00:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_alloc_entity [2021-11-21 02:00:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_alloc_entity [2021-11-21 02:00:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2021-11-21 02:00:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2021-11-21 02:00:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_query_ctrl [2021-11-21 02:00:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_query_ctrl [2021-11-21 02:00:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 02:00:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 02:00:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 02:00:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-21 02:00:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-21 02:00:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 02:00:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 02:00:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 02:00:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 02:00:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_dismiss_privileges [2021-11-21 02:00:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_dismiss_privileges [2021-11-21 02:00:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 02:00:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 02:00:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-21 02:00:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-21 02:00:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~__u8~0~X~$Pointer$~TO~~__s32~0 [2021-11-21 02:00:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~__u8~0~X~$Pointer$~TO~~__s32~0 [2021-11-21 02:00:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 02:00:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 02:00:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_video_clock_host_sof [2021-11-21 02:00:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_video_clock_host_sof [2021-11-21 02:00:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-21 02:00:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-21 02:00:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 02:00:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 02:00:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 02:00:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 02:00:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure compat_alloc_user_space [2021-11-21 02:00:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_alloc_user_space [2021-11-21 02:00:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_plane_size [2021-11-21 02:00:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_plane_size [2021-11-21 02:00:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2021-11-21 02:00:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2021-11-21 02:00:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_print_terms [2021-11-21 02:00:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_print_terms [2021-11-21 02:00:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-21 02:00:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-21 02:00:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_has_privileges [2021-11-21 02:00:16,965 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_has_privileges [2021-11-21 02:00:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_video_enable [2021-11-21 02:00:16,965 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_video_enable [2021-11-21 02:00:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 02:00:16,965 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 02:00:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 02:00:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 02:00:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 02:00:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-21 02:00:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-21 02:00:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure media_entity_init [2021-11-21 02:00:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure media_entity_init [2021-11-21 02:00:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 02:00:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 02:00:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_entity_match_guid [2021-11-21 02:00:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_entity_match_guid [2021-11-21 02:00:16,987 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-21 02:00:16,988 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-21 02:00:16,988 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_uninit_video [2021-11-21 02:00:16,988 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_uninit_video [2021-11-21 02:00:16,988 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_debugfs_cleanup_stream [2021-11-21 02:00:16,988 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_debugfs_cleanup_stream [2021-11-21 02:00:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2021-11-21 02:00:16,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2021-11-21 02:00:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_queue_enable [2021-11-21 02:00:16,989 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_queue_enable [2021-11-21 02:00:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_get_video_ctrl [2021-11-21 02:00:16,990 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_get_video_ctrl [2021-11-21 02:00:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2021-11-21 02:00:16,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2021-11-21 02:00:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-21 02:00:16,991 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-21 02:00:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_drv_priv [2021-11-21 02:00:16,991 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_drv_priv [2021-11-21 02:00:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-21 02:00:16,991 INFO L138 BoogieDeclarations]: Found implementation of procedure strcasecmp [2021-11-21 02:00:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-21 02:00:16,992 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-21 02:00:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_buffer_queue [2021-11-21 02:00:16,992 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_buffer_queue [2021-11-21 02:00:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_resume [2021-11-21 02:00:16,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_resume [2021-11-21 02:00:16,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 02:00:16,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 02:00:16,993 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_unregister_video [2021-11-21 02:00:16,993 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_unregister_video [2021-11-21 02:00:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intf [2021-11-21 02:00:16,994 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intf [2021-11-21 02:00:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_resume [2021-11-21 02:00:16,994 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_resume [2021-11-21 02:00:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure kmemdup [2021-11-21 02:00:16,995 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemdup [2021-11-21 02:00:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure media_entity_cleanup [2021-11-21 02:00:16,995 INFO L138 BoogieDeclarations]: Found implementation of procedure media_entity_cleanup [2021-11-21 02:00:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_queue_streaming [2021-11-21 02:00:16,996 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_queue_streaming [2021-11-21 02:00:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_disconnect [2021-11-21 02:00:16,996 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_disconnect [2021-11-21 02:00:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 02:00:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2021-11-21 02:00:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2021-11-21 02:00:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_get_zoom [2021-11-21 02:00:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_get_zoom [2021-11-21 02:00:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 02:00:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 02:00:18,640 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 02:00:18,650 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 02:00:18,947 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 02:00:20,080 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11774: assume 0 != __copy_to_user_nocheck_~tmp___0~26#1;__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-21 02:00:20,080 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11774: assume !(0 != __copy_to_user_nocheck_~tmp___0~26#1);__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-21 02:00:20,081 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11788: assume 0 != __copy_to_user_nocheck_~tmp___1~15#1;__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-21 02:00:20,081 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11788: assume !(0 != __copy_to_user_nocheck_~tmp___1~15#1);__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-21 02:00:20,081 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11747: assume 16 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-21 02:00:20,081 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11747: assume !(16 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-21 02:00:20,081 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11751: SUMMARY for call __copy_to_user_nocheck_#t~ret1088#1 := copy_user_generic(__copy_to_user_nocheck_~dst#1.base, __copy_to_user_nocheck_~dst#1.offset, __copy_to_user_nocheck_~src#1.base, __copy_to_user_nocheck_~src#1.offset, __copy_to_user_nocheck_~size#1); srcloc: null [2021-11-21 02:00:20,082 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11772: assume -9223372036854775808 <= __copy_to_user_nocheck_#t~ret1086#1 && __copy_to_user_nocheck_#t~ret1086#1 <= 9223372036854775807;__copy_to_user_nocheck_~tmp___0~26#1 := __copy_to_user_nocheck_#t~ret1086#1;havoc __copy_to_user_nocheck_#t~ret1086#1; [2021-11-21 02:00:20,082 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11739: assume 8 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-21 02:00:20,082 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11739: assume !(8 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-21 02:00:20,082 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11743: assume 10 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-21 02:00:20,082 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11743: assume !(10 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-21 02:00:20,083 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11731: assume 2 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-21 02:00:20,083 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11731: assume !(2 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-21 02:00:20,083 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11735: assume 4 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-21 02:00:20,083 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11735: assume !(4 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-21 02:00:20,084 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11748: SUMMARY for call __copy_to_user_nocheck_#t~ret1087#1 := ldv__builtin_expect((if 0 != __copy_to_user_nocheck_~ret~18#1 then 1 else 0), 0); srcloc: null [2021-11-21 02:00:20,084 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume 1 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-21 02:00:20,084 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !(1 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-21 02:00:20,084 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11740: __copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-21 02:00:20,084 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11744: SUMMARY for call __copy_to_user_nocheck_#t~ret1086#1 := ldv__builtin_expect((if 0 != __copy_to_user_nocheck_~ret~18#1 then 1 else 0), 0); srcloc: null [2021-11-21 02:00:20,085 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11732: __copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-21 02:00:20,085 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11736: __copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-21 02:00:20,085 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11798: __copy_to_user_nocheck_~tmp___2~11#1 := __copy_to_user_nocheck_#t~ret1088#1;havoc __copy_to_user_nocheck_#t~ret1088#1;__copy_to_user_nocheck_#res#1 := (if __copy_to_user_nocheck_~tmp___2~11#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_nocheck_~tmp___2~11#1 % 18446744073709551616 % 4294967296 else __copy_to_user_nocheck_~tmp___2~11#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-21 02:00:20,085 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11786: assume -9223372036854775808 <= __copy_to_user_nocheck_#t~ret1087#1 && __copy_to_user_nocheck_#t~ret1087#1 <= 9223372036854775807;__copy_to_user_nocheck_~tmp___1~15#1 := __copy_to_user_nocheck_#t~ret1087#1;havoc __copy_to_user_nocheck_#t~ret1087#1; [2021-11-21 02:00:20,086 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11728: __copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-21 02:00:24,031 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11642: SUMMARY for call __copy_from_user_nocheck_#t~ret1083#1 := copy_user_generic(__copy_from_user_nocheck_~dst#1.base, __copy_from_user_nocheck_~dst#1.offset, __copy_from_user_nocheck_~src#1.base, __copy_from_user_nocheck_~src#1.offset, __copy_from_user_nocheck_~size#1); srcloc: null [2021-11-21 02:00:24,032 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11634: assume 10 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-21 02:00:24,032 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11634: assume !(10 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-21 02:00:24,032 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11638: assume 16 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-21 02:00:24,032 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11638: assume !(16 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-21 02:00:24,032 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11626: assume 4 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-21 02:00:24,032 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11626: assume !(4 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-21 02:00:24,033 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11630: assume 8 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-21 02:00:24,033 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11630: assume !(8 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-21 02:00:24,033 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11622: assume 2 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-21 02:00:24,033 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11622: assume !(2 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-21 02:00:24,033 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11668: assume -9223372036854775808 <= __copy_from_user_nocheck_#t~ret1081#1 && __copy_from_user_nocheck_#t~ret1081#1 <= 9223372036854775807;__copy_from_user_nocheck_~tmp___0~25#1 := __copy_from_user_nocheck_#t~ret1081#1;havoc __copy_from_user_nocheck_#t~ret1081#1; [2021-11-21 02:00:24,033 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11635: SUMMARY for call __copy_from_user_nocheck_#t~ret1081#1 := ldv__builtin_expect((if 0 != __copy_from_user_nocheck_~ret~17#1 then 1 else 0), 0); srcloc: null [2021-11-21 02:00:24,033 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11639: SUMMARY for call __copy_from_user_nocheck_#t~ret1082#1 := ldv__builtin_expect((if 0 != __copy_from_user_nocheck_~ret~17#1 then 1 else 0), 0); srcloc: null [2021-11-21 02:00:24,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11627: __copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-21 02:00:24,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11631: __copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-21 02:00:24,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11685: assume 0 != __copy_from_user_nocheck_~tmp___1~14#1;__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-21 02:00:24,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11685: assume !(0 != __copy_from_user_nocheck_~tmp___1~14#1);__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-21 02:00:24,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11619: __copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-21 02:00:24,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11623: __copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-21 02:00:24,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume 1 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-21 02:00:24,035 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !(1 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-21 02:00:24,035 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11670: assume 0 != __copy_from_user_nocheck_~tmp___0~25#1;__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-21 02:00:24,035 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11670: assume !(0 != __copy_from_user_nocheck_~tmp___0~25#1);__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-21 02:00:24,035 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11695: __copy_from_user_nocheck_~tmp___2~10#1 := __copy_from_user_nocheck_#t~ret1083#1;havoc __copy_from_user_nocheck_#t~ret1083#1;__copy_from_user_nocheck_#res#1 := (if __copy_from_user_nocheck_~tmp___2~10#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_nocheck_~tmp___2~10#1 % 18446744073709551616 % 4294967296 else __copy_from_user_nocheck_~tmp___2~10#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-21 02:00:24,035 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11683: assume -9223372036854775808 <= __copy_from_user_nocheck_#t~ret1082#1 && __copy_from_user_nocheck_#t~ret1082#1 <= 9223372036854775807;__copy_from_user_nocheck_~tmp___1~14#1 := __copy_from_user_nocheck_#t~ret1082#1;havoc __copy_from_user_nocheck_#t~ret1082#1; [2021-11-21 02:04:21,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 02:04:22,093 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 02:04:26,804 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 02:04:26,805 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-21 02:04:26,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:04:26 BoogieIcfgContainer [2021-11-21 02:04:26,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 02:04:26,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 02:04:26,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 02:04:26,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 02:04:26,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:00:06" (1/3) ... [2021-11-21 02:04:26,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584d6521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:04:26, skipping insertion in model container [2021-11-21 02:04:26,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:14" (2/3) ... [2021-11-21 02:04:26,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584d6521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:04:26, skipping insertion in model container [2021-11-21 02:04:26,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:04:26" (3/3) ... [2021-11-21 02:04:26,827 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i [2021-11-21 02:04:26,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 02:04:26,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-21 02:04:26,931 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 02:04:26,940 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 02:04:26,940 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-21 02:04:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 2300 states, 1495 states have (on average 1.3719063545150503) internal successors, (2051), 1516 states have internal predecessors, (2051), 650 states have call successors, (650), 152 states have call predecessors, (650), 151 states have return successors, (641), 635 states have call predecessors, (641), 641 states have call successors, (641) [2021-11-21 02:04:27,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-21 02:04:27,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:04:27,076 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 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] [2021-11-21 02:04:27,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, uvc_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:04:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:04:27,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1808094733, now seen corresponding path program 1 times [2021-11-21 02:04:27,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:04:27,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757327293] [2021-11-21 02:04:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:04:27,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:04:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:04:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3785 trivial. 0 not checked. [2021-11-21 02:04:29,017 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:04:29,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757327293] [2021-11-21 02:04:29,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757327293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:04:29,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:04:29,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:04:29,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239626952] [2021-11-21 02:04:29,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:04:29,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:04:29,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:04:29,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:04:29,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:04:29,089 INFO L87 Difference]: Start difference. First operand has 2300 states, 1495 states have (on average 1.3719063545150503) internal successors, (2051), 1516 states have internal predecessors, (2051), 650 states have call successors, (650), 152 states have call predecessors, (650), 151 states have return successors, (641), 635 states have call predecessors, (641), 641 states have call successors, (641) Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 02:04:31,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:34,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:37,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:04:42,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:49,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:04:50,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:04:50,251 INFO L93 Difference]: Finished difference Result 6603 states and 9619 transitions. [2021-11-21 02:04:50,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:04:50,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 339 [2021-11-21 02:04:50,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:04:50,328 INFO L225 Difference]: With dead ends: 6603 [2021-11-21 02:04:50,328 INFO L226 Difference]: Without dead ends: 4353 [2021-11-21 02:04:50,349 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 02:04:50,353 INFO L933 BasicCegarLoop]: 3482 mSDtfsCounter, 3036 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3038 SdHoareTripleChecker+Valid, 6221 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2021-11-21 02:04:50,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3038 Valid, 6221 Invalid, 1136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 1115 Invalid, 4 Unknown, 0 Unchecked, 20.6s Time] [2021-11-21 02:04:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2021-11-21 02:04:50,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 4343. [2021-11-21 02:04:50,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4343 states, 2844 states have (on average 1.3677918424753868) internal successors, (3890), 2883 states have internal predecessors, (3890), 1201 states have call successors, (1201), 295 states have call predecessors, (1201), 294 states have return successors, (1200), 1186 states have call predecessors, (1200), 1198 states have call successors, (1200) [2021-11-21 02:04:50,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4343 states to 4343 states and 6291 transitions. [2021-11-21 02:04:50,777 INFO L78 Accepts]: Start accepts. Automaton has 4343 states and 6291 transitions. Word has length 339 [2021-11-21 02:04:50,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:04:50,780 INFO L470 AbstractCegarLoop]: Abstraction has 4343 states and 6291 transitions. [2021-11-21 02:04:50,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 02:04:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4343 states and 6291 transitions. [2021-11-21 02:04:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-21 02:04:50,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:04:50,802 INFO L514 BasicCegarLoop]: trace histogram [33, 31, 31, 31, 31, 31, 31, 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] [2021-11-21 02:04:50,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 02:04:50,803 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, uvc_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:04:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:04:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1842801618, now seen corresponding path program 1 times [2021-11-21 02:04:50,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:04:50,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092565104] [2021-11-21 02:04:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:04:50,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:04:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:04:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3918 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3918 trivial. 0 not checked. [2021-11-21 02:04:51,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:04:51,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092565104] [2021-11-21 02:04:51,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092565104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:04:51,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:04:51,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:04:51,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679434893] [2021-11-21 02:04:51,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:04:51,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:04:51,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:04:51,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:04:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:04:51,822 INFO L87 Difference]: Start difference. First operand 4343 states and 6291 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 02:04:54,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:56,901 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:00,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:02,023 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:05,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:11,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:05:12,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:05:12,216 INFO L93 Difference]: Finished difference Result 10991 states and 15803 transitions. [2021-11-21 02:05:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:05:12,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 402 [2021-11-21 02:05:12,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:05:12,282 INFO L225 Difference]: With dead ends: 10991 [2021-11-21 02:05:12,282 INFO L226 Difference]: Without dead ends: 6711 [2021-11-21 02:05:12,303 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 02:05:12,305 INFO L933 BasicCegarLoop]: 3244 mSDtfsCounter, 1691 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 6000 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2021-11-21 02:05:12,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1691 Valid, 6000 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1105 Invalid, 3 Unknown, 0 Unchecked, 19.7s Time] [2021-11-21 02:05:12,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6711 states. [2021-11-21 02:05:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6711 to 6700. [2021-11-21 02:05:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 4329 states have (on average 1.3497343497343497) internal successors, (5843), 4385 states have internal predecessors, (5843), 1866 states have call successors, (1866), 502 states have call predecessors, (1866), 501 states have return successors, (1865), 1842 states have call predecessors, (1865), 1863 states have call successors, (1865) [2021-11-21 02:05:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9574 transitions. [2021-11-21 02:05:12,704 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9574 transitions. Word has length 402 [2021-11-21 02:05:12,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:05:12,706 INFO L470 AbstractCegarLoop]: Abstraction has 6700 states and 9574 transitions. [2021-11-21 02:05:12,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 02:05:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9574 transitions. [2021-11-21 02:05:12,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-11-21 02:05:12,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:05:12,733 INFO L514 BasicCegarLoop]: trace histogram [34, 31, 31, 31, 31, 31, 31, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:05:12,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 02:05:12,734 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, uvc_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:05:12,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:05:12,735 INFO L85 PathProgramCache]: Analyzing trace with hash -424521088, now seen corresponding path program 1 times [2021-11-21 02:05:12,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:05:12,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108104962] [2021-11-21 02:05:12,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:12,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:05:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:05:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4011 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4002 trivial. 0 not checked. [2021-11-21 02:05:13,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:05:13,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108104962] [2021-11-21 02:05:13,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108104962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:05:13,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:05:13,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:05:13,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476349098] [2021-11-21 02:05:13,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:05:13,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:05:13,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:05:13,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:05:13,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:05:13,611 INFO L87 Difference]: Start difference. First operand 6700 states and 9574 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, (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 02:05:15,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:19,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:05:21,945 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:25,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:28,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:05:28,939 INFO L93 Difference]: Finished difference Result 12548 states and 17829 transitions. [2021-11-21 02:05:28,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:05:28,940 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, (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 422 [2021-11-21 02:05:28,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:05:28,994 INFO L225 Difference]: With dead ends: 12548 [2021-11-21 02:05:28,994 INFO L226 Difference]: Without dead ends: 5911 [2021-11-21 02:05:29,025 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 02:05:29,027 INFO L933 BasicCegarLoop]: 3181 mSDtfsCounter, 1692 mSDsluCounter, 3288 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 5953 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2021-11-21 02:05:29,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 5953 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1065 Invalid, 3 Unknown, 0 Unchecked, 15.0s Time] [2021-11-21 02:05:29,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2021-11-21 02:05:29,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 5904. [2021-11-21 02:05:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5904 states, 3761 states have (on average 1.3336878489763362) internal successors, (5016), 3808 states have internal predecessors, (5016), 1663 states have call successors, (1663), 478 states have call predecessors, (1663), 476 states have return successors, (1660), 1641 states have call predecessors, (1660), 1660 states have call successors, (1660) [2021-11-21 02:05:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5904 states to 5904 states and 8339 transitions. [2021-11-21 02:05:29,372 INFO L78 Accepts]: Start accepts. Automaton has 5904 states and 8339 transitions. Word has length 422 [2021-11-21 02:05:29,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:05:29,374 INFO L470 AbstractCegarLoop]: Abstraction has 5904 states and 8339 transitions. [2021-11-21 02:05:29,374 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, (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 02:05:29,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5904 states and 8339 transitions. [2021-11-21 02:05:29,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-11-21 02:05:29,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:05:29,394 INFO L514 BasicCegarLoop]: trace histogram [36, 32, 32, 32, 32, 32, 32, 5, 5, 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] [2021-11-21 02:05:29,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 02:05:29,395 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, uvc_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:05:29,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:05:29,396 INFO L85 PathProgramCache]: Analyzing trace with hash -10642394, now seen corresponding path program 1 times [2021-11-21 02:05:29,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:05:29,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80553733] [2021-11-21 02:05:29,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:29,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:05:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:05:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4270 trivial. 0 not checked. [2021-11-21 02:05:30,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:05:30,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80553733] [2021-11-21 02:05:30,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80553733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:05:30,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:05:30,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 02:05:30,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146014940] [2021-11-21 02:05:30,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:05:30,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 02:05:30,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:05:30,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 02:05:30,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 02:05:30,493 INFO L87 Difference]: Start difference. First operand 5904 states and 8339 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-21 02:05:32,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:35,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:38,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:40,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:43,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:05:51,190 INFO L93 Difference]: Finished difference Result 9949 states and 13986 transitions. [2021-11-21 02:05:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 02:05:51,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 412 [2021-11-21 02:05:51,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:05:51,280 INFO L225 Difference]: With dead ends: 9949 [2021-11-21 02:05:51,281 INFO L226 Difference]: Without dead ends: 9901 [2021-11-21 02:05:51,293 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 02:05:51,294 INFO L933 BasicCegarLoop]: 3223 mSDtfsCounter, 2154 mSDsluCounter, 6948 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 9130 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2021-11-21 02:05:51,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2154 Valid, 9130 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1581 Invalid, 2 Unknown, 0 Unchecked, 20.3s Time] [2021-11-21 02:05:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9901 states. [2021-11-21 02:05:51,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9901 to 9894. [2021-11-21 02:05:51,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9894 states, 6264 states have (on average 1.3271072796934866) internal successors, (8313), 6335 states have internal predecessors, (8313), 2799 states have call successors, (2799), 829 states have call predecessors, (2799), 827 states have return successors, (2796), 2770 states have call predecessors, (2796), 2796 states have call successors, (2796) [2021-11-21 02:05:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9894 states to 9894 states and 13908 transitions. [2021-11-21 02:05:51,874 INFO L78 Accepts]: Start accepts. Automaton has 9894 states and 13908 transitions. Word has length 412 [2021-11-21 02:05:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:05:51,877 INFO L470 AbstractCegarLoop]: Abstraction has 9894 states and 13908 transitions. [2021-11-21 02:05:51,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-21 02:05:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 9894 states and 13908 transitions. [2021-11-21 02:05:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-11-21 02:05:51,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:05:51,918 INFO L514 BasicCegarLoop]: trace histogram [38, 32, 32, 32, 32, 32, 32, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:05:51,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 02:05:51,919 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, uvc_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:05:51,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:05:51,921 INFO L85 PathProgramCache]: Analyzing trace with hash -186816830, now seen corresponding path program 1 times [2021-11-21 02:05:51,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:05:51,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156540801] [2021-11-21 02:05:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:51,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:05:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:05:53,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4589 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4589 trivial. 0 not checked. [2021-11-21 02:05:53,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:05:53,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156540801] [2021-11-21 02:05:53,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156540801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:05:53,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:05:53,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 02:05:53,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795641789] [2021-11-21 02:05:53,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:05:53,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 02:05:53,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:05:53,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 02:05:53,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 02:05:53,021 INFO L87 Difference]: Start difference. First operand 9894 states and 13908 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-21 02:05:55,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:02,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:07,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:06:16,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:06:19,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:06:19,868 INFO L93 Difference]: Finished difference Result 13488 states and 19714 transitions. [2021-11-21 02:06:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 02:06:19,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 501 [2021-11-21 02:06:19,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:06:19,957 INFO L225 Difference]: With dead ends: 13488 [2021-11-21 02:06:19,957 INFO L226 Difference]: Without dead ends: 13486 [2021-11-21 02:06:19,965 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 02:06:19,967 INFO L933 BasicCegarLoop]: 4781 mSDtfsCounter, 3762 mSDsluCounter, 8812 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 207 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4091 SdHoareTripleChecker+Valid, 12322 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2021-11-21 02:06:19,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4091 Valid, 12322 Invalid, 2530 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [207 Valid, 2320 Invalid, 3 Unknown, 0 Unchecked, 26.1s Time] [2021-11-21 02:06:19,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13486 states. [2021-11-21 02:06:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13486 to 9894. [2021-11-21 02:06:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9894 states, 6264 states have (on average 1.326947637292465) internal successors, (8312), 6335 states have internal predecessors, (8312), 2799 states have call successors, (2799), 829 states have call predecessors, (2799), 827 states have return successors, (2796), 2770 states have call predecessors, (2796), 2796 states have call successors, (2796) [2021-11-21 02:06:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9894 states to 9894 states and 13907 transitions. [2021-11-21 02:06:20,905 INFO L78 Accepts]: Start accepts. Automaton has 9894 states and 13907 transitions. Word has length 501 [2021-11-21 02:06:20,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:06:20,906 INFO L470 AbstractCegarLoop]: Abstraction has 9894 states and 13907 transitions. [2021-11-21 02:06:20,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-21 02:06:20,907 INFO L276 IsEmpty]: Start isEmpty. Operand 9894 states and 13907 transitions. [2021-11-21 02:06:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2021-11-21 02:06:20,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:06:20,954 INFO L514 BasicCegarLoop]: trace histogram [37, 32, 32, 32, 32, 32, 32, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:20,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 02:06:20,954 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION === [uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, uvc_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:06:20,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:06:20,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1348092818, now seen corresponding path program 1 times [2021-11-21 02:06:20,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:06:20,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964329539] [2021-11-21 02:06:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:06:20,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:06:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:06:21,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4374 trivial. 0 not checked. [2021-11-21 02:06:21,782 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:06:21,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964329539] [2021-11-21 02:06:21,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964329539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:06:21,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:06:21,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:06:21,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625557894] [2021-11-21 02:06:21,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:06:21,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:06:21,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:06:21,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:06:21,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:06:21,785 INFO L87 Difference]: Start difference. First operand 9894 states and 13907 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-21 02:06:24,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:30,457 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:33,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:37,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:40,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:06:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:06:40,255 INFO L93 Difference]: Finished difference Result 21543 states and 30299 transitions. [2021-11-21 02:06:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:06:40,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 482 [2021-11-21 02:06:40,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:06:40,328 INFO L225 Difference]: With dead ends: 21543 [2021-11-21 02:06:40,328 INFO L226 Difference]: Without dead ends: 12824 [2021-11-21 02:06:40,375 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 02:06:40,376 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 2826 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2826 SdHoareTripleChecker+Valid, 6857 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-11-21 02:06:40,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2826 Valid, 6857 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1318 Invalid, 3 Unknown, 0 Unchecked, 18.1s Time] [2021-11-21 02:06:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12824 states. [2021-11-21 02:06:40,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12824 to 12806. [2021-11-21 02:06:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12806 states, 8119 states have (on average 1.3289814016504495) internal successors, (10790), 8214 states have internal predecessors, (10790), 3605 states have call successors, (3605), 1080 states have call predecessors, (3605), 1078 states have return successors, (3602), 3565 states have call predecessors, (3602), 3602 states have call successors, (3602) [2021-11-21 02:06:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12806 states to 12806 states and 17997 transitions. [2021-11-21 02:06:41,083 INFO L78 Accepts]: Start accepts. Automaton has 12806 states and 17997 transitions. Word has length 482 [2021-11-21 02:06:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:06:41,085 INFO L470 AbstractCegarLoop]: Abstraction has 12806 states and 17997 transitions. [2021-11-21 02:06:41,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-21 02:06:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 12806 states and 17997 transitions. [2021-11-21 02:06:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2021-11-21 02:06:41,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:06:41,129 INFO L514 BasicCegarLoop]: trace histogram [39, 33, 33, 33, 33, 33, 33, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 02:06:41,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 02:06:41,129 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION === [uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, uvc_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:06:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:06:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1521143433, now seen corresponding path program 1 times [2021-11-21 02:06:41,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:06:41,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494139426] [2021-11-21 02:06:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:06:41,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:06:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:06:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4865 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4865 trivial. 0 not checked. [2021-11-21 02:06:42,006 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:06:42,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494139426] [2021-11-21 02:06:42,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494139426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:06:42,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:06:42,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 02:06:42,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395311050] [2021-11-21 02:06:42,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:06:42,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 02:06:42,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:06:42,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 02:06:42,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 02:06:42,010 INFO L87 Difference]: Start difference. First operand 12806 states and 17997 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-21 02:06:44,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:47,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:06:52,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:55,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:59,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:07:06,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:07:07,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:07:07,403 INFO L93 Difference]: Finished difference Result 23556 states and 34097 transitions. [2021-11-21 02:07:07,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 02:07:07,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 558 [2021-11-21 02:07:07,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:07:07,510 INFO L225 Difference]: With dead ends: 23556 [2021-11-21 02:07:07,510 INFO L226 Difference]: Without dead ends: 17139 [2021-11-21 02:07:07,549 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 02:07:07,550 INFO L933 BasicCegarLoop]: 3987 mSDtfsCounter, 2100 mSDsluCounter, 7832 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 502 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 10634 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2021-11-21 02:07:07,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2310 Valid, 10634 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 1899 Invalid, 4 Unknown, 0 Unchecked, 24.7s Time] [2021-11-21 02:07:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17139 states. [2021-11-21 02:07:08,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17139 to 12808. [2021-11-21 02:07:08,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12808 states, 8121 states have (on average 1.3289003817263885) internal successors, (10792), 8216 states have internal predecessors, (10792), 3605 states have call successors, (3605), 1080 states have call predecessors, (3605), 1078 states have return successors, (3602), 3565 states have call predecessors, (3602), 3602 states have call successors, (3602) [2021-11-21 02:07:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12808 states to 12808 states and 17999 transitions. [2021-11-21 02:07:08,589 INFO L78 Accepts]: Start accepts. Automaton has 12808 states and 17999 transitions. Word has length 558 [2021-11-21 02:07:08,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:07:08,591 INFO L470 AbstractCegarLoop]: Abstraction has 12808 states and 17999 transitions. [2021-11-21 02:07:08,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-21 02:07:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand 12808 states and 17999 transitions. [2021-11-21 02:07:08,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2021-11-21 02:07:08,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:07:08,638 INFO L514 BasicCegarLoop]: trace histogram [39, 33, 33, 33, 33, 33, 33, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 02:07:08,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 02:07:08,638 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION === [uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, uvc_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:07:08,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:07:08,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1795504855, now seen corresponding path program 1 times [2021-11-21 02:07:08,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:07:08,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77991793] [2021-11-21 02:07:08,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:07:08,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:07:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:07:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4865 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4865 trivial. 0 not checked. [2021-11-21 02:07:10,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:07:10,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77991793] [2021-11-21 02:07:10,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77991793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:07:10,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:07:10,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 02:07:10,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147411117] [2021-11-21 02:07:10,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:07:10,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 02:07:10,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:07:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 02:07:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 02:07:10,029 INFO L87 Difference]: Start difference. First operand 12808 states and 17999 transitions. Second operand has 8 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 2 states have call successors, (66), 2 states have call predecessors, (66), 3 states have return successors, (64), 4 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-21 02:07:12,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:17,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:07:18,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:24,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:27,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:28,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:33,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:42,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:07:50,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:07:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:07:51,349 INFO L93 Difference]: Finished difference Result 23354 states and 33738 transitions. [2021-11-21 02:07:51,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 02:07:51,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 2 states have call successors, (66), 2 states have call predecessors, (66), 3 states have return successors, (64), 4 states have call predecessors, (64), 2 states have call successors, (64) Word has length 564 [2021-11-21 02:07:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:07:51,443 INFO L225 Difference]: With dead ends: 23354 [2021-11-21 02:07:51,444 INFO L226 Difference]: Without dead ends: 16923 [2021-11-21 02:07:51,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-21 02:07:51,477 INFO L933 BasicCegarLoop]: 3518 mSDtfsCounter, 529 mSDsluCounter, 24308 mSDsCounter, 0 mSdLazyCounter, 4457 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 24065 SdHoareTripleChecker+Invalid, 4461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4457 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.5s IncrementalHoareTripleChecker+Time [2021-11-21 02:07:51,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 24065 Invalid, 4461 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 4457 Invalid, 4 Unknown, 0 Unchecked, 40.5s Time] [2021-11-21 02:07:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16923 states. [2021-11-21 02:07:52,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16923 to 12820. [2021-11-21 02:07:52,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12820 states, 8129 states have (on average 1.3285767007011933) internal successors, (10800), 8224 states have internal predecessors, (10800), 3605 states have call successors, (3605), 1080 states have call predecessors, (3605), 1082 states have return successors, (3616), 3569 states have call predecessors, (3616), 3602 states have call successors, (3616) [2021-11-21 02:07:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12820 states to 12820 states and 18021 transitions. [2021-11-21 02:07:52,575 INFO L78 Accepts]: Start accepts. Automaton has 12820 states and 18021 transitions. Word has length 564 [2021-11-21 02:07:52,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:07:52,577 INFO L470 AbstractCegarLoop]: Abstraction has 12820 states and 18021 transitions. [2021-11-21 02:07:52,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 2 states have call successors, (66), 2 states have call predecessors, (66), 3 states have return successors, (64), 4 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-21 02:07:52,577 INFO L276 IsEmpty]: Start isEmpty. Operand 12820 states and 18021 transitions. [2021-11-21 02:07:52,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2021-11-21 02:07:52,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:07:52,630 INFO L514 BasicCegarLoop]: trace histogram [39, 33, 33, 33, 33, 33, 33, 13, 13, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 02:07:52,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 02:07:52,631 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION === [uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, uvc_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:07:52,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:07:52,632 INFO L85 PathProgramCache]: Analyzing trace with hash -384399921, now seen corresponding path program 1 times [2021-11-21 02:07:52,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:07:52,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528395133] [2021-11-21 02:07:52,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:07:52,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:07:53,009 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 02:07:53,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763474774] [2021-11-21 02:07:53,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:07:53,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:07:53,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:07:53,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:07:53,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 02:07:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:07:56,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 12713 conjuncts, 238 conjunts are in the unsatisfiable core [2021-11-21 02:07:56,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:08:00,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 02:08:00,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-11-21 02:08:01,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 02:08:01,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2021-11-21 02:08:03,018 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-11-21 02:08:03,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 60 [2021-11-21 02:08:03,055 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-21 02:08:03,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 32 [2021-11-21 02:08:03,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:08:03,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:08:03,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:08:03,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2021-11-21 02:08:03,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:08:03,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 02:08:04,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2021-11-21 02:08:04,605 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-21 02:08:04,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 02:08:04,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:08:04,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 32 [2021-11-21 02:08:04,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2021-11-21 02:08:04,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-21 02:08:04,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 02:08:05,186 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-21 02:08:05,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-11-21 02:08:05,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:08:05,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 32 [2021-11-21 02:08:06,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 44 [2021-11-21 02:08:06,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2021-11-21 02:08:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4940 backedges. 72 proven. 288 refuted. 0 times theorem prover too weak. 4580 trivial. 0 not checked. [2021-11-21 02:08:07,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:08:08,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-11-21 02:08:09,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-21 02:08:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4940 trivial. 0 not checked. [2021-11-21 02:08:14,068 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:08:14,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528395133] [2021-11-21 02:08:14,069 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 02:08:14,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763474774] [2021-11-21 02:08:14,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763474774] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 02:08:14,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 02:08:14,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [21] total 34 [2021-11-21 02:08:14,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100874990] [2021-11-21 02:08:14,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:08:14,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 02:08:14,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:08:14,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 02:08:14,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 02:08:14,074 INFO L87 Difference]: Start difference. First operand 12820 states and 18021 transitions. Second operand has 15 states, 14 states have (on average 10.928571428571429) internal successors, (153), 11 states have internal predecessors, (153), 5 states have call successors, (70), 5 states have call predecessors, (70), 3 states have return successors, (68), 6 states have call predecessors, (68), 5 states have call successors, (68) [2021-11-21 02:08:16,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:37,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:08:39,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:08:41,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:09:16,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:22,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:24,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:42,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:48,661 WARN L515 Checker$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 02:10:19,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:10:56,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:00,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:06,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:13,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:11:13,556 INFO L93 Difference]: Finished difference Result 19187 states and 27156 transitions. [2021-11-21 02:11:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 02:11:13,558 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.928571428571429) internal successors, (153), 11 states have internal predecessors, (153), 5 states have call successors, (70), 5 states have call predecessors, (70), 3 states have return successors, (68), 6 states have call predecessors, (68), 5 states have call successors, (68) Word has length 581 [2021-11-21 02:11:13,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:11:13,685 INFO L225 Difference]: With dead ends: 19187 [2021-11-21 02:11:13,686 INFO L226 Difference]: Without dead ends: 19185 [2021-11-21 02:11:13,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1121 SyntacticMatches, 9 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=239, Invalid=2017, Unknown=0, NotChecked=0, Total=2256 [2021-11-21 02:11:13,698 INFO L933 BasicCegarLoop]: 3011 mSDtfsCounter, 4018 mSDsluCounter, 19714 mSDsCounter, 0 mSdLazyCounter, 25295 mSolverCounterSat, 3404 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4295 SdHoareTripleChecker+Valid, 19528 SdHoareTripleChecker+Invalid, 30374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3404 IncrementalHoareTripleChecker+Valid, 25295 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 1667 IncrementalHoareTripleChecker+Unchecked, 174.9s IncrementalHoareTripleChecker+Time [2021-11-21 02:11:13,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4295 Valid, 19528 Invalid, 30374 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3404 Valid, 25295 Invalid, 8 Unknown, 1667 Unchecked, 174.9s Time] [2021-11-21 02:11:13,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19185 states. [2021-11-21 02:11:15,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19185 to 18378. [2021-11-21 02:11:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18378 states, 11609 states have (on average 1.3264708415884228) internal successors, (15399), 11756 states have internal predecessors, (15399), 5203 states have call successors, (5203), 1554 states have call predecessors, (5203), 1562 states have return successors, (5231), 5148 states have call predecessors, (5231), 5200 states have call successors, (5231) [2021-11-21 02:11:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18378 states to 18378 states and 25833 transitions. [2021-11-21 02:11:15,257 INFO L78 Accepts]: Start accepts. Automaton has 18378 states and 25833 transitions. Word has length 581 [2021-11-21 02:11:15,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:11:15,259 INFO L470 AbstractCegarLoop]: Abstraction has 18378 states and 25833 transitions. [2021-11-21 02:11:15,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.928571428571429) internal successors, (153), 11 states have internal predecessors, (153), 5 states have call successors, (70), 5 states have call predecessors, (70), 3 states have return successors, (68), 6 states have call predecessors, (68), 5 states have call successors, (68) [2021-11-21 02:11:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 18378 states and 25833 transitions. [2021-11-21 02:11:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2021-11-21 02:11:15,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:11:15,294 INFO L514 BasicCegarLoop]: trace histogram [39, 33, 33, 33, 33, 33, 33, 13, 13, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 02:11:15,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 02:11:15,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:11:15,508 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uvc_deleteErr0ASSERT_VIOLATIONERROR_FUNCTION, uvc_deleteErr1ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 02:11:15,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:11:15,509 INFO L85 PathProgramCache]: Analyzing trace with hash -856385677, now seen corresponding path program 1 times [2021-11-21 02:11:15,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:11:15,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823952693] [2021-11-21 02:11:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:11:15,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:11:15,898 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 02:11:15,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097087599] [2021-11-21 02:11:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:11:15,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:11:15,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:11:15,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:11:15,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490140a9-eabd-4bae-b943-460a50bef88d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 02:11:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:11:19,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 12682 conjuncts, 121 conjunts are in the unsatisfiable core [2021-11-21 02:11:19,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:11:20,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 02:11:22,603 WARN L860 $PredicateComparison]: unable to prove that (exists ((atomic_set_~i Int) (atomic_set_~v.offset Int)) (and (<= atomic_set_~v.offset |c_atomic_set_#in~v.offset|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_atomic_set_#in~v.base| (store (select |c_old(#memory_int)| |c_atomic_set_#in~v.base|) atomic_set_~v.offset atomic_set_~i))))) is different from true [2021-11-21 02:11:22,647 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-21 02:11:22,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-11-21 02:11:22,778 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 02:11:22,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 02:11:22,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 139 [2021-11-21 02:11:22,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 211 [2021-11-21 02:11:29,790 WARN L227 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 404 DAG size of output: 172 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 02:11:29,791 INFO L354 Elim1Store]: treesize reduction 3169, result has 22.5 percent of original size [2021-11-21 02:11:29,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 416 treesize of output 1172