./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/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_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V --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-aef121e [2021-11-23 02:25:43,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:25:43,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:25:43,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:25:43,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:25:43,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:25:43,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:25:43,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:25:43,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:25:43,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:25:43,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:25:43,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:25:43,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:25:43,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:25:43,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:25:43,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:25:43,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:25:43,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:25:43,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:25:43,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:25:43,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:25:43,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:25:43,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:25:43,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:25:43,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:25:43,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:25:43,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:25:43,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:25:43,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:25:43,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:25:43,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:25:43,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:25:43,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:25:43,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:25:43,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:25:43,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:25:43,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:25:43,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:25:43,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:25:43,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:25:43,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:25:43,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:25:43,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:25:43,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:25:43,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:25:43,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:25:43,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:25:43,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:25:43,968 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:25:43,968 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:25:43,968 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:25:43,968 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:25:43,970 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:25:43,970 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:25:43,970 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:25:43,970 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:25:43,971 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:25:43,971 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:25:43,971 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:25:43,971 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:25:43,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:25:43,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:25:43,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:25:43,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:25:43,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:25:43,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:25:43,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:25:43,983 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:25:43,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:25:43,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:25:43,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:25:43,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:43,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:25:43,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:25:43,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:25:43,985 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:25:43,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:25:43,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:25:43,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:25:43,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:25:43,987 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_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a521111bd175d3310336dcb5a96ef10ad6928036ed2148cdf12f5390a99f6bb7 [2021-11-23 02:25:44,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:25:44,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:25:44,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:25:44,270 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:25:44,271 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:25:44,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i [2021-11-23 02:25:44,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/data/c1da763d8/0291c1f34c4c4d2c81e700657f1df347/FLAG7ecede059 [2021-11-23 02:25:45,442 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:25:45,443 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i [2021-11-23 02:25:45,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/data/c1da763d8/0291c1f34c4c4d2c81e700657f1df347/FLAG7ecede059 [2021-11-23 02:25:45,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/data/c1da763d8/0291c1f34c4c4d2c81e700657f1df347 [2021-11-23 02:25:45,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:25:45,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:25:45,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:45,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:25:45,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:25:45,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:45" (1/1) ... [2021-11-23 02:25:45,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0e0b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:45, skipping insertion in model container [2021-11-23 02:25:45,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:45" (1/1) ... [2021-11-23 02:25:45,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:25:45,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:25:51,168 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_db770dcc-ece2-44ab-a660-87f6f18b85a7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599511,599524] [2021-11-23 02:25:51,171 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_db770dcc-ece2-44ab-a660-87f6f18b85a7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599658,599671] [2021-11-23 02:25:51,172 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_db770dcc-ece2-44ab-a660-87f6f18b85a7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599797,599810] [2021-11-23 02:25:51,173 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_db770dcc-ece2-44ab-a660-87f6f18b85a7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599955,599968] [2021-11-23 02:25:51,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:51,358 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:25:52,391 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_db770dcc-ece2-44ab-a660-87f6f18b85a7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599511,599524] [2021-11-23 02:25:52,391 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_db770dcc-ece2-44ab-a660-87f6f18b85a7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599658,599671] [2021-11-23 02:25:52,392 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_db770dcc-ece2-44ab-a660-87f6f18b85a7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599797,599810] [2021-11-23 02:25:52,393 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_db770dcc-ece2-44ab-a660-87f6f18b85a7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599955,599968] [2021-11-23 02:25:52,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:52,734 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:25:52,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:52 WrapperNode [2021-11-23 02:25:52,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:52,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:52,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:25:52,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:25:52,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:52" (1/1) ... [2021-11-23 02:25:52,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:52" (1/1) ... [2021-11-23 02:25:53,372 INFO L137 Inliner]: procedures = 547, calls = 8792, calls flagged for inlining = 309, calls inlined = 249, statements flattened = 13527 [2021-11-23 02:25:53,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:53,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:25:53,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:25:53,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:25:53,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:52" (1/1) ... [2021-11-23 02:25:53,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:52" (1/1) ... [2021-11-23 02:25:53,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:52" (1/1) ... [2021-11-23 02:25:53,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:52" (1/1) ... [2021-11-23 02:25:53,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:52" (1/1) ... [2021-11-23 02:25:54,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:52" (1/1) ... [2021-11-23 02:25:54,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:52" (1/1) ... [2021-11-23 02:25:54,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:25:54,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:25:54,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:25:54,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:25:54,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:52" (1/1) ... [2021-11-23 02:25:54,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:54,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:54,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:25:54,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:25:54,489 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 02:25:54,489 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 02:25:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-23 02:25:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-23 02:25:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:25:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:25:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:25:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:25:54,491 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_v4l2_read [2021-11-23 02:25:54,491 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_v4l2_read [2021-11-23 02:25:54,491 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_v4l2_release [2021-11-23 02:25:54,491 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_v4l2_release [2021-11-23 02:25:54,491 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_find_control [2021-11-23 02:25:54,491 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_find_control [2021-11-23 02:25:54,492 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2021-11-23 02:25:54,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2021-11-23 02:25:54,492 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_ctrl_add_mapping [2021-11-23 02:25:54,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_ctrl_add_mapping [2021-11-23 02:25:54,492 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_buffer_finish [2021-11-23 02:25:54,492 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_buffer_finish [2021-11-23 02:25:54,493 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-11-23 02:25:54,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-11-23 02:25:54,493 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-23 02:25:54,493 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_wait_prepare [2021-11-23 02:25:54,493 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_wait_prepare [2021-11-23 02:25:54,493 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_alloc_urb_buffers [2021-11-23 02:25:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_alloc_urb_buffers [2021-11-23 02:25:54,494 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_video_clock_reset [2021-11-23 02:25:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_video_clock_reset [2021-11-23 02:25:54,494 INFO L130 BoogieDeclarations]: Found specification of procedure usb_match_one_id [2021-11-23 02:25:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_match_one_id [2021-11-23 02:25:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:25:54,511 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:25:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:25:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get_ts [2021-11-23 02:25:54,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get_ts [2021-11-23 02:25:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_entity_by_id [2021-11-23 02:25:54,512 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_entity_by_id [2021-11-23 02:25:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:25:54,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:25:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-23 02:25:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-23 02:25:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 02:25:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 02:25:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:25:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:25:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:25:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:25:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-11-23 02:25:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-11-23 02:25:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:25:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure __chk_range_not_ok [2021-11-23 02:25:54,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __chk_range_not_ok [2021-11-23 02:25:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_query_v4l2_ctrl [2021-11-23 02:25:54,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_query_v4l2_ctrl [2021-11-23 02:25:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_data [2021-11-23 02:25:54,517 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_data [2021-11-23 02:25:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 02:25:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 02:25:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-11-23 02:25:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-11-23 02:25:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_v4l2_ioctl [2021-11-23 02:25:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_v4l2_ioctl [2021-11-23 02:25:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:25:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:25:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_populate_cache [2021-11-23 02:25:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_populate_cache [2021-11-23 02:25:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:25:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_add_info [2021-11-23 02:25:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_add_info [2021-11-23 02:25:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 02:25:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 02:25:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_buffer_done [2021-11-23 02:25:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_buffer_done [2021-11-23 02:25:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:25:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_query_ctrl [2021-11-23 02:25:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_query_ctrl [2021-11-23 02:25:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:25:54,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:25:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_wait_finish [2021-11-23 02:25:54,523 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_wait_finish [2021-11-23 02:25:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_reset_resume [2021-11-23 02:25:54,523 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_reset_resume [2021-11-23 02:25:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2021-11-23 02:25:54,524 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2021-11-23 02:25:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:25:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user [2021-11-23 02:25:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user [2021-11-23 02:25:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:25:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:25:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 02:25:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 02:25:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-23 02:25:54,527 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-23 02:25:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:25:54,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:25:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_scan_chain_forward [2021-11-23 02:25:54,527 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_scan_chain_forward [2021-11-23 02:25:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2021-11-23 02:25:54,528 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2021-11-23 02:25:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_commit_video [2021-11-23 02:25:54,528 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_commit_video [2021-11-23 02:25:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-23 02:25:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 02:25:54,529 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 02:25:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2021-11-23 02:25:54,532 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2021-11-23 02:25:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:25:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-23 02:25:54,533 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-23 02:25:54,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 02:25:54,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 02:25:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 02:25:54,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 02:25:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_ctrl_get [2021-11-23 02:25:54,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_ctrl_get [2021-11-23 02:25:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:25:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_find_endpoint [2021-11-23 02:25:54,541 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_find_endpoint [2021-11-23 02:25:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:25:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:25:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:25:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:25:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_endpoint_max_bpi [2021-11-23 02:25:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_endpoint_max_bpi [2021-11-23 02:25:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:25:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:25:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_set_video_ctrl [2021-11-23 02:25:54,543 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_set_video_ctrl [2021-11-23 02:25:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-23 02:25:54,543 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-23 02:25:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_delete [2021-11-23 02:25:54,543 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_delete [2021-11-23 02:25:54,544 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_commit_entity [2021-11-23 02:25:54,544 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_commit_entity [2021-11-23 02:25:54,544 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_free_urb_buffers [2021-11-23 02:25:54,544 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_free_urb_buffers [2021-11-23 02:25:54,544 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_del_event [2021-11-23 02:25:54,544 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_del_event [2021-11-23 02:25:54,544 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2021-11-23 02:25:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2021-11-23 02:25:54,545 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_v4l2_open [2021-11-23 02:25:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_v4l2_open [2021-11-23 02:25:54,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:25:54,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:25:54,559 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-23 02:25:54,559 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-23 02:25:54,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:25:54,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:25:54,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:25:54,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:25:54,560 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2021-11-23 02:25:54,560 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2021-11-23 02:25:54,560 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_fill_event [2021-11-23 02:25:54,560 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_fill_event [2021-11-23 02:25:54,560 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-11-23 02:25:54,560 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-11-23 02:25:54,561 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_plane_payload [2021-11-23 02:25:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_plane_payload [2021-11-23 02:25:54,561 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2021-11-23 02:25:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2021-11-23 02:25:54,561 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-23 02:25:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-23 02:25:54,561 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-23 02:25:54,562 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-23 02:25:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-23 02:25:54,562 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-23 02:25:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_debugfs_cleanup [2021-11-23 02:25:54,562 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_debugfs_cleanup [2021-11-23 02:25:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-11-23 02:25:54,563 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-11-23 02:25:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:25:54,563 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:25:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_queue_fh [2021-11-23 02:25:54,563 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_queue_fh [2021-11-23 02:25:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_init_video [2021-11-23 02:25:54,563 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_init_video [2021-11-23 02:25:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_status_start [2021-11-23 02:25:54,564 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_status_start [2021-11-23 02:25:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:25:54,565 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:25:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_intf [2021-11-23 02:25:54,566 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_intf [2021-11-23 02:25:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2021-11-23 02:25:54,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2021-11-23 02:25:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2021-11-23 02:25:54,566 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2021-11-23 02:25:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_find_control [2021-11-23 02:25:54,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_find_control [2021-11-23 02:25:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_video_clock_cleanup [2021-11-23 02:25:54,567 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_video_clock_cleanup [2021-11-23 02:25:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-23 02:25:54,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-23 02:25:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-23 02:25:54,568 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-23 02:25:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2021-11-23 02:25:54,568 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2021-11-23 02:25:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_buffer_prepare [2021-11-23 02:25:54,568 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_buffer_prepare [2021-11-23 02:25:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 02:25:54,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 02:25:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_set_zoom [2021-11-23 02:25:54,569 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_set_zoom [2021-11-23 02:25:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_test_bit [2021-11-23 02:25:54,569 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_test_bit [2021-11-23 02:25:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:25:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:25:54,570 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:25:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure copy_in_user [2021-11-23 02:25:54,570 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_in_user [2021-11-23 02:25:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:25:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_uvc_cleanup_10_2 [2021-11-23 02:25:54,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_uvc_cleanup_10_2 [2021-11-23 02:25:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_status_stop [2021-11-23 02:25:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_status_stop [2021-11-23 02:25:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_alloc_entity [2021-11-23 02:25:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_alloc_entity [2021-11-23 02:25:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2021-11-23 02:25:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2021-11-23 02:25:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_query_ctrl [2021-11-23 02:25:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_query_ctrl [2021-11-23 02:25:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:25:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-23 02:25:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-23 02:25:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-23 02:25:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-23 02:25:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:25:54,573 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:25:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 02:25:54,573 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 02:25:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_dismiss_privileges [2021-11-23 02:25:54,573 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_dismiss_privileges [2021-11-23 02:25:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 02:25:54,578 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 02:25:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-23 02:25:54,578 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-23 02:25:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~__u8~0~X~$Pointer$~TO~~__s32~0 [2021-11-23 02:25:54,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~__u8~0~X~$Pointer$~TO~~__s32~0 [2021-11-23 02:25:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:25:54,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:25:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_video_clock_host_sof [2021-11-23 02:25:54,579 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_video_clock_host_sof [2021-11-23 02:25:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-23 02:25:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-23 02:25:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:25:54,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:25:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:25:54,581 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:25:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure compat_alloc_user_space [2021-11-23 02:25:54,581 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_alloc_user_space [2021-11-23 02:25:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_plane_size [2021-11-23 02:25:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_plane_size [2021-11-23 02:25:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2021-11-23 02:25:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2021-11-23 02:25:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_print_terms [2021-11-23 02:25:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_print_terms [2021-11-23 02:25:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-23 02:25:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-23 02:25:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_has_privileges [2021-11-23 02:25:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_has_privileges [2021-11-23 02:25:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_video_enable [2021-11-23 02:25:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_video_enable [2021-11-23 02:25:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:25:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:25:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:25:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:25:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:25:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-23 02:25:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-23 02:25:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure media_entity_init [2021-11-23 02:25:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure media_entity_init [2021-11-23 02:25:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 02:25:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 02:25:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_entity_match_guid [2021-11-23 02:25:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_entity_match_guid [2021-11-23 02:25:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 02:25:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 02:25:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_uninit_video [2021-11-23 02:25:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_uninit_video [2021-11-23 02:25:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_debugfs_cleanup_stream [2021-11-23 02:25:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_debugfs_cleanup_stream [2021-11-23 02:25:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2021-11-23 02:25:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2021-11-23 02:25:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_queue_enable [2021-11-23 02:25:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_queue_enable [2021-11-23 02:25:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_get_video_ctrl [2021-11-23 02:25:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_get_video_ctrl [2021-11-23 02:25:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2021-11-23 02:25:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2021-11-23 02:25:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-23 02:25:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-23 02:25:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_drv_priv [2021-11-23 02:25:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_drv_priv [2021-11-23 02:25:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-23 02:25:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure strcasecmp [2021-11-23 02:25:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 02:25:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 02:25:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_buffer_queue [2021-11-23 02:25:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_buffer_queue [2021-11-23 02:25:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure __uvc_resume [2021-11-23 02:25:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __uvc_resume [2021-11-23 02:25:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:25:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:25:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_unregister_video [2021-11-23 02:25:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_unregister_video [2021-11-23 02:25:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intf [2021-11-23 02:25:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intf [2021-11-23 02:25:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_resume [2021-11-23 02:25:54,590 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_resume [2021-11-23 02:25:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure kmemdup [2021-11-23 02:25:54,590 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemdup [2021-11-23 02:25:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure media_entity_cleanup [2021-11-23 02:25:54,590 INFO L138 BoogieDeclarations]: Found implementation of procedure media_entity_cleanup [2021-11-23 02:25:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_queue_streaming [2021-11-23 02:25:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_queue_streaming [2021-11-23 02:25:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_disconnect [2021-11-23 02:25:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_disconnect [2021-11-23 02:25:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:25:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2021-11-23 02:25:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2021-11-23 02:25:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure uvc_ctrl_get_zoom [2021-11-23 02:25:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure uvc_ctrl_get_zoom [2021-11-23 02:25:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:25:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:25:55,884 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:25:55,892 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:25:56,073 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:25:56,842 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; [2021-11-23 02:25:56,842 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; [2021-11-23 02:25:56,842 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; [2021-11-23 02:25:56,842 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; [2021-11-23 02:25:56,842 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11747: assume 16 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-23 02:25:56,843 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11747: assume !(16 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-23 02:25:56,843 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 [2021-11-23 02:25:56,843 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; [2021-11-23 02:25:56,843 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11739: assume 8 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-23 02:25:56,843 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11739: assume !(8 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-23 02:25:56,843 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11743: assume 10 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-23 02:25:56,844 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11743: assume !(10 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-23 02:25:56,844 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11731: assume 2 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-23 02:25:56,844 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11731: assume !(2 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-23 02:25:56,844 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11735: assume 4 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-23 02:25:56,844 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11735: assume !(4 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-23 02:25:56,844 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 [2021-11-23 02:25:56,845 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume 1 == __copy_to_user_nocheck_~size#1 % 4294967296; [2021-11-23 02:25:56,845 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !(1 == __copy_to_user_nocheck_~size#1 % 4294967296); [2021-11-23 02:25:56,845 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11740: __copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-23 02:25:56,845 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 [2021-11-23 02:25:56,845 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11732: __copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-23 02:25:56,845 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11736: __copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-23 02:25:56,846 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); [2021-11-23 02:25:56,846 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; [2021-11-23 02:25:56,846 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11728: __copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~18#1; [2021-11-23 02:25:59,760 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 [2021-11-23 02:25:59,760 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11634: assume 10 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-23 02:25:59,760 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11634: assume !(10 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-23 02:25:59,760 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11638: assume 16 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-23 02:25:59,760 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11638: assume !(16 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-23 02:25:59,760 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11626: assume 4 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-23 02:25:59,760 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11626: assume !(4 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-23 02:25:59,761 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11630: assume 8 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-23 02:25:59,761 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11630: assume !(8 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-23 02:25:59,761 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11622: assume 2 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-23 02:25:59,761 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11622: assume !(2 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-23 02:25:59,761 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; [2021-11-23 02:25:59,761 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 [2021-11-23 02:25:59,761 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 [2021-11-23 02:25:59,761 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11627: __copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-23 02:25:59,761 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11631: __copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-23 02:25:59,761 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; [2021-11-23 02:25:59,761 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; [2021-11-23 02:25:59,762 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11619: __copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-23 02:25:59,762 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L11623: __copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~17#1; [2021-11-23 02:25:59,762 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume 1 == __copy_from_user_nocheck_~size#1 % 4294967296; [2021-11-23 02:25:59,762 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !(1 == __copy_from_user_nocheck_~size#1 % 4294967296); [2021-11-23 02:25:59,762 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; [2021-11-23 02:25:59,762 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; [2021-11-23 02:25:59,762 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); [2021-11-23 02:25:59,762 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; [2021-11-23 02:28:54,173 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:28:54,253 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:28:57,610 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:28:57,610 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-23 02:28:57,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:28:57 BoogieIcfgContainer [2021-11-23 02:28:57,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:28:57,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:28:57,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:28:57,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:28:57,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:25:45" (1/3) ... [2021-11-23 02:28:57,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef73dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:28:57, skipping insertion in model container [2021-11-23 02:28:57,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:52" (2/3) ... [2021-11-23 02:28:57,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef73dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:28:57, skipping insertion in model container [2021-11-23 02:28:57,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:28:57" (3/3) ... [2021-11-23 02:28:57,628 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i [2021-11-23 02:28:57,633 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:28:57,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-23 02:28:57,692 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:28:57,699 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 [2021-11-23 02:28:57,699 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 02:28:57,764 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) [2021-11-23 02:28:57,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-23 02:28:57,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:57,802 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] [2021-11-23 02:28:57,803 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)] === [2021-11-23 02:28:57,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:57,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1808094733, now seen corresponding path program 1 times [2021-11-23 02:28:57,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:57,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072015197] [2021-11-23 02:28:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:57,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3785 trivial. 0 not checked. [2021-11-23 02:28:59,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:59,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072015197] [2021-11-23 02:28:59,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072015197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:59,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:59,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:28:59,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069040403] [2021-11-23 02:28:59,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:59,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:28:59,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:59,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:28:59,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:59,367 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) [2021-11-23 02:29:01,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:04,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:29:05,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:09,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:12,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:17,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:17,753 INFO L93 Difference]: Finished difference Result 6595 states and 9607 transitions. [2021-11-23 02:29:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:29:17,760 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 [2021-11-23 02:29:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:17,829 INFO L225 Difference]: With dead ends: 6595 [2021-11-23 02:29:17,830 INFO L226 Difference]: Without dead ends: 4345 [2021-11-23 02:29:17,849 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 [2021-11-23 02:29:17,859 INFO L933 BasicCegarLoop]: 3479 mSDtfsCounter, 3024 mSDsluCounter, 3242 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3026 SdHoareTripleChecker+Valid, 6218 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:17,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3026 Valid, 6218 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1114 Invalid, 4 Unknown, 0 Unchecked, 17.9s Time] [2021-11-23 02:29:17,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4345 states. [2021-11-23 02:29:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4345 to 4339. [2021-11-23 02:29:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4339 states, 2843 states have (on average 1.3682729511079845) internal successors, (3890), 2882 states have internal predecessors, (3890), 1198 states have call successors, (1198), 295 states have call predecessors, (1198), 294 states have return successors, (1197), 1183 states have call predecessors, (1197), 1195 states have call successors, (1197) [2021-11-23 02:29:18,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4339 states to 4339 states and 6285 transitions. [2021-11-23 02:29:18,248 INFO L78 Accepts]: Start accepts. Automaton has 4339 states and 6285 transitions. Word has length 339 [2021-11-23 02:29:18,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:18,255 INFO L470 AbstractCegarLoop]: Abstraction has 4339 states and 6285 transitions. [2021-11-23 02:29:18,256 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) [2021-11-23 02:29:18,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4339 states and 6285 transitions. [2021-11-23 02:29:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-23 02:29:18,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:18,284 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] [2021-11-23 02:29:18,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:29:18,285 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)] === [2021-11-23 02:29:18,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:18,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1842801618, now seen corresponding path program 1 times [2021-11-23 02:29:18,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:18,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560028901] [2021-11-23 02:29:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:18,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3918 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3918 trivial. 0 not checked. [2021-11-23 02:29:19,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:19,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560028901] [2021-11-23 02:29:19,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560028901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:19,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:19,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:29:19,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565917150] [2021-11-23 02:29:19,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:19,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:29:19,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:19,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:29:19,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:29:19,143 INFO L87 Difference]: Start difference. First operand 4339 states and 6285 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) [2021-11-23 02:29:21,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:24,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:29:28,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:31,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:34,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:34,014 INFO L93 Difference]: Finished difference Result 10967 states and 15769 transitions. [2021-11-23 02:29:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:29:34,019 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 [2021-11-23 02:29:34,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:34,071 INFO L225 Difference]: With dead ends: 10967 [2021-11-23 02:29:34,071 INFO L226 Difference]: Without dead ends: 6691 [2021-11-23 02:29:34,087 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 [2021-11-23 02:29:34,094 INFO L933 BasicCegarLoop]: 3241 mSDtfsCounter, 1678 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 5997 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:34,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 5997 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1105 Invalid, 3 Unknown, 0 Unchecked, 14.4s Time] [2021-11-23 02:29:34,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6691 states. [2021-11-23 02:29:34,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6691 to 6680. [2021-11-23 02:29:34,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6680 states, 4318 states have (on average 1.3503937007874016) internal successors, (5831), 4374 states have internal predecessors, (5831), 1857 states have call successors, (1857), 502 states have call predecessors, (1857), 501 states have return successors, (1858), 1833 states have call predecessors, (1858), 1854 states have call successors, (1858) [2021-11-23 02:29:34,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6680 states to 6680 states and 9546 transitions. [2021-11-23 02:29:34,425 INFO L78 Accepts]: Start accepts. Automaton has 6680 states and 9546 transitions. Word has length 402 [2021-11-23 02:29:34,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:34,430 INFO L470 AbstractCegarLoop]: Abstraction has 6680 states and 9546 transitions. [2021-11-23 02:29:34,431 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) [2021-11-23 02:29:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 6680 states and 9546 transitions. [2021-11-23 02:29:34,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-11-23 02:29:34,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:34,450 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] [2021-11-23 02:29:34,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:29:34,451 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)] === [2021-11-23 02:29:34,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash -424521088, now seen corresponding path program 1 times [2021-11-23 02:29:34,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:34,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102284706] [2021-11-23 02:29:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:34,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4011 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4002 trivial. 0 not checked. [2021-11-23 02:29:35,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:35,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102284706] [2021-11-23 02:29:35,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102284706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:35,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:35,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:29:35,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383078223] [2021-11-23 02:29:35,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:35,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:29:35,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:35,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:29:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:29:35,165 INFO L87 Difference]: Start difference. First operand 6680 states and 9546 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) [2021-11-23 02:29:37,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:40,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:29:46,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:49,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:49,108 INFO L93 Difference]: Finished difference Result 12523 states and 17789 transitions. [2021-11-23 02:29:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:29:49,109 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 [2021-11-23 02:29:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:49,150 INFO L225 Difference]: With dead ends: 12523 [2021-11-23 02:29:49,151 INFO L226 Difference]: Without dead ends: 5906 [2021-11-23 02:29:49,178 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 [2021-11-23 02:29:49,179 INFO L933 BasicCegarLoop]: 3181 mSDtfsCounter, 1692 mSDsluCounter, 3288 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s 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, 13.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:49,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 5953 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1065 Invalid, 3 Unknown, 0 Unchecked, 13.7s Time] [2021-11-23 02:29:49,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5906 states. [2021-11-23 02:29:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5906 to 5899. [2021-11-23 02:29:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5899 states, 3756 states have (on average 1.3335995740149096) internal successors, (5009), 3804 states have internal predecessors, (5009), 1659 states have call successors, (1659), 481 states have call predecessors, (1659), 480 states have return successors, (1659), 1637 states have call predecessors, (1659), 1656 states have call successors, (1659) [2021-11-23 02:29:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5899 states to 5899 states and 8327 transitions. [2021-11-23 02:29:49,490 INFO L78 Accepts]: Start accepts. Automaton has 5899 states and 8327 transitions. Word has length 422 [2021-11-23 02:29:49,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:49,493 INFO L470 AbstractCegarLoop]: Abstraction has 5899 states and 8327 transitions. [2021-11-23 02:29:49,502 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) [2021-11-23 02:29:49,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5899 states and 8327 transitions. [2021-11-23 02:29:49,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-11-23 02:29:49,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:49,533 INFO L514 BasicCegarLoop]: trace histogram [36, 32, 32, 32, 32, 32, 32, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:29:49,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:29:49,534 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)] === [2021-11-23 02:29:49,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:49,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2028319807, now seen corresponding path program 1 times [2021-11-23 02:29:49,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:49,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095037530] [2021-11-23 02:29:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:49,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4271 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4271 trivial. 0 not checked. [2021-11-23 02:29:50,420 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:50,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095037530] [2021-11-23 02:29:50,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095037530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:50,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:50,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:29:50,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565966241] [2021-11-23 02:29:50,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:50,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:29:50,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:50,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:29:50,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:29:50,425 INFO L87 Difference]: Start difference. First operand 5899 states and 8327 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) [2021-11-23 02:29:52,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:55,546 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:30:00,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:04,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:30:09,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:09,568 INFO L93 Difference]: Finished difference Result 9947 states and 13973 transitions. [2021-11-23 02:30:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:30:09,569 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 413 [2021-11-23 02:30:09,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:09,638 INFO L225 Difference]: With dead ends: 9947 [2021-11-23 02:30:09,638 INFO L226 Difference]: Without dead ends: 9899 [2021-11-23 02:30:09,646 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 [2021-11-23 02:30:09,647 INFO L933 BasicCegarLoop]: 3223 mSDtfsCounter, 2154 mSDsluCounter, 6948 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 9130 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:09,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2154 Valid, 9130 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1579 Invalid, 4 Unknown, 0 Unchecked, 18.9s Time] [2021-11-23 02:30:09,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9899 states. [2021-11-23 02:30:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9899 to 9890. [2021-11-23 02:30:10,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9890 states, 6258 states have (on average 1.326941514860978) internal successors, (8304), 6331 states have internal predecessors, (8304), 2794 states have call successors, (2794), 835 states have call predecessors, (2794), 834 states have return successors, (2795), 2764 states have call predecessors, (2795), 2791 states have call successors, (2795) [2021-11-23 02:30:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9890 states to 9890 states and 13893 transitions. [2021-11-23 02:30:10,114 INFO L78 Accepts]: Start accepts. Automaton has 9890 states and 13893 transitions. Word has length 413 [2021-11-23 02:30:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:10,116 INFO L470 AbstractCegarLoop]: Abstraction has 9890 states and 13893 transitions. [2021-11-23 02:30:10,116 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) [2021-11-23 02:30:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 9890 states and 13893 transitions. [2021-11-23 02:30:10,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-11-23 02:30:10,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:10,155 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] [2021-11-23 02:30:10,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:30:10,156 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)] === [2021-11-23 02:30:10,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash -186816830, now seen corresponding path program 1 times [2021-11-23 02:30:10,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:10,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142845819] [2021-11-23 02:30:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:10,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4589 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4589 trivial. 0 not checked. [2021-11-23 02:30:11,093 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:11,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142845819] [2021-11-23 02:30:11,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142845819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:11,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:11,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:30:11,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082265581] [2021-11-23 02:30:11,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:11,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:30:11,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:11,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:30:11,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:30:11,097 INFO L87 Difference]: Start difference. First operand 9890 states and 13893 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) [2021-11-23 02:30:13,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:17,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:20,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:24,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:30:25,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:36,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:30:36,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:36,916 INFO L93 Difference]: Finished difference Result 13484 states and 19702 transitions. [2021-11-23 02:30:36,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:30:36,917 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 [2021-11-23 02:30:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:36,980 INFO L225 Difference]: With dead ends: 13484 [2021-11-23 02:30:36,981 INFO L226 Difference]: Without dead ends: 13482 [2021-11-23 02:30:36,985 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 [2021-11-23 02:30:36,986 INFO L933 BasicCegarLoop]: 4778 mSDtfsCounter, 3762 mSDsluCounter, 8530 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 208 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4091 SdHoareTripleChecker+Valid, 12077 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:36,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4091 Valid, 12077 Invalid, 2491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [208 Valid, 2279 Invalid, 4 Unknown, 0 Unchecked, 25.2s Time] [2021-11-23 02:30:37,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13482 states. [2021-11-23 02:30:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13482 to 9890. [2021-11-23 02:30:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9890 states, 6258 states have (on average 1.3267817193991691) internal successors, (8303), 6331 states have internal predecessors, (8303), 2794 states have call successors, (2794), 835 states have call predecessors, (2794), 834 states have return successors, (2795), 2764 states have call predecessors, (2795), 2791 states have call successors, (2795) [2021-11-23 02:30:37,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9890 states to 9890 states and 13892 transitions. [2021-11-23 02:30:37,492 INFO L78 Accepts]: Start accepts. Automaton has 9890 states and 13892 transitions. Word has length 501 [2021-11-23 02:30:37,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:37,494 INFO L470 AbstractCegarLoop]: Abstraction has 9890 states and 13892 transitions. [2021-11-23 02:30:37,494 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) [2021-11-23 02:30:37,494 INFO L276 IsEmpty]: Start isEmpty. Operand 9890 states and 13892 transitions. [2021-11-23 02:30:37,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2021-11-23 02:30:37,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:37,523 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] [2021-11-23 02:30:37,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:30:37,523 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)] === [2021-11-23 02:30:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:37,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1348092818, now seen corresponding path program 1 times [2021-11-23 02:30:37,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:37,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353576697] [2021-11-23 02:30:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:37,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4374 trivial. 0 not checked. [2021-11-23 02:30:38,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:38,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353576697] [2021-11-23 02:30:38,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353576697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:38,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:38,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:30:38,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940559878] [2021-11-23 02:30:38,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:38,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:30:38,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:38,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:30:38,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:30:38,208 INFO L87 Difference]: Start difference. First operand 9890 states and 13892 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) [2021-11-23 02:30:40,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:45,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:30:49,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:56,356 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:30:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:56,581 INFO L93 Difference]: Finished difference Result 21543 states and 30280 transitions. [2021-11-23 02:30:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:30:56,581 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 [2021-11-23 02:30:56,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:56,637 INFO L225 Difference]: With dead ends: 21543 [2021-11-23 02:30:56,637 INFO L226 Difference]: Without dead ends: 12820 [2021-11-23 02:30:56,672 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 [2021-11-23 02:30:56,673 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 2826 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 10 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2826 SdHoareTripleChecker+Valid, 6857 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:56,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2826 Valid, 6857 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1317 Invalid, 4 Unknown, 0 Unchecked, 18.0s Time] [2021-11-23 02:30:56,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12820 states. [2021-11-23 02:30:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12820 to 12802. [2021-11-23 02:30:57,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12802 states, 8113 states have (on average 1.3288549241957353) internal successors, (10781), 8210 states have internal predecessors, (10781), 3600 states have call successors, (3600), 1086 states have call predecessors, (3600), 1085 states have return successors, (3601), 3559 states have call predecessors, (3601), 3597 states have call successors, (3601) [2021-11-23 02:30:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12802 states to 12802 states and 17982 transitions. [2021-11-23 02:30:57,212 INFO L78 Accepts]: Start accepts. Automaton has 12802 states and 17982 transitions. Word has length 482 [2021-11-23 02:30:57,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:57,213 INFO L470 AbstractCegarLoop]: Abstraction has 12802 states and 17982 transitions. [2021-11-23 02:30:57,214 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) [2021-11-23 02:30:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 12802 states and 17982 transitions. [2021-11-23 02:30:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2021-11-23 02:30:57,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:57,248 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] [2021-11-23 02:30:57,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:30:57,249 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)] === [2021-11-23 02:30:57,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1521143433, now seen corresponding path program 1 times [2021-11-23 02:30:57,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:57,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487113516] [2021-11-23 02:30:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:57,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4865 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4865 trivial. 0 not checked. [2021-11-23 02:30:57,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:57,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487113516] [2021-11-23 02:30:57,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487113516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:57,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:57,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:30:57,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719565010] [2021-11-23 02:30:57,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:57,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:30:57,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:57,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:30:57,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:30:57,940 INFO L87 Difference]: Start difference. First operand 12802 states and 17982 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) [2021-11-23 02:31:00,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:03,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:31:10,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:18,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:31:19,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:19,260 INFO L93 Difference]: Finished difference Result 23553 states and 34081 transitions. [2021-11-23 02:31:19,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:31:19,261 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 [2021-11-23 02:31:19,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:19,339 INFO L225 Difference]: With dead ends: 23553 [2021-11-23 02:31:19,340 INFO L226 Difference]: Without dead ends: 17135 [2021-11-23 02:31:19,366 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 [2021-11-23 02:31:19,367 INFO L933 BasicCegarLoop]: 3997 mSDtfsCounter, 2100 mSDsluCounter, 7836 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 502 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 10644 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:19,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2310 Valid, 10644 Invalid, 2412 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [502 Valid, 1906 Invalid, 4 Unknown, 0 Unchecked, 20.7s Time] [2021-11-23 02:31:19,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17135 states. [2021-11-23 02:31:19,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17135 to 12804. [2021-11-23 02:31:19,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12804 states, 8115 states have (on average 1.3287738755391252) internal successors, (10783), 8212 states have internal predecessors, (10783), 3600 states have call successors, (3600), 1086 states have call predecessors, (3600), 1085 states have return successors, (3601), 3559 states have call predecessors, (3601), 3597 states have call successors, (3601) [2021-11-23 02:31:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12804 states to 12804 states and 17984 transitions. [2021-11-23 02:31:20,027 INFO L78 Accepts]: Start accepts. Automaton has 12804 states and 17984 transitions. Word has length 558 [2021-11-23 02:31:20,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:20,028 INFO L470 AbstractCegarLoop]: Abstraction has 12804 states and 17984 transitions. [2021-11-23 02:31:20,028 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) [2021-11-23 02:31:20,029 INFO L276 IsEmpty]: Start isEmpty. Operand 12804 states and 17984 transitions. [2021-11-23 02:31:20,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2021-11-23 02:31:20,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:20,062 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] [2021-11-23 02:31:20,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:31:20,062 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)] === [2021-11-23 02:31:20,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:20,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1795504855, now seen corresponding path program 1 times [2021-11-23 02:31:20,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:20,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575237142] [2021-11-23 02:31:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:20,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4865 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4865 trivial. 0 not checked. [2021-11-23 02:31:21,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:21,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575237142] [2021-11-23 02:31:21,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575237142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:21,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:21,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:31:21,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688301141] [2021-11-23 02:31:21,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:21,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:31:21,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:21,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:31:21,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:31:21,288 INFO L87 Difference]: Start difference. First operand 12804 states and 17984 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) [2021-11-23 02:31:23,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:28,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:31:29,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:34,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:35,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:37,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:38,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:42,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:54,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:54,764 INFO L93 Difference]: Finished difference Result 23351 states and 33723 transitions. [2021-11-23 02:31:54,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:31:54,765 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 [2021-11-23 02:31:54,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:54,835 INFO L225 Difference]: With dead ends: 23351 [2021-11-23 02:31:54,835 INFO L226 Difference]: Without dead ends: 16919 [2021-11-23 02:31:54,865 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 [2021-11-23 02:31:54,865 INFO L933 BasicCegarLoop]: 3534 mSDtfsCounter, 529 mSDsluCounter, 24414 mSDsCounter, 0 mSdLazyCounter, 4482 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 24167 SdHoareTripleChecker+Invalid, 4485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4482 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:54,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 24167 Invalid, 4485 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 4482 Invalid, 3 Unknown, 0 Unchecked, 32.9s Time] [2021-11-23 02:31:54,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16919 states. [2021-11-23 02:31:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16919 to 12816. [2021-11-23 02:31:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12816 states, 8123 states have (on average 1.3284500800196972) internal successors, (10791), 8220 states have internal predecessors, (10791), 3600 states have call successors, (3600), 1086 states have call predecessors, (3600), 1089 states have return successors, (3615), 3563 states have call predecessors, (3615), 3597 states have call successors, (3615) [2021-11-23 02:31:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12816 states to 12816 states and 18006 transitions. [2021-11-23 02:31:55,658 INFO L78 Accepts]: Start accepts. Automaton has 12816 states and 18006 transitions. Word has length 564 [2021-11-23 02:31:55,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:55,659 INFO L470 AbstractCegarLoop]: Abstraction has 12816 states and 18006 transitions. [2021-11-23 02:31:55,659 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) [2021-11-23 02:31:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 12816 states and 18006 transitions. [2021-11-23 02:31:55,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2021-11-23 02:31:55,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:55,693 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] [2021-11-23 02:31:55,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:31:55,694 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)] === [2021-11-23 02:31:55,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:55,694 INFO L85 PathProgramCache]: Analyzing trace with hash -384399921, now seen corresponding path program 1 times [2021-11-23 02:31:55,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:55,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634442107] [2021-11-23 02:31:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:55,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:55,968 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:31:55,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714385466] [2021-11-23 02:31:55,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:55,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:31:55,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:31:55,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:31:55,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:31:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:58,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 12713 conjuncts, 238 conjunts are in the unsatisfiable core [2021-11-23 02:31:58,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:01,175 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 [2021-11-23 02:32:01,595 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 [2021-11-23 02:32:02,039 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 [2021-11-23 02:32:02,052 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 [2021-11-23 02:32:03,473 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-11-23 02:32:03,474 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 [2021-11-23 02:32:03,506 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 02:32:03,507 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 [2021-11-23 02:32:03,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:32:03,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:32:03,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:32:03,550 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 [2021-11-23 02:32:03,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:32:03,563 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 [2021-11-23 02:32:04,454 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 [2021-11-23 02:32:04,705 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 02:32:04,706 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 [2021-11-23 02:32:04,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:32:04,736 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 [2021-11-23 02:32:04,919 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 [2021-11-23 02:32:04,985 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 [2021-11-23 02:32:05,010 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 [2021-11-23 02:32:05,180 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 02:32:05,180 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 [2021-11-23 02:32:05,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:32:05,217 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 [2021-11-23 02:32:06,350 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 [2021-11-23 02:32:06,356 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 [2021-11-23 02:32:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4940 backedges. 72 proven. 288 refuted. 0 times theorem prover too weak. 4580 trivial. 0 not checked. [2021-11-23 02:32:06,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:32:07,899 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 [2021-11-23 02:32:08,260 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 [2021-11-23 02:32:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4940 trivial. 0 not checked. [2021-11-23 02:32:12,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:12,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634442107] [2021-11-23 02:32:12,025 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:32:12,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714385466] [2021-11-23 02:32:12,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714385466] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 02:32:12,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:32:12,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [21] total 34 [2021-11-23 02:32:12,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786661559] [2021-11-23 02:32:12,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:12,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 02:32:12,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:12,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 02:32:12,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 02:32:12,029 INFO L87 Difference]: Start difference. First operand 12816 states and 18006 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) [2021-11-23 02:32:14,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:32,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:33:03,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:08,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:28,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:34,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:34:44,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:34:53,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:34:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:34:55,947 INFO L93 Difference]: Finished difference Result 19173 states and 27119 transitions. [2021-11-23 02:34:55,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 02:34:55,948 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 [2021-11-23 02:34:55,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:34:56,029 INFO L225 Difference]: With dead ends: 19173 [2021-11-23 02:34:56,029 INFO L226 Difference]: Without dead ends: 19171 [2021-11-23 02:34:56,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1121 SyntacticMatches, 9 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=239, Invalid=2017, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 02:34:56,039 INFO L933 BasicCegarLoop]: 3001 mSDtfsCounter, 3988 mSDsluCounter, 21320 mSDsCounter, 0 mSdLazyCounter, 27909 mSolverCounterSat, 3389 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4266 SdHoareTripleChecker+Valid, 20845 SdHoareTripleChecker+Invalid, 33439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3389 IncrementalHoareTripleChecker+Valid, 27909 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 2136 IncrementalHoareTripleChecker+Unchecked, 159.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:34:56,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4266 Valid, 20845 Invalid, 33439 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3389 Valid, 27909 Invalid, 5 Unknown, 2136 Unchecked, 159.9s Time] [2021-11-23 02:34:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19171 states. [2021-11-23 02:34:57,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19171 to 18371. [2021-11-23 02:34:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18371 states, 11595 states have (on average 1.326261319534282) internal successors, (15378), 11749 states have internal predecessors, (15378), 5193 states have call successors, (5193), 1566 states have call predecessors, (5193), 1579 states have return successors, (5236), 5136 states have call predecessors, (5236), 5190 states have call successors, (5236) [2021-11-23 02:34:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18371 states to 18371 states and 25807 transitions. [2021-11-23 02:34:57,198 INFO L78 Accepts]: Start accepts. Automaton has 18371 states and 25807 transitions. Word has length 581 [2021-11-23 02:34:57,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:34:57,200 INFO L470 AbstractCegarLoop]: Abstraction has 18371 states and 25807 transitions. [2021-11-23 02:34:57,200 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) [2021-11-23 02:34:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 18371 states and 25807 transitions. [2021-11-23 02:34:57,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2021-11-23 02:34:57,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:34:57,225 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] [2021-11-23 02:34:57,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:34:57,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 02:34:57,439 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)] === [2021-11-23 02:34:57,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:34:57,440 INFO L85 PathProgramCache]: Analyzing trace with hash -856385677, now seen corresponding path program 1 times [2021-11-23 02:34:57,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:34:57,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897845372] [2021-11-23 02:34:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:57,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:34:57,728 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:34:57,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979698610] [2021-11-23 02:34:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:57,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:34:57,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:34:57,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:34:57,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db770dcc-ece2-44ab-a660-87f6f18b85a7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:35:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:00,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 12682 conjuncts, 121 conjunts are in the unsatisfiable core [2021-11-23 02:35:00,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:35:01,657 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 [2021-11-23 02:35:03,774 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 [2021-11-23 02:35:03,809 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-23 02:35:03,810 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 [2021-11-23 02:35:03,913 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 02:35:03,913 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 [2021-11-23 02:35:04,228 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 [2021-11-23 02:35:04,234 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 [2021-11-23 02:35:08,929 INFO L354 Elim1Store]: treesize reduction 3169, result has 22.5 percent of original size [2021-11-23 02:35:08,930 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