./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 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a521111bd175d3310336dcb5a96ef10ad6928036ed2148cdf12f5390a99f6bb7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:53:20,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:53:20,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:53:20,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:53:20,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:53:20,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:53:20,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:53:20,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:53:20,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:53:20,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:53:20,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:53:20,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:53:20,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:53:20,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:53:20,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:53:20,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:53:20,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:53:20,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:53:20,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:53:20,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:53:20,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:53:20,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:53:20,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:53:20,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:53:20,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:53:20,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:53:20,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:53:20,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:53:20,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:53:20,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:53:20,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:53:20,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:53:20,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:53:20,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:53:20,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:53:20,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:53:20,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:53:20,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:53:20,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:53:20,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:53:20,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:53:20,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:53:20,916 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:53:20,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:53:20,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:53:20,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:53:20,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:53:20,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:53:20,919 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:53:20,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:53:20,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:53:20,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:53:20,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:53:20,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:53:20,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:53:20,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:53:20,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:53:20,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:53:20,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:53:20,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:53:20,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:53:20,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:53:20,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:53:20,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:53:20,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:53:20,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:53:20,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:53:20,923 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:53:20,923 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:53:20,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:53:20,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:53:20,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a521111bd175d3310336dcb5a96ef10ad6928036ed2148cdf12f5390a99f6bb7 [2021-11-06 20:53:21,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:53:21,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:53:21,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:53:21,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:53:21,110 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:53:21,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i [2021-11-06 20:53:21,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80378cef/295fc03b795e433d958049d8aebf760c/FLAG54e80fbea [2021-11-06 20:53:21,859 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:53:21,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i [2021-11-06 20:53:21,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80378cef/295fc03b795e433d958049d8aebf760c/FLAG54e80fbea [2021-11-06 20:53:22,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80378cef/295fc03b795e433d958049d8aebf760c [2021-11-06 20:53:22,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:53:22,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:53:22,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:53:22,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:53:22,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:53:22,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:53:22" (1/1) ... [2021-11-06 20:53:22,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b74ea59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:22, skipping insertion in model container [2021-11-06 20:53:22,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:53:22" (1/1) ... [2021-11-06 20:53:22,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:53:22,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:53:26,505 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599511,599524] [2021-11-06 20:53:26,507 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599658,599671] [2021-11-06 20:53:26,507 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599797,599810] [2021-11-06 20:53:26,508 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599955,599968] [2021-11-06 20:53:26,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:53:26,607 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:53:27,103 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599511,599524] [2021-11-06 20:53:27,119 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599658,599671] [2021-11-06 20:53:27,120 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599797,599810] [2021-11-06 20:53:27,120 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i[599955,599968] [2021-11-06 20:53:27,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:53:27,294 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:53:27,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:27 WrapperNode [2021-11-06 20:53:27,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:53:27,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:53:27,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:53:27,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:53:27,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:27" (1/1) ... [2021-11-06 20:53:27,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:27" (1/1) ... [2021-11-06 20:53:28,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:53:28,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:53:28,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:53:28,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:53:28,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:27" (1/1) ... [2021-11-06 20:53:28,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:27" (1/1) ... [2021-11-06 20:53:28,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:27" (1/1) ... [2021-11-06 20:53:28,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:27" (1/1) ... [2021-11-06 20:53:29,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:27" (1/1) ... [2021-11-06 20:53:29,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:27" (1/1) ... [2021-11-06 20:53:29,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:27" (1/1) ... [2021-11-06 20:53:29,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:53:29,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:53:29,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:53:29,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:53:29,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:27" (1/1) ... [2021-11-06 20:53:29,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:53:29,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:53:29,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 20:53:29,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 20:53:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-06 20:53:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 20:53:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:53:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:53:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:53:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:53:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-06 20:53:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:53:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:53:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 20:53:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:53:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:53:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:53:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:53:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:53:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:53:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:53:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:53:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:58:15,515 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11600-3: __copy_from_user_nocheck_#t~ret1212 := copy_user_generic_#res;__copy_from_user_nocheck_~tmp___2~10 := __copy_from_user_nocheck_#t~ret1212;havoc __copy_from_user_nocheck_#t~ret1212;__copy_from_user_nocheck_#res := (if __copy_from_user_nocheck_~tmp___2~10 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_nocheck_~tmp___2~10 % 18446744073709551616 % 4294967296 else __copy_from_user_nocheck_~tmp___2~10 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-06 20:58:15,516 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11600-5: __copy_to_user_nocheck_#t~ret1217 := copy_user_generic_#res;__copy_to_user_nocheck_~tmp___2~11 := __copy_to_user_nocheck_#t~ret1217;havoc __copy_to_user_nocheck_#t~ret1217;__copy_to_user_nocheck_#res := (if __copy_to_user_nocheck_~tmp___2~11 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_nocheck_~tmp___2~11 % 18446744073709551616 % 4294967296 else __copy_to_user_nocheck_~tmp___2~11 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-06 20:58:15,516 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11600-1: __copy_from_user_nocheck_#t~ret1212 := copy_user_generic_#res;__copy_from_user_nocheck_~tmp___2~10 := __copy_from_user_nocheck_#t~ret1212;havoc __copy_from_user_nocheck_#t~ret1212;__copy_from_user_nocheck_#res := (if __copy_from_user_nocheck_~tmp___2~10 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_nocheck_~tmp___2~10 % 18446744073709551616 % 4294967296 else __copy_from_user_nocheck_~tmp___2~10 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-06 20:58:15,516 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11600-7: __copy_to_user_nocheck_#t~ret1217 := copy_user_generic_#res;__copy_to_user_nocheck_~tmp___2~11 := __copy_to_user_nocheck_#t~ret1217;havoc __copy_to_user_nocheck_#t~ret1217;__copy_to_user_nocheck_#res := (if __copy_to_user_nocheck_~tmp___2~11 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_nocheck_~tmp___2~11 % 18446744073709551616 % 4294967296 else __copy_to_user_nocheck_~tmp___2~11 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-06 20:58:15,517 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11619-1: __copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,517 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11619: __copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,517 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 20:58:15,517 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11622-1: assume 2 == __copy_from_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,517 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11622-1: assume !(2 == __copy_from_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,517 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11622: assume 2 == __copy_from_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,518 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11622: assume !(2 == __copy_from_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,518 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11623-1: __copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,518 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11623: __copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,518 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11626: assume 4 == __copy_from_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,518 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11626: assume !(4 == __copy_from_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,518 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11626-1: assume 4 == __copy_from_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,519 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11626-1: assume !(4 == __copy_from_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,519 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11627-1: __copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,519 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11627: __copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,519 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11630-1: assume 8 == __copy_from_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,519 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11630-1: assume !(8 == __copy_from_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,519 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11630: assume 8 == __copy_from_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,519 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11630: assume !(8 == __copy_from_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,520 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11631-1: __copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,520 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11631: __copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,520 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11634: assume 10 == __copy_from_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,520 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11634: assume !(10 == __copy_from_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,520 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11634-1: assume 10 == __copy_from_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,520 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11634-1: assume !(10 == __copy_from_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,520 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11635-1: ldv__builtin_expect_#in~exp, ldv__builtin_expect_#in~c := (if 0 != __copy_from_user_nocheck_~ret~17 then 1 else 0), 0;havoc ldv__builtin_expect_#res;havoc ldv__builtin_expect_~exp, ldv__builtin_expect_~c;ldv__builtin_expect_~exp := ldv__builtin_expect_#in~exp;ldv__builtin_expect_~c := ldv__builtin_expect_#in~c;ldv__builtin_expect_#res := ldv__builtin_expect_~exp; [2021-11-06 20:58:15,521 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11635: ldv__builtin_expect_#in~exp, ldv__builtin_expect_#in~c := (if 0 != __copy_from_user_nocheck_~ret~17 then 1 else 0), 0;havoc ldv__builtin_expect_#res;havoc ldv__builtin_expect_~exp, ldv__builtin_expect_~c;ldv__builtin_expect_~exp := ldv__builtin_expect_#in~exp;ldv__builtin_expect_~c := ldv__builtin_expect_#in~c;ldv__builtin_expect_#res := ldv__builtin_expect_~exp; [2021-11-06 20:58:15,521 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11638-1: assume 16 == __copy_from_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,521 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11638-1: assume !(16 == __copy_from_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,521 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11638: assume 16 == __copy_from_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,521 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11638: assume !(16 == __copy_from_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,522 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11639-1: ldv__builtin_expect_#in~exp, ldv__builtin_expect_#in~c := (if 0 != __copy_from_user_nocheck_~ret~17 then 1 else 0), 0;havoc ldv__builtin_expect_#res;havoc ldv__builtin_expect_~exp, ldv__builtin_expect_~c;ldv__builtin_expect_~exp := ldv__builtin_expect_#in~exp;ldv__builtin_expect_~c := ldv__builtin_expect_#in~c;ldv__builtin_expect_#res := ldv__builtin_expect_~exp; [2021-11-06 20:58:15,522 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11639: ldv__builtin_expect_#in~exp, ldv__builtin_expect_#in~c := (if 0 != __copy_from_user_nocheck_~ret~17 then 1 else 0), 0;havoc ldv__builtin_expect_#res;havoc ldv__builtin_expect_~exp, ldv__builtin_expect_~c;ldv__builtin_expect_~exp := ldv__builtin_expect_#in~exp;ldv__builtin_expect_~c := ldv__builtin_expect_#in~c;ldv__builtin_expect_#res := ldv__builtin_expect_~exp; [2021-11-06 20:58:15,526 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11642: copy_user_generic_#in~to.base, copy_user_generic_#in~to.offset, copy_user_generic_#in~from.base, copy_user_generic_#in~from.offset, copy_user_generic_#in~len := __copy_from_user_nocheck_~dst.base, __copy_from_user_nocheck_~dst.offset, __copy_from_user_nocheck_~src.base, __copy_from_user_nocheck_~src.offset, __copy_from_user_nocheck_~size;havoc copy_user_generic_#res;havoc copy_user_generic_~to.base, copy_user_generic_~to.offset, copy_user_generic_~from.base, copy_user_generic_~from.offset, copy_user_generic_~len, copy_user_generic_~ret~16;copy_user_generic_~to.base, copy_user_generic_~to.offset := copy_user_generic_#in~to.base, copy_user_generic_#in~to.offset;copy_user_generic_~from.base, copy_user_generic_~from.offset := copy_user_generic_#in~from.base, copy_user_generic_#in~from.offset;copy_user_generic_~len := copy_user_generic_#in~len;havoc copy_user_generic_~ret~16;copy_user_generic_#res := copy_user_generic_~ret~16 % 4294967296; [2021-11-06 20:58:15,527 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11642-1: copy_user_generic_#in~to.base, copy_user_generic_#in~to.offset, copy_user_generic_#in~from.base, copy_user_generic_#in~from.offset, copy_user_generic_#in~len := __copy_from_user_nocheck_~dst.base, __copy_from_user_nocheck_~dst.offset, __copy_from_user_nocheck_~src.base, __copy_from_user_nocheck_~src.offset, __copy_from_user_nocheck_~size;havoc copy_user_generic_#res;havoc copy_user_generic_~to.base, copy_user_generic_~to.offset, copy_user_generic_~from.base, copy_user_generic_~from.offset, copy_user_generic_~len, copy_user_generic_~ret~16;copy_user_generic_~to.base, copy_user_generic_~to.offset := copy_user_generic_#in~to.base, copy_user_generic_#in~to.offset;copy_user_generic_~from.base, copy_user_generic_~from.offset := copy_user_generic_#in~from.base, copy_user_generic_#in~from.offset;copy_user_generic_~len := copy_user_generic_#in~len;havoc copy_user_generic_~ret~16;copy_user_generic_#res := copy_user_generic_~ret~16 % 4294967296; [2021-11-06 20:58:15,527 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:58:15,527 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11670-1: assume 0 != __copy_from_user_nocheck_~tmp___0~25;__copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,527 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11670-1: assume !(0 != __copy_from_user_nocheck_~tmp___0~25);__copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,527 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11670: assume 0 != __copy_from_user_nocheck_~tmp___0~25;__copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,527 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11670: assume !(0 != __copy_from_user_nocheck_~tmp___0~25);__copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,528 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11685-1: assume 0 != __copy_from_user_nocheck_~tmp___1~14;__copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,528 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11685-1: assume !(0 != __copy_from_user_nocheck_~tmp___1~14);__copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,528 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11685: assume 0 != __copy_from_user_nocheck_~tmp___1~14;__copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,528 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11685: assume !(0 != __copy_from_user_nocheck_~tmp___1~14);__copy_from_user_nocheck_#res := __copy_from_user_nocheck_~ret~17; [2021-11-06 20:58:15,528 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11728: __copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,528 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11728-1: __copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,528 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11731-1: assume 2 == __copy_to_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,528 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11731-1: assume !(2 == __copy_to_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,528 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11731: assume 2 == __copy_to_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,528 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11731: assume !(2 == __copy_to_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,529 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11732: __copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,529 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11732-1: __copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,529 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11735-1: assume 4 == __copy_to_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,529 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11735-1: assume !(4 == __copy_to_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,529 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11735: assume 4 == __copy_to_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,529 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11735: assume !(4 == __copy_to_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,529 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11736: __copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,529 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11736-1: __copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,530 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11739-1: assume 8 == __copy_to_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,530 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11739-1: assume !(8 == __copy_to_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,530 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11739: assume 8 == __copy_to_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,530 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11739: assume !(8 == __copy_to_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,530 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11740: __copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,530 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11740-1: __copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,530 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11743-1: assume 10 == __copy_to_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,530 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11743-1: assume !(10 == __copy_to_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,531 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11743: assume 10 == __copy_to_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,531 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11743: assume !(10 == __copy_to_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,531 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11744: ldv__builtin_expect_#in~exp, ldv__builtin_expect_#in~c := (if 0 != __copy_to_user_nocheck_~ret~18 then 1 else 0), 0;havoc ldv__builtin_expect_#res;havoc ldv__builtin_expect_~exp, ldv__builtin_expect_~c;ldv__builtin_expect_~exp := ldv__builtin_expect_#in~exp;ldv__builtin_expect_~c := ldv__builtin_expect_#in~c;ldv__builtin_expect_#res := ldv__builtin_expect_~exp; [2021-11-06 20:58:15,531 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11744-1: ldv__builtin_expect_#in~exp, ldv__builtin_expect_#in~c := (if 0 != __copy_to_user_nocheck_~ret~18 then 1 else 0), 0;havoc ldv__builtin_expect_#res;havoc ldv__builtin_expect_~exp, ldv__builtin_expect_~c;ldv__builtin_expect_~exp := ldv__builtin_expect_#in~exp;ldv__builtin_expect_~c := ldv__builtin_expect_#in~c;ldv__builtin_expect_#res := ldv__builtin_expect_~exp; [2021-11-06 20:58:15,531 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11747-1: assume 16 == __copy_to_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,531 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11747-1: assume !(16 == __copy_to_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,531 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11747: assume 16 == __copy_to_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,532 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11747: assume !(16 == __copy_to_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,532 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11748: ldv__builtin_expect_#in~exp, ldv__builtin_expect_#in~c := (if 0 != __copy_to_user_nocheck_~ret~18 then 1 else 0), 0;havoc ldv__builtin_expect_#res;havoc ldv__builtin_expect_~exp, ldv__builtin_expect_~c;ldv__builtin_expect_~exp := ldv__builtin_expect_#in~exp;ldv__builtin_expect_~c := ldv__builtin_expect_#in~c;ldv__builtin_expect_#res := ldv__builtin_expect_~exp; [2021-11-06 20:58:15,532 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11748-1: ldv__builtin_expect_#in~exp, ldv__builtin_expect_#in~c := (if 0 != __copy_to_user_nocheck_~ret~18 then 1 else 0), 0;havoc ldv__builtin_expect_#res;havoc ldv__builtin_expect_~exp, ldv__builtin_expect_~c;ldv__builtin_expect_~exp := ldv__builtin_expect_#in~exp;ldv__builtin_expect_~c := ldv__builtin_expect_#in~c;ldv__builtin_expect_#res := ldv__builtin_expect_~exp; [2021-11-06 20:58:15,532 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11751-1: copy_user_generic_#in~to.base, copy_user_generic_#in~to.offset, copy_user_generic_#in~from.base, copy_user_generic_#in~from.offset, copy_user_generic_#in~len := __copy_to_user_nocheck_~dst.base, __copy_to_user_nocheck_~dst.offset, __copy_to_user_nocheck_~src.base, __copy_to_user_nocheck_~src.offset, __copy_to_user_nocheck_~size;havoc copy_user_generic_#res;havoc copy_user_generic_~to.base, copy_user_generic_~to.offset, copy_user_generic_~from.base, copy_user_generic_~from.offset, copy_user_generic_~len, copy_user_generic_~ret~16;copy_user_generic_~to.base, copy_user_generic_~to.offset := copy_user_generic_#in~to.base, copy_user_generic_#in~to.offset;copy_user_generic_~from.base, copy_user_generic_~from.offset := copy_user_generic_#in~from.base, copy_user_generic_#in~from.offset;copy_user_generic_~len := copy_user_generic_#in~len;havoc copy_user_generic_~ret~16;copy_user_generic_#res := copy_user_generic_~ret~16 % 4294967296; [2021-11-06 20:58:15,532 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11751: copy_user_generic_#in~to.base, copy_user_generic_#in~to.offset, copy_user_generic_#in~from.base, copy_user_generic_#in~from.offset, copy_user_generic_#in~len := __copy_to_user_nocheck_~dst.base, __copy_to_user_nocheck_~dst.offset, __copy_to_user_nocheck_~src.base, __copy_to_user_nocheck_~src.offset, __copy_to_user_nocheck_~size;havoc copy_user_generic_#res;havoc copy_user_generic_~to.base, copy_user_generic_~to.offset, copy_user_generic_~from.base, copy_user_generic_~from.offset, copy_user_generic_~len, copy_user_generic_~ret~16;copy_user_generic_~to.base, copy_user_generic_~to.offset := copy_user_generic_#in~to.base, copy_user_generic_#in~to.offset;copy_user_generic_~from.base, copy_user_generic_~from.offset := copy_user_generic_#in~from.base, copy_user_generic_#in~from.offset;copy_user_generic_~len := copy_user_generic_#in~len;havoc copy_user_generic_~ret~16;copy_user_generic_#res := copy_user_generic_~ret~16 % 4294967296; [2021-11-06 20:58:15,532 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11774-1: assume 0 != __copy_to_user_nocheck_~tmp___0~26;__copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,532 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11774-1: assume !(0 != __copy_to_user_nocheck_~tmp___0~26);__copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,533 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11774: assume 0 != __copy_to_user_nocheck_~tmp___0~26;__copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,533 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11774: assume !(0 != __copy_to_user_nocheck_~tmp___0~26);__copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,533 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11788: assume 0 != __copy_to_user_nocheck_~tmp___1~15;__copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,533 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11788: assume !(0 != __copy_to_user_nocheck_~tmp___1~15);__copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,533 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11788-1: assume 0 != __copy_to_user_nocheck_~tmp___1~15;__copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,533 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11788-1: assume !(0 != __copy_to_user_nocheck_~tmp___1~15);__copy_to_user_nocheck_#res := __copy_to_user_nocheck_~ret~18; [2021-11-06 20:58:15,533 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:58:15,534 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5990: assume 1 == __copy_from_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,534 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5991: assume !(1 == __copy_from_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,535 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:58:15,535 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-06 20:58:15,535 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6073: assume 1 == __copy_from_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,535 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6074: assume !(1 == __copy_from_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,535 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-06 20:58:15,536 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6228: assume !(1 == __copy_to_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,536 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6227: assume 1 == __copy_to_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,536 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6176: assume 1 == __copy_to_user_nocheck_~size % 4294967296; [2021-11-06 20:58:15,536 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6177: assume !(1 == __copy_to_user_nocheck_~size % 4294967296); [2021-11-06 20:58:15,536 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 20:58:15,537 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L20889-5: __copy_from_user_nocheck_#t~ret1210 := ldv__builtin_expect_#res;assume -9223372036854775808 <= __copy_from_user_nocheck_#t~ret1210 && __copy_from_user_nocheck_#t~ret1210 <= 9223372036854775807;__copy_from_user_nocheck_~tmp___0~25 := __copy_from_user_nocheck_#t~ret1210;havoc __copy_from_user_nocheck_#t~ret1210; [2021-11-06 20:58:15,537 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L20889-6: __copy_from_user_nocheck_#t~ret1211 := ldv__builtin_expect_#res;assume -9223372036854775808 <= __copy_from_user_nocheck_#t~ret1211 && __copy_from_user_nocheck_#t~ret1211 <= 9223372036854775807;__copy_from_user_nocheck_~tmp___1~14 := __copy_from_user_nocheck_#t~ret1211;havoc __copy_from_user_nocheck_#t~ret1211; [2021-11-06 20:58:15,537 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L20889-17: __copy_to_user_nocheck_#t~ret1216 := ldv__builtin_expect_#res;assume -9223372036854775808 <= __copy_to_user_nocheck_#t~ret1216 && __copy_to_user_nocheck_#t~ret1216 <= 9223372036854775807;__copy_to_user_nocheck_~tmp___1~15 := __copy_to_user_nocheck_#t~ret1216;havoc __copy_to_user_nocheck_#t~ret1216; [2021-11-06 20:58:15,537 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L20889-16: __copy_to_user_nocheck_#t~ret1215 := ldv__builtin_expect_#res;assume -9223372036854775808 <= __copy_to_user_nocheck_#t~ret1215 && __copy_to_user_nocheck_#t~ret1215 <= 9223372036854775807;__copy_to_user_nocheck_~tmp___0~26 := __copy_to_user_nocheck_#t~ret1215;havoc __copy_to_user_nocheck_#t~ret1215; [2021-11-06 20:58:15,537 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L20889-9: __copy_from_user_nocheck_#t~ret1210 := ldv__builtin_expect_#res;assume -9223372036854775808 <= __copy_from_user_nocheck_#t~ret1210 && __copy_from_user_nocheck_#t~ret1210 <= 9223372036854775807;__copy_from_user_nocheck_~tmp___0~25 := __copy_from_user_nocheck_#t~ret1210;havoc __copy_from_user_nocheck_#t~ret1210; [2021-11-06 20:58:15,538 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L20889-10: __copy_from_user_nocheck_#t~ret1211 := ldv__builtin_expect_#res;assume -9223372036854775808 <= __copy_from_user_nocheck_#t~ret1211 && __copy_from_user_nocheck_#t~ret1211 <= 9223372036854775807;__copy_from_user_nocheck_~tmp___1~14 := __copy_from_user_nocheck_#t~ret1211;havoc __copy_from_user_nocheck_#t~ret1211; [2021-11-06 20:58:15,538 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L20889-13: __copy_to_user_nocheck_#t~ret1215 := ldv__builtin_expect_#res;assume -9223372036854775808 <= __copy_to_user_nocheck_#t~ret1215 && __copy_to_user_nocheck_#t~ret1215 <= 9223372036854775807;__copy_to_user_nocheck_~tmp___0~26 := __copy_to_user_nocheck_#t~ret1215;havoc __copy_to_user_nocheck_#t~ret1215; [2021-11-06 20:58:15,538 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L20889-14: __copy_to_user_nocheck_#t~ret1216 := ldv__builtin_expect_#res;assume -9223372036854775808 <= __copy_to_user_nocheck_#t~ret1216 && __copy_to_user_nocheck_#t~ret1216 <= 9223372036854775807;__copy_to_user_nocheck_~tmp___1~15 := __copy_to_user_nocheck_#t~ret1216;havoc __copy_to_user_nocheck_#t~ret1216; [2021-11-06 20:58:15,538 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:58:15,567 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:58:15,567 INFO L299 CfgBuilder]: Removed 5897 assume(true) statements. [2021-11-06 20:58:15,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:58:15 BoogieIcfgContainer [2021-11-06 20:58:15,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:58:15,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:58:15,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:58:15,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:58:15,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:53:22" (1/3) ... [2021-11-06 20:58:15,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6fb493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:58:15, skipping insertion in model container [2021-11-06 20:58:15,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:53:27" (2/3) ... [2021-11-06 20:58:15,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6fb493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:58:15, skipping insertion in model container [2021-11-06 20:58:15,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:58:15" (3/3) ... [2021-11-06 20:58:15,584 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-uvc-uvcvideo.cil.i [2021-11-06 20:58:15,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:58:15,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-06 20:58:15,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:58:15,636 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=PETRI_NET, 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 [2021-11-06 20:58:15,636 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-06 20:58:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 7128 states, 7118 states have (on average 1.3818488339421187) internal successors, (9836), 7127 states have internal predecessors, (9836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:15,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 20:58:15,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:58:15,718 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:58:15,719 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:58:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:58:15,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1897720244, now seen corresponding path program 1 times [2021-11-06 20:58:15,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:58:15,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525726531] [2021-11-06 20:58:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:58:15,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:58:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:58:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:58:16,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:58:16,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525726531] [2021-11-06 20:58:16,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525726531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:58:16,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:58:16,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:58:16,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169154123] [2021-11-06 20:58:16,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:58:16,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:58:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:58:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:58:16,860 INFO L87 Difference]: Start difference. First operand has 7128 states, 7118 states have (on average 1.3818488339421187) internal successors, (9836), 7127 states have internal predecessors, (9836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:19,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:58:19,857 INFO L93 Difference]: Finished difference Result 20567 states and 28458 transitions. [2021-11-06 20:58:19,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:58:19,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-06 20:58:19,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:58:19,917 INFO L225 Difference]: With dead ends: 20567 [2021-11-06 20:58:19,917 INFO L226 Difference]: Without dead ends: 13175 [2021-11-06 20:58:19,938 INFO L786 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 [2021-11-06 20:58:19,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13175 states. [2021-11-06 20:58:20,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13175 to 13161. [2021-11-06 20:58:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13161 states, 13151 states have (on average 1.3478822903201277) internal successors, (17726), 13160 states have internal predecessors, (17726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13161 states to 13161 states and 17726 transitions. [2021-11-06 20:58:20,254 INFO L78 Accepts]: Start accepts. Automaton has 13161 states and 17726 transitions. Word has length 112 [2021-11-06 20:58:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:58:20,254 INFO L470 AbstractCegarLoop]: Abstraction has 13161 states and 17726 transitions. [2021-11-06 20:58:20,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 13161 states and 17726 transitions. [2021-11-06 20:58:20,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-06 20:58:20,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:58:20,263 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:58:20,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:58:20,263 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:58:20,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:58:20,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1918343768, now seen corresponding path program 1 times [2021-11-06 20:58:20,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:58:20,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986684506] [2021-11-06 20:58:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:58:20,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:58:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:58:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:58:21,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:58:21,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986684506] [2021-11-06 20:58:21,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986684506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:58:21,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:58:21,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:58:21,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888642984] [2021-11-06 20:58:21,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:58:21,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:58:21,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:58:21,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:58:21,027 INFO L87 Difference]: Start difference. First operand 13161 states and 17726 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:58:23,940 INFO L93 Difference]: Finished difference Result 29439 states and 39639 transitions. [2021-11-06 20:58:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:58:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-06 20:58:23,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:58:24,006 INFO L225 Difference]: With dead ends: 29439 [2021-11-06 20:58:24,006 INFO L226 Difference]: Without dead ends: 16530 [2021-11-06 20:58:24,030 INFO L786 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 [2021-11-06 20:58:24,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16530 states. [2021-11-06 20:58:24,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16530 to 16490. [2021-11-06 20:58:24,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16490 states, 16480 states have (on average 1.3431432038834952) internal successors, (22135), 16489 states have internal predecessors, (22135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16490 states to 16490 states and 22135 transitions. [2021-11-06 20:58:24,365 INFO L78 Accepts]: Start accepts. Automaton has 16490 states and 22135 transitions. Word has length 136 [2021-11-06 20:58:24,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:58:24,367 INFO L470 AbstractCegarLoop]: Abstraction has 16490 states and 22135 transitions. [2021-11-06 20:58:24,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:24,368 INFO L276 IsEmpty]: Start isEmpty. Operand 16490 states and 22135 transitions. [2021-11-06 20:58:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-06 20:58:24,375 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:58:24,376 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 20:58:24,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:58:24,377 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:58:24,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:58:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash -93805013, now seen corresponding path program 1 times [2021-11-06 20:58:24,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:58:24,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624812605] [2021-11-06 20:58:24,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:58:24,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:58:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:58:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:58:24,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:58:24,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624812605] [2021-11-06 20:58:24,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624812605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:58:24,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:58:24,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:58:24,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900498209] [2021-11-06 20:58:24,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:58:24,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:58:24,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:58:24,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:58:24,923 INFO L87 Difference]: Start difference. First operand 16490 states and 22135 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:27,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:58:27,618 INFO L93 Difference]: Finished difference Result 34560 states and 46390 transitions. [2021-11-06 20:58:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:58:27,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-06 20:58:27,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:58:27,657 INFO L225 Difference]: With dead ends: 34560 [2021-11-06 20:58:27,657 INFO L226 Difference]: Without dead ends: 18322 [2021-11-06 20:58:27,684 INFO L786 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 [2021-11-06 20:58:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18322 states. [2021-11-06 20:58:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18322 to 18282. [2021-11-06 20:58:27,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18282 states, 18272 states have (on average 1.3406852014010509) internal successors, (24497), 18281 states have internal predecessors, (24497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18282 states to 18282 states and 24497 transitions. [2021-11-06 20:58:28,014 INFO L78 Accepts]: Start accepts. Automaton has 18282 states and 24497 transitions. Word has length 153 [2021-11-06 20:58:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:58:28,015 INFO L470 AbstractCegarLoop]: Abstraction has 18282 states and 24497 transitions. [2021-11-06 20:58:28,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:28,015 INFO L276 IsEmpty]: Start isEmpty. Operand 18282 states and 24497 transitions. [2021-11-06 20:58:28,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-06 20:58:28,020 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:58:28,020 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 20:58:28,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:58:28,021 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:58:28,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:58:28,021 INFO L85 PathProgramCache]: Analyzing trace with hash 947510081, now seen corresponding path program 1 times [2021-11-06 20:58:28,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:58:28,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827990075] [2021-11-06 20:58:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:58:28,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:58:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:58:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:58:28,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:58:28,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827990075] [2021-11-06 20:58:28,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827990075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:58:28,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:58:28,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 20:58:28,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828952505] [2021-11-06 20:58:28,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 20:58:28,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:58:28,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 20:58:28,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 20:58:28,683 INFO L87 Difference]: Start difference. First operand 18282 states and 24497 transitions. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:58:30,316 INFO L93 Difference]: Finished difference Result 83594 states and 112361 transitions. [2021-11-06 20:58:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 20:58:30,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-06 20:58:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:58:30,487 INFO L225 Difference]: With dead ends: 83594 [2021-11-06 20:58:30,488 INFO L226 Difference]: Without dead ends: 67180 [2021-11-06 20:58:30,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-06 20:58:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67180 states. [2021-11-06 20:58:31,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67180 to 18298. [2021-11-06 20:58:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18298 states, 18288 states have (on average 1.3403871391076116) internal successors, (24513), 18297 states have internal predecessors, (24513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18298 states to 18298 states and 24513 transitions. [2021-11-06 20:58:31,275 INFO L78 Accepts]: Start accepts. Automaton has 18298 states and 24513 transitions. Word has length 163 [2021-11-06 20:58:31,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:58:31,275 INFO L470 AbstractCegarLoop]: Abstraction has 18298 states and 24513 transitions. [2021-11-06 20:58:31,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:31,275 INFO L276 IsEmpty]: Start isEmpty. Operand 18298 states and 24513 transitions. [2021-11-06 20:58:31,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-06 20:58:31,280 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:58:31,280 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 20:58:31,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:58:31,281 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:58:31,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:58:31,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1103473917, now seen corresponding path program 1 times [2021-11-06 20:58:31,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:58:31,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392713985] [2021-11-06 20:58:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:58:31,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:58:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:58:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:58:31,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:58:31,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392713985] [2021-11-06 20:58:31,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392713985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:58:31,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:58:31,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:58:31,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330892170] [2021-11-06 20:58:31,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:58:31,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:58:31,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:58:31,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:58:31,770 INFO L87 Difference]: Start difference. First operand 18298 states and 24513 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:35,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:58:35,049 INFO L93 Difference]: Finished difference Result 50728 states and 68220 transitions. [2021-11-06 20:58:35,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:58:35,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-06 20:58:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:58:35,143 INFO L225 Difference]: With dead ends: 50728 [2021-11-06 20:58:35,143 INFO L226 Difference]: Without dead ends: 34298 [2021-11-06 20:58:35,176 INFO L786 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 [2021-11-06 20:58:35,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34298 states. [2021-11-06 20:58:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34298 to 34284. [2021-11-06 20:58:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34284 states, 34274 states have (on average 1.3439633541459999) internal successors, (46063), 34283 states have internal predecessors, (46063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:35,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34284 states to 34284 states and 46063 transitions. [2021-11-06 20:58:35,851 INFO L78 Accepts]: Start accepts. Automaton has 34284 states and 46063 transitions. Word has length 163 [2021-11-06 20:58:35,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:58:35,851 INFO L470 AbstractCegarLoop]: Abstraction has 34284 states and 46063 transitions. [2021-11-06 20:58:35,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:35,852 INFO L276 IsEmpty]: Start isEmpty. Operand 34284 states and 46063 transitions. [2021-11-06 20:58:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-06 20:58:35,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:58:35,857 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 20:58:35,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:58:35,858 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:58:35,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:58:35,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2124542271, now seen corresponding path program 1 times [2021-11-06 20:58:35,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:58:35,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384202555] [2021-11-06 20:58:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:58:35,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:58:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:58:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:58:36,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:58:36,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384202555] [2021-11-06 20:58:36,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384202555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:58:36,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:58:36,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:58:36,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219569444] [2021-11-06 20:58:36,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:58:36,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:58:36,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:58:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:58:36,364 INFO L87 Difference]: Start difference. First operand 34284 states and 46063 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:39,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:58:39,916 INFO L93 Difference]: Finished difference Result 82704 states and 111328 transitions. [2021-11-06 20:58:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:58:39,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-06 20:58:39,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:58:40,020 INFO L225 Difference]: With dead ends: 82704 [2021-11-06 20:58:40,021 INFO L226 Difference]: Without dead ends: 50288 [2021-11-06 20:58:40,076 INFO L786 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 [2021-11-06 20:58:40,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50288 states. [2021-11-06 20:58:40,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50288 to 50223. [2021-11-06 20:58:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50223 states, 50213 states have (on average 1.3455877959890865) internal successors, (67566), 50222 states have internal predecessors, (67566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50223 states to 50223 states and 67566 transitions. [2021-11-06 20:58:41,124 INFO L78 Accepts]: Start accepts. Automaton has 50223 states and 67566 transitions. Word has length 163 [2021-11-06 20:58:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:58:41,124 INFO L470 AbstractCegarLoop]: Abstraction has 50223 states and 67566 transitions. [2021-11-06 20:58:41,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 50223 states and 67566 transitions. [2021-11-06 20:58:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-06 20:58:41,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:58:41,133 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:58:41,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 20:58:41,134 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:58:41,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:58:41,134 INFO L85 PathProgramCache]: Analyzing trace with hash -184250868, now seen corresponding path program 1 times [2021-11-06 20:58:41,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:58:41,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989731137] [2021-11-06 20:58:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:58:41,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:58:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:58:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-06 20:58:41,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:58:41,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989731137] [2021-11-06 20:58:41,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989731137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:58:41,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:58:41,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 20:58:41,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281446827] [2021-11-06 20:58:41,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:58:41,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:58:41,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:58:41,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:58:41,971 INFO L87 Difference]: Start difference. First operand 50223 states and 67566 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:44,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:58:44,159 INFO L93 Difference]: Finished difference Result 146927 states and 197849 transitions. [2021-11-06 20:58:44,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 20:58:44,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2021-11-06 20:58:44,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:58:44,354 INFO L225 Difference]: With dead ends: 146927 [2021-11-06 20:58:44,355 INFO L226 Difference]: Without dead ends: 96820 [2021-11-06 20:58:44,422 INFO L786 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 [2021-11-06 20:58:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96820 states. [2021-11-06 20:58:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96820 to 96800. [2021-11-06 20:58:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96800 states, 96790 states have (on average 1.3465647277611323) internal successors, (130334), 96799 states have internal predecessors, (130334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:46,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96800 states to 96800 states and 130334 transitions. [2021-11-06 20:58:46,879 INFO L78 Accepts]: Start accepts. Automaton has 96800 states and 130334 transitions. Word has length 173 [2021-11-06 20:58:46,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:58:46,880 INFO L470 AbstractCegarLoop]: Abstraction has 96800 states and 130334 transitions. [2021-11-06 20:58:46,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:46,880 INFO L276 IsEmpty]: Start isEmpty. Operand 96800 states and 130334 transitions. [2021-11-06 20:58:47,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-06 20:58:47,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:58:47,061 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 20:58:47,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 20:58:47,061 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:58:47,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:58:47,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1032891876, now seen corresponding path program 1 times [2021-11-06 20:58:47,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:58:47,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378920242] [2021-11-06 20:58:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:58:47,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:58:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:58:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 20:58:47,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:58:47,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378920242] [2021-11-06 20:58:47,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378920242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:58:47,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:58:47,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:58:47,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065214174] [2021-11-06 20:58:47,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:58:47,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:58:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:58:47,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:58:47,767 INFO L87 Difference]: Start difference. First operand 96800 states and 130334 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:58:52,919 INFO L93 Difference]: Finished difference Result 211504 states and 284536 transitions. [2021-11-06 20:58:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:58:52,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2021-11-06 20:58:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:58:53,271 INFO L225 Difference]: With dead ends: 211504 [2021-11-06 20:58:53,271 INFO L226 Difference]: Without dead ends: 116572 [2021-11-06 20:58:53,374 INFO L786 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 [2021-11-06 20:58:53,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116572 states. [2021-11-06 20:58:56,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116572 to 116494. [2021-11-06 20:58:56,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116494 states, 116484 states have (on average 1.3429226331513342) internal successors, (156429), 116493 states have internal predecessors, (156429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116494 states to 116494 states and 156429 transitions. [2021-11-06 20:58:56,365 INFO L78 Accepts]: Start accepts. Automaton has 116494 states and 156429 transitions. Word has length 207 [2021-11-06 20:58:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:58:56,365 INFO L470 AbstractCegarLoop]: Abstraction has 116494 states and 156429 transitions. [2021-11-06 20:58:56,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 116494 states and 156429 transitions. [2021-11-06 20:58:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-06 20:58:56,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:58:56,392 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 20:58:56,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 20:58:56,392 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:58:56,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:58:56,393 INFO L85 PathProgramCache]: Analyzing trace with hash -872159349, now seen corresponding path program 1 times [2021-11-06 20:58:56,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:58:56,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838146083] [2021-11-06 20:58:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:58:56,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:58:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:58:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 20:58:57,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:58:57,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838146083] [2021-11-06 20:58:57,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838146083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:58:57,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:58:57,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 20:58:57,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638331002] [2021-11-06 20:58:57,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:58:57,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:58:57,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:58:57,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:58:57,415 INFO L87 Difference]: Start difference. First operand 116494 states and 156429 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:59:02,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:59:02,106 INFO L93 Difference]: Finished difference Result 231144 states and 310435 transitions. [2021-11-06 20:59:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 20:59:02,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2021-11-06 20:59:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:59:02,613 INFO L225 Difference]: With dead ends: 231144 [2021-11-06 20:59:02,613 INFO L226 Difference]: Without dead ends: 231142 [2021-11-06 20:59:02,685 INFO L786 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 [2021-11-06 20:59:02,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231142 states. [2021-11-06 20:59:06,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231142 to 116494. [2021-11-06 20:59:06,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116494 states, 116484 states have (on average 1.3428711239311837) internal successors, (156423), 116493 states have internal predecessors, (156423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:59:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116494 states to 116494 states and 156423 transitions. [2021-11-06 20:59:06,618 INFO L78 Accepts]: Start accepts. Automaton has 116494 states and 156423 transitions. Word has length 227 [2021-11-06 20:59:06,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:59:06,618 INFO L470 AbstractCegarLoop]: Abstraction has 116494 states and 156423 transitions. [2021-11-06 20:59:06,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:59:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand 116494 states and 156423 transitions. [2021-11-06 20:59:06,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-06 20:59:06,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:59:06,654 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:59:06,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 20:59:06,654 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:59:06,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:59:06,654 INFO L85 PathProgramCache]: Analyzing trace with hash 737468312, now seen corresponding path program 1 times [2021-11-06 20:59:06,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:59:06,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032638333] [2021-11-06 20:59:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:59:06,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:59:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:59:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 20:59:07,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:59:07,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032638333] [2021-11-06 20:59:07,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032638333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:59:07,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:59:07,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 20:59:07,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800809426] [2021-11-06 20:59:07,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:59:07,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:59:07,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:59:07,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:59:07,408 INFO L87 Difference]: Start difference. First operand 116494 states and 156423 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)