./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.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 2753d752216607180728226381b5a5c2bb1273cd3c02dbf53b55cd0db95c4306 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:34:30,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:34:30,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:34:30,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:34:30,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:34:30,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:34:30,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:34:30,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:34:30,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:34:30,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:34:30,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:34:30,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:34:30,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:34:30,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:34:30,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:34:30,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:34:30,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:34:30,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:34:30,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:34:30,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:34:30,903 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:34:30,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:34:30,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:34:30,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:34:30,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:34:30,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:34:30,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:34:30,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:34:30,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:34:30,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:34:30,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:34:30,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:34:30,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:34:30,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:34:30,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:34:30,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:34:30,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:34:30,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:34:30,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:34:30,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:34:30,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:34:30,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:34:30,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 12:34:30,959 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:34:30,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:34:30,960 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:34:30,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:34:30,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:34:30,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:34:30,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:34:30,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:34:30,962 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:34:30,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:34:30,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 12:34:30,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:34:30,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:34:30,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:34:30,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:34:30,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:34:30,971 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:34:30,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:34:30,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:34:30,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:34:30,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:34:30,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:34:30,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:34:30,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:34:30,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:34:30,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 12:34:30,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 12:34:30,973 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:34:30,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:34:30,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:34:30,974 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2753d752216607180728226381b5a5c2bb1273cd3c02dbf53b55cd0db95c4306 [2022-07-21 12:34:31,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:34:31,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:34:31,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:34:31,328 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:34:31,330 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:34:31,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2022-07-21 12:34:31,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/886a1578b/78130a997a4041c68a981157bcc64493/FLAG925ca70f1 [2022-07-21 12:34:32,221 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:34:32,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2022-07-21 12:34:32,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/886a1578b/78130a997a4041c68a981157bcc64493/FLAG925ca70f1 [2022-07-21 12:34:32,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/886a1578b/78130a997a4041c68a981157bcc64493 [2022-07-21 12:34:32,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:34:32,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:34:32,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:34:32,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:34:32,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:34:32,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:34:32" (1/1) ... [2022-07-21 12:34:32,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432d2c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:32, skipping insertion in model container [2022-07-21 12:34:32,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:34:32" (1/1) ... [2022-07-21 12:34:32,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:34:32,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:34:35,036 WARN L230 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i[277173,277186] [2022-07-21 12:34:35,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:34:35,274 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:34:35,448 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckException: Type check failed for C: hc_fminterval = hc_fminterval & 16383U [7308] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckBinaryExpression(TypeCheckHelper.java:207) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.constructBinaryExpression(ExpressionFactory.java:597) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.newBinaryExpression(ExpressionFactory.java:132) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:483) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 12:34:35,453 INFO L158 Benchmark]: Toolchain (without parser) took 2719.79ms. Allocated memory was 56.6MB in the beginning and 113.2MB in the end (delta: 56.6MB). Free memory was 33.8MB in the beginning and 47.6MB in the end (delta: -13.8MB). Peak memory consumption was 53.8MB. Max. memory is 16.1GB. [2022-07-21 12:34:35,453 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 56.6MB. Free memory was 38.5MB in the beginning and 38.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 12:34:35,454 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2718.20ms. Allocated memory was 56.6MB in the beginning and 113.2MB in the end (delta: 56.6MB). Free memory was 33.7MB in the beginning and 47.6MB in the end (delta: -13.9MB). Peak memory consumption was 53.8MB. Max. memory is 16.1GB. [2022-07-21 12:34:35,455 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 56.6MB. Free memory was 38.5MB in the beginning and 38.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2718.20ms. Allocated memory was 56.6MB in the beginning and 113.2MB in the end (delta: 56.6MB). Free memory was 33.7MB in the beginning and 47.6MB in the end (delta: -13.9MB). Peak memory consumption was 53.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: hc_fminterval = hc_fminterval & 16383U [7308] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: hc_fminterval = hc_fminterval & 16383U [7308]: de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 2753d752216607180728226381b5a5c2bb1273cd3c02dbf53b55cd0db95c4306 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:34:37,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:34:37,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:34:37,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:34:37,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:34:37,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:34:37,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:34:37,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:34:37,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:34:37,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:34:37,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:34:37,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:34:37,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:34:37,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:34:37,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:34:37,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:34:37,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:34:37,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:34:37,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:34:37,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:34:37,216 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:34:37,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:34:37,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:34:37,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:34:37,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:34:37,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:34:37,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:34:37,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:34:37,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:34:37,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:34:37,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:34:37,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:34:37,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:34:37,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:34:37,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:34:37,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:34:37,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:34:37,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:34:37,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:34:37,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:34:37,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:34:37,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:34:37,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 12:34:37,272 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:34:37,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:34:37,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:34:37,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:34:37,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:34:37,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:34:37,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:34:37,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:34:37,275 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:34:37,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:34:37,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:34:37,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:34:37,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:34:37,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:34:37,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 12:34:37,282 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 12:34:37,283 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 12:34:37,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:34:37,283 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:34:37,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:34:37,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:34:37,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:34:37,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:34:37,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:34:37,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:34:37,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:34:37,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:34:37,285 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 12:34:37,285 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 12:34:37,285 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:34:37,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:34:37,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:34:37,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 12:34:37,286 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2753d752216607180728226381b5a5c2bb1273cd3c02dbf53b55cd0db95c4306 [2022-07-21 12:34:37,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:34:37,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:34:37,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:34:37,644 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:34:37,645 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:34:37,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2022-07-21 12:34:37,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/399f118ff/111ddf8abd124b88a50682bf4720518d/FLAGfc9796d20 [2022-07-21 12:34:38,535 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:34:38,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2022-07-21 12:34:38,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/399f118ff/111ddf8abd124b88a50682bf4720518d/FLAGfc9796d20 [2022-07-21 12:34:38,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/399f118ff/111ddf8abd124b88a50682bf4720518d [2022-07-21 12:34:38,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:34:38,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:34:38,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:34:38,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:34:38,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:34:38,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:34:38" (1/1) ... [2022-07-21 12:34:38,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0677a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:38, skipping insertion in model container [2022-07-21 12:34:38,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:34:38" (1/1) ... [2022-07-21 12:34:38,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:34:38,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:34:40,755 WARN L230 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i[277173,277186] [2022-07-21 12:34:40,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:34:40,966 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 12:34:41,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:34:41,290 WARN L230 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i[277173,277186] [2022-07-21 12:34:41,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:34:41,333 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:34:41,702 WARN L230 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i[277173,277186] [2022-07-21 12:34:41,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:34:41,845 INFO L208 MainTranslator]: Completed translation [2022-07-21 12:34:41,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:41 WrapperNode [2022-07-21 12:34:41,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 12:34:41,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 12:34:41,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 12:34:41,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 12:34:41,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:41" (1/1) ... [2022-07-21 12:34:41,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:41" (1/1) ... [2022-07-21 12:34:42,131 INFO L137 Inliner]: procedures = 394, calls = 3030, calls flagged for inlining = 180, calls inlined = 148, statements flattened = 6570 [2022-07-21 12:34:42,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 12:34:42,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 12:34:42,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 12:34:42,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 12:34:42,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:41" (1/1) ... [2022-07-21 12:34:42,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:41" (1/1) ... [2022-07-21 12:34:42,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:41" (1/1) ... [2022-07-21 12:34:42,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:41" (1/1) ... [2022-07-21 12:34:42,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:41" (1/1) ... [2022-07-21 12:34:42,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:41" (1/1) ... [2022-07-21 12:34:42,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:41" (1/1) ... [2022-07-21 12:34:42,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 12:34:42,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 12:34:42,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 12:34:42,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 12:34:42,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:41" (1/1) ... [2022-07-21 12:34:42,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:34:42,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:34:42,408 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) [2022-07-21 12:34:42,436 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 [2022-07-21 12:34:42,450 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-21 12:34:42,451 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-21 12:34:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 12:34:42,451 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 12:34:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_flush_input_fifo [2022-07-21 12:34:42,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_flush_input_fifo [2022-07-21 12:34:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 12:34:42,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 12:34:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-07-21 12:34:42,452 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-07-21 12:34:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-07-21 12:34:42,452 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-07-21 12:34:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-07-21 12:34:42,453 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-07-21 12:34:42,453 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_get_kref [2022-07-21 12:34:42,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_get_kref [2022-07-21 12:34:42,453 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-21 12:34:42,453 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2022-07-21 12:34:42,453 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2022-07-21 12:34:42,453 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_cancel_work [2022-07-21 12:34:42,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_cancel_work [2022-07-21 12:34:42,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ftdi_module_lock [2022-07-21 12:34:42,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ftdi_module_lock [2022-07-21 12:34:42,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 12:34:42,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 12:34:42,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 12:34:42,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 12:34:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-07-21 12:34:42,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-07-21 12:34:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 12:34:42,456 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 12:34:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_requeue_work [2022-07-21 12:34:42,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_requeue_work [2022-07-21 12:34:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_gone_away [2022-07-21 12:34:42,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_gone_away [2022-07-21 12:34:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_config [2022-07-21 12:34:42,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_config [2022-07-21 12:34:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_requeue_work [2022-07-21 12:34:42,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_requeue_work [2022-07-21 12:34:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-07-21 12:34:42,456 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-07-21 12:34:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_reg [2022-07-21 12:34:42,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_reg [2022-07-21 12:34:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_respond_queue_work [2022-07-21 12:34:42,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_respond_queue_work [2022-07-21 12:34:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-21 12:34:42,457 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-21 12:34:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_89 [2022-07-21 12:34:42,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_89 [2022-07-21 12:34:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_88 [2022-07-21 12:34:42,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_88 [2022-07-21 12:34:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_87 [2022-07-21 12:34:42,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_87 [2022-07-21 12:34:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-21 12:34:42,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-21 12:34:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_put_kref [2022-07-21 12:34:42,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_put_kref [2022-07-21 12:34:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_abandon_targets [2022-07-21 12:34:42,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_abandon_targets [2022-07-21 12:34:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 12:34:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_pcimem [2022-07-21 12:34:42,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_pcimem [2022-07-21 12:34:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-07-21 12:34:42,458 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-07-21 12:34:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_u132_lock_of_usb_ftdi [2022-07-21 12:34:42,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_u132_lock_of_usb_ftdi [2022-07-21 12:34:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 12:34:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-07-21 12:34:42,459 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-07-21 12:34:42,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 12:34:42,459 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_requeue_work [2022-07-21 12:34:42,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_requeue_work [2022-07-21 12:34:42,459 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 12:34:42,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 12:34:42,459 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_queue_work [2022-07-21 12:34:42,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_queue_work [2022-07-21 12:34:42,459 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-21 12:34:42,459 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-21 12:34:42,459 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_pcimem [2022-07-21 12:34:42,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_pcimem [2022-07-21 12:34:42,459 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-07-21 12:34:42,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-07-21 12:34:42,460 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-21 12:34:42,460 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-21 12:34:42,460 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-07-21 12:34:42,460 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-07-21 12:34:42,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 12:34:42,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 12:34:42,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 12:34:42,460 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-21 12:34:42,460 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-21 12:34:42,460 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-21 12:34:42,460 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-21 12:34:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-21 12:34:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-21 12:34:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 12:34:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 12:34:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_kick_command_queue [2022-07-21 12:34:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_kick_command_queue [2022-07-21 12:34:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 12:34:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 12:34:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 12:34:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-07-21 12:34:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-07-21 12:34:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_config [2022-07-21 12:34:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_config [2022-07-21 12:34:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-07-21 12:34:42,462 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-07-21 12:34:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_u132_lock_of_usb_ftdi [2022-07-21 12:34:42,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_u132_lock_of_usb_ftdi [2022-07-21 12:34:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 12:34:42,462 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 12:34:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-21 12:34:42,462 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-21 12:34:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 12:34:42,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 12:34:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-07-21 12:34:42,462 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-07-21 12:34:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 12:34:42,463 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 12:34:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-21 12:34:42,463 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-21 12:34:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_status_work [2022-07-21 12:34:42,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_status_work [2022-07-21 12:34:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_cancel_work [2022-07-21 12:34:42,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_cancel_work [2022-07-21 12:34:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 12:34:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-21 12:34:42,463 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-21 12:34:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure up [2022-07-21 12:34:42,463 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2022-07-21 12:34:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 12:34:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-07-21 12:34:42,464 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-07-21 12:34:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 12:34:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 12:34:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 12:34:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 12:34:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2022-07-21 12:34:42,464 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2022-07-21 12:34:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 12:34:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_cancel_work [2022-07-21 12:34:42,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_cancel_work [2022-07-21 12:34:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-21 12:34:42,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-21 12:34:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_do_callback [2022-07-21 12:34:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_do_callback [2022-07-21 12:34:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-21 12:34:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-21 12:34:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-07-21 12:34:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-07-21 12:34:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-07-21 12:34:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-07-21 12:34:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-21 12:34:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-21 12:34:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_found_controller [2022-07-21 12:34:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_found_controller [2022-07-21 12:34:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_setup_controller [2022-07-21 12:34:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_setup_controller [2022-07-21 12:34:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_respond_work [2022-07-21 12:34:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_respond_work [2022-07-21 12:34:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-21 12:34:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-21 12:34:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-07-21 12:34:42,466 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-07-21 12:34:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_disconnect [2022-07-21 12:34:42,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_disconnect [2022-07-21 12:34:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write [2022-07-21 12:34:42,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write [2022-07-21 12:34:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-21 12:34:42,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-21 12:34:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_abandon_completions [2022-07-21 12:34:42,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_abandon_completions [2022-07-21 12:34:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-07-21 12:34:42,466 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-07-21 12:34:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 12:34:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 12:34:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 12:34:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 12:34:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 12:34:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_command_work [2022-07-21 12:34:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_command_work [2022-07-21 12:34:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-21 12:34:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-21 12:34:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-07-21 12:34:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-07-21 12:34:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-07-21 12:34:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-07-21 12:34:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-07-21 12:34:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-07-21 12:34:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-21 12:34:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-21 12:34:42,468 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_reg [2022-07-21 12:34:42,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_reg [2022-07-21 12:34:42,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ftdi_module_lock [2022-07-21 12:34:42,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ftdi_module_lock [2022-07-21 12:34:43,152 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 12:34:43,155 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 12:35:05,425 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 12:36:00,182 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 12:36:00,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 12:36:00,206 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 12:36:00,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:36:00 BoogieIcfgContainer [2022-07-21 12:36:00,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 12:36:00,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 12:36:00,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 12:36:00,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 12:36:00,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:34:38" (1/3) ... [2022-07-21 12:36:00,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbde497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:36:00, skipping insertion in model container [2022-07-21 12:36:00,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:34:41" (2/3) ... [2022-07-21 12:36:00,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbde497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:36:00, skipping insertion in model container [2022-07-21 12:36:00,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:36:00" (3/3) ... [2022-07-21 12:36:00,219 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2022-07-21 12:36:00,231 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 12:36:00,232 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 12:36:00,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 12:36:00,328 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3718bc4d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2689c702 [2022-07-21 12:36:00,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 12:36:00,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 1674 states, 1126 states have (on average 1.3996447602131439) internal successors, (1576), 1179 states have internal predecessors, (1576), 461 states have call successors, (461), 86 states have call predecessors, (461), 85 states have return successors, (454), 445 states have call predecessors, (454), 454 states have call successors, (454) [2022-07-21 12:36:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 12:36:00,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:00,359 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:36:00,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:00,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:00,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1015355331, now seen corresponding path program 1 times [2022-07-21 12:36:00,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:00,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442613128] [2022-07-21 12:36:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:36:00,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:00,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:00,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:36:00,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 12:36:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:01,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1614 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 12:36:01,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-21 12:36:01,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:36:01,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:01,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442613128] [2022-07-21 12:36:01,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442613128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:36:01,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:36:01,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:36:01,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653306364] [2022-07-21 12:36:01,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:36:01,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 12:36:01,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:01,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 12:36:01,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 12:36:01,915 INFO L87 Difference]: Start difference. First operand has 1674 states, 1126 states have (on average 1.3996447602131439) internal successors, (1576), 1179 states have internal predecessors, (1576), 461 states have call successors, (461), 86 states have call predecessors, (461), 85 states have return successors, (454), 445 states have call predecessors, (454), 454 states have call successors, (454) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 12:36:02,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:02,098 INFO L93 Difference]: Finished difference Result 3343 states and 5205 transitions. [2022-07-21 12:36:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 12:36:02,100 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2022-07-21 12:36:02,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:02,127 INFO L225 Difference]: With dead ends: 3343 [2022-07-21 12:36:02,127 INFO L226 Difference]: Without dead ends: 1660 [2022-07-21 12:36:02,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 12:36:02,155 INFO L413 NwaCegarLoop]: 2479 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:36:02,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:36:02,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2022-07-21 12:36:02,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1660. [2022-07-21 12:36:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1121 states have (on average 1.392506690454951) internal successors, (1561), 1165 states have internal predecessors, (1561), 454 states have call successors, (454), 85 states have call predecessors, (454), 84 states have return successors, (445), 436 states have call predecessors, (445), 445 states have call successors, (445) [2022-07-21 12:36:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2460 transitions. [2022-07-21 12:36:02,350 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2460 transitions. Word has length 135 [2022-07-21 12:36:02,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:02,351 INFO L495 AbstractCegarLoop]: Abstraction has 1660 states and 2460 transitions. [2022-07-21 12:36:02,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 12:36:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2460 transitions. [2022-07-21 12:36:02,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 12:36:02,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:02,356 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:36:02,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 12:36:02,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:02,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:02,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1914785415, now seen corresponding path program 1 times [2022-07-21 12:36:02,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:02,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936391681] [2022-07-21 12:36:02,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:36:02,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:02,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:02,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:36:02,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 12:36:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:04,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1614 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 12:36:04,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-21 12:36:04,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:36:04,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:04,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936391681] [2022-07-21 12:36:04,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936391681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:36:04,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:36:04,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:36:04,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159716075] [2022-07-21 12:36:04,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:36:04,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 12:36:04,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:04,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 12:36:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 12:36:04,331 INFO L87 Difference]: Start difference. First operand 1660 states and 2460 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 12:36:04,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:04,658 INFO L93 Difference]: Finished difference Result 3310 states and 4908 transitions. [2022-07-21 12:36:04,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 12:36:04,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 135 [2022-07-21 12:36:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:04,672 INFO L225 Difference]: With dead ends: 3310 [2022-07-21 12:36:04,672 INFO L226 Difference]: Without dead ends: 1661 [2022-07-21 12:36:04,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:36:04,684 INFO L413 NwaCegarLoop]: 2458 mSDtfsCounter, 3 mSDsluCounter, 4907 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7365 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:36:04,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7365 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:36:04,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2022-07-21 12:36:04,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1661. [2022-07-21 12:36:04,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1122 states have (on average 1.392156862745098) internal successors, (1562), 1166 states have internal predecessors, (1562), 454 states have call successors, (454), 85 states have call predecessors, (454), 84 states have return successors, (445), 436 states have call predecessors, (445), 445 states have call successors, (445) [2022-07-21 12:36:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2461 transitions. [2022-07-21 12:36:04,747 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2461 transitions. Word has length 135 [2022-07-21 12:36:04,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:04,748 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 2461 transitions. [2022-07-21 12:36:04,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 12:36:04,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2461 transitions. [2022-07-21 12:36:04,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 12:36:04,751 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:04,752 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:36:04,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 12:36:04,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:04,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:04,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:04,968 INFO L85 PathProgramCache]: Analyzing trace with hash 914592341, now seen corresponding path program 1 times [2022-07-21 12:36:04,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:04,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855827548] [2022-07-21 12:36:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:36:04,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:04,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:04,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:36:04,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 12:36:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:06,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 12:36:06,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-21 12:36:06,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:36:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-21 12:36:07,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:07,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855827548] [2022-07-21 12:36:07,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855827548] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:36:07,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:36:07,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-21 12:36:07,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390842273] [2022-07-21 12:36:07,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:36:07,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 12:36:07,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:07,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 12:36:07,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:36:07,557 INFO L87 Difference]: Start difference. First operand 1661 states and 2461 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:36:08,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:08,796 INFO L93 Difference]: Finished difference Result 3321 states and 4925 transitions. [2022-07-21 12:36:08,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 12:36:08,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2022-07-21 12:36:08,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:08,810 INFO L225 Difference]: With dead ends: 3321 [2022-07-21 12:36:08,810 INFO L226 Difference]: Without dead ends: 1671 [2022-07-21 12:36:08,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-07-21 12:36:08,829 INFO L413 NwaCegarLoop]: 2457 mSDtfsCounter, 12 mSDsluCounter, 12264 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14721 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:36:08,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 14721 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 12:36:08,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2022-07-21 12:36:08,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1671. [2022-07-21 12:36:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1131 states have (on average 1.391688770999116) internal successors, (1574), 1175 states have internal predecessors, (1574), 454 states have call successors, (454), 86 states have call predecessors, (454), 85 states have return successors, (445), 436 states have call predecessors, (445), 445 states have call successors, (445) [2022-07-21 12:36:08,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2473 transitions. [2022-07-21 12:36:08,894 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2473 transitions. Word has length 139 [2022-07-21 12:36:08,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:08,898 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 2473 transitions. [2022-07-21 12:36:08,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:36:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2473 transitions. [2022-07-21 12:36:08,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 12:36:08,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:08,901 INFO L195 NwaCegarLoop]: trace histogram [14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:36:08,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 12:36:09,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:09,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:09,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:09,124 INFO L85 PathProgramCache]: Analyzing trace with hash -58419911, now seen corresponding path program 2 times [2022-07-21 12:36:09,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:09,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112113511] [2022-07-21 12:36:09,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:36:09,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:09,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:09,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:36:09,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 12:36:10,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:36:10,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:36:10,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:36:10,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:10,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-21 12:36:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2022-07-21 12:36:10,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:36:10,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:10,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112113511] [2022-07-21 12:36:10,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112113511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:36:10,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:36:10,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:36:10,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619059826] [2022-07-21 12:36:10,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:36:10,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:36:10,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:10,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:36:10,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:36:10,545 INFO L87 Difference]: Start difference. First operand 1671 states and 2473 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 12:36:12,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:14,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:19,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:22,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:24,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:26,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:28,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:31,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:32,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:34,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:36,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:38,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:40,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:42,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:44,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:46,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:48,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:49,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:52,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:55,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:57,931 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:59,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:03,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:04,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:07,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:09,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:11,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:13,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:15,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:16,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:19,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:21,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:23,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:26,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:28,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:30,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:32,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:34,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:36,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:38,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:40,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:42,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:44,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:46,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:48,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:51,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:53,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:54,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:56,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:37:58,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:38:00,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:38:09,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:38:10,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:10,660 INFO L93 Difference]: Finished difference Result 3278 states and 4925 transitions. [2022-07-21 12:38:10,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 12:38:10,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 149 [2022-07-21 12:38:10,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:10,672 INFO L225 Difference]: With dead ends: 3278 [2022-07-21 12:38:10,672 INFO L226 Difference]: Without dead ends: 1647 [2022-07-21 12:38:10,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:38:10,686 INFO L413 NwaCegarLoop]: 2377 mSDtfsCounter, 24 mSDsluCounter, 6580 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 4 mSolverCounterUnsat, 36 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 8957 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 36 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.9s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:10,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 8957 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 565 Invalid, 36 Unknown, 0 Unchecked, 119.9s Time] [2022-07-21 12:38:10,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2022-07-21 12:38:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1628. [2022-07-21 12:38:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1103 states have (on average 1.388032638259293) internal successors, (1531), 1147 states have internal predecessors, (1531), 439 states have call successors, (439), 86 states have call predecessors, (439), 85 states have return successors, (430), 421 states have call predecessors, (430), 430 states have call successors, (430) [2022-07-21 12:38:10,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2400 transitions. [2022-07-21 12:38:10,738 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2400 transitions. Word has length 149 [2022-07-21 12:38:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:10,739 INFO L495 AbstractCegarLoop]: Abstraction has 1628 states and 2400 transitions. [2022-07-21 12:38:10,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 12:38:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2400 transitions. [2022-07-21 12:38:10,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-21 12:38:10,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:10,742 INFO L195 NwaCegarLoop]: trace histogram [14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:10,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 12:38:10,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:10,964 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:10,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1109194293, now seen corresponding path program 1 times [2022-07-21 12:38:10,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:10,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357499607] [2022-07-21 12:38:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:38:10,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:10,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:10,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:38:10,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 12:38:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:38:12,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 12:38:12,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 77 proven. 10 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-07-21 12:38:13,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:38:15,389 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-07-21 12:38:15,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:15,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357499607] [2022-07-21 12:38:15,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357499607] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:38:15,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:38:15,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-21 12:38:15,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005172954] [2022-07-21 12:38:15,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:38:15,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 12:38:15,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:15,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 12:38:15,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-21 12:38:15,392 INFO L87 Difference]: Start difference. First operand 1628 states and 2400 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:38:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:18,164 INFO L93 Difference]: Finished difference Result 3260 states and 4809 transitions. [2022-07-21 12:38:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 12:38:18,166 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2022-07-21 12:38:18,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:18,183 INFO L225 Difference]: With dead ends: 3260 [2022-07-21 12:38:18,184 INFO L226 Difference]: Without dead ends: 1640 [2022-07-21 12:38:18,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2022-07-21 12:38:18,195 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 52 mSDsluCounter, 11921 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 14309 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:18,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 14309 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 12:38:18,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2022-07-21 12:38:18,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1634. [2022-07-21 12:38:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1109 states have (on average 1.3868349864743013) internal successors, (1538), 1153 states have internal predecessors, (1538), 439 states have call successors, (439), 86 states have call predecessors, (439), 85 states have return successors, (430), 421 states have call predecessors, (430), 430 states have call successors, (430) [2022-07-21 12:38:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2407 transitions. [2022-07-21 12:38:18,258 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2407 transitions. Word has length 151 [2022-07-21 12:38:18,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:18,259 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2407 transitions. [2022-07-21 12:38:18,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:38:18,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2407 transitions. [2022-07-21 12:38:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-21 12:38:18,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:18,263 INFO L195 NwaCegarLoop]: trace histogram [26, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:18,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 12:38:18,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:18,484 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:18,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:18,484 INFO L85 PathProgramCache]: Analyzing trace with hash 806146123, now seen corresponding path program 2 times [2022-07-21 12:38:18,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:18,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999683710] [2022-07-21 12:38:18,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:38:18,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:18,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:18,486 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:38:18,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 12:38:19,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:38:19,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:38:19,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:38:19,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2022-07-21 12:38:19,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:38:19,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:19,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999683710] [2022-07-21 12:38:19,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999683710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:38:19,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:38:19,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:38:19,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006367400] [2022-07-21 12:38:19,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:38:19,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:38:19,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:19,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:38:19,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:19,869 INFO L87 Difference]: Start difference. First operand 1634 states and 2407 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 12:38:20,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:20,209 INFO L93 Difference]: Finished difference Result 4723 states and 7275 transitions. [2022-07-21 12:38:20,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:38:20,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 163 [2022-07-21 12:38:20,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:20,230 INFO L225 Difference]: With dead ends: 4723 [2022-07-21 12:38:20,231 INFO L226 Difference]: Without dead ends: 3135 [2022-07-21 12:38:20,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:20,248 INFO L413 NwaCegarLoop]: 2804 mSDtfsCounter, 2235 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2235 SdHoareTripleChecker+Valid, 5293 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:20,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2235 Valid, 5293 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:38:20,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2022-07-21 12:38:20,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 3116. [2022-07-21 12:38:20,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 2121 states have (on average 1.3927392739273927) internal successors, (2954), 2207 states have internal predecessors, (2954), 835 states have call successors, (835), 168 states have call predecessors, (835), 159 states have return successors, (956), 788 states have call predecessors, (956), 826 states have call successors, (956) [2022-07-21 12:38:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 4745 transitions. [2022-07-21 12:38:20,363 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 4745 transitions. Word has length 163 [2022-07-21 12:38:20,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:20,364 INFO L495 AbstractCegarLoop]: Abstraction has 3116 states and 4745 transitions. [2022-07-21 12:38:20,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 12:38:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 4745 transitions. [2022-07-21 12:38:20,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-21 12:38:20,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:20,368 INFO L195 NwaCegarLoop]: trace histogram [26, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:20,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 12:38:20,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:20,583 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:20,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:20,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1296385389, now seen corresponding path program 1 times [2022-07-21 12:38:20,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:20,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885425754] [2022-07-21 12:38:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:38:20,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:20,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:20,586 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:38:20,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 12:38:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:38:22,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 12:38:22,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 262 proven. 3 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2022-07-21 12:38:23,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:38:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 30 proven. 63 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-07-21 12:38:24,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:24,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885425754] [2022-07-21 12:38:24,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885425754] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:38:24,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:38:24,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-07-21 12:38:24,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402951857] [2022-07-21 12:38:24,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:38:24,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 12:38:24,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:24,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 12:38:24,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-21 12:38:24,302 INFO L87 Difference]: Start difference. First operand 3116 states and 4745 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 12:38:25,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:25,343 INFO L93 Difference]: Finished difference Result 6216 states and 9465 transitions. [2022-07-21 12:38:25,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 12:38:25,345 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 164 [2022-07-21 12:38:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:25,367 INFO L225 Difference]: With dead ends: 6216 [2022-07-21 12:38:25,368 INFO L226 Difference]: Without dead ends: 3116 [2022-07-21 12:38:25,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-21 12:38:25,387 INFO L413 NwaCegarLoop]: 2381 mSDtfsCounter, 20 mSDsluCounter, 11890 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 14271 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:25,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 14271 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 12:38:25,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2022-07-21 12:38:25,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 3116. [2022-07-21 12:38:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 2121 states have (on average 1.3908533710513908) internal successors, (2950), 2207 states have internal predecessors, (2950), 835 states have call successors, (835), 168 states have call predecessors, (835), 159 states have return successors, (956), 788 states have call predecessors, (956), 826 states have call successors, (956) [2022-07-21 12:38:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 4741 transitions. [2022-07-21 12:38:25,511 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 4741 transitions. Word has length 164 [2022-07-21 12:38:25,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:25,512 INFO L495 AbstractCegarLoop]: Abstraction has 3116 states and 4741 transitions. [2022-07-21 12:38:25,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 12:38:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 4741 transitions. [2022-07-21 12:38:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-21 12:38:25,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:25,517 INFO L195 NwaCegarLoop]: trace histogram [28, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:25,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-21 12:38:25,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:25,736 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:25,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:25,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1126223917, now seen corresponding path program 2 times [2022-07-21 12:38:25,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:25,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132009388] [2022-07-21 12:38:25,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:38:25,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:25,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:25,738 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:38:25,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 12:38:26,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:38:26,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:38:27,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:38:27,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2022-07-21 12:38:27,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:38:27,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:27,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132009388] [2022-07-21 12:38:27,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132009388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:38:27,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:38:27,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:38:27,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512901852] [2022-07-21 12:38:27,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:38:27,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:38:27,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:27,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:38:27,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:27,179 INFO L87 Difference]: Start difference. First operand 3116 states and 4741 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 12:38:27,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:27,532 INFO L93 Difference]: Finished difference Result 7764 states and 12276 transitions. [2022-07-21 12:38:27,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:38:27,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 166 [2022-07-21 12:38:27,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:27,569 INFO L225 Difference]: With dead ends: 7764 [2022-07-21 12:38:27,569 INFO L226 Difference]: Without dead ends: 4694 [2022-07-21 12:38:27,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:27,590 INFO L413 NwaCegarLoop]: 2805 mSDtfsCounter, 2361 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2361 SdHoareTripleChecker+Valid, 5298 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:27,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2361 Valid, 5298 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:38:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2022-07-21 12:38:27,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4675. [2022-07-21 12:38:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4675 states, 3180 states have (on average 1.389937106918239) internal successors, (4420), 3303 states have internal predecessors, (4420), 1252 states have call successors, (1252), 251 states have call predecessors, (1252), 242 states have return successors, (1597), 1195 states have call predecessors, (1597), 1243 states have call successors, (1597) [2022-07-21 12:38:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4675 states to 4675 states and 7269 transitions. [2022-07-21 12:38:27,821 INFO L78 Accepts]: Start accepts. Automaton has 4675 states and 7269 transitions. Word has length 166 [2022-07-21 12:38:27,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:27,821 INFO L495 AbstractCegarLoop]: Abstraction has 4675 states and 7269 transitions. [2022-07-21 12:38:27,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 12:38:27,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4675 states and 7269 transitions. [2022-07-21 12:38:27,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-21 12:38:27,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:27,825 INFO L195 NwaCegarLoop]: trace histogram [28, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:27,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 12:38:28,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:28,039 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:28,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:28,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1579180554, now seen corresponding path program 1 times [2022-07-21 12:38:28,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:28,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064336656] [2022-07-21 12:38:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:38:28,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:28,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:28,043 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:38:28,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 12:38:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:38:30,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:38:30,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2022-07-21 12:38:31,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:38:31,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:31,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064336656] [2022-07-21 12:38:31,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064336656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:38:31,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:38:31,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:38:31,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720881326] [2022-07-21 12:38:31,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:38:31,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:38:31,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:31,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:38:31,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:31,008 INFO L87 Difference]: Start difference. First operand 4675 states and 7269 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:38:31,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:31,380 INFO L93 Difference]: Finished difference Result 13431 states and 20925 transitions. [2022-07-21 12:38:31,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:38:31,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 166 [2022-07-21 12:38:31,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:31,453 INFO L225 Difference]: With dead ends: 13431 [2022-07-21 12:38:31,453 INFO L226 Difference]: Without dead ends: 8802 [2022-07-21 12:38:31,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:31,483 INFO L413 NwaCegarLoop]: 2856 mSDtfsCounter, 2171 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 5154 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:31,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 5154 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:38:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8802 states. [2022-07-21 12:38:31,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8802 to 8779. [2022-07-21 12:38:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8779 states, 5989 states have (on average 1.3983970612790115) internal successors, (8375), 6219 states have internal predecessors, (8375), 2325 states have call successors, (2325), 481 states have call predecessors, (2325), 464 states have return successors, (2981), 2223 states have call predecessors, (2981), 2316 states have call successors, (2981) [2022-07-21 12:38:31,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8779 states to 8779 states and 13681 transitions. [2022-07-21 12:38:31,906 INFO L78 Accepts]: Start accepts. Automaton has 8779 states and 13681 transitions. Word has length 166 [2022-07-21 12:38:31,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:31,907 INFO L495 AbstractCegarLoop]: Abstraction has 8779 states and 13681 transitions. [2022-07-21 12:38:31,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:38:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 8779 states and 13681 transitions. [2022-07-21 12:38:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 12:38:31,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:31,909 INFO L195 NwaCegarLoop]: trace histogram [28, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:31,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 12:38:32,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:32,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:32,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:32,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1337346782, now seen corresponding path program 1 times [2022-07-21 12:38:32,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:32,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707519512] [2022-07-21 12:38:32,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:38:32,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:32,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:32,128 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:38:32,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 12:38:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:38:35,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:38:35,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2022-07-21 12:38:35,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:38:35,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:35,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707519512] [2022-07-21 12:38:35,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707519512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:38:35,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:38:35,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:38:35,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531804212] [2022-07-21 12:38:35,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:38:35,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:38:35,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:35,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:38:35,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:35,240 INFO L87 Difference]: Start difference. First operand 8779 states and 13681 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 12:38:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:35,753 INFO L93 Difference]: Finished difference Result 20473 states and 33126 transitions. [2022-07-21 12:38:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:38:35,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 167 [2022-07-21 12:38:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:35,816 INFO L225 Difference]: With dead ends: 20473 [2022-07-21 12:38:35,816 INFO L226 Difference]: Without dead ends: 11740 [2022-07-21 12:38:35,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:35,873 INFO L413 NwaCegarLoop]: 2802 mSDtfsCounter, 2362 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 5295 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:35,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 5295 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:38:35,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11740 states. [2022-07-21 12:38:36,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11740 to 11721. [2022-07-21 12:38:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11721 states, 7995 states have (on average 1.396998123827392) internal successors, (11169), 8296 states have internal predecessors, (11169), 3101 states have call successors, (3101), 641 states have call predecessors, (3101), 624 states have return successors, (4296), 2980 states have call predecessors, (4296), 3092 states have call successors, (4296) [2022-07-21 12:38:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11721 states to 11721 states and 18566 transitions. [2022-07-21 12:38:36,461 INFO L78 Accepts]: Start accepts. Automaton has 11721 states and 18566 transitions. Word has length 167 [2022-07-21 12:38:36,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:36,462 INFO L495 AbstractCegarLoop]: Abstraction has 11721 states and 18566 transitions. [2022-07-21 12:38:36,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 12:38:36,462 INFO L276 IsEmpty]: Start isEmpty. Operand 11721 states and 18566 transitions. [2022-07-21 12:38:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-21 12:38:36,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:36,464 INFO L195 NwaCegarLoop]: trace histogram [28, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:36,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 12:38:36,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:36,683 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:36,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:36,684 INFO L85 PathProgramCache]: Analyzing trace with hash -69869020, now seen corresponding path program 1 times [2022-07-21 12:38:36,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:36,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364300503] [2022-07-21 12:38:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:38:36,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:36,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:36,687 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:38:36,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 12:38:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:38:39,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:38:39,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2022-07-21 12:38:40,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:38:40,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:40,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364300503] [2022-07-21 12:38:40,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364300503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:38:40,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:38:40,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:38:40,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927146236] [2022-07-21 12:38:40,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:38:40,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:38:40,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:40,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:38:40,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:40,140 INFO L87 Difference]: Start difference. First operand 11721 states and 18566 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 12:38:40,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:40,982 INFO L93 Difference]: Finished difference Result 26351 states and 43316 transitions. [2022-07-21 12:38:40,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:38:40,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 168 [2022-07-21 12:38:40,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:41,072 INFO L225 Difference]: With dead ends: 26351 [2022-07-21 12:38:41,072 INFO L226 Difference]: Without dead ends: 14676 [2022-07-21 12:38:41,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:41,163 INFO L413 NwaCegarLoop]: 2800 mSDtfsCounter, 2363 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2363 SdHoareTripleChecker+Valid, 5293 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:41,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2363 Valid, 5293 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:38:41,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14676 states. [2022-07-21 12:38:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14676 to 14657. [2022-07-21 12:38:41,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14657 states, 9999 states have (on average 1.395839583958396) internal successors, (13957), 10371 states have internal predecessors, (13957), 3873 states have call successors, (3873), 801 states have call predecessors, (3873), 784 states have return successors, (5587), 3733 states have call predecessors, (5587), 3864 states have call successors, (5587) [2022-07-21 12:38:41,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14657 states to 14657 states and 23417 transitions. [2022-07-21 12:38:41,872 INFO L78 Accepts]: Start accepts. Automaton has 14657 states and 23417 transitions. Word has length 168 [2022-07-21 12:38:41,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:41,873 INFO L495 AbstractCegarLoop]: Abstraction has 14657 states and 23417 transitions. [2022-07-21 12:38:41,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 12:38:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 14657 states and 23417 transitions. [2022-07-21 12:38:41,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-21 12:38:41,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:41,875 INFO L195 NwaCegarLoop]: trace histogram [28, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:41,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 12:38:42,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:42,092 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:42,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:42,092 INFO L85 PathProgramCache]: Analyzing trace with hash -69115209, now seen corresponding path program 1 times [2022-07-21 12:38:42,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:42,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534993480] [2022-07-21 12:38:42,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:38:42,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:42,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:42,098 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:38:42,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 12:38:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:38:45,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:38:45,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2022-07-21 12:38:48,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:38:48,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:48,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534993480] [2022-07-21 12:38:48,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534993480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:38:48,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:38:48,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:38:48,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548266543] [2022-07-21 12:38:48,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:38:48,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:38:48,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:48,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:38:48,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:48,234 INFO L87 Difference]: Start difference. First operand 14657 states and 23417 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 12:38:48,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:48,462 INFO L93 Difference]: Finished difference Result 14721 states and 23459 transitions. [2022-07-21 12:38:48,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:38:48,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 168 [2022-07-21 12:38:48,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:48,540 INFO L225 Difference]: With dead ends: 14721 [2022-07-21 12:38:48,540 INFO L226 Difference]: Without dead ends: 14717 [2022-07-21 12:38:48,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:48,555 INFO L413 NwaCegarLoop]: 2381 mSDtfsCounter, 2286 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2286 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:48,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2286 Valid, 2405 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:38:48,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14717 states. [2022-07-21 12:38:49,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14717 to 14715. [2022-07-21 12:38:49,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14715 states, 10039 states have (on average 1.3931666500647475) internal successors, (13986), 10409 states have internal predecessors, (13986), 3871 states have call successors, (3871), 821 states have call predecessors, (3871), 804 states have return successors, (5587), 3733 states have call predecessors, (5587), 3864 states have call successors, (5587) [2022-07-21 12:38:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14715 states to 14715 states and 23444 transitions. [2022-07-21 12:38:49,313 INFO L78 Accepts]: Start accepts. Automaton has 14715 states and 23444 transitions. Word has length 168 [2022-07-21 12:38:49,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:49,314 INFO L495 AbstractCegarLoop]: Abstraction has 14715 states and 23444 transitions. [2022-07-21 12:38:49,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 12:38:49,314 INFO L276 IsEmpty]: Start isEmpty. Operand 14715 states and 23444 transitions. [2022-07-21 12:38:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-21 12:38:49,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:49,317 INFO L195 NwaCegarLoop]: trace histogram [28, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:49,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 12:38:49,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:49,531 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:49,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:49,532 INFO L85 PathProgramCache]: Analyzing trace with hash -2143673234, now seen corresponding path program 1 times [2022-07-21 12:38:49,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:49,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855735272] [2022-07-21 12:38:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:38:49,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:49,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:49,535 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:38:49,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process