./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-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-43_2a-drivers--usb--serial--mos7840.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 c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 01:40:45,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 01:40:45,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 01:40:45,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 01:40:45,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 01:40:45,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 01:40:45,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 01:40:45,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 01:40:45,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 01:40:45,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 01:40:45,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 01:40:45,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 01:40:45,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 01:40:45,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 01:40:45,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 01:40:45,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 01:40:45,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 01:40:45,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 01:40:45,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 01:40:45,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 01:40:45,835 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 01:40:45,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 01:40:45,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 01:40:45,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 01:40:45,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 01:40:45,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 01:40:45,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 01:40:45,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 01:40:45,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 01:40:45,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 01:40:45,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 01:40:45,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 01:40:45,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 01:40:45,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 01:40:45,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 01:40:45,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 01:40:45,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 01:40:45,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 01:40:45,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 01:40:45,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 01:40:45,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 01:40:45,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 01:40:45,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 01:40:45,875 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 01:40:45,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 01:40:45,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 01:40:45,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 01:40:45,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 01:40:45,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 01:40:45,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 01:40:45,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 01:40:45,877 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 01:40:45,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 01:40:45,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 01:40:45,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 01:40:45,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 01:40:45,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 01:40:45,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 01:40:45,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 01:40:45,879 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 01:40:45,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 01:40:45,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 01:40:45,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 01:40:45,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 01:40:45,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:40:45,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 01:40:45,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 01:40:45,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 01:40:45,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 01:40:45,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 01:40:45,881 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 01:40:45,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 01:40:45,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 01:40:45,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2022-07-20 01:40:46,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 01:40:46,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 01:40:46,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 01:40:46,142 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 01:40:46,143 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 01:40:46,144 INFO L432 ainManager$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-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-07-20 01:40:46,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c48ceb711/0c0117d06e8643098360dc600db66fcd/FLAGb176015ec [2022-07-20 01:40:46,957 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 01:40:46,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-07-20 01:40:47,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c48ceb711/0c0117d06e8643098360dc600db66fcd/FLAGb176015ec [2022-07-20 01:40:47,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c48ceb711/0c0117d06e8643098360dc600db66fcd [2022-07-20 01:40:47,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 01:40:47,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 01:40:47,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 01:40:47,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 01:40:47,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 01:40:47,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:40:47" (1/1) ... [2022-07-20 01:40:47,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d00e01b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:47, skipping insertion in model container [2022-07-20 01:40:47,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:40:47" (1/1) ... [2022-07-20 01:40:47,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 01:40:47,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:40:48,889 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-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2022-07-20 01:40:48,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:40:48,982 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 01:40:49,168 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: Data = (unsigned int )Data & 65407U [5538] 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) [2022-07-20 01:40:49,177 INFO L158 Benchmark]: Toolchain (without parser) took 1981.68ms. Allocated memory was 92.3MB in the beginning and 184.5MB in the end (delta: 92.3MB). Free memory was 60.0MB in the beginning and 129.2MB in the end (delta: -69.2MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2022-07-20 01:40:49,178 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 75.5MB. Free memory was 56.6MB in the beginning and 56.5MB in the end (delta: 83.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 01:40:49,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1979.98ms. Allocated memory was 92.3MB in the beginning and 184.5MB in the end (delta: 92.3MB). Free memory was 59.8MB in the beginning and 129.2MB in the end (delta: -69.4MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2022-07-20 01:40:49,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 75.5MB. Free memory was 56.6MB in the beginning and 56.5MB in the end (delta: 83.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1979.98ms. Allocated memory was 92.3MB in the beginning and 184.5MB in the end (delta: 92.3MB). Free memory was 59.8MB in the beginning and 129.2MB in the end (delta: -69.4MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: Data = (unsigned int )Data & 65407U [5538] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: Data = (unsigned int )Data & 65407U [5538]: 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-43_2a-drivers--usb--serial--mos7840.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 c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 01:40:50,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 01:40:50,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 01:40:50,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 01:40:50,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 01:40:50,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 01:40:50,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 01:40:50,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 01:40:50,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 01:40:50,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 01:40:50,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 01:40:50,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 01:40:50,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 01:40:50,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 01:40:50,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 01:40:50,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 01:40:50,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 01:40:51,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 01:40:51,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 01:40:51,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 01:40:51,009 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 01:40:51,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 01:40:51,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 01:40:51,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 01:40:51,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 01:40:51,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 01:40:51,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 01:40:51,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 01:40:51,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 01:40:51,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 01:40:51,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 01:40:51,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 01:40:51,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 01:40:51,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 01:40:51,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 01:40:51,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 01:40:51,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 01:40:51,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 01:40:51,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 01:40:51,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 01:40:51,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 01:40:51,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 01:40:51,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-20 01:40:51,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 01:40:51,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 01:40:51,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 01:40:51,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 01:40:51,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 01:40:51,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 01:40:51,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 01:40:51,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 01:40:51,076 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 01:40:51,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 01:40:51,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 01:40:51,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 01:40:51,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 01:40:51,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 01:40:51,078 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 01:40:51,078 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 01:40:51,078 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 01:40:51,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 01:40:51,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 01:40:51,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 01:40:51,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 01:40:51,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 01:40:51,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 01:40:51,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:40:51,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 01:40:51,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 01:40:51,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 01:40:51,080 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 01:40:51,081 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 01:40:51,081 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 01:40:51,081 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 01:40:51,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 01:40:51,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 01:40:51,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2022-07-20 01:40:51,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 01:40:51,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 01:40:51,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 01:40:51,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 01:40:51,446 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 01:40:51,448 INFO L432 ainManager$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-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-07-20 01:40:51,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dc644eaa/a565cbc52b0048399d6ec2d2066bff2c/FLAGdff02bf41 [2022-07-20 01:40:52,296 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 01:40:52,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-07-20 01:40:52,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dc644eaa/a565cbc52b0048399d6ec2d2066bff2c/FLAGdff02bf41 [2022-07-20 01:40:52,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dc644eaa/a565cbc52b0048399d6ec2d2066bff2c [2022-07-20 01:40:52,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 01:40:52,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 01:40:52,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 01:40:52,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 01:40:52,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 01:40:52,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:40:52" (1/1) ... [2022-07-20 01:40:52,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a01e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:52, skipping insertion in model container [2022-07-20 01:40:52,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:40:52" (1/1) ... [2022-07-20 01:40:52,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 01:40:52,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:40:53,892 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-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2022-07-20 01:40:53,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:40:53,989 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 01:40:54,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:40:54,355 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-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2022-07-20 01:40:54,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:40:54,395 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 01:40:54,748 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-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2022-07-20 01:40:54,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:40:54,829 INFO L208 MainTranslator]: Completed translation [2022-07-20 01:40:54,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:54 WrapperNode [2022-07-20 01:40:54,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 01:40:54,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 01:40:54,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 01:40:54,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 01:40:54,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:54" (1/1) ... [2022-07-20 01:40:54,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:54" (1/1) ... [2022-07-20 01:40:55,149 INFO L137 Inliner]: procedures = 206, calls = 3778, calls flagged for inlining = 80, calls inlined = 67, statements flattened = 6598 [2022-07-20 01:40:55,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 01:40:55,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 01:40:55,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 01:40:55,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 01:40:55,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:54" (1/1) ... [2022-07-20 01:40:55,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:54" (1/1) ... [2022-07-20 01:40:55,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:54" (1/1) ... [2022-07-20 01:40:55,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:54" (1/1) ... [2022-07-20 01:40:55,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:54" (1/1) ... [2022-07-20 01:40:55,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:54" (1/1) ... [2022-07-20 01:40:55,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:54" (1/1) ... [2022-07-20 01:40:55,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 01:40:55,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 01:40:55,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 01:40:55,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 01:40:55,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:54" (1/1) ... [2022-07-20 01:40:55,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:40:55,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 01:40:55,466 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) [2022-07-20 01:40:55,495 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 [2022-07-20 01:40:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-20 01:40:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_reg_sync [2022-07-20 01:40:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_reg_sync [2022-07-20 01:40:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-20 01:40:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 01:40:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_reg_sync [2022-07-20 01:40:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_reg_sync [2022-07-20 01:40:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-20 01:40:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-20 01:40:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-20 01:40:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 01:40:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 01:40:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 01:40:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 01:40:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_tiocmiwait [2022-07-20 01:40:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_tiocmiwait [2022-07-20 01:40:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-20 01:40:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-20 01:40:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2022-07-20 01:40:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2022-07-20 01:40:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 01:40:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 01:40:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_port_private [2022-07-20 01:40:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_port_private [2022-07-20 01:40:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-07-20 01:40:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-07-20 01:40:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2022-07-20 01:40:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2022-07-20 01:40:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_usb_serial [2022-07-20 01:40:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_usb_serial [2022-07-20 01:40:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_get_icount [2022-07-20 01:40:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_get_icount [2022-07-20 01:40:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-20 01:40:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-20 01:40:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-20 01:40:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-20 01:40:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_termios [2022-07-20 01:40:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_termios [2022-07-20 01:40:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_3 [2022-07-20 01:40:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_3 [2022-07-20 01:40:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 01:40:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 01:40:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 01:40:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 01:40:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_chars_in_buffer [2022-07-20 01:40:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_chars_in_buffer [2022-07-20 01:40:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_throttle [2022-07-20 01:40:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_throttle [2022-07-20 01:40:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-07-20 01:40:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-07-20 01:40:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-07-20 01:40:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-07-20 01:40:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 01:40:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 01:40:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-20 01:40:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-20 01:40:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-20 01:40:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-20 01:40:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-20 01:40:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-20 01:40:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_bulk_in_callback [2022-07-20 01:40:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_bulk_in_callback [2022-07-20 01:40:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-20 01:40:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 01:40:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 01:40:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 01:40:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_calc_num_ports [2022-07-20 01:40:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_calc_num_ports [2022-07-20 01:40:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_break [2022-07-20 01:40:55,527 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_break [2022-07-20 01:40:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmset [2022-07-20 01:40:55,527 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmset [2022-07-20 01:40:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-20 01:40:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 01:40:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-20 01:40:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-20 01:40:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_unthrottle [2022-07-20 01:40:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_unthrottle [2022-07-20 01:40:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-20 01:40:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-20 01:40:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-07-20 01:40:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-07-20 01:40:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_remove [2022-07-20 01:40:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_remove [2022-07-20 01:40:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_probe [2022-07-20 01:40:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_probe [2022-07-20 01:40:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-07-20 01:40:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-07-20 01:40:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write [2022-07-20 01:40:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write [2022-07-20 01:40:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-20 01:40:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-20 01:40:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_ioctl [2022-07-20 01:40:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_ioctl [2022-07-20 01:40:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-20 01:40:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-20 01:40:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-20 01:40:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-20 01:40:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-20 01:40:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-20 01:40:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-07-20 01:40:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-07-20 01:40:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_uart_reg [2022-07-20 01:40:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_uart_reg [2022-07-20 01:40:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-20 01:40:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-20 01:40:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_async [2022-07-20 01:40:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_async [2022-07-20 01:40:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-20 01:40:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-20 01:40:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-20 01:40:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-20 01:40:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-20 01:40:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-20 01:40:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 01:40:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 01:40:55,539 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_sync [2022-07-20 01:40:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_sync [2022-07-20 01:40:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-20 01:40:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-20 01:40:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 01:40:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-07-20 01:40:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-07-20 01:40:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-20 01:40:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-20 01:40:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 01:40:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 01:40:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-20 01:40:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-20 01:40:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-07-20 01:40:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-07-20 01:40:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit_lock [2022-07-20 01:40:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit_lock [2022-07-20 01:40:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-20 01:40:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_uart_reg [2022-07-20 01:40:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_uart_reg [2022-07-20 01:40:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-07-20 01:40:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-07-20 01:40:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-20 01:40:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-20 01:40:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-20 01:40:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-20 01:40:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_paranoia_check [2022-07-20 01:40:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_paranoia_check [2022-07-20 01:40:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_serial_paranoia_check [2022-07-20 01:40:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_serial_paranoia_check [2022-07-20 01:40:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_led_activity [2022-07-20 01:40:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_led_activity [2022-07-20 01:40:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write_room [2022-07-20 01:40:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write_room [2022-07-20 01:40:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmget [2022-07-20 01:40:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmget [2022-07-20 01:40:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-20 01:40:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-20 01:40:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_port_private [2022-07-20 01:40:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_port_private [2022-07-20 01:40:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-20 01:40:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2022-07-20 01:40:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2022-07-20 01:40:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 01:40:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 01:40:56,294 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 01:40:56,296 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 01:41:07,669 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 01:42:01,054 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 01:42:01,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 01:42:01,072 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 01:42:01,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:42:01 BoogieIcfgContainer [2022-07-20 01:42:01,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 01:42:01,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 01:42:01,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 01:42:01,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 01:42:01,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:40:52" (1/3) ... [2022-07-20 01:42:01,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7399a043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:42:01, skipping insertion in model container [2022-07-20 01:42:01,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:40:54" (2/3) ... [2022-07-20 01:42:01,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7399a043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:42:01, skipping insertion in model container [2022-07-20 01:42:01,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:42:01" (3/3) ... [2022-07-20 01:42:01,083 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-07-20 01:42:01,098 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 01:42:01,098 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 01:42:01,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 01:42:01,216 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@2eb1d5bc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1131f256 [2022-07-20 01:42:01,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 01:42:01,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 1732 states, 1231 states have (on average 1.3899268887083671) internal successors, (1711), 1254 states have internal predecessors, (1711), 435 states have call successors, (435), 65 states have call predecessors, (435), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) [2022-07-20 01:42:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-20 01:42:01,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:42:01,255 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 01:42:01,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:42:01,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:42:01,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1037408464, now seen corresponding path program 1 times [2022-07-20 01:42:01,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:42:01,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102412569] [2022-07-20 01:42:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:42:01,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:42:01,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:42:01,285 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) [2022-07-20 01:42:01,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 01:42:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:42:02,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 2864 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 01:42:02,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:42:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-07-20 01:42:03,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:42:03,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:42:03,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102412569] [2022-07-20 01:42:03,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102412569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:42:03,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:42:03,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:42:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488098698] [2022-07-20 01:42:03,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:42:03,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:42:03,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:42:03,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:42:03,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:42:03,290 INFO L87 Difference]: Start difference. First operand has 1732 states, 1231 states have (on average 1.3899268887083671) internal successors, (1711), 1254 states have internal predecessors, (1711), 435 states have call successors, (435), 65 states have call predecessors, (435), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-20 01:42:03,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:42:03,938 INFO L93 Difference]: Finished difference Result 3465 states and 5248 transitions. [2022-07-20 01:42:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:42:03,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 161 [2022-07-20 01:42:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:42:03,972 INFO L225 Difference]: With dead ends: 3465 [2022-07-20 01:42:03,973 INFO L226 Difference]: Without dead ends: 1718 [2022-07-20 01:42:03,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-20 01:42:03,993 INFO L413 NwaCegarLoop]: 2562 mSDtfsCounter, 6 mSDsluCounter, 10224 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12786 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 01:42:03,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 12786 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 01:42:04,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2022-07-20 01:42:04,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1718. [2022-07-20 01:42:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1224 states have (on average 1.3848039215686274) internal successors, (1695), 1240 states have internal predecessors, (1695), 430 states have call successors, (430), 64 states have call predecessors, (430), 63 states have return successors, (429), 423 states have call predecessors, (429), 429 states have call successors, (429) [2022-07-20 01:42:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2554 transitions. [2022-07-20 01:42:04,131 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2554 transitions. Word has length 161 [2022-07-20 01:42:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:42:04,132 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 2554 transitions. [2022-07-20 01:42:04,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-20 01:42:04,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2554 transitions. [2022-07-20 01:42:04,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-20 01:42:04,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:42:04,136 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 01:42:04,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-20 01:42:04,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:42:04,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:42:04,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:42:04,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1849684249, now seen corresponding path program 1 times [2022-07-20 01:42:04,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:42:04,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816204316] [2022-07-20 01:42:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:42:04,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:42:04,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:42:04,350 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) [2022-07-20 01:42:04,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 01:42:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:42:05,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 01:42:05,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:42:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-07-20 01:42:06,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:42:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-20 01:42:07,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:42:07,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816204316] [2022-07-20 01:42:07,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816204316] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:42:07,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:42:07,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-20 01:42:07,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422102006] [2022-07-20 01:42:07,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:42:07,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 01:42:07,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:42:07,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 01:42:07,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-20 01:42:07,011 INFO L87 Difference]: Start difference. First operand 1718 states and 2554 transitions. Second operand has 11 states, 9 states have (on average 7.111111111111111) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-20 01:42:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:42:08,118 INFO L93 Difference]: Finished difference Result 3435 states and 5115 transitions. [2022-07-20 01:42:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 01:42:08,119 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.111111111111111) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 168 [2022-07-20 01:42:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:42:08,136 INFO L225 Difference]: With dead ends: 3435 [2022-07-20 01:42:08,136 INFO L226 Difference]: Without dead ends: 1724 [2022-07-20 01:42:08,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-20 01:42:08,149 INFO L413 NwaCegarLoop]: 2544 mSDtfsCounter, 12 mSDsluCounter, 20305 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 22849 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-20 01:42:08,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 22849 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-20 01:42:08,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2022-07-20 01:42:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2022-07-20 01:42:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1228 states have (on average 1.3835504885993486) internal successors, (1699), 1244 states have internal predecessors, (1699), 431 states have call successors, (431), 65 states have call predecessors, (431), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) [2022-07-20 01:42:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2560 transitions. [2022-07-20 01:42:08,292 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2560 transitions. Word has length 168 [2022-07-20 01:42:08,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:42:08,292 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2560 transitions. [2022-07-20 01:42:08,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.111111111111111) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-20 01:42:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2560 transitions. [2022-07-20 01:42:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-20 01:42:08,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:42:08,295 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 01:42:08,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 01:42:08,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:42:08,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:42:08,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:42:08,510 INFO L85 PathProgramCache]: Analyzing trace with hash 372913904, now seen corresponding path program 2 times [2022-07-20 01:42:08,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:42:08,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288174332] [2022-07-20 01:42:08,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:42:08,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:42:08,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:42:08,515 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) [2022-07-20 01:42:08,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 01:42:09,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:42:09,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:42:09,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:42:09,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:42:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-07-20 01:42:09,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:42:09,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:42:09,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288174332] [2022-07-20 01:42:09,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288174332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:42:09,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:42:09,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:42:09,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152505095] [2022-07-20 01:42:09,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:42:09,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:42:09,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:42:09,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:42:09,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:42:09,788 INFO L87 Difference]: Start difference. First operand 1724 states and 2560 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-20 01:42:11,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:42:11,545 INFO L93 Difference]: Finished difference Result 3552 states and 5258 transitions. [2022-07-20 01:42:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:42:11,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 175 [2022-07-20 01:42:11,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:42:11,558 INFO L225 Difference]: With dead ends: 3552 [2022-07-20 01:42:11,558 INFO L226 Difference]: Without dead ends: 1865 [2022-07-20 01:42:11,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:42:11,568 INFO L413 NwaCegarLoop]: 2571 mSDtfsCounter, 218 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 4871 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-20 01:42:11,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 4871 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-20 01:42:11,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2022-07-20 01:42:11,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1862. [2022-07-20 01:42:11,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1332 states have (on average 1.3843843843843844) internal successors, (1844), 1357 states have internal predecessors, (1844), 450 states have call successors, (450), 80 states have call predecessors, (450), 79 states have return successors, (449), 437 states have call predecessors, (449), 449 states have call successors, (449) [2022-07-20 01:42:11,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2743 transitions. [2022-07-20 01:42:11,640 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2743 transitions. Word has length 175 [2022-07-20 01:42:11,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:42:11,641 INFO L495 AbstractCegarLoop]: Abstraction has 1862 states and 2743 transitions. [2022-07-20 01:42:11,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-20 01:42:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2743 transitions. [2022-07-20 01:42:11,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-20 01:42:11,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:42:11,644 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:42:11,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 01:42:11,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:42:11,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:42:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:42:11,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1349972621, now seen corresponding path program 1 times [2022-07-20 01:42:11,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:42:11,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804788507] [2022-07-20 01:42:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:42:11,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:42:11,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:42:11,869 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) [2022-07-20 01:42:11,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 01:42:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:42:13,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 3222 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 01:42:13,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:42:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 102 proven. 3 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-07-20 01:42:13,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:42:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-07-20 01:42:15,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:42:15,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804788507] [2022-07-20 01:42:15,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804788507] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:42:15,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:42:15,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-20 01:42:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178934244] [2022-07-20 01:42:15,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:42:15,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 01:42:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:42:15,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 01:42:15,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-20 01:42:15,110 INFO L87 Difference]: Start difference. First operand 1862 states and 2743 transitions. Second operand has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-20 01:42:16,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:42:16,277 INFO L93 Difference]: Finished difference Result 3710 states and 5480 transitions. [2022-07-20 01:42:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 01:42:16,278 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 184 [2022-07-20 01:42:16,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:42:16,292 INFO L225 Difference]: With dead ends: 3710 [2022-07-20 01:42:16,293 INFO L226 Difference]: Without dead ends: 1864 [2022-07-20 01:42:16,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-20 01:42:16,306 INFO L413 NwaCegarLoop]: 2544 mSDtfsCounter, 11 mSDsluCounter, 20305 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22849 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-20 01:42:16,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 22849 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-20 01:42:16,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-07-20 01:42:16,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1864. [2022-07-20 01:42:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1334 states have (on average 1.383808095952024) internal successors, (1846), 1359 states have internal predecessors, (1846), 450 states have call successors, (450), 80 states have call predecessors, (450), 79 states have return successors, (449), 437 states have call predecessors, (449), 449 states have call successors, (449) [2022-07-20 01:42:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2745 transitions. [2022-07-20 01:42:16,387 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2745 transitions. Word has length 184 [2022-07-20 01:42:16,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:42:16,388 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 2745 transitions. [2022-07-20 01:42:16,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-20 01:42:16,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2745 transitions. [2022-07-20 01:42:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-20 01:42:16,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:42:16,392 INFO L195 NwaCegarLoop]: trace histogram [21, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:42:16,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 01:42:16,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:42:16,619 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:42:16,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:42:16,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1932572028, now seen corresponding path program 2 times [2022-07-20 01:42:16,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:42:16,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007354644] [2022-07-20 01:42:16,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:42:16,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:42:16,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:42:16,625 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) [2022-07-20 01:42:16,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 01:42:17,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:42:17,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:42:17,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:42:17,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:42:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2022-07-20 01:42:17,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:42:17,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:42:17,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007354644] [2022-07-20 01:42:17,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007354644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:42:17,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:42:17,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:42:17,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444780628] [2022-07-20 01:42:17,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:42:17,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:42:17,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:42:17,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:42:17,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:42:17,982 INFO L87 Difference]: Start difference. First operand 1864 states and 2745 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:42:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:42:18,441 INFO L93 Difference]: Finished difference Result 5464 states and 8164 transitions. [2022-07-20 01:42:18,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:42:18,442 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 191 [2022-07-20 01:42:18,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:42:18,470 INFO L225 Difference]: With dead ends: 5464 [2022-07-20 01:42:18,471 INFO L226 Difference]: Without dead ends: 3658 [2022-07-20 01:42:18,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:42:18,484 INFO L413 NwaCegarLoop]: 2983 mSDtfsCounter, 2535 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2535 SdHoareTripleChecker+Valid, 5515 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 01:42:18,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2535 Valid, 5515 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 01:42:18,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2022-07-20 01:42:18,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3655. [2022-07-20 01:42:18,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2622 states have (on average 1.3859649122807018) internal successors, (3634), 2668 states have internal predecessors, (3634), 882 states have call successors, (882), 153 states have call predecessors, (882), 150 states have return successors, (919), 856 states have call predecessors, (919), 881 states have call successors, (919) [2022-07-20 01:42:18,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5435 transitions. [2022-07-20 01:42:18,708 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5435 transitions. Word has length 191 [2022-07-20 01:42:18,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:42:18,710 INFO L495 AbstractCegarLoop]: Abstraction has 3655 states and 5435 transitions. [2022-07-20 01:42:18,710 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:42:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5435 transitions. [2022-07-20 01:42:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-20 01:42:18,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:42:18,713 INFO L195 NwaCegarLoop]: trace histogram [21, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:42:18,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 01:42:18,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:42:18,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:42:18,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:42:18,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1191665847, now seen corresponding path program 1 times [2022-07-20 01:42:18,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:42:18,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588852094] [2022-07-20 01:42:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:42:18,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:42:18,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:42:18,935 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) [2022-07-20 01:42:18,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 01:42:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:42:20,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 3301 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 01:42:20,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:42:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 144 proven. 6 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-07-20 01:42:21,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:42:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-07-20 01:42:22,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:42:22,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588852094] [2022-07-20 01:42:22,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588852094] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:42:22,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:42:22,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-20 01:42:22,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248506237] [2022-07-20 01:42:22,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:42:22,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-20 01:42:22,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:42:22,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-20 01:42:22,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-20 01:42:22,471 INFO L87 Difference]: Start difference. First operand 3655 states and 5435 transitions. Second operand has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 15 states have internal predecessors, (77), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-20 01:42:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:42:23,663 INFO L93 Difference]: Finished difference Result 7299 states and 10872 transitions. [2022-07-20 01:42:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 01:42:23,664 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 15 states have internal predecessors, (77), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 192 [2022-07-20 01:42:23,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:42:23,687 INFO L225 Difference]: With dead ends: 7299 [2022-07-20 01:42:23,688 INFO L226 Difference]: Without dead ends: 3658 [2022-07-20 01:42:23,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-07-20 01:42:23,710 INFO L413 NwaCegarLoop]: 2544 mSDtfsCounter, 12 mSDsluCounter, 20298 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 22842 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-20 01:42:23,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 22842 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-20 01:42:23,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2022-07-20 01:42:23,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3658. [2022-07-20 01:42:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 2625 states have (on average 1.3855238095238096) internal successors, (3637), 2671 states have internal predecessors, (3637), 882 states have call successors, (882), 153 states have call predecessors, (882), 150 states have return successors, (919), 856 states have call predecessors, (919), 881 states have call successors, (919) [2022-07-20 01:42:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 5438 transitions. [2022-07-20 01:42:23,956 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 5438 transitions. Word has length 192 [2022-07-20 01:42:23,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:42:23,956 INFO L495 AbstractCegarLoop]: Abstraction has 3658 states and 5438 transitions. [2022-07-20 01:42:23,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 15 states have internal predecessors, (77), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-20 01:42:23,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 5438 transitions. [2022-07-20 01:42:23,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-20 01:42:23,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:42:23,959 INFO L195 NwaCegarLoop]: trace histogram [28, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:42:24,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 01:42:24,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:42:24,184 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:42:24,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:42:24,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2045838418, now seen corresponding path program 2 times [2022-07-20 01:42:24,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:42:24,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306592569] [2022-07-20 01:42:24,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:42:24,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:42:24,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:42:24,187 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) [2022-07-20 01:42:24,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 01:42:25,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:42:25,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:42:25,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:42:25,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:42:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2022-07-20 01:42:25,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:42:25,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:42:25,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306592569] [2022-07-20 01:42:25,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306592569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:42:25,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:42:25,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:42:25,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303203945] [2022-07-20 01:42:25,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:42:25,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:42:25,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:42:25,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:42:25,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:42:25,629 INFO L87 Difference]: Start difference. First operand 3658 states and 5438 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:42:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:42:26,058 INFO L93 Difference]: Finished difference Result 10848 states and 16300 transitions. [2022-07-20 01:42:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:42:26,060 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 199 [2022-07-20 01:42:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:42:26,108 INFO L225 Difference]: With dead ends: 10848 [2022-07-20 01:42:26,109 INFO L226 Difference]: Without dead ends: 7249 [2022-07-20 01:42:26,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:42:26,132 INFO L413 NwaCegarLoop]: 2971 mSDtfsCounter, 2539 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 5503 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 01:42:26,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2539 Valid, 5503 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 01:42:26,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7249 states. [2022-07-20 01:42:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7249 to 7246. [2022-07-20 01:42:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7246 states, 5207 states have (on average 1.3862108699827156) internal successors, (7218), 5295 states have internal predecessors, (7218), 1744 states have call successors, (1744), 299 states have call predecessors, (1744), 294 states have return successors, (1896), 1697 states have call predecessors, (1896), 1743 states have call successors, (1896) [2022-07-20 01:42:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7246 states to 7246 states and 10858 transitions. [2022-07-20 01:42:26,493 INFO L78 Accepts]: Start accepts. Automaton has 7246 states and 10858 transitions. Word has length 199 [2022-07-20 01:42:26,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:42:26,495 INFO L495 AbstractCegarLoop]: Abstraction has 7246 states and 10858 transitions. [2022-07-20 01:42:26,495 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:42:26,495 INFO L276 IsEmpty]: Start isEmpty. Operand 7246 states and 10858 transitions. [2022-07-20 01:42:26,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-20 01:42:26,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:42:26,497 INFO L195 NwaCegarLoop]: trace histogram [28, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:42:26,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-20 01:42:26,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:42:26,720 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:42:26,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:42:26,720 INFO L85 PathProgramCache]: Analyzing trace with hash 837373547, now seen corresponding path program 1 times [2022-07-20 01:42:26,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:42:26,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712294842] [2022-07-20 01:42:26,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:42:26,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:42:26,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:42:26,723 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) [2022-07-20 01:42:26,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 01:42:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:42:29,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 3380 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 01:42:29,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:42:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 489 proven. 10 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2022-07-20 01:42:29,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:42:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 93 proven. 103 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-07-20 01:42:31,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:42:31,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712294842] [2022-07-20 01:42:31,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712294842] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:42:31,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:42:31,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-20 01:42:31,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864978221] [2022-07-20 01:42:31,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:42:31,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-20 01:42:31,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:42:31,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-20 01:42:31,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-20 01:42:31,377 INFO L87 Difference]: Start difference. First operand 7246 states and 10858 transitions. Second operand has 17 states, 15 states have (on average 5.333333333333333) internal successors, (80), 17 states have internal predecessors, (80), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-20 01:42:33,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:42:33,056 INFO L93 Difference]: Finished difference Result 14490 states and 21739 transitions. [2022-07-20 01:42:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-20 01:42:33,057 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.333333333333333) internal successors, (80), 17 states have internal predecessors, (80), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 200 [2022-07-20 01:42:33,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:42:33,112 INFO L225 Difference]: With dead ends: 14490 [2022-07-20 01:42:33,112 INFO L226 Difference]: Without dead ends: 7259 [2022-07-20 01:42:33,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-07-20 01:42:33,152 INFO L413 NwaCegarLoop]: 2543 mSDtfsCounter, 24 mSDsluCounter, 22837 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 25380 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:42:33,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 25380 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-20 01:42:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7259 states. [2022-07-20 01:42:33,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7259 to 7259. [2022-07-20 01:42:33,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7259 states, 5219 states have (on average 1.3855144663728685) internal successors, (7231), 5307 states have internal predecessors, (7231), 1744 states have call successors, (1744), 300 states have call predecessors, (1744), 295 states have return successors, (1896), 1697 states have call predecessors, (1896), 1743 states have call successors, (1896) [2022-07-20 01:42:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7259 states to 7259 states and 10871 transitions. [2022-07-20 01:42:33,432 INFO L78 Accepts]: Start accepts. Automaton has 7259 states and 10871 transitions. Word has length 200 [2022-07-20 01:42:33,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:42:33,435 INFO L495 AbstractCegarLoop]: Abstraction has 7259 states and 10871 transitions. [2022-07-20 01:42:33,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.333333333333333) internal successors, (80), 17 states have internal predecessors, (80), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-20 01:42:33,436 INFO L276 IsEmpty]: Start isEmpty. Operand 7259 states and 10871 transitions. [2022-07-20 01:42:33,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-20 01:42:33,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:42:33,439 INFO L195 NwaCegarLoop]: trace histogram [30, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:42:33,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-20 01:42:33,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:42:33,660 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:42:33,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:42:33,660 INFO L85 PathProgramCache]: Analyzing trace with hash 505948155, now seen corresponding path program 2 times [2022-07-20 01:42:33,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:42:33,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353354275] [2022-07-20 01:42:33,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:42:33,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:42:33,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:42:33,664 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) [2022-07-20 01:42:33,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 01:42:34,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:42:34,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:42:35,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:42:35,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:42:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2022-07-20 01:42:35,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:42:35,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:42:35,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353354275] [2022-07-20 01:42:35,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353354275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:42:35,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:42:35,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:42:35,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129576681] [2022-07-20 01:42:35,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:42:35,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:42:35,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:42:35,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:42:35,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:42:35,149 INFO L87 Difference]: Start difference. First operand 7259 states and 10871 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:42:35,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:42:35,792 INFO L93 Difference]: Finished difference Result 21631 states and 32681 transitions. [2022-07-20 01:42:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:42:35,794 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 202 [2022-07-20 01:42:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:42:35,878 INFO L225 Difference]: With dead ends: 21631 [2022-07-20 01:42:35,879 INFO L226 Difference]: Without dead ends: 14440 [2022-07-20 01:42:35,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:42:35,919 INFO L413 NwaCegarLoop]: 2971 mSDtfsCounter, 2540 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 5503 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 01:42:35,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2540 Valid, 5503 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 01:42:35,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14440 states. [2022-07-20 01:42:36,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14440 to 14437. [2022-07-20 01:42:36,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14437 states, 10389 states have (on average 1.3856001540090481) internal successors, (14395), 10557 states have internal predecessors, (14395), 3464 states have call successors, (3464), 592 states have call predecessors, (3464), 583 states have return successors, (3914), 3379 states have call predecessors, (3914), 3463 states have call successors, (3914) [2022-07-20 01:42:36,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14437 states to 14437 states and 21773 transitions. [2022-07-20 01:42:36,625 INFO L78 Accepts]: Start accepts. Automaton has 14437 states and 21773 transitions. Word has length 202 [2022-07-20 01:42:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:42:36,626 INFO L495 AbstractCegarLoop]: Abstraction has 14437 states and 21773 transitions. [2022-07-20 01:42:36,626 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:42:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 14437 states and 21773 transitions. [2022-07-20 01:42:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-20 01:42:36,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:42:36,629 INFO L195 NwaCegarLoop]: trace histogram [30, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:42:36,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 01:42:36,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:42:36,843 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:42:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:42:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1136803046, now seen corresponding path program 1 times [2022-07-20 01:42:36,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:42:36,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315256514] [2022-07-20 01:42:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:42:36,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:42:36,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:42:36,848 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) [2022-07-20 01:42:36,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 01:42:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:42:39,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 3404 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 01:42:39,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:42:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 540 proven. 15 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-20 01:42:39,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:42:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 108 proven. 129 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2022-07-20 01:42:42,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:42:42,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315256514] [2022-07-20 01:42:42,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315256514] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:42:42,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:42:42,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-20 01:42:42,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347316844] [2022-07-20 01:42:42,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:42:42,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-20 01:42:42,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:42:42,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-20 01:42:42,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-07-20 01:42:42,085 INFO L87 Difference]: Start difference. First operand 14437 states and 21773 transitions. Second operand has 19 states, 17 states have (on average 4.882352941176471) internal successors, (83), 19 states have internal predecessors, (83), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-20 01:42:44,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:42:44,142 INFO L93 Difference]: Finished difference Result 28872 states and 43579 transitions. [2022-07-20 01:42:44,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-20 01:42:44,144 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.882352941176471) internal successors, (83), 19 states have internal predecessors, (83), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 203 [2022-07-20 01:42:44,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:42:44,324 INFO L225 Difference]: With dead ends: 28872 [2022-07-20 01:42:44,325 INFO L226 Difference]: Without dead ends: 14446 [2022-07-20 01:42:44,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-07-20 01:42:44,383 INFO L413 NwaCegarLoop]: 2543 mSDtfsCounter, 26 mSDsluCounter, 25391 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 27934 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-20 01:42:44,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 27934 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-20 01:42:44,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14446 states. [2022-07-20 01:42:44,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14446 to 14446. [2022-07-20 01:42:44,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14446 states, 10398 states have (on average 1.3852663973841124) internal successors, (14404), 10566 states have internal predecessors, (14404), 3464 states have call successors, (3464), 592 states have call predecessors, (3464), 583 states have return successors, (3914), 3379 states have call predecessors, (3914), 3463 states have call successors, (3914) [2022-07-20 01:42:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14446 states to 14446 states and 21782 transitions. [2022-07-20 01:42:45,041 INFO L78 Accepts]: Start accepts. Automaton has 14446 states and 21782 transitions. Word has length 203 [2022-07-20 01:42:45,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:42:45,042 INFO L495 AbstractCegarLoop]: Abstraction has 14446 states and 21782 transitions. [2022-07-20 01:42:45,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.882352941176471) internal successors, (83), 19 states have internal predecessors, (83), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-20 01:42:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 14446 states and 21782 transitions. [2022-07-20 01:42:45,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-20 01:42:45,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:42:45,044 INFO L195 NwaCegarLoop]: trace histogram [32, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:42:45,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 01:42:45,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:42:45,263 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:42:45,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:42:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1697725334, now seen corresponding path program 2 times [2022-07-20 01:42:45,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:42:45,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578659117] [2022-07-20 01:42:45,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:42:45,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:42:45,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:42:45,269 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) [2022-07-20 01:42:45,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-20 01:42:46,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:42:46,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:42:47,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:42:47,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:42:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2022-07-20 01:42:47,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:42:47,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:42:47,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578659117] [2022-07-20 01:42:47,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578659117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:42:47,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:42:47,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:42:47,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450346848] [2022-07-20 01:42:47,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:42:47,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:42:47,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:42:47,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:42:47,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:42:47,159 INFO L87 Difference]: Start difference. First operand 14446 states and 21782 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:42:47,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:42:47,957 INFO L93 Difference]: Finished difference Result 43119 states and 65523 transitions. [2022-07-20 01:42:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:42:47,958 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 205 [2022-07-20 01:42:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:42:48,124 INFO L225 Difference]: With dead ends: 43119 [2022-07-20 01:42:48,124 INFO L226 Difference]: Without dead ends: 28742 [2022-07-20 01:42:48,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:42:48,200 INFO L413 NwaCegarLoop]: 2970 mSDtfsCounter, 2541 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2541 SdHoareTripleChecker+Valid, 5502 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 01:42:48,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2541 Valid, 5502 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 01:42:48,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28742 states. [2022-07-20 01:42:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28742 to 28739. [2022-07-20 01:42:49,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28739 states, 20704 states have (on average 1.3851912673879443) internal successors, (28679), 21024 states have internal predecessors, (28679), 6884 states have call successors, (6884), 1166 states have call predecessors, (6884), 1150 states have return successors, (8054), 6730 states have call predecessors, (8054), 6883 states have call successors, (8054) [2022-07-20 01:42:50,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28739 states to 28739 states and 43617 transitions. [2022-07-20 01:42:50,115 INFO L78 Accepts]: Start accepts. Automaton has 28739 states and 43617 transitions. Word has length 205 [2022-07-20 01:42:50,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:42:50,116 INFO L495 AbstractCegarLoop]: Abstraction has 28739 states and 43617 transitions. [2022-07-20 01:42:50,116 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:42:50,116 INFO L276 IsEmpty]: Start isEmpty. Operand 28739 states and 43617 transitions. [2022-07-20 01:42:50,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-20 01:42:50,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:42:50,119 INFO L195 NwaCegarLoop]: trace histogram [32, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:42:50,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-20 01:42:50,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:42:50,339 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:42:50,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:42:50,340 INFO L85 PathProgramCache]: Analyzing trace with hash 317004011, now seen corresponding path program 1 times [2022-07-20 01:42:50,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:42:50,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607054427] [2022-07-20 01:42:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:42:50,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:42:50,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:42:50,345 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) [2022-07-20 01:42:50,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-20 01:42:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:42:53,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 3436 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-20 01:42:53,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:42:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 817 proven. 21 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-07-20 01:42:54,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:42:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 123 proven. 158 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2022-07-20 01:42:56,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:42:56,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607054427] [2022-07-20 01:42:56,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607054427] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:42:56,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:42:56,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-20 01:42:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127685043] [2022-07-20 01:42:56,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:42:56,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-20 01:42:56,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:42:56,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-20 01:42:56,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-20 01:42:56,513 INFO L87 Difference]: Start difference. First operand 28739 states and 43617 transitions. Second operand has 21 states, 19 states have (on average 5.105263157894737) internal successors, (97), 21 states have internal predecessors, (97), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-20 01:42:59,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:42:59,253 INFO L93 Difference]: Finished difference Result 57500 states and 87331 transitions. [2022-07-20 01:42:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-20 01:42:59,254 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.105263157894737) internal successors, (97), 21 states have internal predecessors, (97), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 269 [2022-07-20 01:42:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:42:59,400 INFO L225 Difference]: With dead ends: 57500 [2022-07-20 01:42:59,400 INFO L226 Difference]: Without dead ends: 28756 [2022-07-20 01:42:59,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2022-07-20 01:42:59,537 INFO L413 NwaCegarLoop]: 2543 mSDtfsCounter, 28 mSDsluCounter, 33004 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 35547 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-20 01:42:59,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 35547 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-20 01:42:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28756 states. [2022-07-20 01:43:00,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28756 to 28756. [2022-07-20 01:43:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28756 states, 20721 states have (on average 1.384875247333623) internal successors, (28696), 21041 states have internal predecessors, (28696), 6884 states have call successors, (6884), 1166 states have call predecessors, (6884), 1150 states have return successors, (8054), 6730 states have call predecessors, (8054), 6883 states have call successors, (8054) [2022-07-20 01:43:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28756 states to 28756 states and 43634 transitions. [2022-07-20 01:43:00,743 INFO L78 Accepts]: Start accepts. Automaton has 28756 states and 43634 transitions. Word has length 269 [2022-07-20 01:43:00,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:43:00,744 INFO L495 AbstractCegarLoop]: Abstraction has 28756 states and 43634 transitions. [2022-07-20 01:43:00,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.105263157894737) internal successors, (97), 21 states have internal predecessors, (97), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-20 01:43:00,744 INFO L276 IsEmpty]: Start isEmpty. Operand 28756 states and 43634 transitions. [2022-07-20 01:43:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-20 01:43:00,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:43:00,746 INFO L195 NwaCegarLoop]: trace histogram [34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:43:00,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-20 01:43:00,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:43:00,953 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:43:00,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:43:00,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1017701029, now seen corresponding path program 2 times [2022-07-20 01:43:00,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:43:00,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516025621] [2022-07-20 01:43:00,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:43:00,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:43:00,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:43:00,956 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) [2022-07-20 01:43:00,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-20 01:43:02,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:43:02,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:43:02,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:43:02,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:43:04,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2022-07-20 01:43:04,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:43:04,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:43:04,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516025621] [2022-07-20 01:43:04,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516025621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:43:04,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:43:04,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:43:04,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608774049] [2022-07-20 01:43:04,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:43:04,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:43:04,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:43:04,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:43:04,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:43:04,552 INFO L87 Difference]: Start difference. First operand 28756 states and 43634 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 01:43:04,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:43:04,988 INFO L93 Difference]: Finished difference Result 28804 states and 43666 transitions. [2022-07-20 01:43:04,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:43:04,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 271 [2022-07-20 01:43:04,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:43:04,992 INFO L225 Difference]: With dead ends: 28804 [2022-07-20 01:43:04,992 INFO L226 Difference]: Without dead ends: 0 [2022-07-20 01:43:05,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:43:05,047 INFO L413 NwaCegarLoop]: 2549 mSDtfsCounter, 2420 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:43:05,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2420 Valid, 2585 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 01:43:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-20 01:43:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-20 01:43:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 01:43:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-20 01:43:05,054 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 271 [2022-07-20 01:43:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:43:05,054 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-20 01:43:05,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 01:43:05,055 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-20 01:43:05,055 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-20 01:43:05,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-20 01:43:05,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-20 01:43:05,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:43:05,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.