./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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.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 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:58:27,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:58:27,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:58:27,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:58:27,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:58:27,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:58:27,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:58:27,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:58:27,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:58:27,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:58:27,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:58:27,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:58:27,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:58:27,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:58:27,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:58:27,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:58:27,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:58:27,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:58:27,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:58:27,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:58:27,914 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:58:27,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:58:27,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:58:27,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:58:27,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:58:27,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:58:27,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:58:27,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:58:27,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:58:27,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:58:27,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:58:27,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:58:27,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:58:27,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:58:27,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:58:27,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:58:27,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:58:27,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:58:27,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:58:27,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:58:27,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:58:27,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:58:27,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:58:27,980 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:58:27,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:58:27,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:58:27,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:58:27,982 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:58:27,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:58:27,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:58:27,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:58:27,984 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:58:27,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:58:27,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:58:27,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:58:27,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:58:27,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:58:27,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:58:27,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:58:27,987 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:58:27,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:58:27,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:58:27,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:58:27,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:58:27,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:58:27,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:58:27,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:58:27,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:58:27,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:58:27,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:58:27,989 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:58:27,989 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:58:27,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:58:27,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2022-07-21 11:58:28,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:58:28,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:58:28,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:58:28,418 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:58:28,423 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:58:28,425 INFO L432 ainManager$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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-07-21 11:58:28,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21eaf0b41/a9f33bed7d2444ca8f97153598a1b158/FLAG247aafc11 [2022-07-21 11:58:29,374 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:58:29,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-07-21 11:58:29,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21eaf0b41/a9f33bed7d2444ca8f97153598a1b158/FLAG247aafc11 [2022-07-21 11:58:29,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21eaf0b41/a9f33bed7d2444ca8f97153598a1b158 [2022-07-21 11:58:29,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:58:29,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:58:29,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:58:29,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:58:29,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:58:29,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:58:29" (1/1) ... [2022-07-21 11:58:29,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da11c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:29, skipping insertion in model container [2022-07-21 11:58:29,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:58:29" (1/1) ... [2022-07-21 11:58:29,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:58:30,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:58:32,550 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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2022-07-21 11:58:32,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:58:32,766 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:58:32,933 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: ftr_header = ftr_header & 65535U [3617] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckBinaryExpression(TypeCheckHelper.java:207) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.constructBinaryExpression(ExpressionFactory.java:597) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.newBinaryExpression(ExpressionFactory.java:132) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:483) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 11:58:32,942 INFO L158 Benchmark]: Toolchain (without parser) took 3060.58ms. Allocated memory was 69.2MB in the beginning and 115.3MB in the end (delta: 46.1MB). Free memory was 38.7MB in the beginning and 53.0MB in the end (delta: -14.3MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2022-07-21 11:58:32,943 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 69.2MB. Free memory was 51.3MB in the beginning and 51.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 11:58:32,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3058.74ms. Allocated memory was 69.2MB in the beginning and 115.3MB in the end (delta: 46.1MB). Free memory was 38.5MB in the beginning and 53.0MB in the end (delta: -14.5MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2022-07-21 11:58:32,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 69.2MB. Free memory was 51.3MB in the beginning and 51.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3058.74ms. Allocated memory was 69.2MB in the beginning and 115.3MB in the end (delta: 46.1MB). Free memory was 38.5MB in the beginning and 53.0MB in the end (delta: -14.5MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: ftr_header = ftr_header & 65535U [3617] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: ftr_header = ftr_header & 65535U [3617]: 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-08_1a-drivers--rapidio--rapidio.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 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:58:34,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:58:34,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:58:34,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:58:34,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:58:34,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:58:34,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:58:34,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:58:34,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:58:34,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:58:34,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:58:34,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:58:34,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:58:34,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:58:34,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:58:34,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:58:34,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:58:34,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:58:34,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:58:35,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:58:35,002 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:58:35,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:58:35,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:58:35,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:58:35,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:58:35,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:58:35,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:58:35,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:58:35,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:58:35,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:58:35,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:58:35,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:58:35,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:58:35,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:58:35,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:58:35,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:58:35,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:58:35,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:58:35,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:58:35,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:58:35,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:58:35,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:58:35,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 11:58:35,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:58:35,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:58:35,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:58:35,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:58:35,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:58:35,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:58:35,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:58:35,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:58:35,070 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:58:35,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:58:35,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:58:35,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:58:35,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:58:35,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:58:35,073 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 11:58:35,073 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 11:58:35,073 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 11:58:35,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:58:35,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:58:35,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:58:35,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:58:35,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:58:35,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:58:35,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:58:35,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:58:35,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:58:35,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:58:35,076 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 11:58:35,076 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 11:58:35,076 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:58:35,076 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:58:35,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:58:35,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 11:58:35,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2022-07-21 11:58:35,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:58:35,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:58:35,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:58:35,459 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:58:35,460 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:58:35,461 INFO L432 ainManager$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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-07-21 11:58:35,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/461cf4ec6/406b1b212b8b4a8f9759bb54960bf0a7/FLAG38e261c3b [2022-07-21 11:58:36,262 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:58:36,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-07-21 11:58:36,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/461cf4ec6/406b1b212b8b4a8f9759bb54960bf0a7/FLAG38e261c3b [2022-07-21 11:58:36,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/461cf4ec6/406b1b212b8b4a8f9759bb54960bf0a7 [2022-07-21 11:58:36,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:58:36,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:58:36,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:58:36,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:58:36,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:58:36,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:58:36" (1/1) ... [2022-07-21 11:58:36,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393e9096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:36, skipping insertion in model container [2022-07-21 11:58:36,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:58:36" (1/1) ... [2022-07-21 11:58:36,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:58:36,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:58:38,796 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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2022-07-21 11:58:38,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:58:38,943 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 11:58:39,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:58:39,309 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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2022-07-21 11:58:39,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:58:39,372 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:58:39,754 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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2022-07-21 11:58:39,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:58:39,914 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:58:39,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:39 WrapperNode [2022-07-21 11:58:39,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:58:39,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:58:39,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:58:39,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:58:39,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:39" (1/1) ... [2022-07-21 11:58:40,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:39" (1/1) ... [2022-07-21 11:58:40,230 INFO L137 Inliner]: procedures = 312, calls = 3660, calls flagged for inlining = 139, calls inlined = 96, statements flattened = 4731 [2022-07-21 11:58:40,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:58:40,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:58:40,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:58:40,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:58:40,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:39" (1/1) ... [2022-07-21 11:58:40,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:39" (1/1) ... [2022-07-21 11:58:40,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:39" (1/1) ... [2022-07-21 11:58:40,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:39" (1/1) ... [2022-07-21 11:58:40,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:39" (1/1) ... [2022-07-21 11:58:40,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:39" (1/1) ... [2022-07-21 11:58:40,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:39" (1/1) ... [2022-07-21 11:58:40,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:58:40,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:58:40,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:58:40,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:58:40,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:39" (1/1) ... [2022-07-21 11:58:40,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:58:40,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:58:40,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 11:58:40,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 11:58:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 11:58:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure rio_uevent [2022-07-21 11:58:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_uevent [2022-07-21 11:58:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-07-21 11:58:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-07-21 11:58:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 11:58:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 11:58:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 11:58:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:58:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:58:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 11:58:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 11:58:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:58:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:58:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-07-21 11:58:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-07-21 11:58:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-07-21 11:58:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-07-21 11:58:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-07-21 11:58:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-07-21 11:58:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 11:58:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 11:58:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:58:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:58:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_16 [2022-07-21 11:58:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_16 [2022-07-21 11:58:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 11:58:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 11:58:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_remove [2022-07-21 11:58:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_remove [2022-07-21 11:58:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:58:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:58:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 11:58:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 11:58:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-07-21 11:58:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-07-21 11:58:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure disc_work_handler [2022-07-21 11:58:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure disc_work_handler [2022-07-21 11:58:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:58:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~X~~u16~0~X~~u8~0~X~~u32~0~X~C_INT~X~~u32~0~TO~C_INT [2022-07-21 11:58:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~X~~u16~0~X~~u8~0~X~~u32~0~X~C_INT~X~~u32~0~TO~C_INT [2022-07-21 11:58:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_put [2022-07-21 11:58:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_put [2022-07-21 11:58:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:58:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-07-21 11:58:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-07-21 11:58:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 11:58:40,570 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 11:58:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 11:58:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 11:58:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 11:58:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_16 [2022-07-21 11:58:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_16 [2022-07-21 11:58:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 11:58:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:58:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:58:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_read_config_32 [2022-07-21 11:58:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_read_config_32 [2022-07-21 11:58:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-21 11:58:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 11:58:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_write_config_32 [2022-07-21 11:58:40,573 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_write_config_32 [2022-07-21 11:58:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 11:58:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 11:58:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-07-21 11:58:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-07-21 11:58:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-21 11:58:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-21 11:58:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure rio_name [2022-07-21 11:58:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_name [2022-07-21 11:58:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-21 11:58:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-21 11:58:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_probe [2022-07-21 11:58:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_probe [2022-07-21 11:58:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-21 11:58:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-21 11:58:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_32 [2022-07-21 11:58:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_32 [2022-07-21 11:58:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-07-21 11:58:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-07-21 11:58:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_get [2022-07-21 11:58:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_get [2022-07-21 11:58:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~X~~u16~0~X~~u8~0~X~~u32~0~X~C_INT~X~$Pointer$~TO~C_INT [2022-07-21 11:58:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~X~~u16~0~X~~u8~0~X~~u32~0~X~C_INT~X~$Pointer$~TO~C_INT [2022-07-21 11:58:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 11:58:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 11:58:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~C_INT [2022-07-21 11:58:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~C_INT [2022-07-21 11:58:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:58:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:58:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-21 11:58:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-21 11:58:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:58:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-21 11:58:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-21 11:58:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:58:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:58:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 11:58:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2022-07-21 11:58:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2022-07-21 11:58:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_8 [2022-07-21 11:58:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_8 [2022-07-21 11:58:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_bus [2022-07-21 11:58:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_bus [2022-07-21 11:58:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_32 [2022-07-21 11:58:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_32 [2022-07-21 11:58:40,582 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-07-21 11:58:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-07-21 11:58:40,582 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_device [2022-07-21 11:58:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_device [2022-07-21 11:58:40,583 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-21 11:58:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-21 11:58:40,585 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_8 [2022-07-21 11:58:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_8 [2022-07-21 11:58:40,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:58:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:58:41,288 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:58:41,290 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:58:41,763 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:58:50,738 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:58:50,752 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:58:50,753 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 11:58:50,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:58:50 BoogieIcfgContainer [2022-07-21 11:58:50,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:58:50,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:58:50,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:58:50,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:58:50,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:58:36" (1/3) ... [2022-07-21 11:58:50,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d21bfd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:58:50, skipping insertion in model container [2022-07-21 11:58:50,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:58:39" (2/3) ... [2022-07-21 11:58:50,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d21bfd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:58:50, skipping insertion in model container [2022-07-21 11:58:50,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:58:50" (3/3) ... [2022-07-21 11:58:50,764 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-07-21 11:58:50,777 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:58:50,777 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:58:50,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:58:50,843 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@28083a0f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1bb7442e [2022-07-21 11:58:50,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:58:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 914 states, 670 states have (on average 1.3761194029850747) internal successors, (922), 701 states have internal predecessors, (922), 196 states have call successors, (196), 47 states have call predecessors, (196), 46 states have return successors, (176), 175 states have call predecessors, (176), 176 states have call successors, (176) [2022-07-21 11:58:50,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 11:58:50,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:58:50,871 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 11:58:50,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:58:50,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:58:50,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1330153297, now seen corresponding path program 1 times [2022-07-21 11:58:50,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:58:50,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434351070] [2022-07-21 11:58:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:58:50,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:58:50,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:58:50,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:58:50,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 11:59:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:59:05,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 3234 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 11:59:05,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:59:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-21 11:59:05,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:59:05,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:59:05,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434351070] [2022-07-21 11:59:05,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434351070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:59:05,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:59:05,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 11:59:05,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840348783] [2022-07-21 11:59:05,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:59:05,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 11:59:05,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:59:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 11:59:05,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 11:59:05,661 INFO L87 Difference]: Start difference. First operand has 914 states, 670 states have (on average 1.3761194029850747) internal successors, (922), 701 states have internal predecessors, (922), 196 states have call successors, (196), 47 states have call predecessors, (196), 46 states have return successors, (176), 175 states have call predecessors, (176), 176 states have call successors, (176) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 11:59:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:59:05,782 INFO L93 Difference]: Finished difference Result 1823 states and 2664 transitions. [2022-07-21 11:59:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 11:59:05,784 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 84 [2022-07-21 11:59:05,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:59:05,807 INFO L225 Difference]: With dead ends: 1823 [2022-07-21 11:59:05,808 INFO L226 Difference]: Without dead ends: 887 [2022-07-21 11:59:05,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 11:59:05,820 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:59:05,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:59:05,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-07-21 11:59:05,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887. [2022-07-21 11:59:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 665 states have (on average 1.344360902255639) internal successors, (894), 674 states have internal predecessors, (894), 176 states have call successors, (176), 46 states have call predecessors, (176), 45 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2022-07-21 11:59:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1244 transitions. [2022-07-21 11:59:05,923 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1244 transitions. Word has length 84 [2022-07-21 11:59:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:59:05,923 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1244 transitions. [2022-07-21 11:59:05,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 11:59:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1244 transitions. [2022-07-21 11:59:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 11:59:05,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:59:05,927 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 11:59:06,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 11:59:06,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:59:06,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:59:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:59:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1244223321, now seen corresponding path program 1 times [2022-07-21 11:59:06,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:59:06,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381715706] [2022-07-21 11:59:06,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:59:06,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:59:06,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:59:06,156 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:59:06,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 11:59:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:59:20,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 3234 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:59:20,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:59:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 11:59:20,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:59:20,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:59:20,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381715706] [2022-07-21 11:59:20,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381715706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:59:20,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:59:20,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:59:20,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063525983] [2022-07-21 11:59:20,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:59:21,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:59:21,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:59:21,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:59:21,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:59:21,001 INFO L87 Difference]: Start difference. First operand 887 states and 1244 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 11:59:21,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:59:21,439 INFO L93 Difference]: Finished difference Result 2612 states and 3667 transitions. [2022-07-21 11:59:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:59:21,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2022-07-21 11:59:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:59:21,451 INFO L225 Difference]: With dead ends: 2612 [2022-07-21 11:59:21,451 INFO L226 Difference]: Without dead ends: 1737 [2022-07-21 11:59:21,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:59:21,457 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1191 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:59:21,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 2641 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 11:59:21,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2022-07-21 11:59:21,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1734. [2022-07-21 11:59:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1302 states have (on average 1.34715821812596) internal successors, (1754), 1319 states have internal predecessors, (1754), 341 states have call successors, (341), 91 states have call predecessors, (341), 90 states have return successors, (339), 337 states have call predecessors, (339), 339 states have call successors, (339) [2022-07-21 11:59:21,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2434 transitions. [2022-07-21 11:59:21,606 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2434 transitions. Word has length 84 [2022-07-21 11:59:21,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:59:21,608 INFO L495 AbstractCegarLoop]: Abstraction has 1734 states and 2434 transitions. [2022-07-21 11:59:21,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 11:59:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2434 transitions. [2022-07-21 11:59:21,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 11:59:21,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:59:21,621 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 11:59:21,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 11:59:21,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:59:21,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:59:21,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:59:21,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1059971624, now seen corresponding path program 1 times [2022-07-21 11:59:21,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:59:21,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586725767] [2022-07-21 11:59:21,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:59:21,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:59:21,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:59:21,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:59:21,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 11:59:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:59:36,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 3260 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:59:36,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:59:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 11:59:37,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:59:37,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:59:37,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586725767] [2022-07-21 11:59:37,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586725767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:59:37,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:59:37,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 11:59:37,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707815064] [2022-07-21 11:59:37,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:59:37,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:59:37,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:59:37,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:59:37,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:59:37,088 INFO L87 Difference]: Start difference. First operand 1734 states and 2434 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 11:59:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:59:37,224 INFO L93 Difference]: Finished difference Result 5175 states and 7335 transitions. [2022-07-21 11:59:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:59:37,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 90 [2022-07-21 11:59:37,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:59:37,246 INFO L225 Difference]: With dead ends: 5175 [2022-07-21 11:59:37,246 INFO L226 Difference]: Without dead ends: 3450 [2022-07-21 11:59:37,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:59:37,261 INFO L413 NwaCegarLoop]: 1428 mSDtfsCounter, 1191 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:59:37,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 2668 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:59:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2022-07-21 11:59:37,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 3446. [2022-07-21 11:59:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3446 states, 2589 states have (on average 1.347238315952105) internal successors, (3488), 2622 states have internal predecessors, (3488), 676 states have call successors, (676), 181 states have call predecessors, (676), 180 states have return successors, (708), 670 states have call predecessors, (708), 674 states have call successors, (708) [2022-07-21 11:59:37,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 4872 transitions. [2022-07-21 11:59:37,443 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 4872 transitions. Word has length 90 [2022-07-21 11:59:37,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:59:37,443 INFO L495 AbstractCegarLoop]: Abstraction has 3446 states and 4872 transitions. [2022-07-21 11:59:37,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 11:59:37,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 4872 transitions. [2022-07-21 11:59:37,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 11:59:37,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:59:37,454 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 11:59:37,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 11:59:37,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:59:37,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:59:37,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:59:37,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1482268491, now seen corresponding path program 1 times [2022-07-21 11:59:37,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:59:37,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667996412] [2022-07-21 11:59:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:59:37,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:59:37,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:59:37,674 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:59:37,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 11:59:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:59:51,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:59:51,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:59:51,509 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 11:59:51,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:59:51,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:59:51,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667996412] [2022-07-21 11:59:51,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667996412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:59:51,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:59:51,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:59:51,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627329295] [2022-07-21 11:59:51,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:59:51,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:59:51,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:59:51,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:59:51,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:59:51,512 INFO L87 Difference]: Start difference. First operand 3446 states and 4872 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 11:59:51,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:59:51,981 INFO L93 Difference]: Finished difference Result 10206 states and 14403 transitions. [2022-07-21 11:59:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:59:51,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 117 [2022-07-21 11:59:51,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:59:52,021 INFO L225 Difference]: With dead ends: 10206 [2022-07-21 11:59:52,022 INFO L226 Difference]: Without dead ends: 6772 [2022-07-21 11:59:52,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:59:52,039 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 1187 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:59:52,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 2617 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 11:59:52,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2022-07-21 11:59:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6760. [2022-07-21 11:59:52,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6760 states, 5079 states have (on average 1.3443591258121677) internal successors, (6828), 5146 states have internal predecessors, (6828), 1320 states have call successors, (1320), 361 states have call predecessors, (1320), 360 states have return successors, (1384), 1308 states have call predecessors, (1384), 1318 states have call successors, (1384) [2022-07-21 11:59:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6760 states to 6760 states and 9532 transitions. [2022-07-21 11:59:52,333 INFO L78 Accepts]: Start accepts. Automaton has 6760 states and 9532 transitions. Word has length 117 [2022-07-21 11:59:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:59:52,335 INFO L495 AbstractCegarLoop]: Abstraction has 6760 states and 9532 transitions. [2022-07-21 11:59:52,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 11:59:52,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6760 states and 9532 transitions. [2022-07-21 11:59:52,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-21 11:59:52,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:59:52,339 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:59:52,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 11:59:52,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:59:52,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:59:52,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:59:52,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1308063919, now seen corresponding path program 1 times [2022-07-21 11:59:52,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:59:52,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076284264] [2022-07-21 11:59:52,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:59:52,569 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:59:52,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:59:52,571 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:59:52,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 12:00:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:00:06,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 3444 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:00:06,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:00:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 12:00:07,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:00:07,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:00:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076284264] [2022-07-21 12:00:07,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076284264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:00:07,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:00:07,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:00:07,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313085228] [2022-07-21 12:00:07,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:00:07,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:00:07,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:00:07,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:00:07,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:00:07,026 INFO L87 Difference]: Start difference. First operand 6760 states and 9532 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 12:00:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:00:07,626 INFO L93 Difference]: Finished difference Result 19672 states and 27683 transitions. [2022-07-21 12:00:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:00:07,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 129 [2022-07-21 12:00:07,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:00:07,729 INFO L225 Difference]: With dead ends: 19672 [2022-07-21 12:00:07,730 INFO L226 Difference]: Without dead ends: 12924 [2022-07-21 12:00:07,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:00:07,770 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1171 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:00:07,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 2809 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:00:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12924 states. [2022-07-21 12:00:08,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12924 to 12908. [2022-07-21 12:00:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12908 states, 9683 states have (on average 1.3388412682020034) internal successors, (12964), 9806 states have internal predecessors, (12964), 2528 states have call successors, (2528), 697 states have call predecessors, (2528), 696 states have return successors, (2652), 2508 states have call predecessors, (2652), 2526 states have call successors, (2652) [2022-07-21 12:00:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12908 states to 12908 states and 18144 transitions. [2022-07-21 12:00:08,416 INFO L78 Accepts]: Start accepts. Automaton has 12908 states and 18144 transitions. Word has length 129 [2022-07-21 12:00:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:00:08,417 INFO L495 AbstractCegarLoop]: Abstraction has 12908 states and 18144 transitions. [2022-07-21 12:00:08,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 12:00:08,418 INFO L276 IsEmpty]: Start isEmpty. Operand 12908 states and 18144 transitions. [2022-07-21 12:00:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-21 12:00:08,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:00:08,423 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:00:08,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 12:00:08,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:00:08,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:00:08,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:00:08,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1772618993, now seen corresponding path program 1 times [2022-07-21 12:00:08,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:00:08,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124367821] [2022-07-21 12:00:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:00:08,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:00:08,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:00:08,648 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:00:08,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 12:00:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:00:25,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 3542 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:00:25,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:00:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 12:00:25,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:00:25,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:00:25,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124367821] [2022-07-21 12:00:25,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124367821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:00:25,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:00:25,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:00:25,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047672700] [2022-07-21 12:00:25,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:00:25,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:00:25,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:00:25,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:00:25,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:00:25,509 INFO L87 Difference]: Start difference. First operand 12908 states and 18144 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:00:26,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:00:26,358 INFO L93 Difference]: Finished difference Result 35140 states and 49263 transitions. [2022-07-21 12:00:26,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:00:26,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 165 [2022-07-21 12:00:26,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:00:26,492 INFO L225 Difference]: With dead ends: 35140 [2022-07-21 12:00:26,493 INFO L226 Difference]: Without dead ends: 22244 [2022-07-21 12:00:26,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:00:26,567 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 920 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:00:26,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 2845 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:00:26,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22244 states. [2022-07-21 12:00:27,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22244 to 22232. [2022-07-21 12:00:27,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22232 states, 16719 states have (on average 1.3369220647167892) internal successors, (22352), 16886 states have internal predecessors, (22352), 4306 states have call successors, (4306), 1207 states have call predecessors, (4306), 1206 states have return successors, (4450), 4266 states have call predecessors, (4450), 4304 states have call successors, (4450) [2022-07-21 12:00:27,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22232 states to 22232 states and 31108 transitions. [2022-07-21 12:00:27,521 INFO L78 Accepts]: Start accepts. Automaton has 22232 states and 31108 transitions. Word has length 165 [2022-07-21 12:00:27,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:00:27,523 INFO L495 AbstractCegarLoop]: Abstraction has 22232 states and 31108 transitions. [2022-07-21 12:00:27,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:00:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand 22232 states and 31108 transitions. [2022-07-21 12:00:27,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-21 12:00:27,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:00:27,536 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:00:27,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 12:00:27,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:00:27,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:00:27,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:00:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash 961848686, now seen corresponding path program 1 times [2022-07-21 12:00:27,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:00:27,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537515396] [2022-07-21 12:00:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:00:27,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:00:27,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:00:27,762 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:00:27,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 12:00:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:00:43,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 3689 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:00:43,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:00:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-07-21 12:00:43,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:00:43,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:00:43,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537515396] [2022-07-21 12:00:43,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537515396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:00:43,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:00:43,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:00:43,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034850408] [2022-07-21 12:00:43,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:00:43,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:00:43,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:00:43,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:00:43,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:00:43,575 INFO L87 Difference]: Start difference. First operand 22232 states and 31108 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 12:00:44,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:00:44,349 INFO L93 Difference]: Finished difference Result 33987 states and 47573 transitions. [2022-07-21 12:00:44,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 12:00:44,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 208 [2022-07-21 12:00:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:00:44,405 INFO L225 Difference]: With dead ends: 33987 [2022-07-21 12:00:44,405 INFO L226 Difference]: Without dead ends: 11719 [2022-07-21 12:00:44,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 12:00:44,468 INFO L413 NwaCegarLoop]: 1244 mSDtfsCounter, 21 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4963 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:00:44,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4963 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:00:44,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11719 states. [2022-07-21 12:00:45,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11719 to 11668. [2022-07-21 12:00:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11668 states, 8769 states have (on average 1.334929866575436) internal successors, (11706), 8860 states have internal predecessors, (11706), 2275 states have call successors, (2275), 624 states have call predecessors, (2275), 623 states have return successors, (2346), 2247 states have call predecessors, (2346), 2273 states have call successors, (2346) [2022-07-21 12:00:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11668 states to 11668 states and 16327 transitions. [2022-07-21 12:00:45,262 INFO L78 Accepts]: Start accepts. Automaton has 11668 states and 16327 transitions. Word has length 208 [2022-07-21 12:00:45,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:00:45,267 INFO L495 AbstractCegarLoop]: Abstraction has 11668 states and 16327 transitions. [2022-07-21 12:00:45,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 12:00:45,268 INFO L276 IsEmpty]: Start isEmpty. Operand 11668 states and 16327 transitions. [2022-07-21 12:00:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-21 12:00:45,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:00:45,297 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:00:45,498 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forcibly destroying the process [2022-07-21 12:00:45,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 12:00:45,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:00:45,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:00:45,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:00:45,520 INFO L85 PathProgramCache]: Analyzing trace with hash 303639209, now seen corresponding path program 1 times [2022-07-21 12:00:45,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:00:45,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89446075] [2022-07-21 12:00:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:00:45,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:00:45,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:00:45,528 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:00:45,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 12:01:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:01:00,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 3695 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:01:00,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:01:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-07-21 12:01:00,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:01:00,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:01:00,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89446075] [2022-07-21 12:01:00,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89446075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:01:00,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:01:00,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:01:00,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197526740] [2022-07-21 12:01:00,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:01:00,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:01:00,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:01:00,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:01:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:01:00,425 INFO L87 Difference]: Start difference. First operand 11668 states and 16327 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 12:01:01,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:01:01,050 INFO L93 Difference]: Finished difference Result 28412 states and 39780 transitions. [2022-07-21 12:01:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:01:01,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 210 [2022-07-21 12:01:01,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:01:01,118 INFO L225 Difference]: With dead ends: 28412 [2022-07-21 12:01:01,118 INFO L226 Difference]: Without dead ends: 17189 [2022-07-21 12:01:01,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:01:01,153 INFO L413 NwaCegarLoop]: 1985 mSDtfsCounter, 1178 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:01:01,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 3193 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:01:01,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17189 states. [2022-07-21 12:01:01,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17189 to 17172. [2022-07-21 12:01:01,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17172 states, 12941 states have (on average 1.3347500193184452) internal successors, (17273), 13072 states have internal predecessors, (17273), 3313 states have call successors, (3313), 918 states have call predecessors, (3313), 917 states have return successors, (3417), 3273 states have call predecessors, (3417), 3311 states have call successors, (3417) [2022-07-21 12:01:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17172 states to 17172 states and 24003 transitions. [2022-07-21 12:01:01,736 INFO L78 Accepts]: Start accepts. Automaton has 17172 states and 24003 transitions. Word has length 210 [2022-07-21 12:01:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:01:01,737 INFO L495 AbstractCegarLoop]: Abstraction has 17172 states and 24003 transitions. [2022-07-21 12:01:01,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 12:01:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 17172 states and 24003 transitions. [2022-07-21 12:01:01,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-21 12:01:01,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:01:01,750 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:01:01,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 12:01:01,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:01:01,972 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:01:01,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:01:01,972 INFO L85 PathProgramCache]: Analyzing trace with hash 913834821, now seen corresponding path program 1 times [2022-07-21 12:01:01,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:01:01,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384698946] [2022-07-21 12:01:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:01:01,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:01:01,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:01:01,979 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:01:01,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 12:01:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:01:15,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 3719 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:01:15,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:01:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-21 12:01:16,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:01:16,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:01:16,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384698946] [2022-07-21 12:01:16,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384698946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:01:16,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:01:16,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:01:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545778519] [2022-07-21 12:01:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:01:16,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:01:16,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:01:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:01:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:01:16,177 INFO L87 Difference]: Start difference. First operand 17172 states and 24003 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 12:01:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:01:17,111 INFO L93 Difference]: Finished difference Result 42006 states and 58753 transitions. [2022-07-21 12:01:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:01:17,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 222 [2022-07-21 12:01:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:01:17,302 INFO L225 Difference]: With dead ends: 42006 [2022-07-21 12:01:17,302 INFO L226 Difference]: Without dead ends: 25279 [2022-07-21 12:01:17,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:01:17,352 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 1162 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 3179 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:01:17,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 3179 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:01:17,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25279 states. [2022-07-21 12:01:18,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25279 to 25242. [2022-07-21 12:01:18,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25242 states, 19075 states have (on average 1.3344692005242464) internal successors, (25455), 19260 states have internal predecessors, (25455), 4823 states have call successors, (4823), 1344 states have call predecessors, (4823), 1343 states have return successors, (4974), 4767 states have call predecessors, (4974), 4821 states have call successors, (4974) [2022-07-21 12:01:18,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25242 states to 25242 states and 35252 transitions. [2022-07-21 12:01:18,304 INFO L78 Accepts]: Start accepts. Automaton has 25242 states and 35252 transitions. Word has length 222 [2022-07-21 12:01:18,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:01:18,306 INFO L495 AbstractCegarLoop]: Abstraction has 25242 states and 35252 transitions. [2022-07-21 12:01:18,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 12:01:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 25242 states and 35252 transitions. [2022-07-21 12:01:18,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-21 12:01:18,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:01:18,330 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:01:18,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 12:01:18,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:01:18,552 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:01:18,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:01:18,552 INFO L85 PathProgramCache]: Analyzing trace with hash -723866641, now seen corresponding path program 1 times [2022-07-21 12:01:18,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:01:18,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130298382] [2022-07-21 12:01:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:01:18,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:01:18,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:01:18,560 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:01:18,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 12:01:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:01:33,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 3754 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 12:01:33,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:01:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-21 12:01:34,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:01:34,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:01:34,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130298382] [2022-07-21 12:01:34,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130298382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:01:34,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:01:34,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:01:34,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633072575] [2022-07-21 12:01:34,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:01:34,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:01:34,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:01:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:01:34,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:01:34,045 INFO L87 Difference]: Start difference. First operand 25242 states and 35252 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:01:35,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:01:35,299 INFO L93 Difference]: Finished difference Result 58786 states and 82094 transitions. [2022-07-21 12:01:35,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 12:01:35,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 229 [2022-07-21 12:01:35,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:01:35,459 INFO L225 Difference]: With dead ends: 58786 [2022-07-21 12:01:35,460 INFO L226 Difference]: Without dead ends: 33989 [2022-07-21 12:01:35,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 12:01:35,654 INFO L413 NwaCegarLoop]: 2436 mSDtfsCounter, 1234 mSDsluCounter, 8474 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 10910 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:01:35,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 10910 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 12:01:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33989 states. [2022-07-21 12:01:36,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33989 to 25334. [2022-07-21 12:01:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25334 states, 19143 states have (on average 1.333281094917202) internal successors, (25523), 19340 states have internal predecessors, (25523), 4835 states have call successors, (4835), 1344 states have call predecessors, (4835), 1355 states have return successors, (5002), 4791 states have call predecessors, (5002), 4833 states have call successors, (5002) [2022-07-21 12:01:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25334 states to 25334 states and 35360 transitions. [2022-07-21 12:01:36,774 INFO L78 Accepts]: Start accepts. Automaton has 25334 states and 35360 transitions. Word has length 229 [2022-07-21 12:01:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:01:36,778 INFO L495 AbstractCegarLoop]: Abstraction has 25334 states and 35360 transitions. [2022-07-21 12:01:36,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:01:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 25334 states and 35360 transitions. [2022-07-21 12:01:36,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-21 12:01:36,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:01:36,796 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:01:36,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 12:01:37,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:01:37,016 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:01:37,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:01:37,016 INFO L85 PathProgramCache]: Analyzing trace with hash 19633893, now seen corresponding path program 1 times [2022-07-21 12:01:37,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:01:37,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452521081] [2022-07-21 12:01:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:01:37,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:01:37,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:01:37,023 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:01:37,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 12:01:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:01:54,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 3817 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 12:01:54,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:01:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-07-21 12:01:54,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:01:54,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:01:54,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452521081] [2022-07-21 12:01:54,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452521081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:01:54,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:01:54,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:01:54,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606637757] [2022-07-21 12:01:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:01:54,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:01:54,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:01:54,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:01:54,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:01:54,185 INFO L87 Difference]: Start difference. First operand 25334 states and 35360 transitions. Second operand has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-21 12:01:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:01:54,972 INFO L93 Difference]: Finished difference Result 50878 states and 71092 transitions. [2022-07-21 12:01:54,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 12:01:54,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 258 [2022-07-21 12:01:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:01:55,071 INFO L225 Difference]: With dead ends: 50878 [2022-07-21 12:01:55,071 INFO L226 Difference]: Without dead ends: 25371 [2022-07-21 12:01:55,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:01:55,135 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 6 mSDsluCounter, 4925 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6161 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:01:55,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6161 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:01:55,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25371 states. [2022-07-21 12:01:55,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25371 to 25371. [2022-07-21 12:01:55,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25371 states, 19180 states have (on average 1.332638164754953) internal successors, (25560), 19377 states have internal predecessors, (25560), 4835 states have call successors, (4835), 1344 states have call predecessors, (4835), 1355 states have return successors, (5002), 4791 states have call predecessors, (5002), 4833 states have call successors, (5002) [2022-07-21 12:01:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25371 states to 25371 states and 35397 transitions. [2022-07-21 12:01:55,962 INFO L78 Accepts]: Start accepts. Automaton has 25371 states and 35397 transitions. Word has length 258 [2022-07-21 12:01:55,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:01:55,963 INFO L495 AbstractCegarLoop]: Abstraction has 25371 states and 35397 transitions. [2022-07-21 12:01:55,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-21 12:01:55,964 INFO L276 IsEmpty]: Start isEmpty. Operand 25371 states and 35397 transitions. [2022-07-21 12:01:55,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-21 12:01:55,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:01:55,982 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:01:56,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 12:01:56,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:01:56,196 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:01:56,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:01:56,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1355053615, now seen corresponding path program 1 times [2022-07-21 12:01:56,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:01:56,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015915799] [2022-07-21 12:01:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:01:56,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:01:56,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:01:56,310 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:01:56,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 12:02:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:02:10,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 3828 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 12:02:10,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:02:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-07-21 12:02:10,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:02:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-07-21 12:02:11,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:02:11,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015915799] [2022-07-21 12:02:11,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015915799] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:02:11,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:02:11,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-21 12:02:11,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680415209] [2022-07-21 12:02:11,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:02:11,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 12:02:11,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:02:11,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 12:02:11,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-21 12:02:11,242 INFO L87 Difference]: Start difference. First operand 25371 states and 35397 transitions. Second operand has 11 states, 9 states have (on average 12.222222222222221) internal successors, (110), 11 states have internal predecessors, (110), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 12:02:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:02:12,111 INFO L93 Difference]: Finished difference Result 50952 states and 71166 transitions. [2022-07-21 12:02:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:02:12,113 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 12.222222222222221) internal successors, (110), 11 states have internal predecessors, (110), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 259 [2022-07-21 12:02:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:02:12,209 INFO L225 Difference]: With dead ends: 50952 [2022-07-21 12:02:12,209 INFO L226 Difference]: Without dead ends: 25408 [2022-07-21 12:02:12,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-21 12:02:12,278 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 9 mSDsluCounter, 8616 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9852 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:02:12,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9852 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:02:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25408 states. [2022-07-21 12:02:13,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25408 to 25408. [2022-07-21 12:02:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25408 states, 19217 states have (on average 1.3319977103606182) internal successors, (25597), 19414 states have internal predecessors, (25597), 4835 states have call successors, (4835), 1344 states have call predecessors, (4835), 1355 states have return successors, (5002), 4791 states have call predecessors, (5002), 4833 states have call successors, (5002) [2022-07-21 12:02:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25408 states to 25408 states and 35434 transitions. [2022-07-21 12:02:13,128 INFO L78 Accepts]: Start accepts. Automaton has 25408 states and 35434 transitions. Word has length 259 [2022-07-21 12:02:13,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:02:13,129 INFO L495 AbstractCegarLoop]: Abstraction has 25408 states and 35434 transitions. [2022-07-21 12:02:13,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 12.222222222222221) internal successors, (110), 11 states have internal predecessors, (110), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 12:02:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 25408 states and 35434 transitions. [2022-07-21 12:02:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-21 12:02:13,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:02:13,145 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:02:13,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 12:02:13,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:02:13,368 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:02:13,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:02:13,368 INFO L85 PathProgramCache]: Analyzing trace with hash -196607963, now seen corresponding path program 2 times [2022-07-21 12:02:13,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:02:13,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692777092] [2022-07-21 12:02:13,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:02:13,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:02:13,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:02:13,376 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:02:13,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 12:02:27,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:02:27,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:02:28,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 3238 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:02:28,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:02:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2022-07-21 12:02:28,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:02:28,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:02:28,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692777092] [2022-07-21 12:02:28,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692777092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:02:28,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:02:28,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:02:28,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269175910] [2022-07-21 12:02:28,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:02:28,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:02:28,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:02:28,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:02:28,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:02:28,916 INFO L87 Difference]: Start difference. First operand 25408 states and 35434 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 12:02:29,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:02:29,381 INFO L93 Difference]: Finished difference Result 47373 states and 65914 transitions. [2022-07-21 12:02:29,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:02:29,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 260 [2022-07-21 12:02:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:02:29,443 INFO L225 Difference]: With dead ends: 47373 [2022-07-21 12:02:29,443 INFO L226 Difference]: Without dead ends: 22412 [2022-07-21 12:02:29,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:02:29,504 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 921 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:02:29,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:02:29,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22412 states. [2022-07-21 12:02:30,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22412 to 22412. [2022-07-21 12:02:30,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22412 states, 17031 states have (on average 1.3286947331336973) internal successors, (22629), 17138 states have internal predecessors, (22629), 4201 states have call successors, (4201), 1168 states have call predecessors, (4201), 1179 states have return successors, (4256), 4157 states have call predecessors, (4256), 4199 states have call successors, (4256) [2022-07-21 12:02:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22412 states to 22412 states and 31086 transitions. [2022-07-21 12:02:30,230 INFO L78 Accepts]: Start accepts. Automaton has 22412 states and 31086 transitions. Word has length 260 [2022-07-21 12:02:30,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:02:30,231 INFO L495 AbstractCegarLoop]: Abstraction has 22412 states and 31086 transitions. [2022-07-21 12:02:30,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 12:02:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 22412 states and 31086 transitions. [2022-07-21 12:02:30,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-21 12:02:30,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:02:30,248 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:02:30,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 12:02:30,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:02:30,466 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:02:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:02:30,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1761985865, now seen corresponding path program 1 times [2022-07-21 12:02:30,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:02:30,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267662801] [2022-07-21 12:02:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:02:30,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:02:30,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:02:30,472 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:02:30,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process