./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.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 c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 01:11:07,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 01:11:07,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 01:11:07,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 01:11:07,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 01:11:07,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 01:11:07,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 01:11:07,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 01:11:07,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 01:11:07,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 01:11:07,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 01:11:07,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 01:11:07,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 01:11:07,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 01:11:07,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 01:11:07,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 01:11:08,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 01:11:08,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 01:11:08,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 01:11:08,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 01:11:08,009 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 01:11:08,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 01:11:08,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 01:11:08,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 01:11:08,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 01:11:08,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 01:11:08,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 01:11:08,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 01:11:08,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 01:11:08,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 01:11:08,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 01:11:08,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 01:11:08,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 01:11:08,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 01:11:08,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 01:11:08,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 01:11:08,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 01:11:08,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 01:11:08,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 01:11:08,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 01:11:08,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 01:11:08,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 01:11:08,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-23 01:11:08,056 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 01:11:08,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 01:11:08,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 01:11:08,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 01:11:08,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 01:11:08,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 01:11:08,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 01:11:08,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 01:11:08,061 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 01:11:08,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 01:11:08,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 01:11:08,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 01:11:08,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 01:11:08,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 01:11:08,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 01:11:08,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 01:11:08,063 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 01:11:08,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 01:11:08,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 01:11:08,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 01:11:08,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 01:11:08,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 01:11:08,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 01:11:08,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 01:11:08,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 01:11:08,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 01:11:08,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 01:11:08,066 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 01:11:08,066 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 01:11:08,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 01:11:08,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 [2022-07-23 01:11:08,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 01:11:08,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 01:11:08,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 01:11:08,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 01:11:08,322 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 01:11:08,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-23 01:11:08,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22b42bbc6/f0c0687037e54c07b2170ce585a666e2/FLAGaddeffef7 [2022-07-23 01:11:09,191 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 01:11:09,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-23 01:11:09,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22b42bbc6/f0c0687037e54c07b2170ce585a666e2/FLAGaddeffef7 [2022-07-23 01:11:09,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22b42bbc6/f0c0687037e54c07b2170ce585a666e2 [2022-07-23 01:11:09,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 01:11:09,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 01:11:09,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 01:11:09,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 01:11:09,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 01:11:09,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:11:09" (1/1) ... [2022-07-23 01:11:09,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a20fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:09, skipping insertion in model container [2022-07-23 01:11:09,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:11:09" (1/1) ... [2022-07-23 01:11:09,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 01:11:09,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 01:11:10,984 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-07-23 01:11:11,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:11:11,278 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 01:11:11,494 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: request_id = (int )(response_que.response_id >> 4) & 255 [6760] 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:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) 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) [2022-07-23 01:11:11,500 INFO L158 Benchmark]: Toolchain (without parser) took 2106.04ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 75.0MB in the beginning and 96.6MB in the end (delta: -21.7MB). Peak memory consumption was 63.5MB. Max. memory is 16.1GB. [2022-07-23 01:11:11,501 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory was 43.3MB in the beginning and 43.3MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 01:11:11,503 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2103.63ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 74.7MB in the beginning and 96.6MB in the end (delta: -21.9MB). Peak memory consumption was 63.5MB. Max. memory is 16.1GB. [2022-07-23 01:11:11,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory was 43.3MB in the beginning and 43.3MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2103.63ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 74.7MB in the beginning and 96.6MB in the end (delta: -21.9MB). Peak memory consumption was 63.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: request_id = (int )(response_que.response_id >> 4) & 255 [6760] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: request_id = (int )(response_que.response_id >> 4) & 255 [6760]: de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.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 c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 01:11:13,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 01:11:13,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 01:11:13,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 01:11:13,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 01:11:13,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 01:11:13,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 01:11:13,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 01:11:13,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 01:11:13,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 01:11:13,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 01:11:13,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 01:11:13,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 01:11:13,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 01:11:13,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 01:11:13,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 01:11:13,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 01:11:13,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 01:11:13,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 01:11:13,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 01:11:13,398 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 01:11:13,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 01:11:13,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 01:11:13,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 01:11:13,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 01:11:13,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 01:11:13,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 01:11:13,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 01:11:13,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 01:11:13,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 01:11:13,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 01:11:13,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 01:11:13,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 01:11:13,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 01:11:13,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 01:11:13,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 01:11:13,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 01:11:13,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 01:11:13,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 01:11:13,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 01:11:13,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 01:11:13,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 01:11:13,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-23 01:11:13,463 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 01:11:13,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 01:11:13,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 01:11:13,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 01:11:13,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 01:11:13,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 01:11:13,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 01:11:13,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 01:11:13,466 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 01:11:13,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 01:11:13,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 01:11:13,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 01:11:13,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 01:11:13,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 01:11:13,468 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 01:11:13,468 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 01:11:13,469 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 01:11:13,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 01:11:13,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 01:11:13,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 01:11:13,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 01:11:13,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 01:11:13,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 01:11:13,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 01:11:13,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 01:11:13,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 01:11:13,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 01:11:13,471 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 01:11:13,471 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 01:11:13,471 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 01:11:13,471 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 01:11:13,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 01:11:13,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 01:11:13,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 [2022-07-23 01:11:13,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 01:11:13,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 01:11:13,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 01:11:13,851 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 01:11:13,852 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 01:11:13,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-23 01:11:13,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2304c132/c0b54be3eca04eec93e22e512eee24f2/FLAG5ba4774ce [2022-07-23 01:11:14,752 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 01:11:14,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-23 01:11:14,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2304c132/c0b54be3eca04eec93e22e512eee24f2/FLAG5ba4774ce [2022-07-23 01:11:15,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2304c132/c0b54be3eca04eec93e22e512eee24f2 [2022-07-23 01:11:15,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 01:11:15,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 01:11:15,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 01:11:15,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 01:11:15,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 01:11:15,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:11:15" (1/1) ... [2022-07-23 01:11:15,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47796c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:15, skipping insertion in model container [2022-07-23 01:11:15,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:11:15" (1/1) ... [2022-07-23 01:11:15,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 01:11:15,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 01:11:17,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-07-23 01:11:17,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:11:17,355 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 01:11:17,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 01:11:17,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-07-23 01:11:17,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:11:17,710 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 01:11:18,002 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-07-23 01:11:18,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:11:18,176 INFO L208 MainTranslator]: Completed translation [2022-07-23 01:11:18,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:18 WrapperNode [2022-07-23 01:11:18,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 01:11:18,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 01:11:18,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 01:11:18,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 01:11:18,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:18" (1/1) ... [2022-07-23 01:11:18,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:18" (1/1) ... [2022-07-23 01:11:18,443 INFO L137 Inliner]: procedures = 320, calls = 2532, calls flagged for inlining = 126, calls inlined = 120, statements flattened = 5396 [2022-07-23 01:11:18,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 01:11:18,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 01:11:18,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 01:11:18,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 01:11:18,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:18" (1/1) ... [2022-07-23 01:11:18,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:18" (1/1) ... [2022-07-23 01:11:18,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:18" (1/1) ... [2022-07-23 01:11:18,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:18" (1/1) ... [2022-07-23 01:11:18,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:18" (1/1) ... [2022-07-23 01:11:18,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:18" (1/1) ... [2022-07-23 01:11:18,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:18" (1/1) ... [2022-07-23 01:11:18,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 01:11:18,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 01:11:18,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 01:11:18,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 01:11:18,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:18" (1/1) ... [2022-07-23 01:11:18,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 01:11:18,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 01:11:18,821 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) [2022-07-23 01:11:18,847 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 [2022-07-23 01:11:18,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-23 01:11:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-23 01:11:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-23 01:11:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-23 01:11:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 01:11:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-23 01:11:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-23 01:11:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-23 01:11:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-07-23 01:11:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-07-23 01:11:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-23 01:11:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-23 01:11:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-23 01:11:18,865 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-23 01:11:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-07-23 01:11:18,865 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-07-23 01:11:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-23 01:11:18,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-23 01:11:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure twa_get_request_id [2022-07-23 01:11:18,865 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_get_request_id [2022-07-23 01:11:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure twa_fill_sense [2022-07-23 01:11:18,866 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_fill_sense [2022-07-23 01:11:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2022-07-23 01:11:18,866 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2022-07-23 01:11:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-07-23 01:11:18,866 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-07-23 01:11:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_remove_host [2022-07-23 01:11:18,866 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_remove_host [2022-07-23 01:11:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-23 01:11:18,867 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-23 01:11:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-23 01:11:18,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-23 01:11:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_4 [2022-07-23 01:11:18,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_4 [2022-07-23 01:11:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-23 01:11:18,868 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-23 01:11:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-23 01:11:18,868 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-23 01:11:18,868 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-07-23 01:11:18,869 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-07-23 01:11:18,869 INFO L130 BoogieDeclarations]: Found specification of procedure twa_resume [2022-07-23 01:11:18,869 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_resume [2022-07-23 01:11:18,869 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-23 01:11:18,869 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-23 01:11:18,869 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sglist [2022-07-23 01:11:18,869 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sglist [2022-07-23 01:11:18,870 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-23 01:11:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-23 01:11:18,871 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-23 01:11:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-23 01:11:18,872 INFO L130 BoogieDeclarations]: Found specification of procedure twa_remove [2022-07-23 01:11:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_remove [2022-07-23 01:11:18,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 01:11:18,872 INFO L130 BoogieDeclarations]: Found specification of procedure twa_reset_sequence [2022-07-23 01:11:18,873 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_reset_sequence [2022-07-23 01:11:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-07-23 01:11:18,873 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-07-23 01:11:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 01:11:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure twa_get_param [2022-07-23 01:11:18,874 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_get_param [2022-07-23 01:11:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-07-23 01:11:18,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-07-23 01:11:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure twa_string_lookup [2022-07-23 01:11:18,874 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_string_lookup [2022-07-23 01:11:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-23 01:11:18,874 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-23 01:11:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-23 01:11:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-23 01:11:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-23 01:11:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 01:11:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 01:11:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-07-23 01:11:18,876 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-07-23 01:11:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-23 01:11:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-23 01:11:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-23 01:11:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-23 01:11:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure __twa_shutdown [2022-07-23 01:11:18,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __twa_shutdown [2022-07-23 01:11:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_twa_chrdev_mutex [2022-07-23 01:11:18,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_twa_chrdev_mutex [2022-07-23 01:11:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-23 01:11:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-07-23 01:11:18,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-07-23 01:11:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-07-23 01:11:18,878 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-07-23 01:11:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure twa_shutdown [2022-07-23 01:11:18,878 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_shutdown [2022-07-23 01:11:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure twa_post_command_packet [2022-07-23 01:11:18,879 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_post_command_packet [2022-07-23 01:11:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-23 01:11:18,879 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-23 01:11:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure twa_free_request_id [2022-07-23 01:11:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_free_request_id [2022-07-23 01:11:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-07-23 01:11:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-07-23 01:11:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_dma_unmap [2022-07-23 01:11:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_dma_unmap [2022-07-23 01:11:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure twa_decode_bits [2022-07-23 01:11:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_decode_bits [2022-07-23 01:11:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-23 01:11:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-23 01:11:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-07-23 01:11:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-07-23 01:11:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-23 01:11:18,882 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-23 01:11:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure pci_try_set_mwi [2022-07-23 01:11:18,882 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_try_set_mwi [2022-07-23 01:11:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-23 01:11:18,882 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-23 01:11:18,883 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-07-23 01:11:18,883 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-07-23 01:11:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure twa_initconnection [2022-07-23 01:11:18,885 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_initconnection [2022-07-23 01:11:18,886 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-07-23 01:11:18,886 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-07-23 01:11:18,887 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-23 01:11:18,888 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-23 01:11:18,888 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-07-23 01:11:18,888 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-07-23 01:11:18,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-23 01:11:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-23 01:11:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-23 01:11:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-23 01:11:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-23 01:11:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-23 01:11:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-23 01:11:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-23 01:11:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ioctl_lock_of_TAG_TW_Device_Extension [2022-07-23 01:11:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ioctl_lock_of_TAG_TW_Device_Extension [2022-07-23 01:11:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_msi_exact [2022-07-23 01:11:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_msi_exact [2022-07-23 01:11:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure twa_aen_queue_event [2022-07-23 01:11:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_aen_queue_event [2022-07-23 01:11:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 01:11:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure twa_interrupt [2022-07-23 01:11:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_interrupt [2022-07-23 01:11:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-23 01:11:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-23 01:11:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-23 01:11:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-23 01:11:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_count [2022-07-23 01:11:18,897 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_count [2022-07-23 01:11:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 01:11:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-23 01:11:18,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-23 01:11:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-07-23 01:11:18,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-07-23 01:11:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 01:11:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-23 01:11:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-23 01:11:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-23 01:11:18,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-23 01:11:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-23 01:11:18,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-23 01:11:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-23 01:11:18,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-07-23 01:11:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-07-23 01:11:18,899 INFO L130 BoogieDeclarations]: Found specification of procedure twa_allocate_memory [2022-07-23 01:11:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_allocate_memory [2022-07-23 01:11:18,899 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-07-23 01:11:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-07-23 01:11:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure twa_poll_response [2022-07-23 01:11:18,900 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_poll_response [2022-07-23 01:11:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_3 [2022-07-23 01:11:18,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_3 [2022-07-23 01:11:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ioctl_lock_of_TAG_TW_Device_Extension [2022-07-23 01:11:18,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ioctl_lock_of_TAG_TW_Device_Extension [2022-07-23 01:11:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure twa_scsiop_execute_scsi [2022-07-23 01:11:18,900 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_scsiop_execute_scsi [2022-07-23 01:11:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-07-23 01:11:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-07-23 01:11:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure twa_reset_device_extension [2022-07-23 01:11:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_reset_device_extension [2022-07-23 01:11:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure twa_free_device_extension [2022-07-23 01:11:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_free_device_extension [2022-07-23 01:11:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-07-23 01:11:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-07-23 01:11:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_twa_chrdev_mutex [2022-07-23 01:11:18,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_twa_chrdev_mutex [2022-07-23 01:11:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure twa_check_bits [2022-07-23 01:11:18,902 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_check_bits [2022-07-23 01:11:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-23 01:11:18,902 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-23 01:11:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-07-23 01:11:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-07-23 01:11:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-07-23 01:11:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-07-23 01:11:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-07-23 01:11:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-07-23 01:11:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-23 01:11:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-23 01:11:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-23 01:11:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure twa_aen_read_queue [2022-07-23 01:11:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_aen_read_queue [2022-07-23 01:11:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 01:11:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 01:11:19,717 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 01:11:19,720 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 01:11:19,953 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-23 01:12:15,888 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 01:12:15,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 01:12:15,905 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-23 01:12:15,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:12:15 BoogieIcfgContainer [2022-07-23 01:12:15,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 01:12:15,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 01:12:15,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 01:12:15,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 01:12:15,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:11:15" (1/3) ... [2022-07-23 01:12:15,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e23123e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:12:15, skipping insertion in model container [2022-07-23 01:12:15,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:11:18" (2/3) ... [2022-07-23 01:12:15,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e23123e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:12:15, skipping insertion in model container [2022-07-23 01:12:15,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:12:15" (3/3) ... [2022-07-23 01:12:15,917 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-23 01:12:15,930 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 01:12:15,930 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-23 01:12:16,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 01:12:16,037 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@4f24594d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b962787 [2022-07-23 01:12:16,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-23 01:12:16,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 1579 states, 1157 states have (on average 1.3785652549697494) internal successors, (1595), 1194 states have internal predecessors, (1595), 338 states have call successors, (338), 83 states have call predecessors, (338), 82 states have return successors, (328), 327 states have call predecessors, (328), 328 states have call successors, (328) [2022-07-23 01:12:16,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-23 01:12:16,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:12:16,071 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:12:16,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:12:16,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:12:16,076 INFO L85 PathProgramCache]: Analyzing trace with hash -650807549, now seen corresponding path program 1 times [2022-07-23 01:12:16,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:12:16,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878721573] [2022-07-23 01:12:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:12:16,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:12:16,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:12:16,100 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) [2022-07-23 01:12:16,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 01:12:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:12:19,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-23 01:12:19,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:12:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-23 01:12:19,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:12:19,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:12:19,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878721573] [2022-07-23 01:12:19,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878721573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:12:19,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:12:19,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:12:19,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501158487] [2022-07-23 01:12:19,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:12:19,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 01:12:19,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:12:19,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 01:12:19,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 01:12:19,109 INFO L87 Difference]: Start difference. First operand has 1579 states, 1157 states have (on average 1.3785652549697494) internal successors, (1595), 1194 states have internal predecessors, (1595), 338 states have call successors, (338), 83 states have call predecessors, (338), 82 states have return successors, (328), 327 states have call predecessors, (328), 328 states have call successors, (328) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-23 01:12:19,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:12:19,277 INFO L93 Difference]: Finished difference Result 3153 states and 4571 transitions. [2022-07-23 01:12:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 01:12:19,279 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 207 [2022-07-23 01:12:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:12:19,325 INFO L225 Difference]: With dead ends: 3153 [2022-07-23 01:12:19,325 INFO L226 Difference]: Without dead ends: 1562 [2022-07-23 01:12:19,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 01:12:19,355 INFO L413 NwaCegarLoop]: 2248 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, 2248 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 [2022-07-23 01:12:19,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 01:12:19,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-07-23 01:12:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1562. [2022-07-23 01:12:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1152 states have (on average 1.3689236111111112) internal successors, (1577), 1177 states have internal predecessors, (1577), 328 states have call successors, (328), 82 states have call predecessors, (328), 81 states have return successors, (318), 317 states have call predecessors, (318), 318 states have call successors, (318) [2022-07-23 01:12:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2223 transitions. [2022-07-23 01:12:19,565 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2223 transitions. Word has length 207 [2022-07-23 01:12:19,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:12:19,566 INFO L495 AbstractCegarLoop]: Abstraction has 1562 states and 2223 transitions. [2022-07-23 01:12:19,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-23 01:12:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2223 transitions. [2022-07-23 01:12:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-23 01:12:19,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:12:19,576 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:12:19,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-23 01:12:19,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:12:19,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:12:19,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:12:19,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1985613877, now seen corresponding path program 1 times [2022-07-23 01:12:19,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:12:19,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016176627] [2022-07-23 01:12:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:12:19,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:12:19,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:12:19,802 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) [2022-07-23 01:12:19,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 01:12:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:12:23,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 01:12:23,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:12:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-23 01:12:23,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:12:23,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:12:23,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016176627] [2022-07-23 01:12:23,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016176627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:12:23,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:12:23,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 01:12:23,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432041106] [2022-07-23 01:12:23,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:12:23,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 01:12:23,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:12:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 01:12:23,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 01:12:23,479 INFO L87 Difference]: Start difference. First operand 1562 states and 2223 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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) [2022-07-23 01:12:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:12:24,216 INFO L93 Difference]: Finished difference Result 3112 states and 4492 transitions. [2022-07-23 01:12:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 01:12:24,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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 207 [2022-07-23 01:12:24,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:12:24,228 INFO L225 Difference]: With dead ends: 3112 [2022-07-23 01:12:24,228 INFO L226 Difference]: Without dead ends: 1565 [2022-07-23 01:12:24,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-23 01:12:24,237 INFO L413 NwaCegarLoop]: 2212 mSDtfsCounter, 6 mSDsluCounter, 8812 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11024 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 01:12:24,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11024 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 01:12:24,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-07-23 01:12:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2022-07-23 01:12:24,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1154 states have (on average 1.3691507798960139) internal successors, (1580), 1180 states have internal predecessors, (1580), 328 states have call successors, (328), 82 states have call predecessors, (328), 82 states have return successors, (319), 317 states have call predecessors, (319), 318 states have call successors, (319) [2022-07-23 01:12:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2227 transitions. [2022-07-23 01:12:24,291 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2227 transitions. Word has length 207 [2022-07-23 01:12:24,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:12:24,292 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 2227 transitions. [2022-07-23 01:12:24,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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) [2022-07-23 01:12:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2227 transitions. [2022-07-23 01:12:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-23 01:12:24,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:12:24,295 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:12:24,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-23 01:12:24,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:12:24,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:12:24,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:12:24,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1158805767, now seen corresponding path program 1 times [2022-07-23 01:12:24,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:12:24,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813962512] [2022-07-23 01:12:24,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:12:24,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:12:24,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:12:24,516 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) [2022-07-23 01:12:24,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 01:12:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:12:28,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 01:12:28,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:12:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-07-23 01:12:28,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:12:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-07-23 01:12:29,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:12:29,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813962512] [2022-07-23 01:12:29,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813962512] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:12:29,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:12:29,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-23 01:12:29,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767852929] [2022-07-23 01:12:29,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:12:29,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 01:12:29,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:12:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 01:12:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-23 01:12:29,332 INFO L87 Difference]: Start difference. First operand 1565 states and 2227 transitions. Second operand has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-23 01:12:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:12:30,711 INFO L93 Difference]: Finished difference Result 3123 states and 4506 transitions. [2022-07-23 01:12:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 01:12:30,713 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 214 [2022-07-23 01:12:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:12:30,727 INFO L225 Difference]: With dead ends: 3123 [2022-07-23 01:12:30,728 INFO L226 Difference]: Without dead ends: 1573 [2022-07-23 01:12:30,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-23 01:12:30,741 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 10 mSDsluCounter, 15422 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17636 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-23 01:12:30,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 17636 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-23 01:12:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2022-07-23 01:12:30,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1571. [2022-07-23 01:12:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1158 states have (on average 1.3687392055267702) internal successors, (1585), 1184 states have internal predecessors, (1585), 329 states have call successors, (329), 83 states have call predecessors, (329), 83 states have return successors, (320), 318 states have call predecessors, (320), 319 states have call successors, (320) [2022-07-23 01:12:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2234 transitions. [2022-07-23 01:12:30,806 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2234 transitions. Word has length 214 [2022-07-23 01:12:30,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:12:30,807 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 2234 transitions. [2022-07-23 01:12:30,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-23 01:12:30,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2234 transitions. [2022-07-23 01:12:30,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-23 01:12:30,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:12:30,811 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:12:30,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-23 01:12:31,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:12:31,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:12:31,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:12:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash -237312011, now seen corresponding path program 2 times [2022-07-23 01:12:31,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:12:31,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664044912] [2022-07-23 01:12:31,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:12:31,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:12:31,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:12:31,043 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) [2022-07-23 01:12:31,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 01:12:33,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:12:33,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:12:33,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:12:33,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:12:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-23 01:12:33,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:12:33,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:12:33,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664044912] [2022-07-23 01:12:33,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664044912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:12:33,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:12:33,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:12:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814190230] [2022-07-23 01:12:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:12:33,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:12:33,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:12:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:12:33,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:12:33,651 INFO L87 Difference]: Start difference. First operand 1571 states and 2234 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-23 01:12:34,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:12:34,311 INFO L93 Difference]: Finished difference Result 4542 states and 6480 transitions. [2022-07-23 01:12:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:12:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 221 [2022-07-23 01:12:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:12:34,339 INFO L225 Difference]: With dead ends: 4542 [2022-07-23 01:12:34,340 INFO L226 Difference]: Without dead ends: 3012 [2022-07-23 01:12:34,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:12:34,353 INFO L413 NwaCegarLoop]: 2688 mSDtfsCounter, 2143 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 4794 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 01:12:34,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 4794 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 01:12:34,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2022-07-23 01:12:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2972. [2022-07-23 01:12:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2208 states have (on average 1.375) internal successors, (3036), 2251 states have internal predecessors, (3036), 603 states have call successors, (603), 160 states have call predecessors, (603), 160 states have return successors, (614), 586 states have call predecessors, (614), 593 states have call successors, (614) [2022-07-23 01:12:34,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 4253 transitions. [2022-07-23 01:12:34,487 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 4253 transitions. Word has length 221 [2022-07-23 01:12:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:12:34,489 INFO L495 AbstractCegarLoop]: Abstraction has 2972 states and 4253 transitions. [2022-07-23 01:12:34,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-23 01:12:34,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 4253 transitions. [2022-07-23 01:12:34,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-23 01:12:34,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:12:34,492 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:12:34,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 01:12:34,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:12:34,719 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:12:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:12:34,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2094996992, now seen corresponding path program 1 times [2022-07-23 01:12:34,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:12:34,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851500901] [2022-07-23 01:12:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:12:34,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:12:34,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:12:34,727 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) [2022-07-23 01:12:34,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 01:12:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:12:38,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 3504 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 01:12:38,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:12:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 102 proven. 3 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2022-07-23 01:12:38,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:12:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2022-07-23 01:12:39,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:12:39,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851500901] [2022-07-23 01:12:39,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851500901] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:12:39,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:12:39,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-23 01:12:39,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256531413] [2022-07-23 01:12:39,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:12:39,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 01:12:39,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:12:39,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 01:12:39,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-23 01:12:39,939 INFO L87 Difference]: Start difference. First operand 2972 states and 4253 transitions. Second operand has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-23 01:12:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:12:41,616 INFO L93 Difference]: Finished difference Result 5942 states and 8636 transitions. [2022-07-23 01:12:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 01:12:41,617 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 221 [2022-07-23 01:12:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:12:41,641 INFO L225 Difference]: With dead ends: 5942 [2022-07-23 01:12:41,642 INFO L226 Difference]: Without dead ends: 2982 [2022-07-23 01:12:41,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-07-23 01:12:41,661 INFO L413 NwaCegarLoop]: 2215 mSDtfsCounter, 18 mSDsluCounter, 15428 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 17643 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:12:41,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 17643 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-23 01:12:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2022-07-23 01:12:41,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 2974. [2022-07-23 01:12:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2210 states have (on average 1.3755656108597285) internal successors, (3040), 2253 states have internal predecessors, (3040), 603 states have call successors, (603), 160 states have call predecessors, (603), 160 states have return successors, (614), 586 states have call predecessors, (614), 593 states have call successors, (614) [2022-07-23 01:12:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4257 transitions. [2022-07-23 01:12:41,763 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4257 transitions. Word has length 221 [2022-07-23 01:12:41,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:12:41,763 INFO L495 AbstractCegarLoop]: Abstraction has 2974 states and 4257 transitions. [2022-07-23 01:12:41,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-23 01:12:41,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4257 transitions. [2022-07-23 01:12:41,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-23 01:12:41,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:12:41,767 INFO L195 NwaCegarLoop]: trace histogram [21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:12:41,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-23 01:12:41,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:12:41,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:12:41,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:12:41,985 INFO L85 PathProgramCache]: Analyzing trace with hash 977688914, now seen corresponding path program 2 times [2022-07-23 01:12:41,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:12:41,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194549347] [2022-07-23 01:12:41,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:12:41,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:12:41,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:12:41,991 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) [2022-07-23 01:12:41,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 01:12:44,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:12:44,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:12:44,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:12:44,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:12:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-07-23 01:12:44,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:12:44,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:12:44,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194549347] [2022-07-23 01:12:44,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194549347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:12:44,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:12:44,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:12:44,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308170193] [2022-07-23 01:12:44,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:12:44,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:12:44,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:12:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:12:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:12:44,840 INFO L87 Difference]: Start difference. First operand 2974 states and 4257 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-23 01:12:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:12:45,419 INFO L93 Difference]: Finished difference Result 8812 states and 12625 transitions. [2022-07-23 01:12:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:12:45,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 228 [2022-07-23 01:12:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:12:45,467 INFO L225 Difference]: With dead ends: 8812 [2022-07-23 01:12:45,468 INFO L226 Difference]: Without dead ends: 5879 [2022-07-23 01:12:45,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:12:45,489 INFO L413 NwaCegarLoop]: 2540 mSDtfsCounter, 2143 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 01:12:45,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 4744 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 01:12:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2022-07-23 01:12:45,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5872. [2022-07-23 01:12:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 4375 states have (on average 1.3766857142857143) internal successors, (6023), 4452 states have internal predecessors, (6023), 1178 states have call successors, (1178), 317 states have call predecessors, (1178), 318 states have return successors, (1210), 1154 states have call predecessors, (1210), 1168 states have call successors, (1210) [2022-07-23 01:12:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 8411 transitions. [2022-07-23 01:12:45,751 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 8411 transitions. Word has length 228 [2022-07-23 01:12:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:12:45,752 INFO L495 AbstractCegarLoop]: Abstraction has 5872 states and 8411 transitions. [2022-07-23 01:12:45,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-23 01:12:45,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 8411 transitions. [2022-07-23 01:12:45,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-23 01:12:45,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:12:45,757 INFO L195 NwaCegarLoop]: trace histogram [21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:12:45,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-23 01:12:45,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:12:45,980 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:12:45,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:12:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1466196661, now seen corresponding path program 1 times [2022-07-23 01:12:45,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:12:45,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007665251] [2022-07-23 01:12:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:12:45,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:12:45,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:12:45,985 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) [2022-07-23 01:12:45,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 01:12:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:12:50,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 3686 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 01:12:50,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:12:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 144 proven. 6 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2022-07-23 01:12:50,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:12:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2022-07-23 01:12:52,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:12:52,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007665251] [2022-07-23 01:12:52,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007665251] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:12:52,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:12:52,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-23 01:12:52,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575543376] [2022-07-23 01:12:52,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:12:52,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-23 01:12:52,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:12:52,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-23 01:12:52,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-23 01:12:52,149 INFO L87 Difference]: Start difference. First operand 5872 states and 8411 transitions. Second operand has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 15 states have internal predecessors, (79), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-23 01:12:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:12:54,225 INFO L93 Difference]: Finished difference Result 11760 states and 17103 transitions. [2022-07-23 01:12:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 01:12:54,226 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 15 states have internal predecessors, (79), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 237 [2022-07-23 01:12:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:12:54,311 INFO L225 Difference]: With dead ends: 11760 [2022-07-23 01:12:54,312 INFO L226 Difference]: Without dead ends: 5900 [2022-07-23 01:12:54,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-07-23 01:12:54,341 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 29 mSDsluCounter, 17626 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 19842 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-23 01:12:54,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 19842 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-23 01:12:54,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2022-07-23 01:12:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 5876. [2022-07-23 01:12:54,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 4379 states have (on average 1.3772550810687372) internal successors, (6031), 4456 states have internal predecessors, (6031), 1178 states have call successors, (1178), 317 states have call predecessors, (1178), 318 states have return successors, (1210), 1154 states have call predecessors, (1210), 1168 states have call successors, (1210) [2022-07-23 01:12:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 8419 transitions. [2022-07-23 01:12:54,562 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 8419 transitions. Word has length 237 [2022-07-23 01:12:54,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:12:54,563 INFO L495 AbstractCegarLoop]: Abstraction has 5876 states and 8419 transitions. [2022-07-23 01:12:54,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 15 states have internal predecessors, (79), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-23 01:12:54,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 8419 transitions. [2022-07-23 01:12:54,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-07-23 01:12:54,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:12:54,568 INFO L195 NwaCegarLoop]: trace histogram [28, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:12:54,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-23 01:12:54,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:12:54,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:12:54,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:12:54,784 INFO L85 PathProgramCache]: Analyzing trace with hash -558060025, now seen corresponding path program 2 times [2022-07-23 01:12:54,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:12:54,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278553786] [2022-07-23 01:12:54,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:12:54,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:12:54,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:12:54,788 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) [2022-07-23 01:12:54,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-23 01:12:57,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:12:57,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:12:57,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:12:57,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:12:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2022-07-23 01:12:57,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:12:57,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:12:57,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278553786] [2022-07-23 01:12:57,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278553786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:12:57,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:12:57,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:12:57,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493212611] [2022-07-23 01:12:57,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:12:57,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:12:57,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:12:57,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:12:57,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:12:57,515 INFO L87 Difference]: Start difference. First operand 5876 states and 8419 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-07-23 01:12:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:12:58,253 INFO L93 Difference]: Finished difference Result 16732 states and 24039 transitions. [2022-07-23 01:12:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:12:58,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 244 [2022-07-23 01:12:58,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:12:58,332 INFO L225 Difference]: With dead ends: 16732 [2022-07-23 01:12:58,332 INFO L226 Difference]: Without dead ends: 10897 [2022-07-23 01:12:58,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:12:58,362 INFO L413 NwaCegarLoop]: 2524 mSDtfsCounter, 1956 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 4680 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 01:12:58,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 4680 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 01:12:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10897 states. [2022-07-23 01:12:58,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10897 to 10862. [2022-07-23 01:12:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10862 states, 8077 states have (on average 1.3771202179026867) internal successors, (11123), 8224 states have internal predecessors, (11123), 2180 states have call successors, (2180), 599 states have call predecessors, (2180), 604 states have return successors, (2330), 2142 states have call predecessors, (2330), 2170 states have call successors, (2330) [2022-07-23 01:12:58,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10862 states to 10862 states and 15633 transitions. [2022-07-23 01:12:58,825 INFO L78 Accepts]: Start accepts. Automaton has 10862 states and 15633 transitions. Word has length 244 [2022-07-23 01:12:58,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:12:58,826 INFO L495 AbstractCegarLoop]: Abstraction has 10862 states and 15633 transitions. [2022-07-23 01:12:58,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-07-23 01:12:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 10862 states and 15633 transitions. [2022-07-23 01:12:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-23 01:12:58,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:12:58,830 INFO L195 NwaCegarLoop]: trace histogram [28, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:12:58,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-23 01:12:59,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:12:59,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:12:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:12:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash 258270171, now seen corresponding path program 1 times [2022-07-23 01:12:59,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:12:59,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4686333] [2022-07-23 01:12:59,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:12:59,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:12:59,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:12:59,051 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) [2022-07-23 01:12:59,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-23 01:13:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:13:03,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 3731 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 01:13:03,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:13:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 459 proven. 10 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2022-07-23 01:13:04,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:13:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 31 proven. 165 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2022-07-23 01:13:05,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:13:05,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4686333] [2022-07-23 01:13:05,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4686333] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:13:05,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:13:05,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-23 01:13:05,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015567755] [2022-07-23 01:13:05,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:13:05,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-23 01:13:05,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:13:05,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-23 01:13:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-23 01:13:05,870 INFO L87 Difference]: Start difference. First operand 10862 states and 15633 transitions. Second operand has 17 states, 15 states have (on average 5.8) internal successors, (87), 17 states have internal predecessors, (87), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-23 01:13:08,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:13:08,150 INFO L93 Difference]: Finished difference Result 21777 states and 31928 transitions. [2022-07-23 01:13:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-23 01:13:08,151 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.8) internal successors, (87), 17 states have internal predecessors, (87), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 255 [2022-07-23 01:13:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:13:08,206 INFO L225 Difference]: With dead ends: 21777 [2022-07-23 01:13:08,206 INFO L226 Difference]: Without dead ends: 10940 [2022-07-23 01:13:08,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-07-23 01:13:08,284 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 62 mSDsluCounter, 19832 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 22048 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-23 01:13:08,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 22048 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-23 01:13:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10940 states. [2022-07-23 01:13:08,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10940 to 10878. [2022-07-23 01:13:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10878 states, 8092 states have (on average 1.3779041028175976) internal successors, (11150), 8239 states have internal predecessors, (11150), 2180 states have call successors, (2180), 600 states have call predecessors, (2180), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-23 01:13:08,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10878 states to 10878 states and 15661 transitions. [2022-07-23 01:13:08,715 INFO L78 Accepts]: Start accepts. Automaton has 10878 states and 15661 transitions. Word has length 255 [2022-07-23 01:13:08,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:13:08,716 INFO L495 AbstractCegarLoop]: Abstraction has 10878 states and 15661 transitions. [2022-07-23 01:13:08,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.8) internal successors, (87), 17 states have internal predecessors, (87), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-23 01:13:08,716 INFO L276 IsEmpty]: Start isEmpty. Operand 10878 states and 15661 transitions. [2022-07-23 01:13:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-23 01:13:08,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:13:08,719 INFO L195 NwaCegarLoop]: trace histogram [31, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:13:08,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-23 01:13:08,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:13:08,939 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:13:08,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:13:08,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1135204157, now seen corresponding path program 2 times [2022-07-23 01:13:08,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:13:08,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899958012] [2022-07-23 01:13:08,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:13:08,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:13:08,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:13:08,950 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) [2022-07-23 01:13:08,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-23 01:13:11,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:13:11,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:13:11,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:13:11,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:13:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2022-07-23 01:13:11,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:13:11,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:13:11,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899958012] [2022-07-23 01:13:11,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899958012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:13:11,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:13:11,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:13:11,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876110329] [2022-07-23 01:13:11,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:13:11,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:13:11,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:13:11,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:13:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:13:11,455 INFO L87 Difference]: Start difference. First operand 10878 states and 15661 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:13:12,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:13:12,002 INFO L93 Difference]: Finished difference Result 10904 states and 15693 transitions. [2022-07-23 01:13:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:13:12,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 258 [2022-07-23 01:13:12,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:13:12,050 INFO L225 Difference]: With dead ends: 10904 [2022-07-23 01:13:12,050 INFO L226 Difference]: Without dead ends: 10891 [2022-07-23 01:13:12,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:13:12,058 INFO L413 NwaCegarLoop]: 2238 mSDtfsCounter, 2218 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 01:13:12,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2218 Valid, 2254 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 01:13:12,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10891 states. [2022-07-23 01:13:12,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10891 to 10878. [2022-07-23 01:13:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10878 states, 8092 states have (on average 1.3774097874443896) internal successors, (11146), 8239 states have internal predecessors, (11146), 2180 states have call successors, (2180), 600 states have call predecessors, (2180), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-23 01:13:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10878 states to 10878 states and 15657 transitions. [2022-07-23 01:13:12,467 INFO L78 Accepts]: Start accepts. Automaton has 10878 states and 15657 transitions. Word has length 258 [2022-07-23 01:13:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:13:12,469 INFO L495 AbstractCegarLoop]: Abstraction has 10878 states and 15657 transitions. [2022-07-23 01:13:12,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:13:12,469 INFO L276 IsEmpty]: Start isEmpty. Operand 10878 states and 15657 transitions. [2022-07-23 01:13:12,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-23 01:13:12,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:13:12,473 INFO L195 NwaCegarLoop]: trace histogram [31, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:13:12,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-23 01:13:12,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:13:12,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:13:12,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:13:12,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1077945855, now seen corresponding path program 1 times [2022-07-23 01:13:12,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:13:12,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079213638] [2022-07-23 01:13:12,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:13:12,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:13:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:13:12,696 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) [2022-07-23 01:13:12,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-23 01:13:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:13:17,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 3762 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 01:13:17,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:13:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 511 proven. 15 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2022-07-23 01:13:17,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:13:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 36 proven. 207 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2022-07-23 01:13:19,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:13:19,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079213638] [2022-07-23 01:13:19,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079213638] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:13:19,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:13:19,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-23 01:13:19,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035742803] [2022-07-23 01:13:19,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:13:19,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 01:13:19,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:13:19,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 01:13:19,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-07-23 01:13:19,982 INFO L87 Difference]: Start difference. First operand 10878 states and 15657 transitions. Second operand has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-23 01:13:22,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:13:22,890 INFO L93 Difference]: Finished difference Result 21815 states and 31971 transitions. [2022-07-23 01:13:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-23 01:13:22,892 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 258 [2022-07-23 01:13:22,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:13:22,953 INFO L225 Difference]: With dead ends: 21815 [2022-07-23 01:13:22,953 INFO L226 Difference]: Without dead ends: 10964 [2022-07-23 01:13:22,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-07-23 01:13:22,997 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 98 mSDsluCounter, 22035 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 24251 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-23 01:13:22,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 24251 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-23 01:13:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10964 states. [2022-07-23 01:13:23,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10964 to 10886. [2022-07-23 01:13:23,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10886 states, 8100 states have (on average 1.3780246913580247) internal successors, (11162), 8247 states have internal predecessors, (11162), 2180 states have call successors, (2180), 600 states have call predecessors, (2180), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-23 01:13:23,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10886 states to 10886 states and 15673 transitions. [2022-07-23 01:13:23,439 INFO L78 Accepts]: Start accepts. Automaton has 10886 states and 15673 transitions. Word has length 258 [2022-07-23 01:13:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:13:23,439 INFO L495 AbstractCegarLoop]: Abstraction has 10886 states and 15673 transitions. [2022-07-23 01:13:23,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-23 01:13:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 10886 states and 15673 transitions. [2022-07-23 01:13:23,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-23 01:13:23,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:13:23,444 INFO L195 NwaCegarLoop]: trace histogram [34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:13:23,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-23 01:13:23,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:13:23,663 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:13:23,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:13:23,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1841410329, now seen corresponding path program 2 times [2022-07-23 01:13:23,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:13:23,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733588582] [2022-07-23 01:13:23,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:13:23,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:13:23,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:13:23,669 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) [2022-07-23 01:13:23,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-23 01:13:26,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:13:26,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:13:26,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:13:26,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:13:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1380 trivial. 0 not checked. [2022-07-23 01:13:27,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:13:27,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:13:27,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733588582] [2022-07-23 01:13:27,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733588582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:13:27,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:13:27,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:13:27,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451001200] [2022-07-23 01:13:27,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:13:27,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:13:27,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:13:27,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:13:27,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:13:27,961 INFO L87 Difference]: Start difference. First operand 10886 states and 15673 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:13:28,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:13:28,107 INFO L93 Difference]: Finished difference Result 10888 states and 15674 transitions. [2022-07-23 01:13:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:13:28,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 261 [2022-07-23 01:13:28,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:13:28,169 INFO L225 Difference]: With dead ends: 10888 [2022-07-23 01:13:28,169 INFO L226 Difference]: Without dead ends: 10885 [2022-07-23 01:13:28,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:13:28,182 INFO L413 NwaCegarLoop]: 2220 mSDtfsCounter, 2135 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 2220 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 [2022-07-23 01:13:28,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2135 Valid, 2220 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 01:13:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10885 states. [2022-07-23 01:13:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10885 to 10885. [2022-07-23 01:13:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10885 states, 8100 states have (on average 1.3779012345679011) internal successors, (11161), 8246 states have internal predecessors, (11161), 2179 states have call successors, (2179), 600 states have call predecessors, (2179), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-23 01:13:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10885 states to 10885 states and 15671 transitions. [2022-07-23 01:13:28,675 INFO L78 Accepts]: Start accepts. Automaton has 10885 states and 15671 transitions. Word has length 261 [2022-07-23 01:13:28,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:13:28,675 INFO L495 AbstractCegarLoop]: Abstraction has 10885 states and 15671 transitions. [2022-07-23 01:13:28,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:13:28,675 INFO L276 IsEmpty]: Start isEmpty. Operand 10885 states and 15671 transitions. [2022-07-23 01:13:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-23 01:13:28,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:13:28,678 INFO L195 NwaCegarLoop]: trace histogram [34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:13:28,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-23 01:13:28,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:13:28,891 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:13:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:13:28,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1248693024, now seen corresponding path program 1 times [2022-07-23 01:13:28,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:13:28,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927533653] [2022-07-23 01:13:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:13:28,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:13:28,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:13:28,897 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) [2022-07-23 01:13:28,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-23 01:13:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:13:33,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 3796 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 01:13:33,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:13:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 567 proven. 21 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2022-07-23 01:13:33,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:13:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 41 proven. 254 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2022-07-23 01:13:36,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:13:36,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927533653] [2022-07-23 01:13:36,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927533653] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:13:36,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:13:36,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-23 01:13:36,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066318225] [2022-07-23 01:13:36,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:13:36,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-23 01:13:36,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:13:36,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-23 01:13:36,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-23 01:13:36,194 INFO L87 Difference]: Start difference. First operand 10885 states and 15671 transitions. Second operand has 21 states, 19 states have (on average 4.842105263157895) internal successors, (92), 21 states have internal predecessors, (92), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-23 01:13:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:13:39,680 INFO L93 Difference]: Finished difference Result 21845 states and 32015 transitions. [2022-07-23 01:13:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-23 01:13:39,681 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.842105263157895) internal successors, (92), 21 states have internal predecessors, (92), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 262 [2022-07-23 01:13:39,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:13:39,759 INFO L225 Difference]: With dead ends: 21845 [2022-07-23 01:13:39,760 INFO L226 Difference]: Without dead ends: 10987 [2022-07-23 01:13:39,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2022-07-23 01:13:39,887 INFO L413 NwaCegarLoop]: 2215 mSDtfsCounter, 79 mSDsluCounter, 33038 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 35253 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-23 01:13:39,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 35253 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-23 01:13:39,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2022-07-23 01:13:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 10893. [2022-07-23 01:13:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10893 states, 8108 states have (on average 1.3785150468672915) internal successors, (11177), 8254 states have internal predecessors, (11177), 2179 states have call successors, (2179), 600 states have call predecessors, (2179), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-23 01:13:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10893 states to 10893 states and 15687 transitions. [2022-07-23 01:13:40,385 INFO L78 Accepts]: Start accepts. Automaton has 10893 states and 15687 transitions. Word has length 262 [2022-07-23 01:13:40,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:13:40,386 INFO L495 AbstractCegarLoop]: Abstraction has 10893 states and 15687 transitions. [2022-07-23 01:13:40,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.842105263157895) internal successors, (92), 21 states have internal predecessors, (92), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-23 01:13:40,387 INFO L276 IsEmpty]: Start isEmpty. Operand 10893 states and 15687 transitions. [2022-07-23 01:13:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-23 01:13:40,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:13:40,389 INFO L195 NwaCegarLoop]: trace histogram [37, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:13:40,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-23 01:13:40,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:13:40,603 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:13:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:13:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -436266952, now seen corresponding path program 2 times [2022-07-23 01:13:40,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:13:40,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888574152] [2022-07-23 01:13:40,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:13:40,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:13:40,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:13:40,609 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) [2022-07-23 01:13:40,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-23 01:13:43,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:13:43,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:13:43,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:13:43,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:13:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-07-23 01:13:45,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:13:45,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:13:45,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888574152] [2022-07-23 01:13:45,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888574152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:13:45,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:13:45,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:13:45,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214139216] [2022-07-23 01:13:45,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:13:45,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:13:45,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:13:45,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:13:45,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:13:45,544 INFO L87 Difference]: Start difference. First operand 10893 states and 15687 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:13:46,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:13:46,189 INFO L93 Difference]: Finished difference Result 32304 states and 46568 transitions. [2022-07-23 01:13:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:13:46,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 265 [2022-07-23 01:13:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:13:46,372 INFO L225 Difference]: With dead ends: 32304 [2022-07-23 01:13:46,372 INFO L226 Difference]: Without dead ends: 21468 [2022-07-23 01:13:46,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:13:46,413 INFO L413 NwaCegarLoop]: 3054 mSDtfsCounter, 2110 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 5191 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 01:13:46,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 5191 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 01:13:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21468 states. [2022-07-23 01:13:47,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21468 to 21436. [2022-07-23 01:13:47,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21436 states, 15990 states have (on average 1.380175109443402) internal successors, (22069), 16277 states have internal predecessors, (22069), 4266 states have call successors, (4266), 1173 states have call predecessors, (4266), 1179 states have return successors, (4569), 4193 states have call predecessors, (4569), 4256 states have call successors, (4569) [2022-07-23 01:13:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21436 states to 21436 states and 30904 transitions. [2022-07-23 01:13:47,365 INFO L78 Accepts]: Start accepts. Automaton has 21436 states and 30904 transitions. Word has length 265 [2022-07-23 01:13:47,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:13:47,366 INFO L495 AbstractCegarLoop]: Abstraction has 21436 states and 30904 transitions. [2022-07-23 01:13:47,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:13:47,366 INFO L276 IsEmpty]: Start isEmpty. Operand 21436 states and 30904 transitions. [2022-07-23 01:13:47,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-23 01:13:47,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:13:47,370 INFO L195 NwaCegarLoop]: trace histogram [37, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:13:47,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-23 01:13:47,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:13:47,591 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:13:47,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:13:47,592 INFO L85 PathProgramCache]: Analyzing trace with hash -639821084, now seen corresponding path program 1 times [2022-07-23 01:13:47,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:13:47,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771837925] [2022-07-23 01:13:47,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:13:47,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:13:47,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:13:47,598 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:13:47,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-23 01:13:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:13:52,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 3830 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 01:13:52,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:13:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 627 proven. 28 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-07-23 01:13:53,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:13:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 46 proven. 306 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2022-07-23 01:13:56,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:13:56,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771837925] [2022-07-23 01:13:56,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771837925] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:13:56,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:13:56,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-07-23 01:13:56,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485225804] [2022-07-23 01:13:56,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:13:56,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-23 01:13:56,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:13:56,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-23 01:13:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-07-23 01:13:56,111 INFO L87 Difference]: Start difference. First operand 21436 states and 30904 transitions. Second operand has 23 states, 21 states have (on average 4.523809523809524) internal successors, (95), 23 states have internal predecessors, (95), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-23 01:14:00,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:14:00,199 INFO L93 Difference]: Finished difference Result 43083 states and 63205 transitions. [2022-07-23 01:14:00,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-23 01:14:00,200 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.523809523809524) internal successors, (95), 23 states have internal predecessors, (95), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 266 [2022-07-23 01:14:00,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:14:00,318 INFO L225 Difference]: With dead ends: 43083 [2022-07-23 01:14:00,318 INFO L226 Difference]: Without dead ends: 21674 [2022-07-23 01:14:00,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-07-23 01:14:00,412 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 121 mSDsluCounter, 26437 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 28653 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-23 01:14:00,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 28653 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-23 01:14:00,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21674 states. [2022-07-23 01:14:01,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21674 to 21452. [2022-07-23 01:14:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21452 states, 16006 states have (on average 1.380794701986755) internal successors, (22101), 16293 states have internal predecessors, (22101), 4266 states have call successors, (4266), 1173 states have call predecessors, (4266), 1179 states have return successors, (4569), 4193 states have call predecessors, (4569), 4256 states have call successors, (4569) [2022-07-23 01:14:01,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21452 states to 21452 states and 30936 transitions. [2022-07-23 01:14:01,486 INFO L78 Accepts]: Start accepts. Automaton has 21452 states and 30936 transitions. Word has length 266 [2022-07-23 01:14:01,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:14:01,487 INFO L495 AbstractCegarLoop]: Abstraction has 21452 states and 30936 transitions. [2022-07-23 01:14:01,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.523809523809524) internal successors, (95), 23 states have internal predecessors, (95), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-23 01:14:01,488 INFO L276 IsEmpty]: Start isEmpty. Operand 21452 states and 30936 transitions. [2022-07-23 01:14:01,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-23 01:14:01,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:14:01,490 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:14:01,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-23 01:14:01,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:14:01,703 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:14:01,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:14:01,704 INFO L85 PathProgramCache]: Analyzing trace with hash 607363324, now seen corresponding path program 2 times [2022-07-23 01:14:01,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:14:01,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601538978] [2022-07-23 01:14:01,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:14:01,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:14:01,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:14:01,710 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:14:01,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-23 01:14:04,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:14:04,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:14:04,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:14:04,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:14:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2022-07-23 01:14:06,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:14:06,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:14:06,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601538978] [2022-07-23 01:14:06,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601538978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:14:06,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:14:06,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:14:06,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874610339] [2022-07-23 01:14:06,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:14:06,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:14:06,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:14:06,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:14:06,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:14:06,283 INFO L87 Difference]: Start difference. First operand 21452 states and 30936 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:14:06,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:14:06,647 INFO L93 Difference]: Finished difference Result 21454 states and 30937 transitions. [2022-07-23 01:14:06,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:14:06,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 269 [2022-07-23 01:14:06,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:14:06,735 INFO L225 Difference]: With dead ends: 21454 [2022-07-23 01:14:06,735 INFO L226 Difference]: Without dead ends: 21451 [2022-07-23 01:14:06,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:14:06,753 INFO L413 NwaCegarLoop]: 2218 mSDtfsCounter, 2131 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2131 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 01:14:06,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2131 Valid, 2218 Invalid, 1 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 01:14:06,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21451 states. [2022-07-23 01:14:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21451 to 21451. [2022-07-23 01:14:07,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21451 states, 16006 states have (on average 1.3807322254154692) internal successors, (22100), 16292 states have internal predecessors, (22100), 4265 states have call successors, (4265), 1173 states have call predecessors, (4265), 1179 states have return successors, (4569), 4193 states have call predecessors, (4569), 4256 states have call successors, (4569) [2022-07-23 01:14:07,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21451 states to 21451 states and 30934 transitions. [2022-07-23 01:14:07,910 INFO L78 Accepts]: Start accepts. Automaton has 21451 states and 30934 transitions. Word has length 269 [2022-07-23 01:14:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:14:07,910 INFO L495 AbstractCegarLoop]: Abstraction has 21451 states and 30934 transitions. [2022-07-23 01:14:07,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:14:07,911 INFO L276 IsEmpty]: Start isEmpty. Operand 21451 states and 30934 transitions. [2022-07-23 01:14:07,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-07-23 01:14:07,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:14:07,913 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:14:07,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-23 01:14:08,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:14:08,135 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:14:08,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:14:08,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1647951267, now seen corresponding path program 1 times [2022-07-23 01:14:08,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:14:08,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021533608] [2022-07-23 01:14:08,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:14:08,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:14:08,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:14:08,142 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:14:08,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-23 01:14:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:14:18,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 3864 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:14:18,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:14:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2022-07-23 01:14:20,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:14:20,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:14:20,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021533608] [2022-07-23 01:14:20,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021533608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:14:20,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:14:20,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:14:20,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906902650] [2022-07-23 01:14:20,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:14:20,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:14:20,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:14:20,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:14:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:14:20,375 INFO L87 Difference]: Start difference. First operand 21451 states and 30934 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:14:20,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:14:20,740 INFO L93 Difference]: Finished difference Result 21453 states and 30935 transitions. [2022-07-23 01:14:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:14:20,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 270 [2022-07-23 01:14:20,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:14:20,853 INFO L225 Difference]: With dead ends: 21453 [2022-07-23 01:14:20,853 INFO L226 Difference]: Without dead ends: 21450 [2022-07-23 01:14:20,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:14:20,872 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 2128 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 2216 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 [2022-07-23 01:14:20,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2128 Valid, 2216 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 01:14:20,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21450 states. [2022-07-23 01:14:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21450 to 21450. [2022-07-23 01:14:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21450 states, 16006 states have (on average 1.3806697488441835) internal successors, (22099), 16291 states have internal predecessors, (22099), 4264 states have call successors, (4264), 1173 states have call predecessors, (4264), 1179 states have return successors, (4569), 4193 states have call predecessors, (4569), 4256 states have call successors, (4569) [2022-07-23 01:14:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21450 states to 21450 states and 30932 transitions. [2022-07-23 01:14:21,736 INFO L78 Accepts]: Start accepts. Automaton has 21450 states and 30932 transitions. Word has length 270 [2022-07-23 01:14:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:14:21,737 INFO L495 AbstractCegarLoop]: Abstraction has 21450 states and 30932 transitions. [2022-07-23 01:14:21,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:14:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 21450 states and 30932 transitions. [2022-07-23 01:14:21,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-23 01:14:21,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:14:21,741 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:14:21,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-23 01:14:21,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:14:21,956 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:14:21,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:14:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash -453556001, now seen corresponding path program 1 times [2022-07-23 01:14:21,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:14:21,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749688091] [2022-07-23 01:14:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:14:21,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:14:21,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:14:21,961 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:14:21,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-23 01:14:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:14:31,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 3865 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:14:31,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:14:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2022-07-23 01:14:33,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:14:33,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:14:33,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749688091] [2022-07-23 01:14:33,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749688091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:14:33,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:14:33,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:14:33,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428631456] [2022-07-23 01:14:33,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:14:33,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:14:33,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:14:33,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:14:33,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:14:33,607 INFO L87 Difference]: Start difference. First operand 21450 states and 30932 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:14:34,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:14:34,127 INFO L93 Difference]: Finished difference Result 28013 states and 39932 transitions. [2022-07-23 01:14:34,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:14:34,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 271 [2022-07-23 01:14:34,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:14:34,219 INFO L225 Difference]: With dead ends: 28013 [2022-07-23 01:14:34,219 INFO L226 Difference]: Without dead ends: 27974 [2022-07-23 01:14:34,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:14:34,237 INFO L413 NwaCegarLoop]: 2316 mSDtfsCounter, 1883 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 01:14:34,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1883 Valid, 3352 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 01:14:34,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27974 states. [2022-07-23 01:14:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27974 to 26021. [2022-07-23 01:14:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26021 states, 19427 states have (on average 1.375353888917486) internal successors, (26719), 19753 states have internal predecessors, (26719), 5025 states have call successors, (5025), 1562 states have call predecessors, (5025), 1568 states have return successors, (5338), 4946 states have call predecessors, (5338), 5019 states have call successors, (5338) [2022-07-23 01:14:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26021 states to 26021 states and 37082 transitions. [2022-07-23 01:14:35,287 INFO L78 Accepts]: Start accepts. Automaton has 26021 states and 37082 transitions. Word has length 271 [2022-07-23 01:14:35,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:14:35,288 INFO L495 AbstractCegarLoop]: Abstraction has 26021 states and 37082 transitions. [2022-07-23 01:14:35,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:14:35,288 INFO L276 IsEmpty]: Start isEmpty. Operand 26021 states and 37082 transitions. [2022-07-23 01:14:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-07-23 01:14:35,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:14:35,308 INFO L195 NwaCegarLoop]: trace histogram [40, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:14:35,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-23 01:14:35,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:14:35,528 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:14:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:14:35,528 INFO L85 PathProgramCache]: Analyzing trace with hash -161822822, now seen corresponding path program 1 times [2022-07-23 01:14:35,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:14:35,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618627199] [2022-07-23 01:14:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:14:35,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:14:35,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:14:35,532 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:14:35,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-23 01:14:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:14:45,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 4303 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:14:45,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:14:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2022-07-23 01:14:45,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:14:45,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:14:45,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618627199] [2022-07-23 01:14:45,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618627199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:14:45,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:14:45,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:14:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607529789] [2022-07-23 01:14:45,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:14:45,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:14:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:14:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:14:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:14:45,230 INFO L87 Difference]: Start difference. First operand 26021 states and 37082 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-23 01:14:46,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:14:46,727 INFO L93 Difference]: Finished difference Result 70615 states and 100377 transitions. [2022-07-23 01:14:46,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:14:46,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 383 [2022-07-23 01:14:46,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:14:46,924 INFO L225 Difference]: With dead ends: 70615 [2022-07-23 01:14:46,924 INFO L226 Difference]: Without dead ends: 44619 [2022-07-23 01:14:47,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:14:47,020 INFO L413 NwaCegarLoop]: 3298 mSDtfsCounter, 1629 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 5404 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 01:14:47,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 5404 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 01:14:47,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44619 states. [2022-07-23 01:14:48,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44619 to 42635. [2022-07-23 01:14:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42635 states, 31867 states have (on average 1.3690651771424984) internal successors, (43628), 32307 states have internal predecessors, (43628), 8143 states have call successors, (8143), 2626 states have call predecessors, (8143), 2624 states have return successors, (8693), 8036 states have call predecessors, (8693), 8137 states have call successors, (8693) [2022-07-23 01:14:48,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42635 states to 42635 states and 60464 transitions. [2022-07-23 01:14:48,535 INFO L78 Accepts]: Start accepts. Automaton has 42635 states and 60464 transitions. Word has length 383 [2022-07-23 01:14:48,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:14:48,536 INFO L495 AbstractCegarLoop]: Abstraction has 42635 states and 60464 transitions. [2022-07-23 01:14:48,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-23 01:14:48,536 INFO L276 IsEmpty]: Start isEmpty. Operand 42635 states and 60464 transitions. [2022-07-23 01:14:48,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-07-23 01:14:48,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:14:48,572 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:14:48,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-23 01:14:48,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:14:48,788 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:14:48,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:14:48,789 INFO L85 PathProgramCache]: Analyzing trace with hash -321975785, now seen corresponding path program 1 times [2022-07-23 01:14:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:14:48,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88746367] [2022-07-23 01:14:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:14:48,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:14:48,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:14:48,795 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:14:48,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-23 01:14:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:15:00,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 4401 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 01:15:00,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:15:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1661 trivial. 0 not checked. [2022-07-23 01:15:00,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:15:00,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:15:00,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88746367] [2022-07-23 01:15:00,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88746367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:15:00,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:15:00,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 01:15:00,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312528664] [2022-07-23 01:15:00,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:15:00,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 01:15:00,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:15:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 01:15:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 01:15:00,196 INFO L87 Difference]: Start difference. First operand 42635 states and 60464 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-23 01:15:01,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:15:01,880 INFO L93 Difference]: Finished difference Result 93727 states and 134609 transitions. [2022-07-23 01:15:01,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 01:15:01,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) Word has length 414 [2022-07-23 01:15:01,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:15:02,215 INFO L225 Difference]: With dead ends: 93727 [2022-07-23 01:15:02,215 INFO L226 Difference]: Without dead ends: 51149 [2022-07-23 01:15:02,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 01:15:02,334 INFO L413 NwaCegarLoop]: 2841 mSDtfsCounter, 592 mSDsluCounter, 10802 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 13643 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 01:15:02,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 13643 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 01:15:02,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51149 states.