./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.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 549c0f0e85f506f59a54b746c0743ded562d36f784f1b0fcb4bf7d5e1672332d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:30:52,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:30:52,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:30:52,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:30:52,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:30:52,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:30:52,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:30:52,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:30:52,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:30:52,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:30:52,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:30:52,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:30:52,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:30:52,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:30:52,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:30:52,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:30:52,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:30:52,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:30:52,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:30:52,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:30:52,350 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:30:52,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:30:52,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:30:52,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:30:52,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:30:52,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:30:52,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:30:52,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:30:52,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:30:52,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:30:52,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:30:52,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:30:52,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:30:52,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:30:52,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:30:52,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:30:52,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:30:52,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:30:52,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:30:52,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:30:52,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:30:52,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:30:52,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:30:52,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:30:52,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:30:52,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:30:52,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:30:52,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:30:52,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:30:52,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:30:52,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:30:52,399 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:30:52,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:30:52,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:30:52,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:30:52,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:30:52,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:30:52,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:30:52,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:30:52,401 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:30:52,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:30:52,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:30:52,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:30:52,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:30:52,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:30:52,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:30:52,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:30:52,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:30:52,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:30:52,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:30:52,403 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:30:52,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:30:52,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:30:52,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 549c0f0e85f506f59a54b746c0743ded562d36f784f1b0fcb4bf7d5e1672332d [2022-07-12 12:30:52,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:30:52,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:30:52,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:30:52,638 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:30:52,640 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:30:52,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-07-12 12:30:52,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4baa9809e/5686d04623bd4967b6370c049b56e16b/FLAG191b0a029 [2022-07-12 12:30:53,293 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:30:53,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-07-12 12:30:53,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4baa9809e/5686d04623bd4967b6370c049b56e16b/FLAG191b0a029 [2022-07-12 12:30:53,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4baa9809e/5686d04623bd4967b6370c049b56e16b [2022-07-12 12:30:53,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:30:53,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:30:53,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:30:53,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:30:53,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:30:53,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:30:53" (1/1) ... [2022-07-12 12:30:53,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108c359e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:53, skipping insertion in model container [2022-07-12 12:30:53,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:30:53" (1/1) ... [2022-07-12 12:30:53,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:30:53,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:30:54,473 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-07-12 12:30:54,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:30:54,985 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:30:55,077 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-07-12 12:30:55,128 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: cr = (unsigned int )cr & 243U [6660] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckBinaryExpression(TypeCheckHelper.java:207) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.constructBinaryExpression(ExpressionFactory.java:597) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.newBinaryExpression(ExpressionFactory.java:132) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:483) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-12 12:30:55,137 INFO L158 Benchmark]: Toolchain (without parser) took 1403.54ms. Allocated memory was 113.2MB in the beginning and 155.2MB in the end (delta: 41.9MB). Free memory was 70.8MB in the beginning and 82.0MB in the end (delta: -11.2MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. [2022-07-12 12:30:55,137 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 12:30:55,138 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1400.71ms. Allocated memory was 113.2MB in the beginning and 155.2MB in the end (delta: 41.9MB). Free memory was 70.6MB in the beginning and 82.0MB in the end (delta: -11.5MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. [2022-07-12 12:30:55,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1400.71ms. Allocated memory was 113.2MB in the beginning and 155.2MB in the end (delta: 41.9MB). Free memory was 70.6MB in the beginning and 82.0MB in the end (delta: -11.5MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: cr = (unsigned int )cr & 243U [6660] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: cr = (unsigned int )cr & 243U [6660]: 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.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 549c0f0e85f506f59a54b746c0743ded562d36f784f1b0fcb4bf7d5e1672332d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:30:56,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:30:56,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:30:56,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:30:56,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:30:56,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:30:56,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:30:56,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:30:56,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:30:56,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:30:56,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:30:56,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:30:56,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:30:56,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:30:56,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:30:56,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:30:56,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:30:56,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:30:56,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:30:56,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:30:56,667 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:30:56,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:30:56,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:30:56,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:30:56,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:30:56,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:30:56,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:30:56,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:30:56,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:30:56,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:30:56,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:30:56,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:30:56,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:30:56,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:30:56,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:30:56,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:30:56,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:30:56,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:30:56,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:30:56,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:30:56,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:30:56,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:30:56,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-12 12:30:56,715 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:30:56,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:30:56,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:30:56,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:30:56,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:30:56,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:30:56,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:30:56,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:30:56,717 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:30:56,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:30:56,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:30:56,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:30:56,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:30:56,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:30:56,719 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 12:30:56,719 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 12:30:56,719 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 12:30:56,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:30:56,720 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:30:56,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:30:56,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:30:56,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:30:56,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:30:56,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:30:56,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:30:56,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:30:56,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:30:56,721 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 12:30:56,721 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 12:30:56,721 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:30:56,722 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:30:56,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:30:56,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 12:30:56,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 549c0f0e85f506f59a54b746c0743ded562d36f784f1b0fcb4bf7d5e1672332d [2022-07-12 12:30:56,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:30:56,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:30:56,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:30:56,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:30:56,999 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:30:57,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-07-12 12:30:57,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2d4777a/4ca7719d1c944bdfb008d68244675033/FLAG2624f704f [2022-07-12 12:30:57,683 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:30:57,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-07-12 12:30:57,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2d4777a/4ca7719d1c944bdfb008d68244675033/FLAG2624f704f [2022-07-12 12:30:58,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2d4777a/4ca7719d1c944bdfb008d68244675033 [2022-07-12 12:30:58,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:30:58,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:30:58,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:30:58,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:30:58,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:30:58,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:30:58" (1/1) ... [2022-07-12 12:30:58,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e7ac5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:58, skipping insertion in model container [2022-07-12 12:30:58,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:30:58" (1/1) ... [2022-07-12 12:30:58,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:30:58,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:30:58,777 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-07-12 12:30:59,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:30:59,216 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-12 12:30:59,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:30:59,340 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-07-12 12:30:59,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:30:59,474 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:30:59,596 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-07-12 12:30:59,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:30:59,808 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:30:59,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:59 WrapperNode [2022-07-12 12:30:59,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:30:59,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:30:59,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:30:59,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:30:59,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:59" (1/1) ... [2022-07-12 12:30:59,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:59" (1/1) ... [2022-07-12 12:30:59,951 INFO L137 Inliner]: procedures = 212, calls = 1031, calls flagged for inlining = 87, calls inlined = 80, statements flattened = 2343 [2022-07-12 12:30:59,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:30:59,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:30:59,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:30:59,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:30:59,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:59" (1/1) ... [2022-07-12 12:30:59,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:59" (1/1) ... [2022-07-12 12:30:59,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:59" (1/1) ... [2022-07-12 12:30:59,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:59" (1/1) ... [2022-07-12 12:31:00,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:59" (1/1) ... [2022-07-12 12:31:00,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:59" (1/1) ... [2022-07-12 12:31:00,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:59" (1/1) ... [2022-07-12 12:31:00,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:31:00,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:31:00,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:31:00,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:31:00,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:59" (1/1) ... [2022-07-12 12:31:00,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:31:00,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:31:00,136 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) [2022-07-12 12:31:00,155 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 [2022-07-12 12:31:00,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-12 12:31:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-12 12:31:00,165 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-12 12:31:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-12 12:31:00,165 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-12 12:31:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-12 12:31:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 12:31:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:31:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-12 12:31:00,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:31:00,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 12:31:00,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 12:31:00,166 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-07-12 12:31:00,166 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-07-12 12:31:00,166 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-12 12:31:00,166 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-12 12:31:00,166 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-07-12 12:31:00,167 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-07-12 12:31:00,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:31:00,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:31:00,167 INFO L130 BoogieDeclarations]: Found specification of procedure pull_skb [2022-07-12 12:31:00,167 INFO L138 BoogieDeclarations]: Found implementation of procedure pull_skb [2022-07-12 12:31:00,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-12 12:31:00,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-12 12:31:00,167 INFO L130 BoogieDeclarations]: Found specification of procedure free_skb_pool [2022-07-12 12:31:00,168 INFO L138 BoogieDeclarations]: Found implementation of procedure free_skb_pool [2022-07-12 12:31:00,168 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-12 12:31:00,168 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-12 12:31:00,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:31:00,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:31:00,169 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-07-12 12:31:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-07-12 12:31:00,169 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-07-12 12:31:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-07-12 12:31:00,169 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-07-12 12:31:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-07-12 12:31:00,169 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-12 12:31:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-12 12:31:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 12:31:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 12:31:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-12 12:31:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-12 12:31:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-12 12:31:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-12 12:31:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:31:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure fill_skb_pool [2022-07-12 12:31:00,171 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_skb_pool [2022-07-12 12:31:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-12 12:31:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-12 12:31:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:31:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-12 12:31:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-12 12:31:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-12 12:31:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-12 12:31:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-12 12:31:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-12 12:31:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_set_mac_address [2022-07-12 12:31:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_set_mac_address [2022-07-12 12:31:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-12 12:31:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-12 12:31:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-12 12:31:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:31:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 12:31:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:31:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-12 12:31:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 12:31:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-12 12:31:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-12 12:31:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_set_multicast [2022-07-12 12:31:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_set_multicast [2022-07-12 12:31:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-07-12 12:31:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-07-12 12:31:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-12 12:31:00,177 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-12 12:31:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-07-12 12:31:00,177 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-07-12 12:31:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-12 12:31:00,177 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-12 12:31:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-12 12:31:00,177 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-12 12:31:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-12 12:31:00,178 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-12 12:31:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2022-07-12 12:31:00,178 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2022-07-12 12:31:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure __printk_ratelimit [2022-07-12 12:31:00,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __printk_ratelimit [2022-07-12 12:31:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-12 12:31:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-12 12:31:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-12 12:31:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-12 12:31:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_tx_timeout [2022-07-12 12:31:00,180 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_tx_timeout [2022-07-12 12:31:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-12 12:31:00,180 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-12 12:31:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_ioctl [2022-07-12 12:31:00,181 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_ioctl [2022-07-12 12:31:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 12:31:00,181 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 12:31:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-12 12:31:00,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-12 12:31:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-12 12:31:00,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-12 12:31:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-12 12:31:00,182 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-12 12:31:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-12 12:31:00,182 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-12 12:31:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 12:31:00,182 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 12:31:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_reset [2022-07-12 12:31:00,183 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_reset [2022-07-12 12:31:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-12 12:31:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-12 12:31:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-12 12:31:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-12 12:31:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:31:00,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:31:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_disconnect [2022-07-12 12:31:00,187 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_disconnect [2022-07-12 12:31:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:31:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-07-12 12:31:00,187 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-07-12 12:31:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:31:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:31:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-12 12:31:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-12 12:31:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-12 12:31:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-07-12 12:31:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-07-12 12:31:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-07-12 12:31:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-07-12 12:31:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-12 12:31:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-12 12:31:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2022-07-12 12:31:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2022-07-12 12:31:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-12 12:31:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-12 12:31:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-12 12:31:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2022-07-12 12:31:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2022-07-12 12:31:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:31:00,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:31:00,633 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:31:00,635 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:31:00,812 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 12:31:16,606 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:31:16,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:31:16,627 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-12 12:31:16,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:31:16 BoogieIcfgContainer [2022-07-12 12:31:16,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:31:16,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:31:16,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:31:16,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:31:16,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:30:58" (1/3) ... [2022-07-12 12:31:16,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9baf6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:31:16, skipping insertion in model container [2022-07-12 12:31:16,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:30:59" (2/3) ... [2022-07-12 12:31:16,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9baf6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:31:16, skipping insertion in model container [2022-07-12 12:31:16,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:31:16" (3/3) ... [2022-07-12 12:31:16,636 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-07-12 12:31:16,645 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:31:16,646 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:31:16,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:31:16,724 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@10654df, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b5f9646 [2022-07-12 12:31:16,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:31:16,730 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 605 states have (on average 1.3305785123966942) internal successors, (805), 621 states have internal predecessors, (805), 188 states have call successors, (188), 55 states have call predecessors, (188), 54 states have return successors, (183), 181 states have call predecessors, (183), 183 states have call successors, (183) [2022-07-12 12:31:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 12:31:16,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:16,740 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:31:16,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:16,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:16,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1627128050, now seen corresponding path program 1 times [2022-07-12 12:31:16,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:31:16,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987529443] [2022-07-12 12:31:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:16,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:31:16,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:31:16,761 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) [2022-07-12 12:31:16,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 12:31:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:17,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:31:17,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:31:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 12:31:17,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:31:17,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:31:17,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987529443] [2022-07-12 12:31:17,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987529443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:31:17,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:31:17,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:31:17,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268125983] [2022-07-12 12:31:17,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:31:17,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:31:17,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:31:17,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:31:17,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:31:17,565 INFO L87 Difference]: Start difference. First operand has 849 states, 605 states have (on average 1.3305785123966942) internal successors, (805), 621 states have internal predecessors, (805), 188 states have call successors, (188), 55 states have call predecessors, (188), 54 states have return successors, (183), 181 states have call predecessors, (183), 183 states have call successors, (183) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 12:31:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:17,715 INFO L93 Difference]: Finished difference Result 1694 states and 2383 transitions. [2022-07-12 12:31:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:31:17,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-07-12 12:31:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:17,737 INFO L225 Difference]: With dead ends: 1694 [2022-07-12 12:31:17,737 INFO L226 Difference]: Without dead ends: 838 [2022-07-12 12:31:17,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:31:17,749 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 0 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:17,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2328 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:31:17,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-07-12 12:31:17,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2022-07-12 12:31:17,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 601 states have (on average 1.3094841930116472) internal successors, (787), 610 states have internal predecessors, (787), 183 states have call successors, (183), 54 states have call predecessors, (183), 53 states have return successors, (182), 180 states have call predecessors, (182), 182 states have call successors, (182) [2022-07-12 12:31:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1152 transitions. [2022-07-12 12:31:17,827 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1152 transitions. Word has length 56 [2022-07-12 12:31:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:17,828 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1152 transitions. [2022-07-12 12:31:17,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 12:31:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1152 transitions. [2022-07-12 12:31:17,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-12 12:31:17,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:17,831 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:31:17,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 12:31:18,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:31:18,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:18,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:18,048 INFO L85 PathProgramCache]: Analyzing trace with hash -847093427, now seen corresponding path program 1 times [2022-07-12 12:31:18,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:31:18,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130676117] [2022-07-12 12:31:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:18,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:31:18,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:31:18,051 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) [2022-07-12 12:31:18,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 12:31:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:18,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:31:18,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:31:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 12:31:18,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:31:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 12:31:18,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:31:18,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130676117] [2022-07-12 12:31:18,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130676117] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:31:18,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 12:31:18,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-12 12:31:18,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166623751] [2022-07-12 12:31:18,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 12:31:18,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:31:18,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:31:18,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:31:18,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:31:18,912 INFO L87 Difference]: Start difference. First operand 838 states and 1152 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 12:31:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:19,171 INFO L93 Difference]: Finished difference Result 1661 states and 2285 transitions. [2022-07-12 12:31:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 12:31:19,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-07-12 12:31:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:19,179 INFO L225 Difference]: With dead ends: 1661 [2022-07-12 12:31:19,179 INFO L226 Difference]: Without dead ends: 841 [2022-07-12 12:31:19,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:31:19,181 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 0 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3446 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:19,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3446 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 12:31:19,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-07-12 12:31:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 841. [2022-07-12 12:31:19,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 604 states have (on average 1.3079470198675496) internal successors, (790), 613 states have internal predecessors, (790), 183 states have call successors, (183), 54 states have call predecessors, (183), 53 states have return successors, (182), 180 states have call predecessors, (182), 182 states have call successors, (182) [2022-07-12 12:31:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1155 transitions. [2022-07-12 12:31:19,228 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1155 transitions. Word has length 57 [2022-07-12 12:31:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:19,229 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1155 transitions. [2022-07-12 12:31:19,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 12:31:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1155 transitions. [2022-07-12 12:31:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-12 12:31:19,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:19,231 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:31:19,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 12:31:19,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:31:19,442 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:19,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2143207346, now seen corresponding path program 2 times [2022-07-12 12:31:19,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:31:19,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143541512] [2022-07-12 12:31:19,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:31:19,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:31:19,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:31:19,445 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) [2022-07-12 12:31:19,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 12:31:19,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 12:31:19,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:31:19,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:31:19,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:31:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 12:31:19,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:31:19,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:31:19,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143541512] [2022-07-12 12:31:19,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143541512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:31:19,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:31:19,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:31:19,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478792856] [2022-07-12 12:31:19,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:31:19,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:31:19,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:31:19,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:31:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:31:19,972 INFO L87 Difference]: Start difference. First operand 841 states and 1155 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 12:31:20,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:20,135 INFO L93 Difference]: Finished difference Result 2460 states and 3386 transitions. [2022-07-12 12:31:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:31:20,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2022-07-12 12:31:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:20,143 INFO L225 Difference]: With dead ends: 2460 [2022-07-12 12:31:20,144 INFO L226 Difference]: Without dead ends: 1641 [2022-07-12 12:31:20,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:31:20,148 INFO L413 NwaCegarLoop]: 1332 mSDtfsCounter, 1104 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:20,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 2464 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 12:31:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2022-07-12 12:31:20,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1641. [2022-07-12 12:31:20,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1177 states have (on average 1.3118096856414614) internal successors, (1544), 1195 states have internal predecessors, (1544), 357 states have call successors, (357), 107 states have call predecessors, (357), 106 states have return successors, (356), 352 states have call predecessors, (356), 356 states have call successors, (356) [2022-07-12 12:31:20,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2257 transitions. [2022-07-12 12:31:20,197 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2257 transitions. Word has length 60 [2022-07-12 12:31:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:20,197 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2257 transitions. [2022-07-12 12:31:20,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 12:31:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2257 transitions. [2022-07-12 12:31:20,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 12:31:20,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:20,200 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:31:20,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 12:31:20,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:31:20,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1025478499, now seen corresponding path program 1 times [2022-07-12 12:31:20,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:31:20,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317559498] [2022-07-12 12:31:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:20,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:31:20,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:31:20,432 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) [2022-07-12 12:31:20,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 12:31:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:21,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:31:21,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:31:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 12:31:21,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:31:21,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:31:21,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317559498] [2022-07-12 12:31:21,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317559498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:31:21,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:31:21,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:31:21,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21520453] [2022-07-12 12:31:21,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:31:21,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:31:21,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:31:21,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:31:21,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:31:21,224 INFO L87 Difference]: Start difference. First operand 1641 states and 2257 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 12:31:21,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:21,559 INFO L93 Difference]: Finished difference Result 4876 states and 6735 transitions. [2022-07-12 12:31:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:31:21,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-12 12:31:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:21,572 INFO L225 Difference]: With dead ends: 4876 [2022-07-12 12:31:21,573 INFO L226 Difference]: Without dead ends: 3251 [2022-07-12 12:31:21,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:31:21,579 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1120 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:21,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 5148 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 12:31:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2022-07-12 12:31:21,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 3243. [2022-07-12 12:31:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 2323 states have (on average 1.3125269048643995) internal successors, (3049), 2359 states have internal predecessors, (3049), 707 states have call successors, (707), 213 states have call predecessors, (707), 212 states have return successors, (726), 698 states have call predecessors, (726), 706 states have call successors, (726) [2022-07-12 12:31:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4482 transitions. [2022-07-12 12:31:21,680 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4482 transitions. Word has length 70 [2022-07-12 12:31:21,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:21,680 INFO L495 AbstractCegarLoop]: Abstraction has 3243 states and 4482 transitions. [2022-07-12 12:31:21,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 12:31:21,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4482 transitions. [2022-07-12 12:31:21,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 12:31:21,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:21,691 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 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] [2022-07-12 12:31:21,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 12:31:21,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:31:21,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:21,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:21,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1319378965, now seen corresponding path program 1 times [2022-07-12 12:31:21,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:31:21,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658369694] [2022-07-12 12:31:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:21,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:31:21,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:31:21,917 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) [2022-07-12 12:31:21,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 12:31:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:31:22,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:31:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-12 12:31:22,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:31:22,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:31:22,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658369694] [2022-07-12 12:31:22,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658369694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:31:22,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:31:22,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:31:22,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628781768] [2022-07-12 12:31:22,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:31:22,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:31:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:31:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:31:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:31:22,949 INFO L87 Difference]: Start difference. First operand 3243 states and 4482 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 12:31:23,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:23,235 INFO L93 Difference]: Finished difference Result 8380 states and 11536 transitions. [2022-07-12 12:31:23,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:31:23,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 157 [2022-07-12 12:31:23,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:23,262 INFO L225 Difference]: With dead ends: 8380 [2022-07-12 12:31:23,262 INFO L226 Difference]: Without dead ends: 5159 [2022-07-12 12:31:23,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:31:23,274 INFO L413 NwaCegarLoop]: 1361 mSDtfsCounter, 683 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:23,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 2463 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 12:31:23,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2022-07-12 12:31:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 5148. [2022-07-12 12:31:23,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5148 states, 3666 states have (on average 1.3120567375886525) internal successors, (4810), 3718 states have internal predecessors, (4810), 1120 states have call successors, (1120), 362 states have call predecessors, (1120), 361 states have return successors, (1139), 1107 states have call predecessors, (1139), 1119 states have call successors, (1139) [2022-07-12 12:31:23,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5148 states to 5148 states and 7069 transitions. [2022-07-12 12:31:23,420 INFO L78 Accepts]: Start accepts. Automaton has 5148 states and 7069 transitions. Word has length 157 [2022-07-12 12:31:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:23,420 INFO L495 AbstractCegarLoop]: Abstraction has 5148 states and 7069 transitions. [2022-07-12 12:31:23,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 12:31:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5148 states and 7069 transitions. [2022-07-12 12:31:23,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-12 12:31:23,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:23,433 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 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] [2022-07-12 12:31:23,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-12 12:31:23,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:31:23,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:23,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:23,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1883424024, now seen corresponding path program 1 times [2022-07-12 12:31:23,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:31:23,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243806998] [2022-07-12 12:31:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:23,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:31:23,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:31:23,651 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) [2022-07-12 12:31:23,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 12:31:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:24,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1429 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:31:24,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:31:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-12 12:31:24,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:31:24,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:31:24,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243806998] [2022-07-12 12:31:24,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243806998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:31:24,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:31:24,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:31:24,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404039936] [2022-07-12 12:31:24,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:31:24,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:31:24,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:31:24,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:31:24,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:31:24,768 INFO L87 Difference]: Start difference. First operand 5148 states and 7069 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 12:31:25,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:25,065 INFO L93 Difference]: Finished difference Result 12396 states and 16976 transitions. [2022-07-12 12:31:25,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:31:25,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 173 [2022-07-12 12:31:25,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:25,098 INFO L225 Difference]: With dead ends: 12396 [2022-07-12 12:31:25,098 INFO L226 Difference]: Without dead ends: 7277 [2022-07-12 12:31:25,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:31:25,116 INFO L413 NwaCegarLoop]: 1770 mSDtfsCounter, 846 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:25,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 2755 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 12:31:25,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2022-07-12 12:31:25,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 7266. [2022-07-12 12:31:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 5176 states have (on average 1.3096986089644513) internal successors, (6779), 5244 states have internal predecessors, (6779), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 537 states have return successors, (1575), 1535 states have call predecessors, (1575), 1551 states have call successors, (1575) [2022-07-12 12:31:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 9906 transitions. [2022-07-12 12:31:25,336 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 9906 transitions. Word has length 173 [2022-07-12 12:31:25,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:25,336 INFO L495 AbstractCegarLoop]: Abstraction has 7266 states and 9906 transitions. [2022-07-12 12:31:25,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 12:31:25,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 9906 transitions. [2022-07-12 12:31:25,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-12 12:31:25,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:25,350 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:31:25,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 12:31:25,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:31:25,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:25,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:25,572 INFO L85 PathProgramCache]: Analyzing trace with hash 857840969, now seen corresponding path program 1 times [2022-07-12 12:31:25,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:31:25,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038105399] [2022-07-12 12:31:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:25,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:31:25,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:31:25,575 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) [2022-07-12 12:31:25,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 12:31:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:26,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:31:26,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:31:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-12 12:31:26,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:31:26,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:31:26,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038105399] [2022-07-12 12:31:26,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038105399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:31:26,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:31:26,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:31:26,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287256050] [2022-07-12 12:31:26,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:31:26,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:31:26,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:31:26,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:31:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:31:26,575 INFO L87 Difference]: Start difference. First operand 7266 states and 9906 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 12:31:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:27,205 INFO L93 Difference]: Finished difference Result 17052 states and 23214 transitions. [2022-07-12 12:31:27,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:31:27,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 189 [2022-07-12 12:31:27,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:27,262 INFO L225 Difference]: With dead ends: 17052 [2022-07-12 12:31:27,262 INFO L226 Difference]: Without dead ends: 9815 [2022-07-12 12:31:27,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:31:27,284 INFO L413 NwaCegarLoop]: 1956 mSDtfsCounter, 1086 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 4774 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:27,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 4774 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 12:31:27,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9815 states. [2022-07-12 12:31:27,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9815 to 7274. [2022-07-12 12:31:27,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 5184 states have (on average 1.3092206790123457) internal successors, (6787), 5252 states have internal predecessors, (6787), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 537 states have return successors, (1575), 1535 states have call predecessors, (1575), 1551 states have call successors, (1575) [2022-07-12 12:31:27,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 9914 transitions. [2022-07-12 12:31:27,518 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 9914 transitions. Word has length 189 [2022-07-12 12:31:27,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:27,519 INFO L495 AbstractCegarLoop]: Abstraction has 7274 states and 9914 transitions. [2022-07-12 12:31:27,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 12:31:27,520 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 9914 transitions. [2022-07-12 12:31:27,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-12 12:31:27,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:27,536 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:31:27,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-12 12:31:27,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:31:27,751 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:27,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash 988618010, now seen corresponding path program 1 times [2022-07-12 12:31:27,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:31:27,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336766144] [2022-07-12 12:31:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:27,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:31:27,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:31:27,754 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) [2022-07-12 12:31:27,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-12 12:31:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:28,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 12:31:28,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:31:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-12 12:31:28,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:31:28,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:31:28,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336766144] [2022-07-12 12:31:28,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336766144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:31:28,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:31:28,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:31:28,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671114585] [2022-07-12 12:31:28,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:31:28,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:31:28,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:31:28,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:31:28,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:31:28,872 INFO L87 Difference]: Start difference. First operand 7274 states and 9914 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-12 12:31:31,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:31:31,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:31,363 INFO L93 Difference]: Finished difference Result 15558 states and 21411 transitions. [2022-07-12 12:31:31,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 12:31:31,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 242 [2022-07-12 12:31:31,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:31,423 INFO L225 Difference]: With dead ends: 15558 [2022-07-12 12:31:31,423 INFO L226 Difference]: Without dead ends: 8313 [2022-07-12 12:31:31,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:31:31,440 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 560 mSDsluCounter, 5461 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 124 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 6993 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:31,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 6993 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 12:31:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8313 states. [2022-07-12 12:31:31,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8313 to 7294. [2022-07-12 12:31:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7294 states, 5200 states have (on average 1.3082692307692307) internal successors, (6803), 5268 states have internal predecessors, (6803), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 541 states have return successors, (1587), 1539 states have call predecessors, (1587), 1551 states have call successors, (1587) [2022-07-12 12:31:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7294 states to 7294 states and 9942 transitions. [2022-07-12 12:31:31,647 INFO L78 Accepts]: Start accepts. Automaton has 7294 states and 9942 transitions. Word has length 242 [2022-07-12 12:31:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:31,648 INFO L495 AbstractCegarLoop]: Abstraction has 7294 states and 9942 transitions. [2022-07-12 12:31:31,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-12 12:31:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7294 states and 9942 transitions. [2022-07-12 12:31:31,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-12 12:31:31,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:31,663 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:31:31,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-12 12:31:31,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:31:31,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:31,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:31,872 INFO L85 PathProgramCache]: Analyzing trace with hash 498099036, now seen corresponding path program 1 times [2022-07-12 12:31:31,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:31:31,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739567486] [2022-07-12 12:31:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:31,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:31:31,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:31:31,874 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) [2022-07-12 12:31:31,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-12 12:31:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:32,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 12:31:32,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:31:33,013 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-12 12:31:33,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:31:33,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:31:33,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739567486] [2022-07-12 12:31:33,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739567486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:31:33,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:31:33,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:31:33,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225528815] [2022-07-12 12:31:33,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:31:33,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:31:33,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:31:33,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:31:33,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:31:33,015 INFO L87 Difference]: Start difference. First operand 7294 states and 9942 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-12 12:31:33,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:33,383 INFO L93 Difference]: Finished difference Result 14631 states and 19935 transitions. [2022-07-12 12:31:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:31:33,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) Word has length 248 [2022-07-12 12:31:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:33,403 INFO L225 Difference]: With dead ends: 14631 [2022-07-12 12:31:33,404 INFO L226 Difference]: Without dead ends: 7366 [2022-07-12 12:31:33,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:31:33,423 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 2 mSDsluCounter, 6870 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8017 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:33,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8017 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 12:31:33,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7366 states. [2022-07-12 12:31:33,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7366 to 7318. [2022-07-12 12:31:33,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7318 states, 5220 states have (on average 1.307088122605364) internal successors, (6823), 5284 states have internal predecessors, (6823), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 545 states have return successors, (1595), 1547 states have call predecessors, (1595), 1551 states have call successors, (1595) [2022-07-12 12:31:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7318 states to 7318 states and 9970 transitions. [2022-07-12 12:31:33,611 INFO L78 Accepts]: Start accepts. Automaton has 7318 states and 9970 transitions. Word has length 248 [2022-07-12 12:31:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:33,611 INFO L495 AbstractCegarLoop]: Abstraction has 7318 states and 9970 transitions. [2022-07-12 12:31:33,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-12 12:31:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 7318 states and 9970 transitions. [2022-07-12 12:31:33,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-12 12:31:33,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:33,626 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:31:33,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-12 12:31:33,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:31:33,843 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:33,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:33,844 INFO L85 PathProgramCache]: Analyzing trace with hash -565486566, now seen corresponding path program 2 times [2022-07-12 12:31:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:31:33,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011447169] [2022-07-12 12:31:33,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:31:33,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:31:33,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:31:33,846 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) [2022-07-12 12:31:33,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-12 12:31:40,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 12:31:40,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:31:40,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:31:40,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:31:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 96 proven. 7 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-12 12:31:40,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:31:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-07-12 12:31:41,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:31:41,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011447169] [2022-07-12 12:31:41,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011447169] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:31:41,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 12:31:41,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-12 12:31:41,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063024273] [2022-07-12 12:31:41,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 12:31:41,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:31:41,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:31:41,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:31:41,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:31:41,225 INFO L87 Difference]: Start difference. First operand 7318 states and 9970 transitions. Second operand has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 4 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-07-12 12:31:50,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:50,099 INFO L93 Difference]: Finished difference Result 43757 states and 59628 transitions. [2022-07-12 12:31:50,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:31:50,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 4 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 254 [2022-07-12 12:31:50,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:50,301 INFO L225 Difference]: With dead ends: 43757 [2022-07-12 12:31:50,301 INFO L226 Difference]: Without dead ends: 43748 [2022-07-12 12:31:50,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:31:50,324 INFO L413 NwaCegarLoop]: 2964 mSDtfsCounter, 6633 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 1282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6633 SdHoareTripleChecker+Valid, 7159 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1282 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:50,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6633 Valid, 7159 Invalid, 3824 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1282 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-07-12 12:31:50,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43748 states. [2022-07-12 12:31:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43748 to 43678. [2022-07-12 12:31:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43678 states, 31140 states have (on average 1.3082530507385999) internal successors, (40739), 31540 states have internal predecessors, (40739), 9272 states have call successors, (9272), 3218 states have call predecessors, (9272), 3265 states have return successors, (9535), 9231 states have call predecessors, (9535), 9271 states have call successors, (9535) [2022-07-12 12:31:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43678 states to 43678 states and 59546 transitions. [2022-07-12 12:31:52,532 INFO L78 Accepts]: Start accepts. Automaton has 43678 states and 59546 transitions. Word has length 254 [2022-07-12 12:31:52,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:52,533 INFO L495 AbstractCegarLoop]: Abstraction has 43678 states and 59546 transitions. [2022-07-12 12:31:52,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 4 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-07-12 12:31:52,533 INFO L276 IsEmpty]: Start isEmpty. Operand 43678 states and 59546 transitions. [2022-07-12 12:31:52,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-12 12:31:52,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:52,622 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:31:52,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-12 12:31:52,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:31:52,844 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:52,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1845350244, now seen corresponding path program 1 times [2022-07-12 12:31:52,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:31:52,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72103814] [2022-07-12 12:31:52,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:52,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:31:52,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:31:52,848 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) [2022-07-12 12:31:52,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-12 12:31:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:54,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:31:54,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:31:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-12 12:31:54,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:31:54,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:31:54,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72103814] [2022-07-12 12:31:54,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72103814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:31:54,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:31:54,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:31:54,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169948758] [2022-07-12 12:31:54,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:31:54,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:31:54,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:31:54,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:31:54,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:31:54,232 INFO L87 Difference]: Start difference. First operand 43678 states and 59546 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-12 12:31:56,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:31:59,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:00,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:32:00,735 INFO L93 Difference]: Finished difference Result 134180 states and 193049 transitions. [2022-07-12 12:32:00,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:32:00,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 254 [2022-07-12 12:32:00,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:32:01,239 INFO L225 Difference]: With dead ends: 134180 [2022-07-12 12:32:01,240 INFO L226 Difference]: Without dead ends: 90531 [2022-07-12 12:32:01,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:32:01,388 INFO L413 NwaCegarLoop]: 1755 mSDtfsCounter, 1556 mSDsluCounter, 3140 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 191 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 4895 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:32:01,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 4895 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-07-12 12:32:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90531 states. [2022-07-12 12:32:03,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90531 to 43726. [2022-07-12 12:32:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43726 states, 31188 states have (on average 1.30777863280749) internal successors, (40787), 31588 states have internal predecessors, (40787), 9272 states have call successors, (9272), 3218 states have call predecessors, (9272), 3265 states have return successors, (9535), 9231 states have call predecessors, (9535), 9271 states have call successors, (9535) [2022-07-12 12:32:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43726 states to 43726 states and 59594 transitions. [2022-07-12 12:32:03,778 INFO L78 Accepts]: Start accepts. Automaton has 43726 states and 59594 transitions. Word has length 254 [2022-07-12 12:32:03,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:32:03,779 INFO L495 AbstractCegarLoop]: Abstraction has 43726 states and 59594 transitions. [2022-07-12 12:32:03,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-12 12:32:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 43726 states and 59594 transitions. [2022-07-12 12:32:03,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-12 12:32:03,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:32:03,853 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:32:03,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-12 12:32:04,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:32:04,070 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:32:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:32:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2126872004, now seen corresponding path program 1 times [2022-07-12 12:32:04,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:32:04,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104715783] [2022-07-12 12:32:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:32:04,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:32:04,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:32:04,073 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) [2022-07-12 12:32:04,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-12 12:32:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:05,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-12 12:32:05,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:32:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-12 12:32:05,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:32:05,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:32:05,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104715783] [2022-07-12 12:32:05,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104715783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:32:05,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:32:05,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:32:05,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676299052] [2022-07-12 12:32:05,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:32:05,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:32:05,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:32:05,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:32:05,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:32:05,464 INFO L87 Difference]: Start difference. First operand 43726 states and 59594 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-12 12:32:07,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:09,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:32:10,688 INFO L93 Difference]: Finished difference Result 87783 states and 119655 transitions. [2022-07-12 12:32:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:32:10,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) Word has length 278 [2022-07-12 12:32:10,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:32:10,869 INFO L225 Difference]: With dead ends: 87783 [2022-07-12 12:32:10,869 INFO L226 Difference]: Without dead ends: 44086 [2022-07-12 12:32:10,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:32:10,986 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 0 mSDsluCounter, 5738 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6888 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:32:10,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6888 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-07-12 12:32:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44086 states. [2022-07-12 12:32:12,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44086 to 43846. [2022-07-12 12:32:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43846 states, 31284 states have (on average 1.306834164429101) internal successors, (40883), 31660 states have internal predecessors, (40883), 9272 states have call successors, (9272), 3218 states have call predecessors, (9272), 3289 states have return successors, (9631), 9279 states have call predecessors, (9631), 9271 states have call successors, (9631) [2022-07-12 12:32:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43846 states to 43846 states and 59786 transitions. [2022-07-12 12:32:12,702 INFO L78 Accepts]: Start accepts. Automaton has 43846 states and 59786 transitions. Word has length 278 [2022-07-12 12:32:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:32:12,703 INFO L495 AbstractCegarLoop]: Abstraction has 43846 states and 59786 transitions. [2022-07-12 12:32:12,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-12 12:32:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 43846 states and 59786 transitions. [2022-07-12 12:32:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-07-12 12:32:12,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:32:12,771 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:32:12,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-12 12:32:12,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:32:12,984 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:32:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:32:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash 738976054, now seen corresponding path program 1 times [2022-07-12 12:32:12,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:32:12,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359321109] [2022-07-12 12:32:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:32:12,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:32:12,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:32:12,987 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) [2022-07-12 12:32:12,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-12 12:32:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:14,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 12:32:14,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:32:14,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 12:32:14,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-12 12:32:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-07-12 12:32:14,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:32:14,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:32:14,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359321109] [2022-07-12 12:32:14,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359321109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:32:14,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:32:14,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:32:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088083097] [2022-07-12 12:32:14,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:32:14,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:32:14,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:32:14,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:32:14,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:32:14,748 INFO L87 Difference]: Start difference. First operand 43846 states and 59786 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 4 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2022-07-12 12:32:17,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:19,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:21,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:23,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:25,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:27,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:29,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:31,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:32:31,656 INFO L93 Difference]: Finished difference Result 89103 states and 121071 transitions. [2022-07-12 12:32:31,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:32:31,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 4 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 296 [2022-07-12 12:32:31,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:32:31,989 INFO L225 Difference]: With dead ends: 89103 [2022-07-12 12:32:31,989 INFO L226 Difference]: Without dead ends: 45286 [2022-07-12 12:32:32,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 289 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:32:32,091 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 4 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4463 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:32:32,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4463 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 5 Unknown, 84 Unchecked, 15.8s Time] [2022-07-12 12:32:32,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45286 states. [2022-07-12 12:32:33,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45286 to 45286. [2022-07-12 12:32:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45286 states, 32148 states have (on average 1.296348139853179) internal successors, (41675), 32524 states have internal predecessors, (41675), 9560 states have call successors, (9560), 3506 states have call predecessors, (9560), 3577 states have return successors, (9919), 9567 states have call predecessors, (9919), 9559 states have call successors, (9919) [2022-07-12 12:32:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45286 states to 45286 states and 61154 transitions. [2022-07-12 12:32:33,774 INFO L78 Accepts]: Start accepts. Automaton has 45286 states and 61154 transitions. Word has length 296 [2022-07-12 12:32:33,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:32:33,775 INFO L495 AbstractCegarLoop]: Abstraction has 45286 states and 61154 transitions. [2022-07-12 12:32:33,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 4 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2022-07-12 12:32:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 45286 states and 61154 transitions. [2022-07-12 12:32:33,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-07-12 12:32:33,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:32:33,841 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:32:33,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-07-12 12:32:34,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:32:34,042 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:32:34,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:32:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash 412391079, now seen corresponding path program 1 times [2022-07-12 12:32:34,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:32:34,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510394372] [2022-07-12 12:32:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:32:34,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:32:34,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:32:34,045 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) [2022-07-12 12:32:34,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-12 12:32:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:35,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:32:35,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:32:35,356 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-12 12:32:35,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:32:35,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:32:35,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510394372] [2022-07-12 12:32:35,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510394372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:32:35,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:32:35,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:32:35,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134680708] [2022-07-12 12:32:35,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:32:35,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:32:35,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:32:35,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:32:35,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:32:35,359 INFO L87 Difference]: Start difference. First operand 45286 states and 61154 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-12 12:32:36,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:32:36,223 INFO L93 Difference]: Finished difference Result 71109 states and 95978 transitions. [2022-07-12 12:32:36,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:32:36,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 251 [2022-07-12 12:32:36,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:32:36,298 INFO L225 Difference]: With dead ends: 71109 [2022-07-12 12:32:36,299 INFO L226 Difference]: Without dead ends: 25846 [2022-07-12 12:32:36,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:32:36,366 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 6 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:32:36,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2293 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 12:32:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25846 states. [2022-07-12 12:32:37,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25846 to 25835. [2022-07-12 12:32:37,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25835 states, 18325 states have (on average 1.296261937244202) internal successors, (23754), 18537 states have internal predecessors, (23754), 5450 states have call successors, (5450), 2024 states have call predecessors, (5450), 2059 states have return successors, (5629), 5447 states have call predecessors, (5629), 5449 states have call successors, (5629) [2022-07-12 12:32:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25835 states to 25835 states and 34833 transitions. [2022-07-12 12:32:37,177 INFO L78 Accepts]: Start accepts. Automaton has 25835 states and 34833 transitions. Word has length 251 [2022-07-12 12:32:37,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:32:37,177 INFO L495 AbstractCegarLoop]: Abstraction has 25835 states and 34833 transitions. [2022-07-12 12:32:37,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-12 12:32:37,178 INFO L276 IsEmpty]: Start isEmpty. Operand 25835 states and 34833 transitions. [2022-07-12 12:32:37,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-12 12:32:37,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:32:37,215 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:32:37,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-12 12:32:37,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:32:37,416 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:32:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:32:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash 149240916, now seen corresponding path program 1 times [2022-07-12 12:32:37,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:32:37,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569081179] [2022-07-12 12:32:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:32:37,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:32:37,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:32:37,421 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) [2022-07-12 12:32:37,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-12 12:32:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:38,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:32:38,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:32:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-12 12:32:38,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:32:38,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:32:38,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569081179] [2022-07-12 12:32:38,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569081179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:32:38,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:32:38,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:32:38,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381458108] [2022-07-12 12:32:38,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:32:38,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:32:38,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:32:38,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:32:38,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:32:38,668 INFO L87 Difference]: Start difference. First operand 25835 states and 34833 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-12 12:32:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:32:40,306 INFO L93 Difference]: Finished difference Result 56959 states and 76695 transitions. [2022-07-12 12:32:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:32:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 266 [2022-07-12 12:32:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:32:40,391 INFO L225 Difference]: With dead ends: 56959 [2022-07-12 12:32:40,391 INFO L226 Difference]: Without dead ends: 34121 [2022-07-12 12:32:40,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:32:40,435 INFO L413 NwaCegarLoop]: 1958 mSDtfsCounter, 1085 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 4774 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:32:40,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 4774 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 12:32:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34121 states. [2022-07-12 12:32:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34121 to 25835. [2022-07-12 12:32:41,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25835 states, 18325 states have (on average 1.296261937244202) internal successors, (23754), 18537 states have internal predecessors, (23754), 5450 states have call successors, (5450), 2024 states have call predecessors, (5450), 2059 states have return successors, (5629), 5447 states have call predecessors, (5629), 5449 states have call successors, (5629) [2022-07-12 12:32:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25835 states to 25835 states and 34833 transitions. [2022-07-12 12:32:41,306 INFO L78 Accepts]: Start accepts. Automaton has 25835 states and 34833 transitions. Word has length 266 [2022-07-12 12:32:41,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:32:41,307 INFO L495 AbstractCegarLoop]: Abstraction has 25835 states and 34833 transitions. [2022-07-12 12:32:41,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-12 12:32:41,307 INFO L276 IsEmpty]: Start isEmpty. Operand 25835 states and 34833 transitions. [2022-07-12 12:32:41,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-07-12 12:32:41,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:32:41,328 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:32:41,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-07-12 12:32:41,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:32:41,529 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:32:41,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:32:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1651000418, now seen corresponding path program 1 times [2022-07-12 12:32:41,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:32:41,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655028396] [2022-07-12 12:32:41,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:32:41,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:32:41,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:32:41,532 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) [2022-07-12 12:32:41,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-12 12:32:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:42,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-12 12:32:42,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:32:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-12 12:32:43,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:32:43,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:32:43,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655028396] [2022-07-12 12:32:43,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655028396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:32:43,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:32:43,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:32:43,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871898465] [2022-07-12 12:32:43,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:32:43,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:32:43,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:32:43,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:32:43,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:32:43,093 INFO L87 Difference]: Start difference. First operand 25835 states and 34833 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-12 12:32:45,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:47,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:47,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:32:47,857 INFO L93 Difference]: Finished difference Result 48847 states and 65869 transitions. [2022-07-12 12:32:47,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:32:47,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) Word has length 285 [2022-07-12 12:32:47,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:32:47,936 INFO L225 Difference]: With dead ends: 48847 [2022-07-12 12:32:47,937 INFO L226 Difference]: Without dead ends: 26009 [2022-07-12 12:32:47,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:32:47,994 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 0 mSDsluCounter, 5734 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6884 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:32:47,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6884 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-07-12 12:32:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26009 states. [2022-07-12 12:32:48,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26009 to 25859. [2022-07-12 12:32:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25859 states, 18349 states have (on average 1.2958744345740911) internal successors, (23778), 18549 states have internal predecessors, (23778), 5450 states have call successors, (5450), 2024 states have call predecessors, (5450), 2059 states have return successors, (5629), 5459 states have call predecessors, (5629), 5449 states have call successors, (5629) [2022-07-12 12:32:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25859 states to 25859 states and 34857 transitions. [2022-07-12 12:32:48,948 INFO L78 Accepts]: Start accepts. Automaton has 25859 states and 34857 transitions. Word has length 285 [2022-07-12 12:32:48,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:32:48,948 INFO L495 AbstractCegarLoop]: Abstraction has 25859 states and 34857 transitions. [2022-07-12 12:32:48,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-12 12:32:48,949 INFO L276 IsEmpty]: Start isEmpty. Operand 25859 states and 34857 transitions. [2022-07-12 12:32:48,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-12 12:32:48,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:32:48,972 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:32:49,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-07-12 12:32:49,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:32:49,173 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:32:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:32:49,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1162913572, now seen corresponding path program 2 times [2022-07-12 12:32:49,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:32:49,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129106805] [2022-07-12 12:32:49,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:32:49,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:32:49,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:32:49,176 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) [2022-07-12 12:32:49,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-12 12:32:49,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 12:32:49,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:32:49,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:32:49,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:32:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2022-07-12 12:32:49,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:32:49,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:32:49,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129106805] [2022-07-12 12:32:49,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129106805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:32:49,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:32:49,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:32:49,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111378807] [2022-07-12 12:32:49,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:32:49,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:32:49,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:32:49,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:32:49,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:32:49,858 INFO L87 Difference]: Start difference. First operand 25859 states and 34857 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-07-12 12:32:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:32:51,608 INFO L93 Difference]: Finished difference Result 58499 states and 79069 transitions. [2022-07-12 12:32:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:32:51,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 291 [2022-07-12 12:32:51,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:32:51,750 INFO L225 Difference]: With dead ends: 58499 [2022-07-12 12:32:51,750 INFO L226 Difference]: Without dead ends: 35637 [2022-07-12 12:32:51,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:32:51,819 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 1593 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 3722 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:32:51,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 3722 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 12:32:51,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35637 states. [2022-07-12 12:32:52,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35637 to 25851. [2022-07-12 12:32:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25851 states, 18341 states have (on average 1.2953492175999128) internal successors, (23758), 18541 states have internal predecessors, (23758), 5450 states have call successors, (5450), 2024 states have call predecessors, (5450), 2059 states have return successors, (5629), 5459 states have call predecessors, (5629), 5449 states have call successors, (5629) [2022-07-12 12:32:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25851 states to 25851 states and 34837 transitions. [2022-07-12 12:32:52,886 INFO L78 Accepts]: Start accepts. Automaton has 25851 states and 34837 transitions. Word has length 291 [2022-07-12 12:32:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:32:52,887 INFO L495 AbstractCegarLoop]: Abstraction has 25851 states and 34837 transitions. [2022-07-12 12:32:52,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-07-12 12:32:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand 25851 states and 34837 transitions. [2022-07-12 12:32:52,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-07-12 12:32:52,907 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:32:52,907 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:32:52,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-12 12:32:53,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:32:53,108 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:32:53,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:32:53,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1540114861, now seen corresponding path program 1 times [2022-07-12 12:32:53,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:32:53,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951818874] [2022-07-12 12:32:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:32:53,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:32:53,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:32:53,113 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) [2022-07-12 12:32:53,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-12 12:32:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:54,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1872 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-12 12:32:54,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:32:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-07-12 12:32:54,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:32:54,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:32:54,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951818874] [2022-07-12 12:32:54,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951818874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:32:54,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:32:54,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:32:54,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500515583] [2022-07-12 12:32:54,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:32:54,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:32:54,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:32:54,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:32:54,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:32:54,688 INFO L87 Difference]: Start difference. First operand 25851 states and 34837 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-12 12:32:56,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:58,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:32:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:32:59,574 INFO L93 Difference]: Finished difference Result 48879 states and 65877 transitions. [2022-07-12 12:32:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:32:59,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) Word has length 301 [2022-07-12 12:32:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:32:59,631 INFO L225 Difference]: With dead ends: 48879 [2022-07-12 12:32:59,631 INFO L226 Difference]: Without dead ends: 26025 [2022-07-12 12:32:59,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:32:59,662 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 0 mSDsluCounter, 5739 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6890 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:32:59,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6890 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-07-12 12:32:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26025 states. [2022-07-12 12:33:00,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26025 to 25875. [2022-07-12 12:33:00,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25875 states, 18365 states have (on average 1.2949632453035667) internal successors, (23782), 18553 states have internal predecessors, (23782), 5450 states have call successors, (5450), 2024 states have call predecessors, (5450), 2059 states have return successors, (5629), 5471 states have call predecessors, (5629), 5449 states have call successors, (5629) [2022-07-12 12:33:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25875 states to 25875 states and 34861 transitions. [2022-07-12 12:33:00,441 INFO L78 Accepts]: Start accepts. Automaton has 25875 states and 34861 transitions. Word has length 301 [2022-07-12 12:33:00,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:33:00,442 INFO L495 AbstractCegarLoop]: Abstraction has 25875 states and 34861 transitions. [2022-07-12 12:33:00,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-12 12:33:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand 25875 states and 34861 transitions. [2022-07-12 12:33:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-12 12:33:00,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:33:00,582 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:33:00,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-12 12:33:00,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:33:00,782 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:33:00,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:33:00,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1113645931, now seen corresponding path program 1 times [2022-07-12 12:33:00,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:33:00,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987790904] [2022-07-12 12:33:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:33:00,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:33:00,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:33:00,785 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) [2022-07-12 12:33:00,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-12 12:33:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:33:02,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:33:02,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:33:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-12 12:33:02,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:33:02,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:33:02,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987790904] [2022-07-12 12:33:02,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987790904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:33:02,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:33:02,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:33:02,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388363762] [2022-07-12 12:33:02,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:33:02,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:33:02,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:33:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:33:02,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:33:02,464 INFO L87 Difference]: Start difference. First operand 25875 states and 34861 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-12 12:33:03,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:33:03,179 INFO L93 Difference]: Finished difference Result 52015 states and 70159 transitions. [2022-07-12 12:33:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:33:03,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 307 [2022-07-12 12:33:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:33:03,277 INFO L225 Difference]: With dead ends: 52015 [2022-07-12 12:33:03,277 INFO L226 Difference]: Without dead ends: 26169 [2022-07-12 12:33:03,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:33:03,342 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 2 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:33:03,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3441 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 12:33:03,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26169 states. [2022-07-12 12:33:04,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26169 to 26043. [2022-07-12 12:33:04,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26043 states, 18491 states have (on average 1.2929533286463686) internal successors, (23908), 18679 states have internal predecessors, (23908), 5492 states have call successors, (5492), 2024 states have call predecessors, (5492), 2059 states have return successors, (5671), 5513 states have call predecessors, (5671), 5491 states have call successors, (5671) [2022-07-12 12:33:04,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26043 states to 26043 states and 35071 transitions. [2022-07-12 12:33:04,318 INFO L78 Accepts]: Start accepts. Automaton has 26043 states and 35071 transitions. Word has length 307 [2022-07-12 12:33:04,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:33:04,319 INFO L495 AbstractCegarLoop]: Abstraction has 26043 states and 35071 transitions. [2022-07-12 12:33:04,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-12 12:33:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 26043 states and 35071 transitions. [2022-07-12 12:33:04,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-07-12 12:33:04,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:33:04,345 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:33:04,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-12 12:33:04,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:33:04,552 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:33:04,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:33:04,552 INFO L85 PathProgramCache]: Analyzing trace with hash -887261089, now seen corresponding path program 1 times [2022-07-12 12:33:04,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:33:04,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741747594] [2022-07-12 12:33:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:33:04,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:33:04,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:33:04,555 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) [2022-07-12 12:33:04,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-12 12:33:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:33:06,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 1954 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:33:06,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:33:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 145 proven. 4 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-12 12:33:06,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:33:06,705 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2022-07-12 12:33:06,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:33:06,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741747594] [2022-07-12 12:33:06,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741747594] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:33:06,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 12:33:06,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-12 12:33:06,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970175147] [2022-07-12 12:33:06,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 12:33:06,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:33:06,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:33:06,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:33:06,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:33:06,707 INFO L87 Difference]: Start difference. First operand 26043 states and 35071 transitions. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 6 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 6 states have call predecessors, (46), 6 states have call successors, (46) [2022-07-12 12:33:07,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:33:07,543 INFO L93 Difference]: Finished difference Result 52729 states and 71167 transitions. [2022-07-12 12:33:07,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:33:07,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 6 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 6 states have call predecessors, (46), 6 states have call successors, (46) Word has length 324 [2022-07-12 12:33:07,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:33:07,649 INFO L225 Difference]: With dead ends: 52729 [2022-07-12 12:33:07,649 INFO L226 Difference]: Without dead ends: 26715 [2022-07-12 12:33:07,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:33:07,717 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 20 mSDsluCounter, 3438 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4594 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:33:07,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 4594 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 12:33:07,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26715 states. [2022-07-12 12:33:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26715 to 26715. [2022-07-12 12:33:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26715 states, 18995 states have (on average 1.2851803106080548) internal successors, (24412), 19183 states have internal predecessors, (24412), 5660 states have call successors, (5660), 2024 states have call predecessors, (5660), 2059 states have return successors, (5839), 5681 states have call predecessors, (5839), 5659 states have call successors, (5839) [2022-07-12 12:33:08,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26715 states to 26715 states and 35911 transitions. [2022-07-12 12:33:08,809 INFO L78 Accepts]: Start accepts. Automaton has 26715 states and 35911 transitions. Word has length 324 [2022-07-12 12:33:08,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:33:08,810 INFO L495 AbstractCegarLoop]: Abstraction has 26715 states and 35911 transitions. [2022-07-12 12:33:08,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 6 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 6 states have call predecessors, (46), 6 states have call successors, (46) [2022-07-12 12:33:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand 26715 states and 35911 transitions. [2022-07-12 12:33:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-07-12 12:33:08,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:33:08,838 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:33:08,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-12 12:33:09,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:33:09,060 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:33:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:33:09,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1854702113, now seen corresponding path program 2 times [2022-07-12 12:33:09,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:33:09,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455077748] [2022-07-12 12:33:09,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:33:09,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:33:09,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:33:09,063 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:33:09,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-12 12:33:16,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 12:33:16,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:33:16,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 12:33:16,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:33:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 197 proven. 60 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2022-07-12 12:33:17,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:33:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 17 proven. 60 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2022-07-12 12:33:17,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:33:17,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455077748] [2022-07-12 12:33:17,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455077748] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:33:17,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 12:33:17,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-07-12 12:33:17,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784701284] [2022-07-12 12:33:17,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 12:33:17,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 12:33:17,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:33:17,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 12:33:17,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-07-12 12:33:17,491 INFO L87 Difference]: Start difference. First operand 26715 states and 35911 transitions. Second operand has 16 states, 16 states have (on average 13.4375) internal successors, (215), 16 states have internal predecessors, (215), 14 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) [2022-07-12 12:33:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:33:19,051 INFO L93 Difference]: Finished difference Result 54745 states and 73855 transitions. [2022-07-12 12:33:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 12:33:19,052 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.4375) internal successors, (215), 16 states have internal predecessors, (215), 14 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) Word has length 392 [2022-07-12 12:33:19,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:33:19,129 INFO L225 Difference]: With dead ends: 54745 [2022-07-12 12:33:19,129 INFO L226 Difference]: Without dead ends: 28059 [2022-07-12 12:33:19,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=316, Unknown=0, NotChecked=0, Total=506 [2022-07-12 12:33:19,186 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 52 mSDsluCounter, 10375 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 11547 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:33:19,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 11547 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 12:33:19,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28059 states. [2022-07-12 12:33:20,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28059 to 28059. [2022-07-12 12:33:20,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28059 states, 20003 states have (on average 1.270809378593211) internal successors, (25420), 20191 states have internal predecessors, (25420), 5996 states have call successors, (5996), 2024 states have call predecessors, (5996), 2059 states have return successors, (6175), 6017 states have call predecessors, (6175), 5995 states have call successors, (6175) [2022-07-12 12:33:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28059 states to 28059 states and 37591 transitions. [2022-07-12 12:33:20,149 INFO L78 Accepts]: Start accepts. Automaton has 28059 states and 37591 transitions. Word has length 392 [2022-07-12 12:33:20,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:33:20,150 INFO L495 AbstractCegarLoop]: Abstraction has 28059 states and 37591 transitions. [2022-07-12 12:33:20,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.4375) internal successors, (215), 16 states have internal predecessors, (215), 14 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) [2022-07-12 12:33:20,150 INFO L276 IsEmpty]: Start isEmpty. Operand 28059 states and 37591 transitions. [2022-07-12 12:33:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2022-07-12 12:33:20,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:33:20,175 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 13, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:33:20,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-12 12:33:20,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:33:20,384 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:33:20,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:33:20,384 INFO L85 PathProgramCache]: Analyzing trace with hash -398505761, now seen corresponding path program 3 times [2022-07-12 12:33:20,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:33:20,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499868703] [2022-07-12 12:33:20,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 12:33:20,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:33:20,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:33:20,387 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:33:20,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-12 12:33:26,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 12:33:26,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:33:26,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:33:26,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:33:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2183 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 2094 trivial. 0 not checked. [2022-07-12 12:33:26,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:33:26,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:33:26,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499868703] [2022-07-12 12:33:26,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499868703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:33:26,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:33:26,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:33:26,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979727691] [2022-07-12 12:33:26,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:33:26,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:33:26,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:33:26,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:33:26,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:33:26,985 INFO L87 Difference]: Start difference. First operand 28059 states and 37591 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-12 12:33:29,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:33:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:33:29,994 INFO L93 Difference]: Finished difference Result 58103 states and 78455 transitions. [2022-07-12 12:33:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:33:29,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) Word has length 528 [2022-07-12 12:33:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:33:30,091 INFO L225 Difference]: With dead ends: 58103 [2022-07-12 12:33:30,091 INFO L226 Difference]: Without dead ends: 30073 [2022-07-12 12:33:30,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:33:30,143 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 466 mSDsluCounter, 4226 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 5829 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:33:30,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 5829 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 12:33:30,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30073 states. [2022-07-12 12:33:31,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30073 to 28143. [2022-07-12 12:33:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28143 states, 20087 states have (on average 1.271170408722059) internal successors, (25534), 20287 states have internal predecessors, (25534), 5984 states have call successors, (5984), 2024 states have call predecessors, (5984), 2071 states have return successors, (6175), 6005 states have call predecessors, (6175), 5983 states have call successors, (6175) [2022-07-12 12:33:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28143 states to 28143 states and 37693 transitions. [2022-07-12 12:33:31,156 INFO L78 Accepts]: Start accepts. Automaton has 28143 states and 37693 transitions. Word has length 528 [2022-07-12 12:33:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:33:31,157 INFO L495 AbstractCegarLoop]: Abstraction has 28143 states and 37693 transitions. [2022-07-12 12:33:31,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-12 12:33:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand 28143 states and 37693 transitions. [2022-07-12 12:33:31,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2022-07-12 12:33:31,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:33:31,181 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 13, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:33:31,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-12 12:33:31,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:33:31,401 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:33:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:33:31,402 INFO L85 PathProgramCache]: Analyzing trace with hash 626504496, now seen corresponding path program 1 times [2022-07-12 12:33:31,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:33:31,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013757820] [2022-07-12 12:33:31,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:33:31,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:33:31,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:33:31,404 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:33:31,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-12 12:33:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:33:35,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 12:33:35,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:33:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 301 proven. 364 refuted. 0 times theorem prover too weak. 1519 trivial. 0 not checked. [2022-07-12 12:33:36,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:33:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 17 proven. 364 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2022-07-12 12:33:37,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:33:37,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013757820] [2022-07-12 12:33:37,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013757820] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:33:37,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 12:33:37,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-07-12 12:33:37,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139743977] [2022-07-12 12:33:37,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 12:33:37,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-12 12:33:37,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:33:37,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-12 12:33:37,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2022-07-12 12:33:37,225 INFO L87 Difference]: Start difference. First operand 28143 states and 37693 transitions. Second operand has 32 states, 32 states have (on average 8.28125) internal successors, (265), 32 states have internal predecessors, (265), 30 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (70), 30 states have call predecessors, (70), 30 states have call successors, (70) [2022-07-12 12:33:40,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:33:40,560 INFO L93 Difference]: Finished difference Result 58945 states and 79435 transitions. [2022-07-12 12:33:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 12:33:40,561 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.28125) internal successors, (265), 32 states have internal predecessors, (265), 30 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (70), 30 states have call predecessors, (70), 30 states have call successors, (70) Word has length 529 [2022-07-12 12:33:40,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:33:40,653 INFO L225 Difference]: With dead ends: 58945 [2022-07-12 12:33:40,654 INFO L226 Difference]: Without dead ends: 30831 [2022-07-12 12:33:40,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=766, Invalid=1396, Unknown=0, NotChecked=0, Total=2162 [2022-07-12 12:33:40,728 INFO L413 NwaCegarLoop]: 1200 mSDtfsCounter, 118 mSDsluCounter, 17500 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 18700 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:33:40,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 18700 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 12:33:40,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30831 states. [2022-07-12 12:33:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30831 to 30831. [2022-07-12 12:33:41,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30831 states, 22103 states have (on average 1.2464371352305117) internal successors, (27550), 22303 states have internal predecessors, (27550), 6656 states have call successors, (6656), 2024 states have call predecessors, (6656), 2071 states have return successors, (6847), 6677 states have call predecessors, (6847), 6655 states have call successors, (6847) [2022-07-12 12:33:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30831 states to 30831 states and 41053 transitions. [2022-07-12 12:33:41,806 INFO L78 Accepts]: Start accepts. Automaton has 30831 states and 41053 transitions. Word has length 529 [2022-07-12 12:33:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:33:41,806 INFO L495 AbstractCegarLoop]: Abstraction has 30831 states and 41053 transitions. [2022-07-12 12:33:41,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.28125) internal successors, (265), 32 states have internal predecessors, (265), 30 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (70), 30 states have call predecessors, (70), 30 states have call successors, (70) [2022-07-12 12:33:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 30831 states and 41053 transitions. [2022-07-12 12:33:41,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2022-07-12 12:33:41,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:33:41,834 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 29, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:33:41,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-12 12:33:42,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:33:42,050 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:33:42,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:33:42,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1804852528, now seen corresponding path program 2 times [2022-07-12 12:33:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:33:42,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336791088] [2022-07-12 12:33:42,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:33:42,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:33:42,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:33:42,053 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:33:42,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-12 12:33:56,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 12:33:56,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:33:56,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 3998 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-12 12:33:56,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:33:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8336 backedges. 509 proven. 1740 refuted. 0 times theorem prover too weak. 6087 trivial. 0 not checked. [2022-07-12 12:33:59,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:34:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8336 backedges. 17 proven. 1740 refuted. 0 times theorem prover too weak. 6579 trivial. 0 not checked. [2022-07-12 12:34:03,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:34:03,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336791088] [2022-07-12 12:34:03,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336791088] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:34:03,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 12:34:03,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2022-07-12 12:34:03,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052541840] [2022-07-12 12:34:03,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 12:34:03,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-07-12 12:34:03,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:34:03,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-07-12 12:34:03,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2022-07-12 12:34:03,550 INFO L87 Difference]: Start difference. First operand 30831 states and 41053 transitions. Second operand has 64 states, 64 states have (on average 5.640625) internal successors, (361), 64 states have internal predecessors, (361), 62 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 62 states have call predecessors, (102), 62 states have call successors, (102) [2022-07-12 12:34:15,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:34:15,307 INFO L93 Difference]: Finished difference Result 67009 states and 90187 transitions. [2022-07-12 12:34:15,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-12 12:34:15,308 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.640625) internal successors, (361), 64 states have internal predecessors, (361), 62 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 62 states have call predecessors, (102), 62 states have call successors, (102) Word has length 801 [2022-07-12 12:34:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:34:15,415 INFO L225 Difference]: With dead ends: 67009 [2022-07-12 12:34:15,415 INFO L226 Difference]: Without dead ends: 36207 [2022-07-12 12:34:15,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1631 GetRequests, 1538 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=3070, Invalid=5860, Unknown=0, NotChecked=0, Total=8930 [2022-07-12 12:34:15,492 INFO L413 NwaCegarLoop]: 1264 mSDtfsCounter, 246 mSDsluCounter, 38309 mSDsCounter, 0 mSdLazyCounter, 3540 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 39573 SdHoareTripleChecker+Invalid, 3723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 3540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:34:15,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 39573 Invalid, 3723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 3540 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-12 12:34:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36207 states. [2022-07-12 12:34:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36207 to 36207. [2022-07-12 12:34:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36207 states, 26135 states have (on average 1.2084178304955042) internal successors, (31582), 26335 states have internal predecessors, (31582), 8000 states have call successors, (8000), 2024 states have call predecessors, (8000), 2071 states have return successors, (8191), 8021 states have call predecessors, (8191), 7999 states have call successors, (8191) [2022-07-12 12:34:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36207 states to 36207 states and 47773 transitions. [2022-07-12 12:34:17,022 INFO L78 Accepts]: Start accepts. Automaton has 36207 states and 47773 transitions. Word has length 801 [2022-07-12 12:34:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:34:17,023 INFO L495 AbstractCegarLoop]: Abstraction has 36207 states and 47773 transitions. [2022-07-12 12:34:17,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.640625) internal successors, (361), 64 states have internal predecessors, (361), 62 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 62 states have call predecessors, (102), 62 states have call successors, (102) [2022-07-12 12:34:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 36207 states and 47773 transitions. [2022-07-12 12:34:17,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2022-07-12 12:34:17,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:34:17,063 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 63, 63, 63, 63, 62, 62, 62, 62, 61, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:34:17,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-12 12:34:17,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:34:17,265 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:34:17,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:34:17,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1200632112, now seen corresponding path program 3 times [2022-07-12 12:34:17,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:34:17,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205568971] [2022-07-12 12:34:17,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 12:34:17,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:34:17,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:34:17,270 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:34:17,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-12 12:34:24,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 12:34:24,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:34:24,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:34:24,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:34:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 33696 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 33607 trivial. 0 not checked. [2022-07-12 12:34:24,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:34:24,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:34:24,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205568971] [2022-07-12 12:34:24,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205568971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:34:24,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:34:24,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:34:24,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076663961] [2022-07-12 12:34:24,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:34:24,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:34:24,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:34:24,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:34:24,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:34:24,219 INFO L87 Difference]: Start difference. First operand 36207 states and 47773 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-12 12:34:26,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:34:27,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:34:27,734 INFO L93 Difference]: Finished difference Result 69937 states and 92749 transitions. [2022-07-12 12:34:27,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:34:27,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) Word has length 1345 [2022-07-12 12:34:27,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:34:27,825 INFO L225 Difference]: With dead ends: 69937 [2022-07-12 12:34:27,825 INFO L226 Difference]: Without dead ends: 38203 [2022-07-12 12:34:27,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1345 GetRequests, 1341 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:34:27,888 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 465 mSDsluCounter, 4227 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 5831 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:34:27,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 5831 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 12:34:27,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38203 states. [2022-07-12 12:34:29,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38203 to 36219. [2022-07-12 12:34:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36219 states, 26147 states have (on average 1.2087811221172602) internal successors, (31606), 26347 states have internal predecessors, (31606), 8000 states have call successors, (8000), 2024 states have call predecessors, (8000), 2071 states have return successors, (8191), 8021 states have call predecessors, (8191), 7999 states have call successors, (8191) [2022-07-12 12:34:29,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36219 states to 36219 states and 47797 transitions. [2022-07-12 12:34:29,430 INFO L78 Accepts]: Start accepts. Automaton has 36219 states and 47797 transitions. Word has length 1345 [2022-07-12 12:34:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:34:29,430 INFO L495 AbstractCegarLoop]: Abstraction has 36219 states and 47797 transitions. [2022-07-12 12:34:29,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-12 12:34:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 36219 states and 47797 transitions. [2022-07-12 12:34:29,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2022-07-12 12:34:29,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:34:29,469 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 63, 63, 63, 63, 62, 62, 62, 62, 61, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:34:29,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-12 12:34:29,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:34:29,670 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:34:29,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:34:29,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1851946687, now seen corresponding path program 1 times [2022-07-12 12:34:29,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:34:29,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539601861] [2022-07-12 12:34:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:34:29,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:34:29,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:34:29,674 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:34:29,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-12 12:34:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:34:50,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 6091 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-12 12:34:50,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:34:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 33697 backedges. 925 proven. 7564 refuted. 0 times theorem prover too weak. 25208 trivial. 0 not checked. [2022-07-12 12:34:56,417 INFO L328 TraceCheckSpWp]: Computing backward predicates...