./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.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 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:35:03,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:35:03,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:35:03,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:35:03,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:35:03,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:35:03,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:35:03,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:35:03,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:35:03,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:35:03,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:35:03,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:35:03,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:35:03,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:35:03,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:35:03,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:35:03,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:35:03,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:35:03,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:35:03,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:35:03,310 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:35:03,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:35:03,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:35:03,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:35:03,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:35:03,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:35:03,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:35:03,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:35:03,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:35:03,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:35:03,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:35:03,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:35:03,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:35:03,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:35:03,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:35:03,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:35:03,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:35:03,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:35:03,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:35:03,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:35:03,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:35:03,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:35:03,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 12:35:03,370 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:35:03,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:35:03,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:35:03,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:35:03,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:35:03,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:35:03,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:35:03,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:35:03,374 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:35:03,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:35:03,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 12:35:03,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:35:03,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:35:03,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:35:03,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:35:03,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:35:03,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:35:03,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:35:03,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:35:03,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:35:03,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:35:03,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:35:03,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:35:03,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:35:03,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:35:03,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 12:35:03,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 12:35:03,378 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:35:03,379 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:35:03,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:35:03,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 [2022-07-21 12:35:03,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:35:03,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:35:03,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:35:03,756 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:35:03,756 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:35:03,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-21 12:35:03,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd7f26a1/c0e7c8626e0b47d4ab0456e9bcd96679/FLAG287662a4b [2022-07-21 12:35:04,595 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:35:04,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-21 12:35:04,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd7f26a1/c0e7c8626e0b47d4ab0456e9bcd96679/FLAG287662a4b [2022-07-21 12:35:04,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd7f26a1/c0e7c8626e0b47d4ab0456e9bcd96679 [2022-07-21 12:35:04,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:35:04,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:35:04,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:35:04,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:35:04,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:35:04,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:35:04" (1/1) ... [2022-07-21 12:35:04,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cceeb1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:04, skipping insertion in model container [2022-07-21 12:35:04,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:35:04" (1/1) ... [2022-07-21 12:35:04,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:35:04,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:35:06,292 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-21 12:35:06,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:35:06,519 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:35:06,714 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1650) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 12:35:06,722 INFO L158 Benchmark]: Toolchain (without parser) took 2035.20ms. Allocated memory was 50.3MB in the beginning and 88.1MB in the end (delta: 37.7MB). Free memory was 26.4MB in the beginning and 37.1MB in the end (delta: -10.7MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2022-07-21 12:35:06,723 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 50.3MB. Free memory was 32.0MB in the beginning and 32.0MB in the end (delta: 31.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 12:35:06,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2033.08ms. Allocated memory was 50.3MB in the beginning and 88.1MB in the end (delta: 37.7MB). Free memory was 26.1MB in the beginning and 37.1MB in the end (delta: -11.0MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2022-07-21 12:35:06,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 50.3MB. Free memory was 32.0MB in the beginning and 32.0MB in the end (delta: 31.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2033.08ms. Allocated memory was 50.3MB in the beginning and 88.1MB in the end (delta: 37.7MB). Free memory was 26.1MB in the beginning and 37.1MB in the end (delta: -11.0MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.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 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:35:08,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:35:08,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:35:08,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:35:08,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:35:08,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:35:08,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:35:08,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:35:08,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:35:08,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:35:08,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:35:08,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:35:08,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:35:08,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:35:08,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:35:08,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:35:08,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:35:08,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:35:08,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:35:08,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:35:08,581 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:35:08,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:35:08,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:35:08,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:35:08,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:35:08,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:35:08,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:35:08,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:35:08,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:35:08,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:35:08,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:35:08,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:35:08,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:35:08,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:35:08,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:35:08,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:35:08,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:35:08,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:35:08,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:35:08,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:35:08,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:35:08,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:35:08,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 12:35:08,650 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:35:08,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:35:08,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:35:08,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:35:08,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:35:08,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:35:08,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:35:08,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:35:08,653 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:35:08,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:35:08,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:35:08,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:35:08,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:35:08,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:35:08,655 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 12:35:08,656 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 12:35:08,656 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 12:35:08,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:35:08,657 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:35:08,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:35:08,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:35:08,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:35:08,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:35:08,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:35:08,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:35:08,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:35:08,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:35:08,659 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 12:35:08,659 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 12:35:08,659 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:35:08,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:35:08,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:35:08,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 12:35:08,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 [2022-07-21 12:35:08,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:35:09,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:35:09,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:35:09,011 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:35:09,012 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:35:09,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-21 12:35:09,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e800ab110/e48a77ca2df94813b9bf45b0c45f1343/FLAGfd0371c6c [2022-07-21 12:35:09,780 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:35:09,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-21 12:35:09,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e800ab110/e48a77ca2df94813b9bf45b0c45f1343/FLAGfd0371c6c [2022-07-21 12:35:09,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e800ab110/e48a77ca2df94813b9bf45b0c45f1343 [2022-07-21 12:35:09,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:35:09,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:35:09,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:35:09,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:35:09,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:35:09,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:35:09" (1/1) ... [2022-07-21 12:35:09,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4176b67e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:09, skipping insertion in model container [2022-07-21 12:35:09,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:35:09" (1/1) ... [2022-07-21 12:35:09,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:35:10,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:35:11,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-21 12:35:11,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:35:12,035 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 12:35:12,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:35:12,334 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-21 12:35:12,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:35:12,395 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:35:12,657 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-21 12:35:12,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:35:12,796 INFO L208 MainTranslator]: Completed translation [2022-07-21 12:35:12,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:12 WrapperNode [2022-07-21 12:35:12,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 12:35:12,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 12:35:12,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 12:35:12,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 12:35:12,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:12" (1/1) ... [2022-07-21 12:35:12,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:12" (1/1) ... [2022-07-21 12:35:13,016 INFO L137 Inliner]: procedures = 265, calls = 1509, calls flagged for inlining = 86, calls inlined = 78, statements flattened = 3180 [2022-07-21 12:35:13,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 12:35:13,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 12:35:13,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 12:35:13,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 12:35:13,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:12" (1/1) ... [2022-07-21 12:35:13,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:12" (1/1) ... [2022-07-21 12:35:13,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:12" (1/1) ... [2022-07-21 12:35:13,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:12" (1/1) ... [2022-07-21 12:35:13,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:12" (1/1) ... [2022-07-21 12:35:13,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:12" (1/1) ... [2022-07-21 12:35:13,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:12" (1/1) ... [2022-07-21 12:35:13,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 12:35:13,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 12:35:13,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 12:35:13,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 12:35:13,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:12" (1/1) ... [2022-07-21 12:35:13,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:35:13,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:35:13,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 12:35:13,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 12:35:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 12:35:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-21 12:35:13,353 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-21 12:35:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-21 12:35:13,353 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-21 12:35:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 12:35:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2022-07-21 12:35:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2022-07-21 12:35:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 12:35:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 12:35:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 12:35:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 12:35:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 12:35:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 12:35:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 12:35:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 12:35:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-07-21 12:35:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-07-21 12:35:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2022-07-21 12:35:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2022-07-21 12:35:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 12:35:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 12:35:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-07-21 12:35:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-07-21 12:35:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-21 12:35:13,357 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-21 12:35:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 12:35:13,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 12:35:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2022-07-21 12:35:13,357 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2022-07-21 12:35:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-07-21 12:35:13,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-07-21 12:35:13,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 12:35:13,358 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 12:35:13,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 12:35:13,358 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 12:35:13,358 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2022-07-21 12:35:13,358 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2022-07-21 12:35:13,359 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 12:35:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 12:35:13,359 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2022-07-21 12:35:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2022-07-21 12:35:13,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 12:35:13,359 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-21 12:35:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-21 12:35:13,360 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-07-21 12:35:13,360 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-07-21 12:35:13,360 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2022-07-21 12:35:13,360 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2022-07-21 12:35:13,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 12:35:13,360 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-07-21 12:35:13,360 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-07-21 12:35:13,361 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-07-21 12:35:13,361 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-07-21 12:35:13,361 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 12:35:13,361 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 12:35:13,361 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2022-07-21 12:35:13,361 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2022-07-21 12:35:13,361 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-21 12:35:13,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-21 12:35:13,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2022-07-21 12:35:13,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2022-07-21 12:35:13,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 12:35:13,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 12:35:13,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 12:35:13,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 12:35:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 12:35:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 12:35:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-21 12:35:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 12:35:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 12:35:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 12:35:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2022-07-21 12:35:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2022-07-21 12:35:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2022-07-21 12:35:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2022-07-21 12:35:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-21 12:35:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-21 12:35:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-07-21 12:35:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-07-21 12:35:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-21 12:35:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-21 12:35:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-21 12:35:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-21 12:35:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2022-07-21 12:35:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2022-07-21 12:35:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-21 12:35:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-21 12:35:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-21 12:35:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-21 12:35:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-21 12:35:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-21 12:35:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2022-07-21 12:35:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2022-07-21 12:35:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 12:35:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 12:35:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2022-07-21 12:35:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2022-07-21 12:35:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2022-07-21 12:35:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2022-07-21 12:35:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2022-07-21 12:35:13,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2022-07-21 12:35:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2022-07-21 12:35:13,368 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2022-07-21 12:35:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 12:35:13,368 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 12:35:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-21 12:35:13,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-21 12:35:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-21 12:35:13,369 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-21 12:35:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2022-07-21 12:35:13,369 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2022-07-21 12:35:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-07-21 12:35:13,369 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-07-21 12:35:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-07-21 12:35:13,370 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-07-21 12:35:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2022-07-21 12:35:13,370 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2022-07-21 12:35:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2022-07-21 12:35:13,370 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2022-07-21 12:35:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 12:35:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 12:35:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 12:35:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 12:35:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 12:35:13,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 12:35:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-21 12:35:13,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-21 12:35:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2022-07-21 12:35:13,372 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2022-07-21 12:35:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 12:35:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 12:35:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2022-07-21 12:35:13,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2022-07-21 12:35:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-21 12:35:13,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-21 12:35:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 12:35:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 12:35:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 12:35:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 12:35:13,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 12:35:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 12:35:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-07-21 12:35:13,373 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-07-21 12:35:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2022-07-21 12:35:13,374 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2022-07-21 12:35:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-21 12:35:13,374 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-21 12:35:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2022-07-21 12:35:13,374 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2022-07-21 12:35:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2022-07-21 12:35:13,375 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2022-07-21 12:35:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-07-21 12:35:13,375 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-07-21 12:35:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2022-07-21 12:35:13,375 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2022-07-21 12:35:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-21 12:35:13,375 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-21 12:35:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-07-21 12:35:13,376 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-07-21 12:35:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2022-07-21 12:35:13,376 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2022-07-21 12:35:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2022-07-21 12:35:13,376 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2022-07-21 12:35:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2022-07-21 12:35:13,376 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2022-07-21 12:35:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 12:35:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2022-07-21 12:35:13,377 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2022-07-21 12:35:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-21 12:35:13,377 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-21 12:35:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 12:35:13,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 12:35:14,005 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 12:35:14,009 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 12:35:14,647 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 12:35:27,717 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 12:35:27,731 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 12:35:27,731 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 12:35:27,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:35:27 BoogieIcfgContainer [2022-07-21 12:35:27,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 12:35:27,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 12:35:27,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 12:35:27,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 12:35:27,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:35:09" (1/3) ... [2022-07-21 12:35:27,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@888bc8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:35:27, skipping insertion in model container [2022-07-21 12:35:27,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:35:12" (2/3) ... [2022-07-21 12:35:27,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@888bc8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:35:27, skipping insertion in model container [2022-07-21 12:35:27,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:35:27" (3/3) ... [2022-07-21 12:35:27,743 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-21 12:35:27,756 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 12:35:27,756 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 12:35:27,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 12:35:27,830 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@4d8b1b56, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7bda3909 [2022-07-21 12:35:27,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 12:35:27,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 769 states have (on average 1.340702210663199) internal successors, (1031), 808 states have internal predecessors, (1031), 261 states have call successors, (261), 71 states have call predecessors, (261), 70 states have return successors, (255), 247 states have call predecessors, (255), 255 states have call successors, (255) [2022-07-21 12:35:27,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 12:35:27,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:27,849 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:35:27,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:27,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:27,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1615853478, now seen corresponding path program 1 times [2022-07-21 12:35:27,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:27,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643896157] [2022-07-21 12:35:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:35:27,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:27,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:27,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:27,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 12:35:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:35:29,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 12:35:29,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-21 12:35:29,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:35:29,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:29,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643896157] [2022-07-21 12:35:29,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643896157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:35:29,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:35:29,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:35:29,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108762311] [2022-07-21 12:35:29,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:35:29,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 12:35:29,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:29,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 12:35:29,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 12:35:29,091 INFO L87 Difference]: Start difference. First operand has 1102 states, 769 states have (on average 1.340702210663199) internal successors, (1031), 808 states have internal predecessors, (1031), 261 states have call successors, (261), 71 states have call predecessors, (261), 70 states have return successors, (255), 247 states have call predecessors, (255), 255 states have call successors, (255) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 12:35:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:29,267 INFO L93 Difference]: Finished difference Result 2199 states and 3148 transitions. [2022-07-21 12:35:29,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 12:35:29,269 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-21 12:35:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:29,294 INFO L225 Difference]: With dead ends: 2199 [2022-07-21 12:35:29,295 INFO L226 Difference]: Without dead ends: 1089 [2022-07-21 12:35:29,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 12:35:29,313 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:29,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:35:29,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-07-21 12:35:29,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1089. [2022-07-21 12:35:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 764 states have (on average 1.331151832460733) internal successors, (1017), 795 states have internal predecessors, (1017), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-21 12:35:29,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1521 transitions. [2022-07-21 12:35:29,449 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1521 transitions. Word has length 72 [2022-07-21 12:35:29,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:29,449 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1521 transitions. [2022-07-21 12:35:29,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 12:35:29,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1521 transitions. [2022-07-21 12:35:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 12:35:29,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:29,456 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:35:29,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 12:35:29,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:29,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:29,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:29,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1669556384, now seen corresponding path program 1 times [2022-07-21 12:35:29,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:29,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405130499] [2022-07-21 12:35:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:35:29,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:29,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:29,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:29,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 12:35:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:35:30,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 12:35:30,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 12:35:30,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:35:30,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:30,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405130499] [2022-07-21 12:35:30,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405130499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:35:30,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:35:30,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:35:30,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734232367] [2022-07-21 12:35:30,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:35:30,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:35:30,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:30,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:35:30,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:35:30,987 INFO L87 Difference]: Start difference. First operand 1089 states and 1521 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 12:35:31,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:31,187 INFO L93 Difference]: Finished difference Result 2171 states and 3037 transitions. [2022-07-21 12:35:31,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 12:35:31,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2022-07-21 12:35:31,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:31,198 INFO L225 Difference]: With dead ends: 2171 [2022-07-21 12:35:31,199 INFO L226 Difference]: Without dead ends: 1090 [2022-07-21 12:35:31,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:35:31,206 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 364 mSDsluCounter, 4105 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:31,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 5624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:35:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-21 12:35:31,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-21 12:35:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 765 states have (on average 1.330718954248366) internal successors, (1018), 796 states have internal predecessors, (1018), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-21 12:35:31,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1522 transitions. [2022-07-21 12:35:31,273 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1522 transitions. Word has length 72 [2022-07-21 12:35:31,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:31,275 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1522 transitions. [2022-07-21 12:35:31,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 12:35:31,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1522 transitions. [2022-07-21 12:35:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 12:35:31,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:31,282 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:35:31,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 12:35:31,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:31,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:31,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:31,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2122471599, now seen corresponding path program 1 times [2022-07-21 12:35:31,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:31,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648693886] [2022-07-21 12:35:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:35:31,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:31,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:31,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:31,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 12:35:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:35:32,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 12:35:32,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 12:35:32,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:35:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 12:35:33,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:33,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648693886] [2022-07-21 12:35:33,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648693886] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:35:33,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:35:33,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-07-21 12:35:33,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218560526] [2022-07-21 12:35:33,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:35:33,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 12:35:33,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:33,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 12:35:33,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 12:35:33,186 INFO L87 Difference]: Start difference. First operand 1090 states and 1522 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 12:35:33,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:33,720 INFO L93 Difference]: Finished difference Result 2173 states and 3039 transitions. [2022-07-21 12:35:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 12:35:33,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-07-21 12:35:33,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:33,728 INFO L225 Difference]: With dead ends: 2173 [2022-07-21 12:35:33,728 INFO L226 Difference]: Without dead ends: 1091 [2022-07-21 12:35:33,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-21 12:35:33,734 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 729 mSDsluCounter, 7135 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 8654 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:33,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 8654 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:35:33,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-21 12:35:33,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-07-21 12:35:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 766 states have (on average 1.3302872062663185) internal successors, (1019), 797 states have internal predecessors, (1019), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-21 12:35:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1523 transitions. [2022-07-21 12:35:33,777 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1523 transitions. Word has length 73 [2022-07-21 12:35:33,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:33,778 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1523 transitions. [2022-07-21 12:35:33,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 12:35:33,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1523 transitions. [2022-07-21 12:35:33,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 12:35:33,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:33,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:35:33,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 12:35:34,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:34,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:34,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:34,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1017025920, now seen corresponding path program 2 times [2022-07-21 12:35:34,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:34,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202623981] [2022-07-21 12:35:34,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:35:34,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:34,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:34,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:34,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 12:35:34,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:35:34,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:35:34,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:35:34,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 12:35:35,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:35:35,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:35,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202623981] [2022-07-21 12:35:35,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202623981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:35:35,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:35:35,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:35:35,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353295223] [2022-07-21 12:35:35,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:35:35,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:35:35,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:35,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:35:35,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:35,434 INFO L87 Difference]: Start difference. First operand 1091 states and 1523 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 12:35:35,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:35,468 INFO L93 Difference]: Finished difference Result 1093 states and 1524 transitions. [2022-07-21 12:35:35,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:35:35,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 74 [2022-07-21 12:35:35,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:35,475 INFO L225 Difference]: With dead ends: 1093 [2022-07-21 12:35:35,476 INFO L226 Difference]: Without dead ends: 1090 [2022-07-21 12:35:35,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:35,478 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1475 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:35,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1518 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:35:35,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-21 12:35:35,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-21 12:35:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 766 states have (on average 1.328981723237598) internal successors, (1018), 796 states have internal predecessors, (1018), 254 states have call successors, (254), 70 states have call predecessors, (254), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-21 12:35:35,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1521 transitions. [2022-07-21 12:35:35,521 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1521 transitions. Word has length 74 [2022-07-21 12:35:35,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:35,522 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1521 transitions. [2022-07-21 12:35:35,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 12:35:35,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1521 transitions. [2022-07-21 12:35:35,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 12:35:35,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:35,524 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:35:35,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 12:35:35,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:35,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:35,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:35,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1462680797, now seen corresponding path program 1 times [2022-07-21 12:35:35,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:35,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349684896] [2022-07-21 12:35:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:35:35,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:35,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:35,747 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:35,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 12:35:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:35:36,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 12:35:36,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 12:35:36,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:35:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 12:35:37,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:37,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349684896] [2022-07-21 12:35:37,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349684896] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:35:37,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:35:37,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-21 12:35:37,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994037437] [2022-07-21 12:35:37,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:35:37,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 12:35:37,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 12:35:37,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-21 12:35:37,480 INFO L87 Difference]: Start difference. First operand 1090 states and 1521 transitions. Second operand has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 12:35:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:37,817 INFO L93 Difference]: Finished difference Result 2173 states and 3037 transitions. [2022-07-21 12:35:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:35:37,818 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 75 [2022-07-21 12:35:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:37,825 INFO L225 Difference]: With dead ends: 2173 [2022-07-21 12:35:37,825 INFO L226 Difference]: Without dead ends: 1091 [2022-07-21 12:35:37,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-21 12:35:37,831 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 365 mSDsluCounter, 9713 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 11230 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:37,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 11230 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:35:37,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-21 12:35:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-07-21 12:35:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 767 states have (on average 1.3285528031290743) internal successors, (1019), 797 states have internal predecessors, (1019), 254 states have call successors, (254), 70 states have call predecessors, (254), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-21 12:35:37,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1522 transitions. [2022-07-21 12:35:37,869 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1522 transitions. Word has length 75 [2022-07-21 12:35:37,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:37,869 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1522 transitions. [2022-07-21 12:35:37,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 12:35:37,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1522 transitions. [2022-07-21 12:35:37,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-21 12:35:37,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:37,871 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:35:37,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 12:35:38,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:38,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:38,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:38,092 INFO L85 PathProgramCache]: Analyzing trace with hash -842212532, now seen corresponding path program 2 times [2022-07-21 12:35:38,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:38,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085580934] [2022-07-21 12:35:38,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:35:38,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:38,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:38,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:38,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 12:35:39,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:35:39,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:35:39,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:35:39,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 12:35:39,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:35:39,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:39,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085580934] [2022-07-21 12:35:39,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085580934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:35:39,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:35:39,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:35:39,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295602450] [2022-07-21 12:35:39,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:35:39,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:35:39,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:39,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:35:39,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:39,486 INFO L87 Difference]: Start difference. First operand 1091 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 12:35:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:39,521 INFO L93 Difference]: Finished difference Result 1093 states and 1523 transitions. [2022-07-21 12:35:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:35:39,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 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 76 [2022-07-21 12:35:39,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:39,528 INFO L225 Difference]: With dead ends: 1093 [2022-07-21 12:35:39,528 INFO L226 Difference]: Without dead ends: 1090 [2022-07-21 12:35:39,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:39,530 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 1472 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:39,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1516 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:35:39,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-21 12:35:39,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-21 12:35:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 767 states have (on average 1.3272490221642763) internal successors, (1018), 796 states have internal predecessors, (1018), 253 states have call successors, (253), 70 states have call predecessors, (253), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-21 12:35:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1520 transitions. [2022-07-21 12:35:39,573 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1520 transitions. Word has length 76 [2022-07-21 12:35:39,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:39,573 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1520 transitions. [2022-07-21 12:35:39,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 12:35:39,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1520 transitions. [2022-07-21 12:35:39,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 12:35:39,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:39,575 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:35:39,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 12:35:39,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:39,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash -339131500, now seen corresponding path program 1 times [2022-07-21 12:35:39,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:39,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778126690] [2022-07-21 12:35:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:35:39,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:39,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:39,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:39,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 12:35:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:35:40,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 12:35:40,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 12:35:41,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:35:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 12:35:41,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:41,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778126690] [2022-07-21 12:35:41,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778126690] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:35:41,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:35:41,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-21 12:35:41,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223086993] [2022-07-21 12:35:41,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:35:41,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 12:35:41,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:41,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 12:35:41,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-21 12:35:41,951 INFO L87 Difference]: Start difference. First operand 1090 states and 1520 transitions. Second operand has 13 states, 11 states have (on average 4.0) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 12:35:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:42,370 INFO L93 Difference]: Finished difference Result 2173 states and 3035 transitions. [2022-07-21 12:35:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 12:35:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.0) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 77 [2022-07-21 12:35:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:42,378 INFO L225 Difference]: With dead ends: 2173 [2022-07-21 12:35:42,378 INFO L226 Difference]: Without dead ends: 1091 [2022-07-21 12:35:42,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-21 12:35:42,384 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 365 mSDsluCounter, 9701 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 11216 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:42,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 11216 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:35:42,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-21 12:35:42,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-07-21 12:35:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 768 states have (on average 1.3268229166666667) internal successors, (1019), 797 states have internal predecessors, (1019), 253 states have call successors, (253), 70 states have call predecessors, (253), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-21 12:35:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1521 transitions. [2022-07-21 12:35:42,422 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1521 transitions. Word has length 77 [2022-07-21 12:35:42,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:42,423 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1521 transitions. [2022-07-21 12:35:42,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.0) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 12:35:42,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1521 transitions. [2022-07-21 12:35:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 12:35:42,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:42,425 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:35:42,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 12:35:42,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:42,648 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:42,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:42,648 INFO L85 PathProgramCache]: Analyzing trace with hash 861504067, now seen corresponding path program 2 times [2022-07-21 12:35:42,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:42,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708667671] [2022-07-21 12:35:42,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:35:42,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:42,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:42,650 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:42,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 12:35:43,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:35:43,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:35:43,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:35:43,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-21 12:35:44,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:35:44,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:44,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708667671] [2022-07-21 12:35:44,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708667671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:35:44,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:35:44,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:35:44,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087582928] [2022-07-21 12:35:44,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:35:44,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:35:44,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:44,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:35:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:44,010 INFO L87 Difference]: Start difference. First operand 1091 states and 1521 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 12:35:44,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:44,044 INFO L93 Difference]: Finished difference Result 1093 states and 1522 transitions. [2022-07-21 12:35:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:35:44,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 78 [2022-07-21 12:35:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:44,051 INFO L225 Difference]: With dead ends: 1093 [2022-07-21 12:35:44,052 INFO L226 Difference]: Without dead ends: 1090 [2022-07-21 12:35:44,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:44,053 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:44,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1514 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:35:44,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-21 12:35:44,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-21 12:35:44,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 768 states have (on average 1.3255208333333333) internal successors, (1018), 796 states have internal predecessors, (1018), 252 states have call successors, (252), 70 states have call predecessors, (252), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-21 12:35:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1519 transitions. [2022-07-21 12:35:44,092 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1519 transitions. Word has length 78 [2022-07-21 12:35:44,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:44,092 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1519 transitions. [2022-07-21 12:35:44,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 12:35:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1519 transitions. [2022-07-21 12:35:44,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 12:35:44,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:44,094 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:35:44,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-21 12:35:44,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:44,315 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash 936480384, now seen corresponding path program 1 times [2022-07-21 12:35:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:44,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011616020] [2022-07-21 12:35:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:35:44,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:44,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:44,318 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:44,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 12:35:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:35:45,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:35:45,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-21 12:35:45,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:35:45,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:45,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011616020] [2022-07-21 12:35:45,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011616020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:35:45,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:35:45,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:35:45,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297151086] [2022-07-21 12:35:45,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:35:45,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:35:45,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:45,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:35:45,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:45,342 INFO L87 Difference]: Start difference. First operand 1090 states and 1519 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 12:35:45,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:45,595 INFO L93 Difference]: Finished difference Result 3228 states and 4505 transitions. [2022-07-21 12:35:45,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:35:45,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 79 [2022-07-21 12:35:45,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:45,615 INFO L225 Difference]: With dead ends: 3228 [2022-07-21 12:35:45,615 INFO L226 Difference]: Without dead ends: 2151 [2022-07-21 12:35:45,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:45,623 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 1479 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:45,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 3296 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:35:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2022-07-21 12:35:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2147. [2022-07-21 12:35:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 1512 states have (on average 1.3280423280423281) internal successors, (2008), 1566 states have internal predecessors, (2008), 496 states have call successors, (496), 139 states have call predecessors, (496), 138 states have return successors, (493), 477 states have call predecessors, (493), 493 states have call successors, (493) [2022-07-21 12:35:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 2997 transitions. [2022-07-21 12:35:45,743 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 2997 transitions. Word has length 79 [2022-07-21 12:35:45,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:45,743 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 2997 transitions. [2022-07-21 12:35:45,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 12:35:45,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 2997 transitions. [2022-07-21 12:35:45,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-21 12:35:45,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:45,745 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:35:45,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 12:35:45,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:45,963 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:45,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:45,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1356184505, now seen corresponding path program 1 times [2022-07-21 12:35:45,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:45,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651829484] [2022-07-21 12:35:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:35:45,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:45,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:45,966 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:45,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 12:35:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:35:46,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:35:46,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-21 12:35:47,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:35:47,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:47,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651829484] [2022-07-21 12:35:47,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651829484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:35:47,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:35:47,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:35:47,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593032975] [2022-07-21 12:35:47,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:35:47,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:35:47,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:47,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:35:47,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:47,003 INFO L87 Difference]: Start difference. First operand 2147 states and 2997 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 12:35:47,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:47,341 INFO L93 Difference]: Finished difference Result 6092 states and 8514 transitions. [2022-07-21 12:35:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:35:47,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2022-07-21 12:35:47,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:47,371 INFO L225 Difference]: With dead ends: 6092 [2022-07-21 12:35:47,371 INFO L226 Difference]: Without dead ends: 3968 [2022-07-21 12:35:47,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:47,385 INFO L413 NwaCegarLoop]: 1994 mSDtfsCounter, 1302 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 3461 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:47,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 3461 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:35:47,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-07-21 12:35:47,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3930. [2022-07-21 12:35:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 2772 states have (on average 1.3304473304473305) internal successors, (3688), 2870 states have internal predecessors, (3688), 897 states have call successors, (897), 263 states have call predecessors, (897), 260 states have return successors, (916), 858 states have call predecessors, (916), 894 states have call successors, (916) [2022-07-21 12:35:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 5501 transitions. [2022-07-21 12:35:47,543 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 5501 transitions. Word has length 85 [2022-07-21 12:35:47,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:47,544 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 5501 transitions. [2022-07-21 12:35:47,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 12:35:47,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 5501 transitions. [2022-07-21 12:35:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-21 12:35:47,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:47,548 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:35:47,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 12:35:47,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:47,776 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:47,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:47,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1100131717, now seen corresponding path program 1 times [2022-07-21 12:35:47,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:47,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077412983] [2022-07-21 12:35:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:35:47,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:47,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:47,779 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:47,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 12:35:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:35:48,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1685 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:35:48,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-21 12:35:48,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:35:48,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:48,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077412983] [2022-07-21 12:35:48,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077412983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:35:48,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:35:48,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:35:48,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65986635] [2022-07-21 12:35:48,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:35:48,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:35:48,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:35:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:48,823 INFO L87 Difference]: Start difference. First operand 3930 states and 5501 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 12:35:49,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:49,046 INFO L93 Difference]: Finished difference Result 3946 states and 5515 transitions. [2022-07-21 12:35:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:35:49,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 99 [2022-07-21 12:35:49,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:49,070 INFO L225 Difference]: With dead ends: 3946 [2022-07-21 12:35:49,071 INFO L226 Difference]: Without dead ends: 3938 [2022-07-21 12:35:49,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:49,075 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1510 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:49,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1528 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:35:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2022-07-21 12:35:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3930. [2022-07-21 12:35:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 2772 states have (on average 1.3297258297258296) internal successors, (3686), 2870 states have internal predecessors, (3686), 897 states have call successors, (897), 263 states have call predecessors, (897), 260 states have return successors, (916), 858 states have call predecessors, (916), 894 states have call successors, (916) [2022-07-21 12:35:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 5499 transitions. [2022-07-21 12:35:49,249 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 5499 transitions. Word has length 99 [2022-07-21 12:35:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:49,250 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 5499 transitions. [2022-07-21 12:35:49,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 12:35:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 5499 transitions. [2022-07-21 12:35:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-21 12:35:49,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:49,254 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:35:49,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 12:35:49,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:49,475 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1780190087, now seen corresponding path program 1 times [2022-07-21 12:35:49,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:49,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419082564] [2022-07-21 12:35:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:35:49,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:49,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:49,478 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:49,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 12:35:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:35:50,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:35:50,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-21 12:35:51,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:35:51,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:51,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419082564] [2022-07-21 12:35:51,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419082564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:35:51,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:35:51,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:35:51,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858736311] [2022-07-21 12:35:51,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:35:51,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:35:51,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:51,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:35:51,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:51,020 INFO L87 Difference]: Start difference. First operand 3930 states and 5499 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 12:35:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:51,316 INFO L93 Difference]: Finished difference Result 11724 states and 16423 transitions. [2022-07-21 12:35:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:35:51,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 99 [2022-07-21 12:35:51,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:51,378 INFO L225 Difference]: With dead ends: 11724 [2022-07-21 12:35:51,378 INFO L226 Difference]: Without dead ends: 7809 [2022-07-21 12:35:51,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:51,397 INFO L413 NwaCegarLoop]: 1914 mSDtfsCounter, 1451 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:51,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 3401 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:35:51,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7809 states. [2022-07-21 12:35:51,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7809 to 7803. [2022-07-21 12:35:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7803 states, 5501 states have (on average 1.3304853662970368) internal successors, (7319), 5696 states have internal predecessors, (7319), 1785 states have call successors, (1785), 523 states have call predecessors, (1785), 516 states have return successors, (1826), 1707 states have call predecessors, (1826), 1782 states have call successors, (1826) [2022-07-21 12:35:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7803 states to 7803 states and 10930 transitions. [2022-07-21 12:35:51,711 INFO L78 Accepts]: Start accepts. Automaton has 7803 states and 10930 transitions. Word has length 99 [2022-07-21 12:35:51,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:51,712 INFO L495 AbstractCegarLoop]: Abstraction has 7803 states and 10930 transitions. [2022-07-21 12:35:51,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 12:35:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 7803 states and 10930 transitions. [2022-07-21 12:35:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-21 12:35:51,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:51,723 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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, 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] [2022-07-21 12:35:51,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 12:35:51,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:51,939 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:51,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1638859229, now seen corresponding path program 1 times [2022-07-21 12:35:51,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:51,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146404590] [2022-07-21 12:35:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:35:51,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:51,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:51,943 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:51,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 12:35:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:35:53,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:35:53,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 12:35:53,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:35:53,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:53,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146404590] [2022-07-21 12:35:53,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146404590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:35:53,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:35:53,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:35:53,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430882151] [2022-07-21 12:35:53,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:35:53,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:35:53,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:53,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:35:53,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:53,210 INFO L87 Difference]: Start difference. First operand 7803 states and 10930 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 12:35:53,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:53,871 INFO L93 Difference]: Finished difference Result 21077 states and 29504 transitions. [2022-07-21 12:35:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:35:53,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 188 [2022-07-21 12:35:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:53,948 INFO L225 Difference]: With dead ends: 21077 [2022-07-21 12:35:53,948 INFO L226 Difference]: Without dead ends: 13297 [2022-07-21 12:35:53,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:35:53,987 INFO L413 NwaCegarLoop]: 2185 mSDtfsCounter, 1099 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:53,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 3650 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:35:54,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13297 states. [2022-07-21 12:35:54,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13297 to 13275. [2022-07-21 12:35:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13275 states, 9282 states have (on average 1.3269769446240034) internal successors, (12317), 9639 states have internal predecessors, (12317), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 907 states have return successors, (3170), 2939 states have call predecessors, (3170), 3082 states have call successors, (3170) [2022-07-21 12:35:54,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 18572 transitions. [2022-07-21 12:35:54,594 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 18572 transitions. Word has length 188 [2022-07-21 12:35:54,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:54,595 INFO L495 AbstractCegarLoop]: Abstraction has 13275 states and 18572 transitions. [2022-07-21 12:35:54,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 12:35:54,596 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 18572 transitions. [2022-07-21 12:35:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-21 12:35:54,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:54,613 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-21 12:35:54,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 12:35:54,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:54,828 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:54,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:54,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1778802056, now seen corresponding path program 1 times [2022-07-21 12:35:54,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:54,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452203467] [2022-07-21 12:35:54,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:35:54,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:54,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:54,832 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:35:54,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 12:35:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:35:56,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 12:35:56,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:35:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-21 12:35:56,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:35:56,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:35:56,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452203467] [2022-07-21 12:35:56,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452203467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:35:56,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:35:56,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:35:56,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573912059] [2022-07-21 12:35:56,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:35:56,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 12:35:56,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:35:56,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 12:35:56,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 12:35:56,537 INFO L87 Difference]: Start difference. First operand 13275 states and 18572 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-07-21 12:35:57,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:35:57,390 INFO L93 Difference]: Finished difference Result 30969 states and 44179 transitions. [2022-07-21 12:35:57,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 12:35:57,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 211 [2022-07-21 12:35:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:35:57,495 INFO L225 Difference]: With dead ends: 30969 [2022-07-21 12:35:57,495 INFO L226 Difference]: Without dead ends: 17725 [2022-07-21 12:35:57,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:35:57,549 INFO L413 NwaCegarLoop]: 2030 mSDtfsCounter, 720 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 5520 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:35:57,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 5520 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:35:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17725 states. [2022-07-21 12:35:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17725 to 13291. [2022-07-21 12:35:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13291 states, 9298 states have (on average 1.3264142826414282) internal successors, (12333), 9655 states have internal predecessors, (12333), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 907 states have return successors, (3170), 2939 states have call predecessors, (3170), 3082 states have call successors, (3170) [2022-07-21 12:35:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13291 states to 13291 states and 18588 transitions. [2022-07-21 12:35:58,233 INFO L78 Accepts]: Start accepts. Automaton has 13291 states and 18588 transitions. Word has length 211 [2022-07-21 12:35:58,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:35:58,234 INFO L495 AbstractCegarLoop]: Abstraction has 13291 states and 18588 transitions. [2022-07-21 12:35:58,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-07-21 12:35:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 13291 states and 18588 transitions. [2022-07-21 12:35:58,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-21 12:35:58,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:35:58,254 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-21 12:35:58,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-21 12:35:58,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:35:58,468 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:35:58,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:35:58,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1257617411, now seen corresponding path program 1 times [2022-07-21 12:35:58,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:35:58,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692333106] [2022-07-21 12:35:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:35:58,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:35:58,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:35:58,471 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) [2022-07-21 12:35:58,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 12:36:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:00,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:36:00,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-21 12:36:00,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:36:00,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:00,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692333106] [2022-07-21 12:36:00,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692333106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:36:00,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:36:00,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:36:00,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675314894] [2022-07-21 12:36:00,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:36:00,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:36:00,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:00,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:36:00,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:36:00,458 INFO L87 Difference]: Start difference. First operand 13291 states and 18588 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 12:36:01,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:01,211 INFO L93 Difference]: Finished difference Result 28824 states and 40740 transitions. [2022-07-21 12:36:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 12:36:01,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 234 [2022-07-21 12:36:01,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:01,309 INFO L225 Difference]: With dead ends: 28824 [2022-07-21 12:36:01,309 INFO L226 Difference]: Without dead ends: 15564 [2022-07-21 12:36:01,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:36:01,368 INFO L413 NwaCegarLoop]: 1892 mSDtfsCounter, 264 mSDsluCounter, 5350 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 7242 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:36:01,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 7242 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:36:01,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15564 states. [2022-07-21 12:36:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15564 to 13323. [2022-07-21 12:36:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13323 states, 9322 states have (on average 1.3255739111778588) internal successors, (12357), 9679 states have internal predecessors, (12357), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 915 states have return successors, (3186), 2947 states have call predecessors, (3186), 3082 states have call successors, (3186) [2022-07-21 12:36:02,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13323 states to 13323 states and 18628 transitions. [2022-07-21 12:36:02,037 INFO L78 Accepts]: Start accepts. Automaton has 13323 states and 18628 transitions. Word has length 234 [2022-07-21 12:36:02,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:02,038 INFO L495 AbstractCegarLoop]: Abstraction has 13323 states and 18628 transitions. [2022-07-21 12:36:02,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 12:36:02,038 INFO L276 IsEmpty]: Start isEmpty. Operand 13323 states and 18628 transitions. [2022-07-21 12:36:02,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-21 12:36:02,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:02,056 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-21 12:36:02,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-21 12:36:02,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:02,271 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:02,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -562124410, now seen corresponding path program 1 times [2022-07-21 12:36:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:02,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309841372] [2022-07-21 12:36:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:36:02,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:02,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:02,275 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) [2022-07-21 12:36:02,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 12:36:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:04,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:36:04,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-21 12:36:04,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:36:04,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:04,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309841372] [2022-07-21 12:36:04,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309841372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:36:04,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:36:04,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:36:04,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805047289] [2022-07-21 12:36:04,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:36:04,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:36:04,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:04,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:36:04,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:36:04,309 INFO L87 Difference]: Start difference. First operand 13323 states and 18628 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 12:36:04,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:04,896 INFO L93 Difference]: Finished difference Result 28888 states and 40820 transitions. [2022-07-21 12:36:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 12:36:04,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 241 [2022-07-21 12:36:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:04,973 INFO L225 Difference]: With dead ends: 28888 [2022-07-21 12:36:04,974 INFO L226 Difference]: Without dead ends: 15596 [2022-07-21 12:36:05,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:36:05,023 INFO L413 NwaCegarLoop]: 1888 mSDtfsCounter, 264 mSDsluCounter, 5342 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 7230 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 [2022-07-21 12:36:05,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 7230 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:36:05,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15596 states. [2022-07-21 12:36:05,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15596 to 13355. [2022-07-21 12:36:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13355 states, 9346 states have (on average 1.3247378557671732) internal successors, (12381), 9703 states have internal predecessors, (12381), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2955 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-21 12:36:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13355 states to 13355 states and 18668 transitions. [2022-07-21 12:36:05,608 INFO L78 Accepts]: Start accepts. Automaton has 13355 states and 18668 transitions. Word has length 241 [2022-07-21 12:36:05,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:05,608 INFO L495 AbstractCegarLoop]: Abstraction has 13355 states and 18668 transitions. [2022-07-21 12:36:05,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 12:36:05,609 INFO L276 IsEmpty]: Start isEmpty. Operand 13355 states and 18668 transitions. [2022-07-21 12:36:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-21 12:36:05,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:05,631 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-21 12:36:05,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-21 12:36:05,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:05,848 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:05,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:05,849 INFO L85 PathProgramCache]: Analyzing trace with hash 514428999, now seen corresponding path program 1 times [2022-07-21 12:36:05,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:05,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120411053] [2022-07-21 12:36:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:36:05,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:05,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:05,853 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) [2022-07-21 12:36:05,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-21 12:36:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:07,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:36:07,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-21 12:36:07,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:36:07,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:07,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120411053] [2022-07-21 12:36:07,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120411053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:36:07,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:36:07,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:36:07,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622553238] [2022-07-21 12:36:07,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:36:07,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:36:07,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:36:07,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:36:07,952 INFO L87 Difference]: Start difference. First operand 13355 states and 18668 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 12:36:08,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:08,629 INFO L93 Difference]: Finished difference Result 26751 states and 37469 transitions. [2022-07-21 12:36:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 12:36:08,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 241 [2022-07-21 12:36:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:08,714 INFO L225 Difference]: With dead ends: 26751 [2022-07-21 12:36:08,715 INFO L226 Difference]: Without dead ends: 13427 [2022-07-21 12:36:08,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:36:08,770 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 8 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6034 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:36:08,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6034 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:36:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13427 states. [2022-07-21 12:36:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13427 to 13395. [2022-07-21 12:36:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13395 states, 9386 states have (on average 1.3233539313871723) internal successors, (12421), 9743 states have internal predecessors, (12421), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2955 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-21 12:36:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 18708 transitions. [2022-07-21 12:36:09,378 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 18708 transitions. Word has length 241 [2022-07-21 12:36:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:09,378 INFO L495 AbstractCegarLoop]: Abstraction has 13395 states and 18708 transitions. [2022-07-21 12:36:09,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 12:36:09,379 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 18708 transitions. [2022-07-21 12:36:09,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-21 12:36:09,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:09,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-21 12:36:09,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-21 12:36:09,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:09,616 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:09,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:09,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1176236545, now seen corresponding path program 1 times [2022-07-21 12:36:09,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:09,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227169874] [2022-07-21 12:36:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:36:09,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:09,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:09,619 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) [2022-07-21 12:36:09,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-21 12:36:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:11,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2231 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 12:36:11,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-21 12:36:11,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:36:11,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227169874] [2022-07-21 12:36:11,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227169874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:36:11,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:36:11,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 12:36:11,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073027916] [2022-07-21 12:36:11,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:36:11,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 12:36:11,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:11,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 12:36:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 12:36:11,687 INFO L87 Difference]: Start difference. First operand 13395 states and 18708 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 12:36:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:12,851 INFO L93 Difference]: Finished difference Result 31513 states and 44931 transitions. [2022-07-21 12:36:12,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:36:12,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 241 [2022-07-21 12:36:12,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:12,963 INFO L225 Difference]: With dead ends: 31513 [2022-07-21 12:36:12,963 INFO L226 Difference]: Without dead ends: 18149 [2022-07-21 12:36:13,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 12:36:13,032 INFO L413 NwaCegarLoop]: 2001 mSDtfsCounter, 1396 mSDsluCounter, 9084 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 11085 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:36:13,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 11085 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 12:36:13,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18149 states. [2022-07-21 12:36:13,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18149 to 13427. [2022-07-21 12:36:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 9418 states have (on average 1.322255255892971) internal successors, (12453), 9767 states have internal predecessors, (12453), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2963 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-21 12:36:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 18740 transitions. [2022-07-21 12:36:13,829 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 18740 transitions. Word has length 241 [2022-07-21 12:36:13,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:13,829 INFO L495 AbstractCegarLoop]: Abstraction has 13427 states and 18740 transitions. [2022-07-21 12:36:13,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 12:36:13,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 18740 transitions. [2022-07-21 12:36:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-21 12:36:13,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:13,847 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-21 12:36:13,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-21 12:36:14,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:14,064 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:14,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:14,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1540803124, now seen corresponding path program 1 times [2022-07-21 12:36:14,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:14,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556766178] [2022-07-21 12:36:14,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:36:14,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:14,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:14,069 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) [2022-07-21 12:36:14,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-21 12:36:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:16,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:36:16,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:16,188 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 10 treesize of output 4 [2022-07-21 12:36:16,357 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-07-21 12:36:16,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:36:16,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:16,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556766178] [2022-07-21 12:36:16,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556766178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:36:16,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:36:16,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:36:16,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371245630] [2022-07-21 12:36:16,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:36:16,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:36:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:36:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:36:16,365 INFO L87 Difference]: Start difference. First operand 13427 states and 18740 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 12:36:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:16,943 INFO L93 Difference]: Finished difference Result 26823 states and 37445 transitions. [2022-07-21 12:36:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 12:36:16,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 248 [2022-07-21 12:36:16,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:17,024 INFO L225 Difference]: With dead ends: 26823 [2022-07-21 12:36:17,024 INFO L226 Difference]: Without dead ends: 13427 [2022-07-21 12:36:17,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:36:17,083 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 0 mSDsluCounter, 4361 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5878 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:36:17,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5878 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 189 Unchecked, 0.0s Time] [2022-07-21 12:36:17,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13427 states. [2022-07-21 12:36:17,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13427 to 13427. [2022-07-21 12:36:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 9418 states have (on average 1.3214058186451476) internal successors, (12445), 9767 states have internal predecessors, (12445), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2963 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-21 12:36:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 18732 transitions. [2022-07-21 12:36:17,727 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 18732 transitions. Word has length 248 [2022-07-21 12:36:17,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:17,728 INFO L495 AbstractCegarLoop]: Abstraction has 13427 states and 18732 transitions. [2022-07-21 12:36:17,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 12:36:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 18732 transitions. [2022-07-21 12:36:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-21 12:36:17,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:17,740 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-21 12:36:17,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-07-21 12:36:17,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:17,941 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:17,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:17,942 INFO L85 PathProgramCache]: Analyzing trace with hash 937748831, now seen corresponding path program 1 times [2022-07-21 12:36:17,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:17,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22442229] [2022-07-21 12:36:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:36:17,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:17,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:17,945 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) [2022-07-21 12:36:17,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-21 12:36:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:20,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 12:36:20,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-21 12:36:20,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:36:20,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:20,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22442229] [2022-07-21 12:36:20,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22442229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:36:20,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:36:20,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:36:20,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129641713] [2022-07-21 12:36:20,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:36:20,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:36:20,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:20,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:36:20,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:36:20,231 INFO L87 Difference]: Start difference. First operand 13427 states and 18732 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 12:36:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:21,397 INFO L93 Difference]: Finished difference Result 29836 states and 42204 transitions. [2022-07-21 12:36:21,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 12:36:21,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 253 [2022-07-21 12:36:21,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:21,482 INFO L225 Difference]: With dead ends: 29836 [2022-07-21 12:36:21,482 INFO L226 Difference]: Without dead ends: 16440 [2022-07-21 12:36:21,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 12:36:21,532 INFO L413 NwaCegarLoop]: 1971 mSDtfsCounter, 705 mSDsluCounter, 7087 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 9058 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:36:21,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 9058 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:36:21,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16440 states. [2022-07-21 12:36:22,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16440 to 13467. [2022-07-21 12:36:22,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13467 states, 9450 states have (on average 1.3203174603174603) internal successors, (12477), 9799 states have internal predecessors, (12477), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 931 states have return successors, (3250), 2971 states have call predecessors, (3250), 3082 states have call successors, (3250) [2022-07-21 12:36:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13467 states to 13467 states and 18812 transitions. [2022-07-21 12:36:22,107 INFO L78 Accepts]: Start accepts. Automaton has 13467 states and 18812 transitions. Word has length 253 [2022-07-21 12:36:22,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:22,108 INFO L495 AbstractCegarLoop]: Abstraction has 13467 states and 18812 transitions. [2022-07-21 12:36:22,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 12:36:22,108 INFO L276 IsEmpty]: Start isEmpty. Operand 13467 states and 18812 transitions. [2022-07-21 12:36:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-21 12:36:22,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:22,120 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-21 12:36:22,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-21 12:36:22,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:22,321 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:22,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:22,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1571433039, now seen corresponding path program 1 times [2022-07-21 12:36:22,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:22,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149710960] [2022-07-21 12:36:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:36:22,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:22,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:22,326 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) [2022-07-21 12:36:22,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-21 12:36:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:24,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 12:36:24,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-21 12:36:24,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:36:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-21 12:36:26,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:26,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149710960] [2022-07-21 12:36:26,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149710960] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:36:26,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:36:26,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2022-07-21 12:36:26,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314579908] [2022-07-21 12:36:26,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:36:26,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 12:36:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 12:36:26,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-21 12:36:26,155 INFO L87 Difference]: Start difference. First operand 13467 states and 18812 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 10 states have internal predecessors, (161), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-21 12:36:29,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:30,471 INFO L93 Difference]: Finished difference Result 29190 states and 41214 transitions. [2022-07-21 12:36:30,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 12:36:30,474 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 10 states have internal predecessors, (161), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) Word has length 259 [2022-07-21 12:36:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:30,538 INFO L225 Difference]: With dead ends: 29190 [2022-07-21 12:36:30,538 INFO L226 Difference]: Without dead ends: 15754 [2022-07-21 12:36:30,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 501 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-07-21 12:36:30,578 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 306 mSDsluCounter, 16855 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 18570 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:36:30,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 18570 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 195 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-07-21 12:36:30,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15754 states. [2022-07-21 12:36:31,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15754 to 13499. [2022-07-21 12:36:31,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13499 states, 9474 states have (on average 1.3186616001688833) internal successors, (12493), 9823 states have internal predecessors, (12493), 3093 states have call successors, (3093), 920 states have call predecessors, (3093), 931 states have return successors, (3258), 2975 states have call predecessors, (3258), 3090 states have call successors, (3258) [2022-07-21 12:36:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13499 states to 13499 states and 18844 transitions. [2022-07-21 12:36:31,232 INFO L78 Accepts]: Start accepts. Automaton has 13499 states and 18844 transitions. Word has length 259 [2022-07-21 12:36:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:31,232 INFO L495 AbstractCegarLoop]: Abstraction has 13499 states and 18844 transitions. [2022-07-21 12:36:31,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 10 states have internal predecessors, (161), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-21 12:36:31,233 INFO L276 IsEmpty]: Start isEmpty. Operand 13499 states and 18844 transitions. [2022-07-21 12:36:31,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-07-21 12:36:31,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:31,245 INFO L195 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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] [2022-07-21 12:36:31,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-07-21 12:36:31,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:31,446 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:31,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:31,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1159378091, now seen corresponding path program 1 times [2022-07-21 12:36:31,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:31,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053582378] [2022-07-21 12:36:31,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:36:31,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:31,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:31,450 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) [2022-07-21 12:36:31,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-21 12:36:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:34,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 12:36:34,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-21 12:36:34,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:36:34,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:34,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053582378] [2022-07-21 12:36:34,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053582378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:36:34,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:36:34,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 12:36:34,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849509894] [2022-07-21 12:36:34,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:36:34,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 12:36:34,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:34,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 12:36:34,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:36:34,948 INFO L87 Difference]: Start difference. First operand 13499 states and 18844 transitions. Second operand has 8 states, 8 states have (on average 24.5) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-21 12:36:37,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:36:38,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:38,825 INFO L93 Difference]: Finished difference Result 31509 states and 44935 transitions. [2022-07-21 12:36:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 12:36:38,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.5) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 388 [2022-07-21 12:36:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:38,902 INFO L225 Difference]: With dead ends: 31509 [2022-07-21 12:36:38,902 INFO L226 Difference]: Without dead ends: 18041 [2022-07-21 12:36:38,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-21 12:36:38,944 INFO L413 NwaCegarLoop]: 2321 mSDtfsCounter, 1275 mSDsluCounter, 12024 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 274 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 14345 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:36:38,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 14345 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 55 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 12:36:38,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18041 states. [2022-07-21 12:36:39,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18041 to 13219. [2022-07-21 12:36:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 9282 states have (on average 1.3200818789054083) internal successors, (12253), 9623 states have internal predecessors, (12253), 3025 states have call successors, (3025), 900 states have call predecessors, (3025), 911 states have return successors, (3186), 2907 states have call predecessors, (3186), 3022 states have call successors, (3186) [2022-07-21 12:36:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 18464 transitions. [2022-07-21 12:36:39,741 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 18464 transitions. Word has length 388 [2022-07-21 12:36:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:39,742 INFO L495 AbstractCegarLoop]: Abstraction has 13219 states and 18464 transitions. [2022-07-21 12:36:39,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.5) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-21 12:36:39,742 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 18464 transitions. [2022-07-21 12:36:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-07-21 12:36:39,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:39,757 INFO L195 NwaCegarLoop]: trace histogram [16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-21 12:36:39,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-21 12:36:39,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:39,971 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash 643551835, now seen corresponding path program 1 times [2022-07-21 12:36:39,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:39,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785766665] [2022-07-21 12:36:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:36:39,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:39,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:39,976 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) [2022-07-21 12:36:39,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-21 12:36:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:43,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 3312 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 12:36:43,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 171 proven. 10 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-21 12:36:43,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:36:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 42 proven. 84 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-07-21 12:36:44,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:44,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785766665] [2022-07-21 12:36:44,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785766665] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:36:44,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:36:44,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-21 12:36:44,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059304502] [2022-07-21 12:36:44,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:36:44,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 12:36:44,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:44,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 12:36:44,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-21 12:36:44,146 INFO L87 Difference]: Start difference. First operand 13219 states and 18464 transitions. Second operand has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-21 12:36:46,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:46,081 INFO L93 Difference]: Finished difference Result 26497 states and 37041 transitions. [2022-07-21 12:36:46,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 12:36:46,082 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 389 [2022-07-21 12:36:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:46,149 INFO L225 Difference]: With dead ends: 26497 [2022-07-21 12:36:46,155 INFO L226 Difference]: Without dead ends: 13293 [2022-07-21 12:36:46,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=197, Invalid=355, Unknown=0, NotChecked=0, Total=552 [2022-07-21 12:36:46,207 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 30 mSDsluCounter, 7549 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 9061 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:36:46,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 9061 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 12:36:46,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13293 states. [2022-07-21 12:36:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13293 to 13283. [2022-07-21 12:36:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13283 states, 9342 states have (on average 1.320595161635624) internal successors, (12337), 9683 states have internal predecessors, (12337), 3025 states have call successors, (3025), 904 states have call predecessors, (3025), 915 states have return successors, (3186), 2907 states have call predecessors, (3186), 3022 states have call successors, (3186) [2022-07-21 12:36:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13283 states to 13283 states and 18548 transitions. [2022-07-21 12:36:46,793 INFO L78 Accepts]: Start accepts. Automaton has 13283 states and 18548 transitions. Word has length 389 [2022-07-21 12:36:46,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:46,794 INFO L495 AbstractCegarLoop]: Abstraction has 13283 states and 18548 transitions. [2022-07-21 12:36:46,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-21 12:36:46,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13283 states and 18548 transitions. [2022-07-21 12:36:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-07-21 12:36:46,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:46,806 INFO L195 NwaCegarLoop]: trace histogram [34, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-21 12:36:46,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-21 12:36:47,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:47,007 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:47,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:47,007 INFO L85 PathProgramCache]: Analyzing trace with hash -676411589, now seen corresponding path program 2 times [2022-07-21 12:36:47,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:47,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827180070] [2022-07-21 12:36:47,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:36:47,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:47,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:47,011 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) [2022-07-21 12:36:47,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-21 12:36:48,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:36:48,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:36:48,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 12:36:48,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:36:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-07-21 12:36:48,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:36:48,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:36:48,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827180070] [2022-07-21 12:36:48,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827180070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:36:48,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:36:48,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 12:36:48,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968298568] [2022-07-21 12:36:48,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:36:48,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 12:36:48,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:36:48,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 12:36:48,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 12:36:48,876 INFO L87 Difference]: Start difference. First operand 13283 states and 18548 transitions. Second operand has 10 states, 10 states have (on average 17.8) internal successors, (178), 8 states have internal predecessors, (178), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 12:36:54,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:36:54,441 INFO L93 Difference]: Finished difference Result 42136 states and 59309 transitions. [2022-07-21 12:36:54,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 12:36:54,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 8 states have internal predecessors, (178), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) Word has length 407 [2022-07-21 12:36:54,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:36:54,595 INFO L225 Difference]: With dead ends: 42136 [2022-07-21 12:36:54,596 INFO L226 Difference]: Without dead ends: 28884 [2022-07-21 12:36:54,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-07-21 12:36:54,666 INFO L413 NwaCegarLoop]: 2751 mSDtfsCounter, 2310 mSDsluCounter, 20515 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 23266 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:36:54,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 23266 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-21 12:36:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28884 states. [2022-07-21 12:36:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28884 to 26475. [2022-07-21 12:36:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26475 states, 18594 states have (on average 1.3216629020114015) internal successors, (24575), 19295 states have internal predecessors, (24575), 6049 states have call successors, (6049), 1800 states have call predecessors, (6049), 1831 states have return successors, (6390), 5799 states have call predecessors, (6390), 6046 states have call successors, (6390) [2022-07-21 12:36:55,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26475 states to 26475 states and 37014 transitions. [2022-07-21 12:36:55,874 INFO L78 Accepts]: Start accepts. Automaton has 26475 states and 37014 transitions. Word has length 407 [2022-07-21 12:36:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:36:55,874 INFO L495 AbstractCegarLoop]: Abstraction has 26475 states and 37014 transitions. [2022-07-21 12:36:55,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 8 states have internal predecessors, (178), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 12:36:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 26475 states and 37014 transitions. [2022-07-21 12:36:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-07-21 12:36:55,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:36:55,904 INFO L195 NwaCegarLoop]: trace histogram [34, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-21 12:36:55,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-21 12:36:56,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:36:56,120 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:36:56,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:36:56,120 INFO L85 PathProgramCache]: Analyzing trace with hash 217074749, now seen corresponding path program 1 times [2022-07-21 12:36:56,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:36:56,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469422701] [2022-07-21 12:36:56,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:36:56,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:36:56,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:36:56,124 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) [2022-07-21 12:36:56,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-21 12:36:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:36:59,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 3508 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 12:36:59,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 453 proven. 55 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-07-21 12:37:00,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:37:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 72 proven. 321 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2022-07-21 12:37:02,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:37:02,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469422701] [2022-07-21 12:37:02,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469422701] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:37:02,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:37:02,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-21 12:37:02,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479353865] [2022-07-21 12:37:02,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:37:02,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 12:37:02,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:37:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 12:37:02,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-21 12:37:02,362 INFO L87 Difference]: Start difference. First operand 26475 states and 37014 transitions. Second operand has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-21 12:37:10,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:37:10,545 INFO L93 Difference]: Finished difference Result 53369 states and 74677 transitions. [2022-07-21 12:37:10,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-21 12:37:10,546 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 407 [2022-07-21 12:37:10,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:37:10,700 INFO L225 Difference]: With dead ends: 53369 [2022-07-21 12:37:10,700 INFO L226 Difference]: Without dead ends: 26701 [2022-07-21 12:37:10,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-07-21 12:37:10,796 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 148 mSDsluCounter, 16662 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 18180 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:37:10,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 18180 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 12:37:10,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26701 states. [2022-07-21 12:37:11,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26701 to 26667. [2022-07-21 12:37:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26667 states, 18786 states have (on average 1.3162461407431065) internal successors, (24727), 19487 states have internal predecessors, (24727), 6049 states have call successors, (6049), 1800 states have call predecessors, (6049), 1831 states have return successors, (6390), 5799 states have call predecessors, (6390), 6046 states have call successors, (6390) [2022-07-21 12:37:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26667 states to 26667 states and 37166 transitions. [2022-07-21 12:37:12,109 INFO L78 Accepts]: Start accepts. Automaton has 26667 states and 37166 transitions. Word has length 407 [2022-07-21 12:37:12,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:37:12,110 INFO L495 AbstractCegarLoop]: Abstraction has 26667 states and 37166 transitions. [2022-07-21 12:37:12,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-21 12:37:12,110 INFO L276 IsEmpty]: Start isEmpty. Operand 26667 states and 37166 transitions. [2022-07-21 12:37:12,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-07-21 12:37:12,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:37:12,142 INFO L195 NwaCegarLoop]: trace histogram [70, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-21 12:37:12,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-21 12:37:12,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:37:12,361 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:37:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:37:12,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1470402045, now seen corresponding path program 2 times [2022-07-21 12:37:12,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:37:12,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241454924] [2022-07-21 12:37:12,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:37:12,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:37:12,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:37:12,366 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) [2022-07-21 12:37:12,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-21 12:37:56,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 12:37:56,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:37:56,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 3904 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-21 12:37:56,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 1449 proven. 253 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2022-07-21 12:37:58,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:38:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 132 proven. 1335 refuted. 0 times theorem prover too weak. 1503 trivial. 0 not checked. [2022-07-21 12:38:05,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:05,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241454924] [2022-07-21 12:38:05,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241454924] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:38:05,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:38:05,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-21 12:38:05,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585986273] [2022-07-21 12:38:05,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:38:05,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-21 12:38:05,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:05,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-21 12:38:05,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-07-21 12:38:05,815 INFO L87 Difference]: Start difference. First operand 26667 states and 37166 transitions. Second operand has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-21 12:38:44,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:44,939 INFO L93 Difference]: Finished difference Result 54185 states and 75629 transitions. [2022-07-21 12:38:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-07-21 12:38:44,941 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 443 [2022-07-21 12:38:44,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:45,088 INFO L225 Difference]: With dead ends: 54185 [2022-07-21 12:38:45,089 INFO L226 Difference]: Without dead ends: 27133 [2022-07-21 12:38:45,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=3869, Invalid=9013, Unknown=0, NotChecked=0, Total=12882 [2022-07-21 12:38:45,196 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 626 mSDsluCounter, 41136 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 42666 SdHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:45,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 42666 Invalid, 2873 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [352 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-07-21 12:38:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27133 states. [2022-07-21 12:38:46,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27133 to 27051. [2022-07-21 12:38:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27051 states, 19170 states have (on average 1.3099113197704746) internal successors, (25111), 19871 states have internal predecessors, (25111), 6049 states have call successors, (6049), 1800 states have call predecessors, (6049), 1831 states have return successors, (6390), 5799 states have call predecessors, (6390), 6046 states have call successors, (6390) [2022-07-21 12:38:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27051 states to 27051 states and 37550 transitions. [2022-07-21 12:38:46,513 INFO L78 Accepts]: Start accepts. Automaton has 27051 states and 37550 transitions. Word has length 443 [2022-07-21 12:38:46,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:46,514 INFO L495 AbstractCegarLoop]: Abstraction has 27051 states and 37550 transitions. [2022-07-21 12:38:46,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-21 12:38:46,514 INFO L276 IsEmpty]: Start isEmpty. Operand 27051 states and 37550 transitions. [2022-07-21 12:38:46,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-07-21 12:38:46,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:46,537 INFO L195 NwaCegarLoop]: trace histogram [142, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-21 12:38:46,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-21 12:38:46,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:46,738 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:46,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash -970034819, now seen corresponding path program 3 times [2022-07-21 12:38:46,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:46,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570225614] [2022-07-21 12:38:46,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 12:38:46,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:46,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:46,743 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:38:46,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process