./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--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-43_2a-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 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 13:12:10,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 13:12:10,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 13:12:10,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 13:12:10,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 13:12:10,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 13:12:10,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 13:12:10,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 13:12:10,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 13:12:10,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 13:12:10,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 13:12:10,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 13:12:10,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 13:12:10,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 13:12:10,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 13:12:10,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 13:12:10,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 13:12:10,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 13:12:10,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 13:12:10,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 13:12:10,680 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 13:12:10,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 13:12:10,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 13:12:10,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 13:12:10,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 13:12:10,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 13:12:10,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 13:12:10,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 13:12:10,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 13:12:10,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 13:12:10,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 13:12:10,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 13:12:10,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 13:12:10,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 13:12:10,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 13:12:10,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 13:12:10,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 13:12:10,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 13:12:10,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 13:12:10,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 13:12:10,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 13:12:10,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 13:12:10,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 13:12:10,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 13:12:10,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 13:12:10,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 13:12:10,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 13:12:10,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 13:12:10,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 13:12:10,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 13:12:10,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 13:12:10,730 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 13:12:10,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 13:12:10,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 13:12:10,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 13:12:10,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 13:12:10,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 13:12:10,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 13:12:10,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 13:12:10,736 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 13:12:10,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 13:12:10,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 13:12:10,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 13:12:10,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 13:12:10,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:12:10,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 13:12:10,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 13:12:10,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 13:12:10,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 13:12:10,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 13:12:10,738 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 13:12:10,738 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 13:12:10,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 13:12:10,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2022-07-21 13:12:10,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 13:12:11,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 13:12:11,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 13:12:11,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 13:12:11,014 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 13:12:11,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-21 13:12:11,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8293b67f/ab71179fc7774e69bafee25419645294/FLAGa6f31b9d6 [2022-07-21 13:12:11,688 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 13:12:11,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-21 13:12:11,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8293b67f/ab71179fc7774e69bafee25419645294/FLAGa6f31b9d6 [2022-07-21 13:12:12,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8293b67f/ab71179fc7774e69bafee25419645294 [2022-07-21 13:12:12,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 13:12:12,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 13:12:12,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 13:12:12,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 13:12:12,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 13:12:12,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:12:12" (1/1) ... [2022-07-21 13:12:12,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cce904f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:12, skipping insertion in model container [2022-07-21 13:12:12,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:12:12" (1/1) ... [2022-07-21 13:12:12,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 13:12:12,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:12:13,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-07-21 13:12:13,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:12:13,416 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 13:12:13,538 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 13:12:13,543 INFO L158 Benchmark]: Toolchain (without parser) took 1456.17ms. Allocated memory was 52.4MB in the beginning and 94.4MB in the end (delta: 41.9MB). Free memory was 30.7MB in the beginning and 45.0MB in the end (delta: -14.3MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2022-07-21 13:12:13,544 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory was 34.4MB in the beginning and 34.3MB in the end (delta: 33.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 13:12:13,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1451.32ms. Allocated memory was 52.4MB in the beginning and 94.4MB in the end (delta: 41.9MB). Free memory was 30.5MB in the beginning and 45.0MB in the end (delta: -14.4MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2022-07-21 13:12:13,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory was 34.4MB in the beginning and 34.3MB in the end (delta: 33.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1451.32ms. Allocated memory was 52.4MB in the beginning and 94.4MB in the end (delta: 41.9MB). Free memory was 30.5MB in the beginning and 45.0MB in the end (delta: -14.4MB). Peak memory consumption was 41.2MB. 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-43_2a-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 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 13:12:14,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 13:12:14,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 13:12:14,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 13:12:14,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 13:12:14,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 13:12:14,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 13:12:14,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 13:12:14,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 13:12:14,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 13:12:14,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 13:12:14,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 13:12:14,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 13:12:14,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 13:12:14,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 13:12:14,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 13:12:14,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 13:12:14,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 13:12:14,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 13:12:14,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 13:12:14,995 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 13:12:14,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 13:12:14,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 13:12:14,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 13:12:14,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 13:12:15,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 13:12:15,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 13:12:15,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 13:12:15,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 13:12:15,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 13:12:15,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 13:12:15,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 13:12:15,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 13:12:15,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 13:12:15,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 13:12:15,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 13:12:15,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 13:12:15,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 13:12:15,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 13:12:15,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 13:12:15,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 13:12:15,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 13:12:15,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 13:12:15,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 13:12:15,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 13:12:15,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 13:12:15,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 13:12:15,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 13:12:15,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 13:12:15,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 13:12:15,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 13:12:15,044 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 13:12:15,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 13:12:15,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 13:12:15,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 13:12:15,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 13:12:15,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 13:12:15,046 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 13:12:15,046 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 13:12:15,046 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 13:12:15,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 13:12:15,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 13:12:15,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 13:12:15,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 13:12:15,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 13:12:15,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 13:12:15,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:12:15,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 13:12:15,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 13:12:15,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 13:12:15,048 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 13:12:15,048 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 13:12:15,048 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 13:12:15,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 13:12:15,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 13:12:15,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 13:12:15,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2022-07-21 13:12:15,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 13:12:15,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 13:12:15,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 13:12:15,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 13:12:15,354 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 13:12:15,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-21 13:12:15,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27fe9ca90/6a30c2836d2b47e6898fd9d9b2d9b540/FLAG37a7d500a [2022-07-21 13:12:15,906 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 13:12:15,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-21 13:12:15,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27fe9ca90/6a30c2836d2b47e6898fd9d9b2d9b540/FLAG37a7d500a [2022-07-21 13:12:16,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27fe9ca90/6a30c2836d2b47e6898fd9d9b2d9b540 [2022-07-21 13:12:16,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 13:12:16,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 13:12:16,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 13:12:16,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 13:12:16,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 13:12:16,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:12:16" (1/1) ... [2022-07-21 13:12:16,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3e90a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:16, skipping insertion in model container [2022-07-21 13:12:16,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:12:16" (1/1) ... [2022-07-21 13:12:16,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 13:12:16,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:12:17,229 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-07-21 13:12:17,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:12:17,300 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 13:12:17,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:12:17,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-07-21 13:12:17,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:12:17,524 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 13:12:17,703 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-07-21 13:12:17,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:12:17,768 INFO L208 MainTranslator]: Completed translation [2022-07-21 13:12:17,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:17 WrapperNode [2022-07-21 13:12:17,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 13:12:17,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 13:12:17,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 13:12:17,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 13:12:17,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:17" (1/1) ... [2022-07-21 13:12:17,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:17" (1/1) ... [2022-07-21 13:12:17,960 INFO L137 Inliner]: procedures = 220, calls = 1417, calls flagged for inlining = 89, calls inlined = 83, statements flattened = 3216 [2022-07-21 13:12:17,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 13:12:17,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 13:12:17,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 13:12:17,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 13:12:17,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:17" (1/1) ... [2022-07-21 13:12:17,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:17" (1/1) ... [2022-07-21 13:12:17,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:17" (1/1) ... [2022-07-21 13:12:17,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:17" (1/1) ... [2022-07-21 13:12:18,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:17" (1/1) ... [2022-07-21 13:12:18,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:17" (1/1) ... [2022-07-21 13:12:18,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:17" (1/1) ... [2022-07-21 13:12:18,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 13:12:18,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 13:12:18,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 13:12:18,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 13:12:18,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:17" (1/1) ... [2022-07-21 13:12:18,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:12:18,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 13:12:18,141 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 13:12:18,146 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 13:12:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 13:12:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-21 13:12:18,168 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-21 13:12:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 13:12:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2022-07-21 13:12:18,168 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2022-07-21 13:12:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 13:12:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 13:12:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 13:12:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 13:12:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 13:12:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 13:12:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 13:12:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 13:12:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-07-21 13:12:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-07-21 13:12:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2022-07-21 13:12:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2022-07-21 13:12:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-21 13:12:18,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-21 13:12:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 13:12:18,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 13:12:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-07-21 13:12:18,170 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-07-21 13:12:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-21 13:12:18,170 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-21 13:12:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 13:12:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 13:12:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2022-07-21 13:12:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2022-07-21 13:12:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-07-21 13:12:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-07-21 13:12:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 13:12:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 13:12:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 13:12:18,172 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 13:12:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2022-07-21 13:12:18,172 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2022-07-21 13:12:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 13:12:18,172 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 13:12:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2022-07-21 13:12:18,173 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2022-07-21 13:12:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 13:12:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-21 13:12:18,173 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-21 13:12:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-07-21 13:12:18,173 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-07-21 13:12:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2022-07-21 13:12:18,174 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2022-07-21 13:12:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 13:12:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-07-21 13:12:18,175 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-07-21 13:12:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-07-21 13:12:18,175 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-07-21 13:12:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 13:12:18,175 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 13:12:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2022-07-21 13:12:18,176 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2022-07-21 13:12:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-21 13:12:18,176 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-21 13:12:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2022-07-21 13:12:18,176 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2022-07-21 13:12:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 13:12:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 13:12:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 13:12:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 13:12:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 13:12:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 13:12:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-21 13:12:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 13:12:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 13:12:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 13:12:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2022-07-21 13:12:18,177 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2022-07-21 13:12:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2022-07-21 13:12:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2022-07-21 13:12:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-21 13:12:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-21 13:12:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-07-21 13:12:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-07-21 13:12:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-21 13:12:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-21 13:12:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2022-07-21 13:12:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2022-07-21 13:12:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-21 13:12:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-21 13:12:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-21 13:12:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-21 13:12:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2022-07-21 13:12:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2022-07-21 13:12:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 13:12:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 13:12:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2022-07-21 13:12:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2022-07-21 13:12:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2022-07-21 13:12:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2022-07-21 13:12:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2022-07-21 13:12:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2022-07-21 13:12:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 13:12:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 13:12:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-21 13:12:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-21 13:12:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-21 13:12:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-21 13:12:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-21 13:12:18,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-21 13:12:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2022-07-21 13:12:18,185 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2022-07-21 13:12:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-07-21 13:12:18,185 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-07-21 13:12:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-07-21 13:12:18,185 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-07-21 13:12:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2022-07-21 13:12:18,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2022-07-21 13:12:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2022-07-21 13:12:18,186 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2022-07-21 13:12:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 13:12:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 13:12:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 13:12:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 13:12:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 13:12:18,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 13:12:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-21 13:12:18,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-21 13:12:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2022-07-21 13:12:18,187 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2022-07-21 13:12:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 13:12:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 13:12:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 13:12:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 13:12:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 13:12:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 13:12:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 13:12:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 13:12:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-07-21 13:12:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-07-21 13:12:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2022-07-21 13:12:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2022-07-21 13:12:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-21 13:12:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-21 13:12:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2022-07-21 13:12:18,189 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2022-07-21 13:12:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2022-07-21 13:12:18,189 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2022-07-21 13:12:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-07-21 13:12:18,189 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-07-21 13:12:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2022-07-21 13:12:18,189 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2022-07-21 13:12:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-21 13:12:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-21 13:12:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-07-21 13:12:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-07-21 13:12:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2022-07-21 13:12:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2022-07-21 13:12:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2022-07-21 13:12:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2022-07-21 13:12:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2022-07-21 13:12:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2022-07-21 13:12:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 13:12:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2022-07-21 13:12:18,191 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2022-07-21 13:12:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-21 13:12:18,191 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-21 13:12:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 13:12:18,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 13:12:18,649 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 13:12:18,651 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 13:12:19,183 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 13:12:31,016 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 13:12:31,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 13:12:31,029 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 13:12:31,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:12:31 BoogieIcfgContainer [2022-07-21 13:12:31,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 13:12:31,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 13:12:31,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 13:12:31,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 13:12:31,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:12:16" (1/3) ... [2022-07-21 13:12:31,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa6520f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:12:31, skipping insertion in model container [2022-07-21 13:12:31,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:17" (2/3) ... [2022-07-21 13:12:31,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa6520f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:12:31, skipping insertion in model container [2022-07-21 13:12:31,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:12:31" (3/3) ... [2022-07-21 13:12:31,036 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-21 13:12:31,046 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 13:12:31,051 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 13:12:31,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 13:12:31,134 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@151c4b5a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@661c492e [2022-07-21 13:12:31,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 13:12:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 1052 states, 741 states have (on average 1.3454790823211875) internal successors, (997), 774 states have internal predecessors, (997), 243 states have call successors, (243), 67 states have call predecessors, (243), 66 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2022-07-21 13:12:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 13:12:31,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:31,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:12:31,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:31,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:31,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1866951613, now seen corresponding path program 1 times [2022-07-21 13:12:31,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:31,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942496692] [2022-07-21 13:12:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:12:31,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:31,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:31,187 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 13:12:31,204 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 13:12:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:12:32,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 13:12:32,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:32,295 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 13:12:32,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:12:32,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:32,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942496692] [2022-07-21 13:12:32,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942496692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:12:32,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:12:32,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:12:32,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063431872] [2022-07-21 13:12:32,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:12:32,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:12:32,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:32,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:12:32,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:12:32,331 INFO L87 Difference]: Start difference. First operand has 1052 states, 741 states have (on average 1.3454790823211875) internal successors, (997), 774 states have internal predecessors, (997), 243 states have call successors, (243), 67 states have call predecessors, (243), 66 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 13:12:32,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:32,614 INFO L93 Difference]: Finished difference Result 2102 states and 3025 transitions. [2022-07-21 13:12:32,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:12:32,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 98 [2022-07-21 13:12:32,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:32,639 INFO L225 Difference]: With dead ends: 2102 [2022-07-21 13:12:32,639 INFO L226 Difference]: Without dead ends: 1037 [2022-07-21 13:12:32,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 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 13:12:32,650 INFO L413 NwaCegarLoop]: 1472 mSDtfsCounter, 346 mSDsluCounter, 3991 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 5463 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 13:12:32,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 5463 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:12:32,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-07-21 13:12:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1037. [2022-07-21 13:12:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 733 states have (on average 1.3369713506139154) internal successors, (980), 759 states have internal predecessors, (980), 238 states have call successors, (238), 66 states have call predecessors, (238), 65 states have return successors, (237), 229 states have call predecessors, (237), 237 states have call successors, (237) [2022-07-21 13:12:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1455 transitions. [2022-07-21 13:12:32,729 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1455 transitions. Word has length 98 [2022-07-21 13:12:32,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:12:32,732 INFO L495 AbstractCegarLoop]: Abstraction has 1037 states and 1455 transitions. [2022-07-21 13:12:32,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 13:12:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1455 transitions. [2022-07-21 13:12:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-21 13:12:32,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:32,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:12:32,776 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 13:12:32,951 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 13:12:32,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:32,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:32,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2076110020, now seen corresponding path program 1 times [2022-07-21 13:12:32,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:32,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130431042] [2022-07-21 13:12:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:12:32,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:32,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:32,956 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 13:12:32,958 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 13:12:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:12:33,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 13:12:33,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 13:12:34,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:12:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 13:12:34,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:34,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130431042] [2022-07-21 13:12:34,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130431042] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 13:12:34,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 13:12:34,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-07-21 13:12:34,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309998699] [2022-07-21 13:12:34,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 13:12:34,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 13:12:34,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:34,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 13:12:34,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 13:12:34,324 INFO L87 Difference]: Start difference. First operand 1037 states and 1455 transitions. Second operand has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 9 states have internal predecessors, (57), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 13:12:34,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:34,692 INFO L93 Difference]: Finished difference Result 2067 states and 2905 transitions. [2022-07-21 13:12:34,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:12:34,692 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 9 states have internal predecessors, (57), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) Word has length 99 [2022-07-21 13:12:34,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:34,698 INFO L225 Difference]: With dead ends: 2067 [2022-07-21 13:12:34,698 INFO L226 Difference]: Without dead ends: 1038 [2022-07-21 13:12:34,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:12:34,702 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 663 mSDsluCounter, 8291 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 9743 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:12:34,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 9743 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:12:34,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-07-21 13:12:34,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2022-07-21 13:12:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 734 states have (on average 1.3365122615803815) internal successors, (981), 760 states have internal predecessors, (981), 238 states have call successors, (238), 66 states have call predecessors, (238), 65 states have return successors, (237), 229 states have call predecessors, (237), 237 states have call successors, (237) [2022-07-21 13:12:34,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1456 transitions. [2022-07-21 13:12:34,732 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1456 transitions. Word has length 99 [2022-07-21 13:12:34,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:12:34,734 INFO L495 AbstractCegarLoop]: Abstraction has 1038 states and 1456 transitions. [2022-07-21 13:12:34,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 9 states have internal predecessors, (57), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 13:12:34,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1456 transitions. [2022-07-21 13:12:34,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 13:12:34,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:34,737 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:12:34,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-21 13:12:34,951 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 13:12:34,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:34,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1535666967, now seen corresponding path program 1 times [2022-07-21 13:12:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:34,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277680259] [2022-07-21 13:12:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:12:34,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:34,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:34,955 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 13:12:34,957 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 13:12:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:12:35,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 13:12:35,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 13:12:36,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:12:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 13:12:36,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:36,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277680259] [2022-07-21 13:12:36,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277680259] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 13:12:36,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 13:12:36,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-21 13:12:36,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879661633] [2022-07-21 13:12:36,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 13:12:36,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 13:12:36,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 13:12:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-21 13:12:36,560 INFO L87 Difference]: Start difference. First operand 1038 states and 1456 transitions. Second operand has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 13:12:36,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:36,788 INFO L93 Difference]: Finished difference Result 2069 states and 2907 transitions. [2022-07-21 13:12:36,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 13:12:36,789 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) Word has length 101 [2022-07-21 13:12:36,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:36,794 INFO L225 Difference]: With dead ends: 2069 [2022-07-21 13:12:36,794 INFO L226 Difference]: Without dead ends: 1039 [2022-07-21 13:12:36,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-21 13:12:36,798 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 336 mSDsluCounter, 7888 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 9340 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:12:36,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 9340 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:12:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2022-07-21 13:12:36,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2022-07-21 13:12:36,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 735 states have (on average 1.3360544217687076) internal successors, (982), 761 states have internal predecessors, (982), 238 states have call successors, (238), 66 states have call predecessors, (238), 65 states have return successors, (237), 229 states have call predecessors, (237), 237 states have call successors, (237) [2022-07-21 13:12:36,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1457 transitions. [2022-07-21 13:12:36,822 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1457 transitions. Word has length 101 [2022-07-21 13:12:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:12:36,822 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1457 transitions. [2022-07-21 13:12:36,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 13:12:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1457 transitions. [2022-07-21 13:12:36,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 13:12:36,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:36,825 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:12:36,853 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 13:12:37,042 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 13:12:37,043 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:37,044 INFO L85 PathProgramCache]: Analyzing trace with hash -892147740, now seen corresponding path program 2 times [2022-07-21 13:12:37,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:37,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88257944] [2022-07-21 13:12:37,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 13:12:37,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:37,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:37,047 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 13:12:37,047 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 13:12:37,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 13:12:37,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 13:12:37,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:12:37,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:37,938 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-21 13:12:37,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:12:37,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:37,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88257944] [2022-07-21 13:12:37,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88257944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:12:37,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:12:37,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:12:37,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378632150] [2022-07-21 13:12:37,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:12:37,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:12:37,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:37,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:12:37,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:12:37,940 INFO L87 Difference]: Start difference. First operand 1039 states and 1457 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 13:12:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:38,144 INFO L93 Difference]: Finished difference Result 3073 states and 4372 transitions. [2022-07-21 13:12:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:12:38,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2022-07-21 13:12:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:38,158 INFO L225 Difference]: With dead ends: 3073 [2022-07-21 13:12:38,158 INFO L226 Difference]: Without dead ends: 2047 [2022-07-21 13:12:38,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 13:12:38,164 INFO L413 NwaCegarLoop]: 1744 mSDtfsCounter, 1417 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:12:38,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 3201 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:12:38,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2022-07-21 13:12:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2044. [2022-07-21 13:12:38,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1447 states have (on average 1.336558396682792) internal successors, (1934), 1499 states have internal predecessors, (1934), 469 states have call successors, (469), 131 states have call predecessors, (469), 127 states have return successors, (493), 447 states have call predecessors, (493), 468 states have call successors, (493) [2022-07-21 13:12:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2896 transitions. [2022-07-21 13:12:38,243 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2896 transitions. Word has length 101 [2022-07-21 13:12:38,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:12:38,245 INFO L495 AbstractCegarLoop]: Abstraction has 2044 states and 2896 transitions. [2022-07-21 13:12:38,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 13:12:38,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2896 transitions. [2022-07-21 13:12:38,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 13:12:38,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:38,248 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:12:38,279 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 13:12:38,459 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 13:12:38,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:38,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:38,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1799856770, now seen corresponding path program 2 times [2022-07-21 13:12:38,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:38,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561239981] [2022-07-21 13:12:38,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 13:12:38,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:38,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:38,462 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 13:12:38,463 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 13:12:39,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 13:12:39,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 13:12:39,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:12:39,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-21 13:12:39,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:12:39,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:39,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561239981] [2022-07-21 13:12:39,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561239981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:12:39,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:12:39,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:12:39,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356773495] [2022-07-21 13:12:39,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:12:39,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:12:39,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:39,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:12:39,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:12:39,370 INFO L87 Difference]: Start difference. First operand 2044 states and 2896 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 13:12:39,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:39,595 INFO L93 Difference]: Finished difference Result 5091 states and 7315 transitions. [2022-07-21 13:12:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:12:39,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 102 [2022-07-21 13:12:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:39,611 INFO L225 Difference]: With dead ends: 5091 [2022-07-21 13:12:39,611 INFO L226 Difference]: Without dead ends: 3060 [2022-07-21 13:12:39,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 13:12:39,620 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 1431 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:12:39,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 3138 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:12:39,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2022-07-21 13:12:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3057. [2022-07-21 13:12:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3057 states, 2166 states have (on average 1.33471837488458) internal successors, (2891), 2244 states have internal predecessors, (2891), 698 states have call successors, (698), 196 states have call predecessors, (698), 192 states have return successors, (771), 668 states have call predecessors, (771), 697 states have call successors, (771) [2022-07-21 13:12:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 4360 transitions. [2022-07-21 13:12:39,691 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 4360 transitions. Word has length 102 [2022-07-21 13:12:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:12:39,691 INFO L495 AbstractCegarLoop]: Abstraction has 3057 states and 4360 transitions. [2022-07-21 13:12:39,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 13:12:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 4360 transitions. [2022-07-21 13:12:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 13:12:39,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:39,693 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:12:39,724 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 13:12:39,919 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 13:12:39,920 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:39,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1090911955, now seen corresponding path program 1 times [2022-07-21 13:12:39,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:39,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896134293] [2022-07-21 13:12:39,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:12:39,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:39,922 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 13:12:39,923 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 13:12:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:12:40,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 13:12:40,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 13:12:41,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:12:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 13:12:41,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:41,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896134293] [2022-07-21 13:12:41,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896134293] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 13:12:41,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 13:12:41,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-21 13:12:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882178306] [2022-07-21 13:12:41,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 13:12:41,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 13:12:41,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 13:12:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-21 13:12:41,656 INFO L87 Difference]: Start difference. First operand 3057 states and 4360 transitions. Second operand has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 13:12:41,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:41,956 INFO L93 Difference]: Finished difference Result 6113 states and 8731 transitions. [2022-07-21 13:12:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 13:12:41,957 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) Word has length 103 [2022-07-21 13:12:41,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:41,970 INFO L225 Difference]: With dead ends: 6113 [2022-07-21 13:12:41,971 INFO L226 Difference]: Without dead ends: 3060 [2022-07-21 13:12:41,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-21 13:12:41,983 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 337 mSDsluCounter, 9337 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 10789 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:12:41,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 10789 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:12:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2022-07-21 13:12:42,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3060. [2022-07-21 13:12:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 2169 states have (on average 1.334255417242969) internal successors, (2894), 2247 states have internal predecessors, (2894), 698 states have call successors, (698), 196 states have call predecessors, (698), 192 states have return successors, (771), 668 states have call predecessors, (771), 697 states have call successors, (771) [2022-07-21 13:12:42,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4363 transitions. [2022-07-21 13:12:42,062 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4363 transitions. Word has length 103 [2022-07-21 13:12:42,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:12:42,062 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 4363 transitions. [2022-07-21 13:12:42,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 13:12:42,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4363 transitions. [2022-07-21 13:12:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-21 13:12:42,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:42,067 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:12:42,109 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 13:12:42,279 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 13:12:42,279 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash -729703118, now seen corresponding path program 1 times [2022-07-21 13:12:42,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:42,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100487401] [2022-07-21 13:12:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:12:42,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:42,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:42,282 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 13:12:42,284 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 13:12:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:12:43,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:12:43,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-21 13:12:43,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:12:43,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:43,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100487401] [2022-07-21 13:12:43,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100487401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:12:43,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:12:43,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:12:43,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806343106] [2022-07-21 13:12:43,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:12:43,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:12:43,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:12:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:12:43,303 INFO L87 Difference]: Start difference. First operand 3060 states and 4363 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 13:12:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:43,524 INFO L93 Difference]: Finished difference Result 7122 states and 10314 transitions. [2022-07-21 13:12:43,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:12:43,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 105 [2022-07-21 13:12:43,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:43,544 INFO L225 Difference]: With dead ends: 7122 [2022-07-21 13:12:43,545 INFO L226 Difference]: Without dead ends: 4075 [2022-07-21 13:12:43,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 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 13:12:43,558 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 1433 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:12:43,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 3138 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:12:43,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2022-07-21 13:12:43,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4072. [2022-07-21 13:12:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4072 states, 2889 states have (on average 1.332987192800277) internal successors, (3851), 2993 states have internal predecessors, (3851), 925 states have call successors, (925), 261 states have call predecessors, (925), 257 states have return successors, (1062), 887 states have call predecessors, (1062), 924 states have call successors, (1062) [2022-07-21 13:12:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4072 states to 4072 states and 5838 transitions. [2022-07-21 13:12:43,682 INFO L78 Accepts]: Start accepts. Automaton has 4072 states and 5838 transitions. Word has length 105 [2022-07-21 13:12:43,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:12:43,683 INFO L495 AbstractCegarLoop]: Abstraction has 4072 states and 5838 transitions. [2022-07-21 13:12:43,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 13:12:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4072 states and 5838 transitions. [2022-07-21 13:12:43,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-21 13:12:43,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:43,686 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:12:43,717 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 13:12:43,907 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 13:12:43,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:43,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:43,908 INFO L85 PathProgramCache]: Analyzing trace with hash 301796486, now seen corresponding path program 2 times [2022-07-21 13:12:43,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:43,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304861311] [2022-07-21 13:12:43,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 13:12:43,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:43,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:43,910 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 13:12:43,911 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 13:12:44,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 13:12:44,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 13:12:44,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:12:44,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-21 13:12:44,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:12:44,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:44,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304861311] [2022-07-21 13:12:44,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304861311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:12:44,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:12:44,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:12:44,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554625556] [2022-07-21 13:12:44,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:12:44,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:12:44,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:44,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:12:44,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:12:44,861 INFO L87 Difference]: Start difference. First operand 4072 states and 5838 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 13:12:45,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:45,100 INFO L93 Difference]: Finished difference Result 9141 states and 13298 transitions. [2022-07-21 13:12:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:12:45,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 104 [2022-07-21 13:12:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:45,127 INFO L225 Difference]: With dead ends: 9141 [2022-07-21 13:12:45,128 INFO L226 Difference]: Without dead ends: 5082 [2022-07-21 13:12:45,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 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 13:12:45,143 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1423 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:12:45,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 3134 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:12:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2022-07-21 13:12:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 5079. [2022-07-21 13:12:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5079 states, 3606 states have (on average 1.331392124237382) internal successors, (4801), 3736 states have internal predecessors, (4801), 1150 states have call successors, (1150), 326 states have call predecessors, (1150), 322 states have return successors, (1354), 1104 states have call predecessors, (1354), 1149 states have call successors, (1354) [2022-07-21 13:12:45,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 7305 transitions. [2022-07-21 13:12:45,288 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 7305 transitions. Word has length 104 [2022-07-21 13:12:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:12:45,288 INFO L495 AbstractCegarLoop]: Abstraction has 5079 states and 7305 transitions. [2022-07-21 13:12:45,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 13:12:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 7305 transitions. [2022-07-21 13:12:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-21 13:12:45,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:45,292 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:12:45,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 13:12:45,519 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 13:12:45,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:45,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:45,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1342420577, now seen corresponding path program 1 times [2022-07-21 13:12:45,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:45,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693401859] [2022-07-21 13:12:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:12:45,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:45,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:45,523 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 13:12:45,523 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 13:12:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:12:46,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:12:46,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 13:12:46,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:12:46,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:46,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693401859] [2022-07-21 13:12:46,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693401859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:12:46,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:12:46,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:12:46,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741453836] [2022-07-21 13:12:46,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:12:46,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:12:46,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:46,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:12:46,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:12:46,630 INFO L87 Difference]: Start difference. First operand 5079 states and 7305 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 13:12:46,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:46,960 INFO L93 Difference]: Finished difference Result 14616 states and 21098 transitions. [2022-07-21 13:12:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:12:46,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 127 [2022-07-21 13:12:46,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:47,006 INFO L225 Difference]: With dead ends: 14616 [2022-07-21 13:12:47,006 INFO L226 Difference]: Without dead ends: 9550 [2022-07-21 13:12:47,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 13:12:47,027 INFO L413 NwaCegarLoop]: 2277 mSDtfsCounter, 1281 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:12:47,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 3683 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:12:47,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9550 states. [2022-07-21 13:12:47,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9550 to 9502. [2022-07-21 13:12:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9502 states, 6757 states have (on average 1.3278081989048394) internal successors, (8972), 6997 states have internal predecessors, (8972), 2120 states have call successors, (2120), 636 states have call predecessors, (2120), 624 states have return successors, (2661), 2020 states have call predecessors, (2661), 2119 states have call successors, (2661) [2022-07-21 13:12:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9502 states to 9502 states and 13753 transitions. [2022-07-21 13:12:47,333 INFO L78 Accepts]: Start accepts. Automaton has 9502 states and 13753 transitions. Word has length 127 [2022-07-21 13:12:47,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:12:47,333 INFO L495 AbstractCegarLoop]: Abstraction has 9502 states and 13753 transitions. [2022-07-21 13:12:47,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 13:12:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand 9502 states and 13753 transitions. [2022-07-21 13:12:47,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-21 13:12:47,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:47,338 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:12:47,369 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 13:12:47,555 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 13:12:47,556 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash -105772959, now seen corresponding path program 1 times [2022-07-21 13:12:47,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:47,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916257172] [2022-07-21 13:12:47,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:12:47,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:47,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:47,559 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 13:12:47,562 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 13:12:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:12:48,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2213 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:12:48,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 13:12:48,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:12:48,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:48,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916257172] [2022-07-21 13:12:48,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916257172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:12:48,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:12:48,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:12:48,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695330865] [2022-07-21 13:12:48,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:12:48,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:12:48,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:48,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:12:48,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:12:48,839 INFO L87 Difference]: Start difference. First operand 9502 states and 13753 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 13:12:49,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:49,295 INFO L93 Difference]: Finished difference Result 25640 states and 37172 transitions. [2022-07-21 13:12:49,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:12:49,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 202 [2022-07-21 13:12:49,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:49,347 INFO L225 Difference]: With dead ends: 25640 [2022-07-21 13:12:49,347 INFO L226 Difference]: Without dead ends: 16151 [2022-07-21 13:12:49,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:12:49,369 INFO L413 NwaCegarLoop]: 2395 mSDtfsCounter, 1045 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:12:49,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 3802 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:12:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16151 states. [2022-07-21 13:12:49,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16151 to 16138. [2022-07-21 13:12:49,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16138 states, 11385 states have (on average 1.3246376811594203) internal successors, (15081), 11825 states have internal predecessors, (15081), 3667 states have call successors, (3667), 1108 states have call predecessors, (3667), 1085 states have return successors, (4666), 3478 states have call predecessors, (4666), 3666 states have call successors, (4666) [2022-07-21 13:12:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16138 states to 16138 states and 23414 transitions. [2022-07-21 13:12:49,854 INFO L78 Accepts]: Start accepts. Automaton has 16138 states and 23414 transitions. Word has length 202 [2022-07-21 13:12:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:12:49,854 INFO L495 AbstractCegarLoop]: Abstraction has 16138 states and 23414 transitions. [2022-07-21 13:12:49,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 13:12:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 16138 states and 23414 transitions. [2022-07-21 13:12:49,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-21 13:12:49,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:49,861 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-21 13:12:49,901 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 13:12:50,083 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 13:12:50,084 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:50,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:50,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1443721273, now seen corresponding path program 1 times [2022-07-21 13:12:50,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:50,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107266657] [2022-07-21 13:12:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:12:50,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:50,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:50,088 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 13:12:50,090 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 13:12:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:12:51,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 13:12:51,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-21 13:12:51,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:12:51,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:51,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107266657] [2022-07-21 13:12:51,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107266657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:12:51,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:12:51,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 13:12:51,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243010911] [2022-07-21 13:12:51,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:12:51,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 13:12:51,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:51,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 13:12:51,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 13:12:51,792 INFO L87 Difference]: Start difference. First operand 16138 states and 23414 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 13:12:52,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:52,454 INFO L93 Difference]: Finished difference Result 37228 states and 55151 transitions. [2022-07-21 13:12:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:12:52,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 230 [2022-07-21 13:12:52,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:52,524 INFO L225 Difference]: With dead ends: 37228 [2022-07-21 13:12:52,525 INFO L226 Difference]: Without dead ends: 21118 [2022-07-21 13:12:52,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 228 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 13:12:52,559 INFO L413 NwaCegarLoop]: 1906 mSDtfsCounter, 639 mSDsluCounter, 3315 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 5221 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:12:52,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 5221 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:12:52,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21118 states. [2022-07-21 13:12:52,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21118 to 16158. [2022-07-21 13:12:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16158 states, 11405 states have (on average 1.324068391056554) internal successors, (15101), 11845 states have internal predecessors, (15101), 3667 states have call successors, (3667), 1108 states have call predecessors, (3667), 1085 states have return successors, (4666), 3478 states have call predecessors, (4666), 3666 states have call successors, (4666) [2022-07-21 13:12:53,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16158 states to 16158 states and 23434 transitions. [2022-07-21 13:12:53,145 INFO L78 Accepts]: Start accepts. Automaton has 16158 states and 23434 transitions. Word has length 230 [2022-07-21 13:12:53,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:12:53,146 INFO L495 AbstractCegarLoop]: Abstraction has 16158 states and 23434 transitions. [2022-07-21 13:12:53,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 13:12:53,146 INFO L276 IsEmpty]: Start isEmpty. Operand 16158 states and 23434 transitions. [2022-07-21 13:12:53,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-07-21 13:12:53,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:53,151 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:12:53,193 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 13:12:53,375 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 13:12:53,375 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:53,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:53,376 INFO L85 PathProgramCache]: Analyzing trace with hash 928652469, now seen corresponding path program 1 times [2022-07-21 13:12:53,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:53,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535625730] [2022-07-21 13:12:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:12:53,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:53,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:53,379 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 13:12:53,379 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 13:12:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:12:54,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2321 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:12:54,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-21 13:12:54,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:12:54,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:54,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535625730] [2022-07-21 13:12:54,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535625730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:12:54,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:12:54,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:12:54,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180481238] [2022-07-21 13:12:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:12:54,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:12:54,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:54,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:12:54,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:12:54,848 INFO L87 Difference]: Start difference. First operand 16158 states and 23434 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 13:12:55,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:55,804 INFO L93 Difference]: Finished difference Result 39572 states and 57462 transitions. [2022-07-21 13:12:55,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:12:55,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 246 [2022-07-21 13:12:55,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:55,906 INFO L225 Difference]: With dead ends: 39572 [2022-07-21 13:12:55,906 INFO L226 Difference]: Without dead ends: 23442 [2022-07-21 13:12:55,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 244 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 13:12:55,954 INFO L413 NwaCegarLoop]: 2471 mSDtfsCounter, 1288 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:12:55,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 3695 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:12:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23442 states. [2022-07-21 13:12:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23442 to 23429. [2022-07-21 13:12:56,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23429 states, 16542 states have (on average 1.323177366702938) internal successors, (21888), 17182 states have internal predecessors, (21888), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1584 states have return successors, (6759), 5024 states have call predecessors, (6759), 5301 states have call successors, (6759) [2022-07-21 13:12:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23429 states to 23429 states and 33949 transitions. [2022-07-21 13:12:56,632 INFO L78 Accepts]: Start accepts. Automaton has 23429 states and 33949 transitions. Word has length 246 [2022-07-21 13:12:56,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:12:56,633 INFO L495 AbstractCegarLoop]: Abstraction has 23429 states and 33949 transitions. [2022-07-21 13:12:56,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 13:12:56,634 INFO L276 IsEmpty]: Start isEmpty. Operand 23429 states and 33949 transitions. [2022-07-21 13:12:56,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-21 13:12:56,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:12:56,642 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:12:56,681 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 13:12:56,854 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 13:12:56,855 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:12:56,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:12:56,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1591102348, now seen corresponding path program 1 times [2022-07-21 13:12:56,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:12:56,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614258610] [2022-07-21 13:12:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:12:56,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:12:56,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:12:56,860 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 13:12:56,861 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 13:12:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:12:58,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 2367 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:12:58,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:12:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-21 13:12:58,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:12:58,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:12:58,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614258610] [2022-07-21 13:12:58,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614258610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:12:58,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:12:58,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:12:58,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551200919] [2022-07-21 13:12:58,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:12:58,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:12:58,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:12:58,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:12:58,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:12:58,814 INFO L87 Difference]: Start difference. First operand 23429 states and 33949 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 13:12:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:12:59,614 INFO L93 Difference]: Finished difference Result 50505 states and 73946 transitions. [2022-07-21 13:12:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:12:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 254 [2022-07-21 13:12:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:12:59,731 INFO L225 Difference]: With dead ends: 50505 [2022-07-21 13:12:59,731 INFO L226 Difference]: Without dead ends: 27104 [2022-07-21 13:12:59,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 250 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 13:12:59,814 INFO L413 NwaCegarLoop]: 1754 mSDtfsCounter, 235 mSDsluCounter, 4995 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 6749 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 13:12:59,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 6749 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:12:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27104 states. [2022-07-21 13:13:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27104 to 23469. [2022-07-21 13:13:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23469 states, 16572 states have (on average 1.3225923244026068) internal successors, (21918), 17212 states have internal predecessors, (21918), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1594 states have return successors, (6779), 5034 states have call predecessors, (6779), 5301 states have call successors, (6779) [2022-07-21 13:13:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23469 states to 23469 states and 33999 transitions. [2022-07-21 13:13:00,751 INFO L78 Accepts]: Start accepts. Automaton has 23469 states and 33999 transitions. Word has length 254 [2022-07-21 13:13:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:13:00,751 INFO L495 AbstractCegarLoop]: Abstraction has 23469 states and 33999 transitions. [2022-07-21 13:13:00,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 13:13:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 23469 states and 33999 transitions. [2022-07-21 13:13:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-21 13:13:00,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:13:00,760 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:13:00,804 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 13:13:00,975 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 13:13:00,976 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:13:00,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:13:00,976 INFO L85 PathProgramCache]: Analyzing trace with hash 556023379, now seen corresponding path program 1 times [2022-07-21 13:13:00,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:13:00,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028445508] [2022-07-21 13:13:00,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:13:00,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:13:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:13:00,979 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 13:13:00,981 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 13:13:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:13:02,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:13:02,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:13:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-21 13:13:02,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:13:02,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:13:02,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028445508] [2022-07-21 13:13:02,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028445508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:13:02,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:13:02,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:13:02,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526371411] [2022-07-21 13:13:02,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:13:02,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:13:02,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:13:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:13:02,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:13:02,864 INFO L87 Difference]: Start difference. First operand 23469 states and 33999 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 13:13:03,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:13:03,675 INFO L93 Difference]: Finished difference Result 50605 states and 74066 transitions. [2022-07-21 13:13:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:13:03,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 261 [2022-07-21 13:13:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:13:03,786 INFO L225 Difference]: With dead ends: 50605 [2022-07-21 13:13:03,786 INFO L226 Difference]: Without dead ends: 27164 [2022-07-21 13:13:03,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 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 13:13:03,859 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 235 mSDsluCounter, 5038 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 6811 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 13:13:03,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 6811 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:13:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27164 states. [2022-07-21 13:13:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27164 to 23509. [2022-07-21 13:13:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23509 states, 16602 states have (on average 1.322009396458258) internal successors, (21948), 17242 states have internal predecessors, (21948), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5044 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-21 13:13:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23509 states to 23509 states and 34049 transitions. [2022-07-21 13:13:04,841 INFO L78 Accepts]: Start accepts. Automaton has 23509 states and 34049 transitions. Word has length 261 [2022-07-21 13:13:04,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:13:04,842 INFO L495 AbstractCegarLoop]: Abstraction has 23509 states and 34049 transitions. [2022-07-21 13:13:04,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 13:13:04,842 INFO L276 IsEmpty]: Start isEmpty. Operand 23509 states and 34049 transitions. [2022-07-21 13:13:04,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-21 13:13:04,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:13:04,850 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:13:04,899 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 13:13:05,071 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 13:13:05,072 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:13:05,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:13:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash -126924412, now seen corresponding path program 1 times [2022-07-21 13:13:05,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:13:05,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329653953] [2022-07-21 13:13:05,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:13:05,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:13:05,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:13:05,075 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 13:13:05,078 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 13:13:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:13:06,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:13:06,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:13:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-21 13:13:06,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:13:06,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:13:06,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329653953] [2022-07-21 13:13:06,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329653953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:13:06,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:13:06,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:13:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379845268] [2022-07-21 13:13:06,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:13:06,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:13:06,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:13:06,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:13:06,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:13:06,982 INFO L87 Difference]: Start difference. First operand 23509 states and 34049 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 13:13:07,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:13:07,706 INFO L93 Difference]: Finished difference Result 47170 states and 68435 transitions. [2022-07-21 13:13:07,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 13:13:07,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 260 [2022-07-21 13:13:07,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:13:07,819 INFO L225 Difference]: With dead ends: 47170 [2022-07-21 13:13:07,820 INFO L226 Difference]: Without dead ends: 23689 [2022-07-21 13:13:07,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 256 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 13:13:07,893 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 8 mSDsluCounter, 4341 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5790 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 13:13:07,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5790 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:13:07,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23689 states. [2022-07-21 13:13:08,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23689 to 23609. [2022-07-21 13:13:08,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23609 states, 16702 states have (on average 1.3200814273739672) internal successors, (22048), 17342 states have internal predecessors, (22048), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5044 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-21 13:13:08,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23609 states to 23609 states and 34149 transitions. [2022-07-21 13:13:08,658 INFO L78 Accepts]: Start accepts. Automaton has 23609 states and 34149 transitions. Word has length 260 [2022-07-21 13:13:08,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:13:08,659 INFO L495 AbstractCegarLoop]: Abstraction has 23609 states and 34149 transitions. [2022-07-21 13:13:08,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 13:13:08,660 INFO L276 IsEmpty]: Start isEmpty. Operand 23609 states and 34149 transitions. [2022-07-21 13:13:08,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-21 13:13:08,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:13:08,667 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:13:08,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-07-21 13:13:08,887 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 13:13:08,888 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:13:08,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:13:08,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2054354550, now seen corresponding path program 1 times [2022-07-21 13:13:08,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:13:08,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907607423] [2022-07-21 13:13:08,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:13:08,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:13:08,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:13:08,891 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 13:13:08,892 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 13:13:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:13:10,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 13:13:10,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:13:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-21 13:13:11,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:13:11,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:13:11,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907607423] [2022-07-21 13:13:11,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907607423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:13:11,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:13:11,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 13:13:11,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648290847] [2022-07-21 13:13:11,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:13:11,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 13:13:11,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:13:11,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 13:13:11,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 13:13:11,070 INFO L87 Difference]: Start difference. First operand 23609 states and 34149 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-21 13:13:13,250 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 13:13:14,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:13:14,145 INFO L93 Difference]: Finished difference Result 50865 states and 74356 transitions. [2022-07-21 13:13:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:13:14,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 260 [2022-07-21 13:13:14,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:13:14,278 INFO L225 Difference]: With dead ends: 50865 [2022-07-21 13:13:14,279 INFO L226 Difference]: Without dead ends: 27284 [2022-07-21 13:13:14,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:13:14,368 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 335 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 4480 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:13:14,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 4480 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 13:13:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27284 states. [2022-07-21 13:13:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27284 to 23609. [2022-07-21 13:13:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23609 states, 16702 states have (on average 1.319482696683032) internal successors, (22038), 17342 states have internal predecessors, (22038), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5044 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-21 13:13:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23609 states to 23609 states and 34139 transitions. [2022-07-21 13:13:15,228 INFO L78 Accepts]: Start accepts. Automaton has 23609 states and 34139 transitions. Word has length 260 [2022-07-21 13:13:15,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:13:15,228 INFO L495 AbstractCegarLoop]: Abstraction has 23609 states and 34139 transitions. [2022-07-21 13:13:15,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-21 13:13:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 23609 states and 34139 transitions. [2022-07-21 13:13:15,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-21 13:13:15,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:13:15,235 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:13:15,283 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 13:13:15,435 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 13:13:15,436 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:13:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:13:15,436 INFO L85 PathProgramCache]: Analyzing trace with hash 863575824, now seen corresponding path program 1 times [2022-07-21 13:13:15,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:13:15,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959881355] [2022-07-21 13:13:15,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:13:15,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:13:15,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:13:15,439 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 13:13:15,441 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 13:13:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:13:17,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 2424 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 13:13:17,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:13:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-21 13:13:17,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:13:17,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:13:17,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959881355] [2022-07-21 13:13:17,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959881355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:13:17,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:13:17,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 13:13:17,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21185558] [2022-07-21 13:13:17,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:13:17,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 13:13:17,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:13:17,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 13:13:17,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:13:17,871 INFO L87 Difference]: Start difference. First operand 23609 states and 34139 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 13:13:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:13:19,300 INFO L93 Difference]: Finished difference Result 54800 states and 80837 transitions. [2022-07-21 13:13:19,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 13:13:19,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 261 [2022-07-21 13:13:19,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:13:19,426 INFO L225 Difference]: With dead ends: 54800 [2022-07-21 13:13:19,426 INFO L226 Difference]: Without dead ends: 31219 [2022-07-21 13:13:19,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 257 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 13:13:19,496 INFO L413 NwaCegarLoop]: 1883 mSDtfsCounter, 1247 mSDsluCounter, 8595 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 10478 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 13:13:19,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 10478 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 13:13:19,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31219 states. [2022-07-21 13:13:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31219 to 23649. [2022-07-21 13:13:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23649 states, 16742 states have (on average 1.318719388364592) internal successors, (22078), 17372 states have internal predecessors, (22078), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5054 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-21 13:13:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23649 states to 23649 states and 34179 transitions. [2022-07-21 13:13:20,456 INFO L78 Accepts]: Start accepts. Automaton has 23649 states and 34179 transitions. Word has length 261 [2022-07-21 13:13:20,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:13:20,456 INFO L495 AbstractCegarLoop]: Abstraction has 23649 states and 34179 transitions. [2022-07-21 13:13:20,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 13:13:20,457 INFO L276 IsEmpty]: Start isEmpty. Operand 23649 states and 34179 transitions. [2022-07-21 13:13:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-07-21 13:13:20,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:13:20,463 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:13:20,513 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 13:13:20,691 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 13:13:20,692 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:13:20,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:13:20,692 INFO L85 PathProgramCache]: Analyzing trace with hash -774743177, now seen corresponding path program 1 times [2022-07-21 13:13:20,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:13:20,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975288082] [2022-07-21 13:13:20,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:13:20,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:13:20,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:13:20,695 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 13:13:20,697 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 13:13:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:13:22,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:13:22,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:13:22,885 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 13:13:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-21 13:13:23,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:13:23,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:13:23,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975288082] [2022-07-21 13:13:23,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975288082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:13:23,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:13:23,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:13:23,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822221083] [2022-07-21 13:13:23,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:13:23,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:13:23,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:13:23,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:13:23,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:13:23,021 INFO L87 Difference]: Start difference. First operand 23649 states and 34179 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 13:13:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:13:23,670 INFO L93 Difference]: Finished difference Result 47270 states and 68325 transitions. [2022-07-21 13:13:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:13:23,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 268 [2022-07-21 13:13:23,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:13:23,761 INFO L225 Difference]: With dead ends: 47270 [2022-07-21 13:13:23,762 INFO L226 Difference]: Without dead ends: 23649 [2022-07-21 13:13:23,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 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 13:13:23,838 INFO L413 NwaCegarLoop]: 1455 mSDtfsCounter, 0 mSDsluCounter, 4175 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5630 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 13:13:23,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5630 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 189 Unchecked, 0.0s Time] [2022-07-21 13:13:23,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23649 states. [2022-07-21 13:13:24,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23649 to 23649. [2022-07-21 13:13:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23649 states, 16742 states have (on average 1.3181220881615099) internal successors, (22068), 17372 states have internal predecessors, (22068), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5054 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-21 13:13:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23649 states to 23649 states and 34169 transitions. [2022-07-21 13:13:24,607 INFO L78 Accepts]: Start accepts. Automaton has 23649 states and 34169 transitions. Word has length 268 [2022-07-21 13:13:24,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:13:24,607 INFO L495 AbstractCegarLoop]: Abstraction has 23649 states and 34169 transitions. [2022-07-21 13:13:24,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 13:13:24,607 INFO L276 IsEmpty]: Start isEmpty. Operand 23649 states and 34169 transitions. [2022-07-21 13:13:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-21 13:13:24,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:13:24,613 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:24,656 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 13:13:24,814 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 13:13:24,815 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:13:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:13:24,815 INFO L85 PathProgramCache]: Analyzing trace with hash 859564194, now seen corresponding path program 1 times [2022-07-21 13:13:24,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:13:24,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716342699] [2022-07-21 13:13:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:13:24,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:13:24,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:13:24,839 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 13:13:24,842 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 13:13:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:13:26,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 2472 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 13:13:26,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:13:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-21 13:13:27,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:13:27,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:13:27,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716342699] [2022-07-21 13:13:27,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716342699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:13:27,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:13:27,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 13:13:27,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948622285] [2022-07-21 13:13:27,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:13:27,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 13:13:27,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:13:27,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 13:13:27,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 13:13:27,178 INFO L87 Difference]: Start difference. First operand 23649 states and 34169 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-21 13:13:28,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:13:28,455 INFO L93 Difference]: Finished difference Result 51890 states and 75916 transitions. [2022-07-21 13:13:28,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:13:28,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 272 [2022-07-21 13:13:28,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:13:28,660 INFO L225 Difference]: With dead ends: 51890 [2022-07-21 13:13:28,661 INFO L226 Difference]: Without dead ends: 28269 [2022-07-21 13:13:28,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 268 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 13:13:28,709 INFO L413 NwaCegarLoop]: 1859 mSDtfsCounter, 645 mSDsluCounter, 6716 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 8575 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:13:28,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 8575 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:13:28,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28269 states. [2022-07-21 13:13:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28269 to 23699. [2022-07-21 13:13:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23699 states, 16782 states have (on average 1.3173638422118936) internal successors, (22108), 17412 states have internal predecessors, (22108), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1614 states have return successors, (6869), 5064 states have call predecessors, (6869), 5301 states have call successors, (6869) [2022-07-21 13:13:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23699 states to 23699 states and 34279 transitions. [2022-07-21 13:13:29,548 INFO L78 Accepts]: Start accepts. Automaton has 23699 states and 34279 transitions. Word has length 272 [2022-07-21 13:13:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:13:29,549 INFO L495 AbstractCegarLoop]: Abstraction has 23699 states and 34279 transitions. [2022-07-21 13:13:29,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-21 13:13:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 23699 states and 34279 transitions. [2022-07-21 13:13:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-21 13:13:29,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:13:29,555 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:13:29,600 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 13:13:29,762 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 13:13:29,763 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:13:29,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:13:29,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1575192269, now seen corresponding path program 1 times [2022-07-21 13:13:29,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:13:29,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776136117] [2022-07-21 13:13:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:13:29,765 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:13:29,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:13:29,766 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 13:13:29,767 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 13:13:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:13:31,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 2538 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 13:13:31,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:13:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-21 13:13:31,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:13:31,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:13:31,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776136117] [2022-07-21 13:13:31,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776136117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:13:31,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:13:31,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 13:13:31,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132547144] [2022-07-21 13:13:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:13:31,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 13:13:31,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:13:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 13:13:31,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 13:13:31,803 INFO L87 Difference]: Start difference. First operand 23699 states and 34279 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 13:13:33,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:13:33,222 INFO L93 Difference]: Finished difference Result 56429 states and 81447 transitions. [2022-07-21 13:13:33,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:13:33,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 278 [2022-07-21 13:13:33,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:13:33,336 INFO L225 Difference]: With dead ends: 56429 [2022-07-21 13:13:33,336 INFO L226 Difference]: Without dead ends: 32758 [2022-07-21 13:13:33,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 276 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 13:13:33,395 INFO L413 NwaCegarLoop]: 2730 mSDtfsCounter, 1479 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 6703 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 13:13:33,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 6703 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 13:13:33,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32758 states. [2022-07-21 13:13:34,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32758 to 23719. [2022-07-21 13:13:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23719 states, 16802 states have (on average 1.3169860730865373) internal successors, (22128), 17432 states have internal predecessors, (22128), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1614 states have return successors, (6869), 5064 states have call predecessors, (6869), 5301 states have call successors, (6869) [2022-07-21 13:13:34,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23719 states to 23719 states and 34299 transitions. [2022-07-21 13:13:34,310 INFO L78 Accepts]: Start accepts. Automaton has 23719 states and 34299 transitions. Word has length 278 [2022-07-21 13:13:34,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:13:34,311 INFO L495 AbstractCegarLoop]: Abstraction has 23719 states and 34299 transitions. [2022-07-21 13:13:34,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 13:13:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 23719 states and 34299 transitions. [2022-07-21 13:13:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-21 13:13:34,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:13:34,317 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 13:13:34,361 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 13:13:34,518 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 13:13:34,519 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:13:34,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:13:34,519 INFO L85 PathProgramCache]: Analyzing trace with hash -916711623, now seen corresponding path program 1 times [2022-07-21 13:13:34,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:13:34,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183350340] [2022-07-21 13:13:34,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:13:34,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:13:34,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:13:34,522 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 13:13:34,523 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 13:13:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:13:36,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2489 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-21 13:13:36,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:13:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-21 13:13:37,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:13:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-21 13:13:38,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:13:38,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183350340] [2022-07-21 13:13:38,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183350340] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 13:13:38,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 13:13:38,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2022-07-21 13:13:38,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902884073] [2022-07-21 13:13:38,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 13:13:38,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 13:13:38,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:13:38,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 13:13:38,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-07-21 13:13:38,342 INFO L87 Difference]: Start difference. First operand 23719 states and 34299 transitions. Second operand has 20 states, 19 states have (on average 9.157894736842104) internal successors, (174), 16 states have internal predecessors, (174), 5 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) [2022-07-21 13:13:40,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 13:13:43,620 WARN L534 Checker$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 13:13:45,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:13:45,479 INFO L93 Difference]: Finished difference Result 51170 states and 74786 transitions. [2022-07-21 13:13:45,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 13:13:45,481 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 9.157894736842104) internal successors, (174), 16 states have internal predecessors, (174), 5 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) Word has length 278 [2022-07-21 13:13:45,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:13:45,572 INFO L225 Difference]: With dead ends: 51170 [2022-07-21 13:13:45,572 INFO L226 Difference]: Without dead ends: 27479 [2022-07-21 13:13:45,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-07-21 13:13:45,627 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 281 mSDsluCounter, 21032 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 22652 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-21 13:13:45,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 22652 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 341 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2022-07-21 13:13:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27479 states. [2022-07-21 13:13:46,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27479 to 23759. [2022-07-21 13:13:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23759 states, 16832 states have (on average 1.3158269961977187) internal successors, (22148), 17462 states have internal predecessors, (22148), 5312 states have call successors, (5312), 1618 states have call predecessors, (5312), 1614 states have return successors, (6879), 5069 states have call predecessors, (6879), 5311 states have call successors, (6879) [2022-07-21 13:13:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23759 states to 23759 states and 34339 transitions. [2022-07-21 13:13:46,485 INFO L78 Accepts]: Start accepts. Automaton has 23759 states and 34339 transitions. Word has length 278 [2022-07-21 13:13:46,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:13:46,485 INFO L495 AbstractCegarLoop]: Abstraction has 23759 states and 34339 transitions. [2022-07-21 13:13:46,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 9.157894736842104) internal successors, (174), 16 states have internal predecessors, (174), 5 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) [2022-07-21 13:13:46,486 INFO L276 IsEmpty]: Start isEmpty. Operand 23759 states and 34339 transitions. [2022-07-21 13:13:46,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-07-21 13:13:46,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:13:46,491 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:46,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-21 13:13:46,707 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 13:13:46,708 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:13:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:13:46,709 INFO L85 PathProgramCache]: Analyzing trace with hash 899872474, now seen corresponding path program 1 times [2022-07-21 13:13:46,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:13:46,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871910593] [2022-07-21 13:13:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:13:46,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:13:46,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:13:46,712 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 13:13:46,713 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 13:13:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:13:48,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 2769 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:13:48,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:13:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 13:13:49,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:13:49,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:13:49,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871910593] [2022-07-21 13:13:49,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871910593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:13:49,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:13:49,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:13:49,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035659008] [2022-07-21 13:13:49,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:13:49,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:13:49,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:13:49,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:13:49,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:13:49,159 INFO L87 Difference]: Start difference. First operand 23759 states and 34339 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-21 13:13:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:13:51,030 INFO L93 Difference]: Finished difference Result 57864 states and 83630 transitions. [2022-07-21 13:13:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 13:13:51,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 348 [2022-07-21 13:13:51,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:13:51,167 INFO L225 Difference]: With dead ends: 57864 [2022-07-21 13:13:51,168 INFO L226 Difference]: Without dead ends: 34133 [2022-07-21 13:13:51,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 345 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 13:13:51,247 INFO L413 NwaCegarLoop]: 2985 mSDtfsCounter, 1710 mSDsluCounter, 6900 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 9885 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 13:13:51,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 9885 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 13:13:51,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34133 states. [2022-07-21 13:13:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34133 to 23779. [2022-07-21 13:13:52,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23779 states, 16842 states have (on average 1.3156394727467047) internal successors, (22158), 17472 states have internal predecessors, (22158), 5322 states have call successors, (5322), 1618 states have call predecessors, (5322), 1614 states have return successors, (6889), 5079 states have call predecessors, (6889), 5321 states have call successors, (6889) [2022-07-21 13:13:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23779 states to 23779 states and 34369 transitions. [2022-07-21 13:13:52,306 INFO L78 Accepts]: Start accepts. Automaton has 23779 states and 34369 transitions. Word has length 348 [2022-07-21 13:13:52,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:13:52,307 INFO L495 AbstractCegarLoop]: Abstraction has 23779 states and 34369 transitions. [2022-07-21 13:13:52,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-21 13:13:52,307 INFO L276 IsEmpty]: Start isEmpty. Operand 23779 states and 34369 transitions. [2022-07-21 13:13:52,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-07-21 13:13:52,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:13:52,314 INFO L195 NwaCegarLoop]: trace histogram [20, 5, 5, 5, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:52,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-07-21 13:13:52,527 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 13:13:52,528 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:13:52,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:13:52,528 INFO L85 PathProgramCache]: Analyzing trace with hash -931415674, now seen corresponding path program 1 times [2022-07-21 13:13:52,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:13:52,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530573261] [2022-07-21 13:13:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:13:52,530 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:13:52,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:13:52,531 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 13:13:52,532 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 13:13:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:13:55,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 3570 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 13:13:55,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:13:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-07-21 13:13:55,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:13:55,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:13:55,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530573261] [2022-07-21 13:13:55,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530573261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:13:55,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:13:55,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 13:13:55,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396357525] [2022-07-21 13:13:55,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:13:55,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 13:13:55,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:13:55,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 13:13:55,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 13:13:55,882 INFO L87 Difference]: Start difference. First operand 23779 states and 34369 transitions. Second operand has 8 states, 8 states have (on average 24.75) internal successors, (198), 7 states have internal predecessors, (198), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-21 13:13:58,300 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 13:13:59,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:13:59,692 INFO L93 Difference]: Finished difference Result 49980 states and 72756 transitions. [2022-07-21 13:13:59,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 13:13:59,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.75) internal successors, (198), 7 states have internal predecessors, (198), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 407 [2022-07-21 13:13:59,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:13:59,781 INFO L225 Difference]: With dead ends: 49980 [2022-07-21 13:13:59,781 INFO L226 Difference]: Without dead ends: 26229 [2022-07-21 13:13:59,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-21 13:13:59,849 INFO L413 NwaCegarLoop]: 2067 mSDtfsCounter, 1027 mSDsluCounter, 10896 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 194 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 12963 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-21 13:13:59,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 12963 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-21 13:13:59,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26229 states. [2022-07-21 13:14:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26229 to 23229. [2022-07-21 13:14:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23229 states, 16477 states have (on average 1.3177762942283182) internal successors, (21713), 17092 states have internal predecessors, (21713), 5182 states have call successors, (5182), 1573 states have call predecessors, (5182), 1569 states have return successors, (6739), 4939 states have call predecessors, (6739), 5181 states have call successors, (6739) [2022-07-21 13:14:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23229 states to 23229 states and 33634 transitions. [2022-07-21 13:14:00,796 INFO L78 Accepts]: Start accepts. Automaton has 23229 states and 33634 transitions. Word has length 407 [2022-07-21 13:14:00,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:14:00,797 INFO L495 AbstractCegarLoop]: Abstraction has 23229 states and 33634 transitions. [2022-07-21 13:14:00,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.75) internal successors, (198), 7 states have internal predecessors, (198), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-21 13:14:00,797 INFO L276 IsEmpty]: Start isEmpty. Operand 23229 states and 33634 transitions. [2022-07-21 13:14:00,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-07-21 13:14:00,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:14:00,803 INFO L195 NwaCegarLoop]: trace histogram [20, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:14:00,875 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 13:14:01,003 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 13:14:01,004 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:14:01,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:14:01,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1631183859, now seen corresponding path program 1 times [2022-07-21 13:14:01,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:14:01,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744209367] [2022-07-21 13:14:01,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:14:01,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:14:01,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:14:01,008 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 13:14:01,009 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 13:14:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:14:04,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 3518 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 13:14:04,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:14:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 219 proven. 10 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-21 13:14:04,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:14:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 34 proven. 111 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-07-21 13:14:05,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:14:05,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744209367] [2022-07-21 13:14:05,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744209367] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 13:14:05,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 13:14:05,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-21 13:14:05,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665258310] [2022-07-21 13:14:05,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 13:14:05,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 13:14:05,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:14:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 13:14:05,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-21 13:14:05,390 INFO L87 Difference]: Start difference. First operand 23229 states and 33634 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, (61), 2 states have call predecessors, (61), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-21 13:14:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:14:07,777 INFO L93 Difference]: Finished difference Result 46555 states and 67436 transitions. [2022-07-21 13:14:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 13:14:07,778 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, (61), 2 states have call predecessors, (61), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 408 [2022-07-21 13:14:07,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:14:07,881 INFO L225 Difference]: With dead ends: 46555 [2022-07-21 13:14:07,882 INFO L226 Difference]: Without dead ends: 23324 [2022-07-21 13:14:07,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=197, Invalid=355, Unknown=0, NotChecked=0, Total=552 [2022-07-21 13:14:07,953 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 33 mSDsluCounter, 10130 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 11580 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 13:14:07,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 11580 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 13:14:07,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23324 states. [2022-07-21 13:14:08,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23324 to 23314. [2022-07-21 13:14:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23314 states, 16557 states have (on average 1.3180527873407017) internal successors, (21823), 17172 states have internal predecessors, (21823), 5182 states have call successors, (5182), 1578 states have call predecessors, (5182), 1574 states have return successors, (6739), 4939 states have call predecessors, (6739), 5181 states have call successors, (6739) [2022-07-21 13:14:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23314 states to 23314 states and 33744 transitions. [2022-07-21 13:14:09,083 INFO L78 Accepts]: Start accepts. Automaton has 23314 states and 33744 transitions. Word has length 408 [2022-07-21 13:14:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:14:09,083 INFO L495 AbstractCegarLoop]: Abstraction has 23314 states and 33744 transitions. [2022-07-21 13:14:09,084 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, (61), 2 states have call predecessors, (61), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-21 13:14:09,084 INFO L276 IsEmpty]: Start isEmpty. Operand 23314 states and 33744 transitions. [2022-07-21 13:14:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-07-21 13:14:09,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:14:09,091 INFO L195 NwaCegarLoop]: trace histogram [39, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:14:09,173 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 13:14:09,307 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 13:14:09,308 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:14:09,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:14:09,308 INFO L85 PathProgramCache]: Analyzing trace with hash 324819312, now seen corresponding path program 2 times [2022-07-21 13:14:09,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:14:09,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373153230] [2022-07-21 13:14:09,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 13:14:09,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:14:09,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:14:09,312 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 13:14:09,314 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 13:14:10,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 13:14:10,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 13:14:10,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 13:14:10,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:14:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1222 trivial. 0 not checked. [2022-07-21 13:14:11,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:14:11,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:14:11,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373153230] [2022-07-21 13:14:11,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373153230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:14:11,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:14:11,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 13:14:11,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440065740] [2022-07-21 13:14:11,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:14:11,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 13:14:11,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:14:11,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 13:14:11,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:14:11,138 INFO L87 Difference]: Start difference. First operand 23314 states and 33744 transitions. Second operand has 7 states, 6 states have (on average 29.333333333333332) internal successors, (176), 5 states have internal predecessors, (176), 4 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-21 13:14:12,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:14:12,403 INFO L93 Difference]: Finished difference Result 25627 states and 37191 transitions. [2022-07-21 13:14:12,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 13:14:12,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 29.333333333333332) internal successors, (176), 5 states have internal predecessors, (176), 4 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 427 [2022-07-21 13:14:12,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:14:12,506 INFO L225 Difference]: With dead ends: 25627 [2022-07-21 13:14:12,506 INFO L226 Difference]: Without dead ends: 25624 [2022-07-21 13:14:12,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:14:12,526 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 298 mSDsluCounter, 7139 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 8684 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 13:14:12,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 8684 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 13:14:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25624 states. [2022-07-21 13:14:13,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25624 to 23434. [2022-07-21 13:14:13,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23434 states, 16647 states have (on average 1.3163332732624498) internal successors, (21913), 17262 states have internal predecessors, (21913), 5182 states have call successors, (5182), 1608 states have call predecessors, (5182), 1604 states have return successors, (6739), 4939 states have call predecessors, (6739), 5181 states have call successors, (6739) [2022-07-21 13:14:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23434 states to 23434 states and 33834 transitions. [2022-07-21 13:14:13,521 INFO L78 Accepts]: Start accepts. Automaton has 23434 states and 33834 transitions. Word has length 427 [2022-07-21 13:14:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:14:13,521 INFO L495 AbstractCegarLoop]: Abstraction has 23434 states and 33834 transitions. [2022-07-21 13:14:13,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 29.333333333333332) internal successors, (176), 5 states have internal predecessors, (176), 4 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-21 13:14:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 23434 states and 33834 transitions. [2022-07-21 13:14:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-07-21 13:14:13,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:14:13,528 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, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:14:13,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-07-21 13:14:13,743 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 13:14:13,743 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:14:13,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:14:13,744 INFO L85 PathProgramCache]: Analyzing trace with hash 195619280, now seen corresponding path program 1 times [2022-07-21 13:14:13,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:14:13,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068851162] [2022-07-21 13:14:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:14:13,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:14:13,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:14:13,747 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 13:14:13,750 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 13:14:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:14:17,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 3709 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 13:14:17,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:14:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 445 proven. 55 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2022-07-21 13:14:17,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:14:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 64 proven. 321 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2022-07-21 13:14:20,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:14:20,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068851162] [2022-07-21 13:14:20,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068851162] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 13:14:20,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 13:14:20,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-21 13:14:20,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574301559] [2022-07-21 13:14:20,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 13:14:20,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 13:14:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:14:20,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 13:14:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-21 13:14:20,157 INFO L87 Difference]: Start difference. First operand 23434 states and 33834 transitions. Second operand has 26 states, 26 states have (on average 9.615384615384615) internal successors, (250), 26 states have internal predecessors, (250), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-21 13:14:28,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:14:28,056 INFO L93 Difference]: Finished difference Result 47224 states and 68202 transitions. [2022-07-21 13:14:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-21 13:14:28,057 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.615384615384615) internal successors, (250), 26 states have internal predecessors, (250), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 431 [2022-07-21 13:14:28,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:14:28,158 INFO L225 Difference]: With dead ends: 47224 [2022-07-21 13:14:28,159 INFO L226 Difference]: Without dead ends: 23618 [2022-07-21 13:14:28,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-07-21 13:14:28,238 INFO L413 NwaCegarLoop]: 1456 mSDtfsCounter, 144 mSDsluCounter, 17426 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 18882 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 13:14:28,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 18882 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 13:14:28,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23618 states. [2022-07-21 13:14:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23618 to 23584. [2022-07-21 13:14:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23584 states, 16797 states have (on average 1.3120200035720664) internal successors, (22038), 17412 states have internal predecessors, (22038), 5182 states have call successors, (5182), 1608 states have call predecessors, (5182), 1604 states have return successors, (6739), 4939 states have call predecessors, (6739), 5181 states have call successors, (6739) [2022-07-21 13:14:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23584 states to 23584 states and 33959 transitions. [2022-07-21 13:14:29,196 INFO L78 Accepts]: Start accepts. Automaton has 23584 states and 33959 transitions. Word has length 431 [2022-07-21 13:14:29,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:14:29,196 INFO L495 AbstractCegarLoop]: Abstraction has 23584 states and 33959 transitions. [2022-07-21 13:14:29,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.615384615384615) internal successors, (250), 26 states have internal predecessors, (250), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-21 13:14:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 23584 states and 33959 transitions. [2022-07-21 13:14:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-07-21 13:14:29,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:14:29,202 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, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:14:29,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-21 13:14:29,403 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 13:14:29,403 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:14:29,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:14:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash -422003824, now seen corresponding path program 2 times [2022-07-21 13:14:29,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:14:29,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801577316] [2022-07-21 13:14:29,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 13:14:29,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:14:29,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:14:29,408 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 13:14:29,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-21 13:14:31,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 13:14:31,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 13:14:31,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 2036 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 13:14:31,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:14:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2962 trivial. 0 not checked. [2022-07-21 13:14:31,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:14:31,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:14:31,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801577316] [2022-07-21 13:14:31,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801577316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:14:31,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:14:31,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 13:14:31,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260148280] [2022-07-21 13:14:31,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:14:31,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 13:14:31,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:14:31,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 13:14:31,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:14:31,435 INFO L87 Difference]: Start difference. First operand 23584 states and 33959 transitions. Second operand has 10 states, 10 states have (on average 18.7) internal successors, (187), 8 states have internal predecessors, (187), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (37), 5 states have call predecessors, (37), 3 states have call successors, (37) [2022-07-21 13:14:35,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:14:35,540 INFO L93 Difference]: Finished difference Result 57349 states and 82570 transitions. [2022-07-21 13:14:35,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 13:14:35,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 8 states have internal predecessors, (187), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (37), 5 states have call predecessors, (37), 3 states have call successors, (37) Word has length 467 [2022-07-21 13:14:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:14:35,662 INFO L225 Difference]: With dead ends: 57349 [2022-07-21 13:14:35,663 INFO L226 Difference]: Without dead ends: 33793 [2022-07-21 13:14:35,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-07-21 13:14:35,728 INFO L413 NwaCegarLoop]: 2081 mSDtfsCounter, 1973 mSDsluCounter, 15849 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 17930 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 13:14:35,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1976 Valid, 17930 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 13:14:35,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33793 states. [2022-07-21 13:14:36,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33793 to 23679. [2022-07-21 13:14:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23679 states, 16867 states have (on average 1.3107250844844964) internal successors, (22108), 17482 states have internal predecessors, (22108), 5192 states have call successors, (5192), 1608 states have call predecessors, (5192), 1619 states have return successors, (6764), 4969 states have call predecessors, (6764), 5191 states have call successors, (6764) [2022-07-21 13:14:36,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23679 states to 23679 states and 34064 transitions. [2022-07-21 13:14:36,856 INFO L78 Accepts]: Start accepts. Automaton has 23679 states and 34064 transitions. Word has length 467 [2022-07-21 13:14:36,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:14:36,856 INFO L495 AbstractCegarLoop]: Abstraction has 23679 states and 34064 transitions. [2022-07-21 13:14:36,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 8 states have internal predecessors, (187), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (37), 5 states have call predecessors, (37), 3 states have call successors, (37) [2022-07-21 13:14:36,856 INFO L276 IsEmpty]: Start isEmpty. Operand 23679 states and 34064 transitions. [2022-07-21 13:14:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-07-21 13:14:36,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:14:36,862 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, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:14:36,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-07-21 13:14:37,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:14:37,063 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:14:37,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:14:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash -914629998, now seen corresponding path program 1 times [2022-07-21 13:14:37,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:14:37,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416898364] [2022-07-21 13:14:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:14:37,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:14:37,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:14:37,068 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:14:37,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-21 13:14:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:14:41,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 4103 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-21 13:14:41,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:14:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 1441 proven. 253 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2022-07-21 13:14:42,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:14:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 124 proven. 1335 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-07-21 13:14:49,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:14:49,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416898364] [2022-07-21 13:14:49,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416898364] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 13:14:49,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 13:14:49,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-21 13:14:49,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250029407] [2022-07-21 13:14:49,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 13:14:49,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-21 13:14:49,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:14:49,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-21 13:14:49,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-07-21 13:14:49,182 INFO L87 Difference]: Start difference. First operand 23679 states and 34064 transitions. Second operand has 50 states, 50 states have (on average 5.48) internal successors, (274), 50 states have internal predecessors, (274), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-21 13:15:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:15:22,942 INFO L93 Difference]: Finished difference Result 48092 states and 69214 transitions. [2022-07-21 13:15:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-07-21 13:15:22,943 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.48) internal successors, (274), 50 states have internal predecessors, (274), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 467 [2022-07-21 13:15:22,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:15:23,124 INFO L225 Difference]: With dead ends: 48092 [2022-07-21 13:15:23,125 INFO L226 Difference]: Without dead ends: 24061 [2022-07-21 13:15:23,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1926 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=3869, Invalid=9013, Unknown=0, NotChecked=0, Total=12882 [2022-07-21 13:15:23,181 INFO L413 NwaCegarLoop]: 1468 mSDtfsCounter, 739 mSDsluCounter, 33679 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 35147 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-07-21 13:15:23,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 35147 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 2438 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-07-21 13:15:23,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24061 states. [2022-07-21 13:15:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24061 to 23979. [2022-07-21 13:15:24,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23979 states, 17167 states have (on average 1.3052950428147025) internal successors, (22408), 17782 states have internal predecessors, (22408), 5192 states have call successors, (5192), 1608 states have call predecessors, (5192), 1619 states have return successors, (6764), 4969 states have call predecessors, (6764), 5191 states have call successors, (6764) [2022-07-21 13:15:24,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23979 states to 23979 states and 34364 transitions. [2022-07-21 13:15:24,142 INFO L78 Accepts]: Start accepts. Automaton has 23979 states and 34364 transitions. Word has length 467 [2022-07-21 13:15:24,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:15:24,142 INFO L495 AbstractCegarLoop]: Abstraction has 23979 states and 34364 transitions. [2022-07-21 13:15:24,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.48) internal successors, (274), 50 states have internal predecessors, (274), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-21 13:15:24,142 INFO L276 IsEmpty]: Start isEmpty. Operand 23979 states and 34364 transitions. [2022-07-21 13:15:24,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2022-07-21 13:15:24,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:15:24,148 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, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:15:24,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-07-21 13:15:24,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:15:24,349 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:15:24,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:15:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1558896146, now seen corresponding path program 2 times [2022-07-21 13:15:24,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:15:24,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515049395] [2022-07-21 13:15:24,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 13:15:24,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:15:24,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:15:24,353 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:15:24,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-21 13:15:25,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 13:15:25,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 13:15:26,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 13:15:26,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:15:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10855 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10855 trivial. 0 not checked. [2022-07-21 13:15:26,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:15:26,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:15:26,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515049395] [2022-07-21 13:15:26,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515049395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:15:26,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:15:26,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 13:15:26,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968419941] [2022-07-21 13:15:26,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:15:26,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 13:15:26,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:15:26,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 13:15:26,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 13:15:26,324 INFO L87 Difference]: Start difference. First operand 23979 states and 34364 transitions. Second operand has 8 states, 7 states have (on average 26.142857142857142) internal successors, (183), 5 states have internal predecessors, (183), 4 states have call successors, (43), 5 states have call predecessors, (43), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-21 13:15:27,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:15:27,534 INFO L93 Difference]: Finished difference Result 24102 states and 34486 transitions. [2022-07-21 13:15:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 13:15:27,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 26.142857142857142) internal successors, (183), 5 states have internal predecessors, (183), 4 states have call successors, (43), 5 states have call predecessors, (43), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 539 [2022-07-21 13:15:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:15:27,620 INFO L225 Difference]: With dead ends: 24102 [2022-07-21 13:15:27,620 INFO L226 Difference]: Without dead ends: 24099 [2022-07-21 13:15:27,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-21 13:15:27,638 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 247 mSDsluCounter, 8300 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 9741 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 13:15:27,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 9741 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 13:15:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24099 states. [2022-07-21 13:15:28,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24099 to 24099. [2022-07-21 13:15:28,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24099 states, 17257 states have (on average 1.3037028452222286) internal successors, (22498), 17872 states have internal predecessors, (22498), 5192 states have call successors, (5192), 1638 states have call predecessors, (5192), 1649 states have return successors, (6764), 4969 states have call predecessors, (6764), 5191 states have call successors, (6764) [2022-07-21 13:15:28,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24099 states to 24099 states and 34454 transitions. [2022-07-21 13:15:28,688 INFO L78 Accepts]: Start accepts. Automaton has 24099 states and 34454 transitions. Word has length 539 [2022-07-21 13:15:28,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:15:28,688 INFO L495 AbstractCegarLoop]: Abstraction has 24099 states and 34454 transitions. [2022-07-21 13:15:28,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 26.142857142857142) internal successors, (183), 5 states have internal predecessors, (183), 4 states have call successors, (43), 5 states have call predecessors, (43), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-21 13:15:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 24099 states and 34454 transitions. [2022-07-21 13:15:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2022-07-21 13:15:28,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:15:28,695 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, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:15:28,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-07-21 13:15:28,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:15:28,896 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 13:15:28,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:15:28,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1298664166, now seen corresponding path program 1 times [2022-07-21 13:15:28,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:15:28,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039886430] [2022-07-21 13:15:28,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:15:28,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:15:28,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:15:28,900 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:15:28,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-21 13:15:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:15:33,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 4889 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-21 13:15:33,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:15:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 10855 backedges. 5161 proven. 1081 refuted. 0 times theorem prover too weak. 4613 trivial. 0 not checked. [2022-07-21 13:15:41,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:16:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10855 backedges. 244 proven. 5523 refuted. 0 times theorem prover too weak. 5088 trivial. 0 not checked. [2022-07-21 13:16:03,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:16:03,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039886430] [2022-07-21 13:16:03,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039886430] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 13:16:03,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 13:16:03,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2022-07-21 13:16:03,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348381791] [2022-07-21 13:16:03,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 13:16:03,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-07-21 13:16:03,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:16:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-07-21 13:16:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2022-07-21 13:16:03,875 INFO L87 Difference]: Start difference. First operand 24099 states and 34454 transitions. Second operand has 98 states, 98 states have (on average 3.3469387755102042) internal successors, (328), 98 states have internal predecessors, (328), 2 states have call successors, (65), 2 states have call predecessors, (65), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62)