./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.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 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:03:12,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:03:12,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:03:12,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:03:12,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:03:12,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:03:12,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:03:12,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:03:12,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:03:12,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:03:12,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:03:12,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:03:12,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:03:12,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:03:12,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:03:12,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:03:12,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:03:12,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:03:12,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:03:12,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:03:12,759 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:03:12,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:03:12,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:03:12,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:03:12,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:03:12,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:03:12,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:03:12,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:03:12,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:03:12,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:03:12,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:03:12,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:03:12,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:03:12,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:03:12,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:03:12,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:03:12,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:03:12,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:03:12,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:03:12,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:03:12,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:03:12,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:03:12,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:03:12,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:03:12,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:03:12,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:03:12,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:03:12,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:03:12,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:03:12,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:03:12,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:03:12,810 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:03:12,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:03:12,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:03:12,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:03:12,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:03:12,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:03:12,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:03:12,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:03:12,813 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:03:12,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:03:12,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:03:12,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:03:12,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:03:12,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:03:12,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:03:12,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:03:12,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:03:12,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:03:12,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:03:12,816 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:03:12,816 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:03:12,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:03:12,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2022-07-22 23:03:13,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:03:13,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:03:13,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:03:13,042 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:03:13,042 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:03:13,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-07-22 23:03:13,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8fdf3ff2/b7b1faa726374f06b474f4f6171bfe55/FLAGd40d7d1b5 [2022-07-22 23:03:13,683 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:03:13,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-07-22 23:03:13,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8fdf3ff2/b7b1faa726374f06b474f4f6171bfe55/FLAGd40d7d1b5 [2022-07-22 23:03:14,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8fdf3ff2/b7b1faa726374f06b474f4f6171bfe55 [2022-07-22 23:03:14,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:03:14,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:03:14,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:03:14,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:03:14,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:03:14,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:03:14" (1/1) ... [2022-07-22 23:03:14,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d21f17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:14, skipping insertion in model container [2022-07-22 23:03:14,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:03:14" (1/1) ... [2022-07-22 23:03:14,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:03:14,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:03:15,222 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-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-07-22 23:03:15,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:03:15,278 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:03:15,404 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: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: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: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) [2022-07-22 23:03:15,413 INFO L158 Benchmark]: Toolchain (without parser) took 1276.00ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 49.7MB in the beginning and 58.9MB in the end (delta: -9.3MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2022-07-22 23:03:15,415 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory is still 42.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 23:03:15,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1274.25ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 49.3MB in the beginning and 58.9MB in the end (delta: -9.6MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2022-07-22 23:03:15,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory is still 42.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1274.25ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 49.3MB in the beginning and 58.9MB in the end (delta: -9.6MB). Peak memory consumption was 45.8MB. 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-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.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 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:03:17,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:03:17,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:03:17,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:03:17,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:03:17,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:03:17,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:03:17,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:03:17,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:03:17,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:03:17,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:03:17,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:03:17,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:03:17,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:03:17,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:03:17,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:03:17,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:03:17,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:03:17,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:03:17,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:03:17,185 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:03:17,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:03:17,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:03:17,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:03:17,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:03:17,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:03:17,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:03:17,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:03:17,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:03:17,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:03:17,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:03:17,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:03:17,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:03:17,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:03:17,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:03:17,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:03:17,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:03:17,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:03:17,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:03:17,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:03:17,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:03:17,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:03:17,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-22 23:03:17,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:03:17,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:03:17,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:03:17,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:03:17,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:03:17,237 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:03:17,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:03:17,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:03:17,238 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:03:17,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:03:17,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:03:17,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:03:17,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:03:17,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:03:17,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 23:03:17,240 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 23:03:17,240 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 23:03:17,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:03:17,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:03:17,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:03:17,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:03:17,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:03:17,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:03:17,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:03:17,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:03:17,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:03:17,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:03:17,242 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 23:03:17,242 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 23:03:17,242 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:03:17,243 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:03:17,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:03:17,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 23:03:17,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2022-07-22 23:03:17,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:03:17,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:03:17,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:03:17,575 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:03:17,575 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:03:17,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-07-22 23:03:17,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d580ddb/883609de0be9478d986caf8e724b108e/FLAGdfa62c786 [2022-07-22 23:03:18,256 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:03:18,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-07-22 23:03:18,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d580ddb/883609de0be9478d986caf8e724b108e/FLAGdfa62c786 [2022-07-22 23:03:18,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d580ddb/883609de0be9478d986caf8e724b108e [2022-07-22 23:03:18,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:03:18,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:03:18,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:03:18,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:03:18,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:03:18,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:03:18" (1/1) ... [2022-07-22 23:03:18,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20478e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:18, skipping insertion in model container [2022-07-22 23:03:18,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:03:18" (1/1) ... [2022-07-22 23:03:18,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:03:18,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:03:19,759 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-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-07-22 23:03:19,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:03:19,829 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-22 23:03:19,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:03:20,078 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-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-07-22 23:03:20,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:03:20,104 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:03:20,323 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-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-07-22 23:03:20,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:03:20,405 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:03:20,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:20 WrapperNode [2022-07-22 23:03:20,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:03:20,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:03:20,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:03:20,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:03:20,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:20" (1/1) ... [2022-07-22 23:03:20,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:20" (1/1) ... [2022-07-22 23:03:20,676 INFO L137 Inliner]: procedures = 195, calls = 1464, calls flagged for inlining = 91, calls inlined = 88, statements flattened = 4028 [2022-07-22 23:03:20,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:03:20,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:03:20,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:03:20,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:03:20,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:20" (1/1) ... [2022-07-22 23:03:20,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:20" (1/1) ... [2022-07-22 23:03:20,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:20" (1/1) ... [2022-07-22 23:03:20,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:20" (1/1) ... [2022-07-22 23:03:20,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:20" (1/1) ... [2022-07-22 23:03:20,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:20" (1/1) ... [2022-07-22 23:03:20,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:20" (1/1) ... [2022-07-22 23:03:20,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:03:20,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:03:20,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:03:20,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:03:20,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:20" (1/1) ... [2022-07-22 23:03:20,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:03:20,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:03:20,921 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) [2022-07-22 23:03:20,942 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 [2022-07-22 23:03:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_sw [2022-07-22 23:03:20,974 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_sw [2022-07-22 23:03:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-22 23:03:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-07-22 23:03:20,975 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-07-22 23:03:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_recsrc2 [2022-07-22 23:03:20,975 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_recsrc2 [2022-07-22 23:03:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-22 23:03:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-22 23:03:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-22 23:03:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-22 23:03:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_input [2022-07-22 23:03:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_input [2022-07-22 23:03:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:03:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:03:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-07-22 23:03:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:03:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:03:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_vol [2022-07-22 23:03:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_vol [2022-07-22 23:03:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 23:03:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 23:03:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv2 [2022-07-22 23:03:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv2 [2022-07-22 23:03:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv1 [2022-07-22 23:03:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv1 [2022-07-22 23:03:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2022-07-22 23:03:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2022-07-22 23:03:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-07-22 23:03:20,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-07-22 23:03:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:03:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure mixer_slot_clear [2022-07-22 23:03:20,979 INFO L138 BoogieDeclarations]: Found implementation of procedure mixer_slot_clear [2022-07-22 23:03:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_ioctl1 [2022-07-22 23:03:20,980 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_ioctl1 [2022-07-22 23:03:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-07-22 23:03:20,980 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-07-22 23:03:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:03:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-22 23:03:20,980 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-22 23:03:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-07-22 23:03:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-07-22 23:03:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-22 23:03:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-22 23:03:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-22 23:03:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:03:20,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-22 23:03:20,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:03:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_test [2022-07-22 23:03:20,983 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_test [2022-07-22 23:03:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2022-07-22 23:03:20,983 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2022-07-22 23:03:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-22 23:03:20,984 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-22 23:03:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 23:03:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-22 23:03:20,985 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-22 23:03:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:03:20,985 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:03:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_open [2022-07-22 23:03:20,986 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_open [2022-07-22 23:03:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-22 23:03:20,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-22 23:03:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_file_remove [2022-07-22 23:03:20,986 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_file_remove [2022-07-22 23:03:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_find_numid [2022-07-22 23:03:20,986 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_find_numid [2022-07-22 23:03:20,987 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv [2022-07-22 23:03:20,987 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv [2022-07-22 23:03:20,987 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:03:20,987 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:03:20,988 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_test_id [2022-07-22 23:03:20,988 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_test_id [2022-07-22 23:03:20,988 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-22 23:03:20,988 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-22 23:03:20,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-22 23:03:20,988 INFO L130 BoogieDeclarations]: Found specification of procedure snd_info_free_entry [2022-07-22 23:03:20,988 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_info_free_entry [2022-07-22 23:03:20,988 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-22 23:03:20,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-22 23:03:20,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:03:20,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:03:20,989 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-22 23:03:20,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-22 23:03:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_release [2022-07-22 23:03:20,990 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_release [2022-07-22 23:03:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:03:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2022-07-22 23:03:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-07-22 23:03:20,990 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-07-22 23:03:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:03:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:03:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 23:03:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_notify [2022-07-22 23:03:20,991 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_notify [2022-07-22 23:03:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:03:20,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:03:20,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-07-22 23:03:20,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-07-22 23:03:20,992 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-07-22 23:03:20,992 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-07-22 23:03:20,992 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_sw [2022-07-22 23:03:20,992 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_sw [2022-07-22 23:03:20,992 INFO L130 BoogieDeclarations]: Found specification of procedure snd_oss_info_register [2022-07-22 23:03:20,993 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_oss_info_register [2022-07-22 23:03:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_vol [2022-07-22 23:03:20,993 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_vol [2022-07-22 23:03:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_notify_handler [2022-07-22 23:03:20,993 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_notify_handler [2022-07-22 23:03:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_dereference [2022-07-22 23:03:20,994 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_dereference [2022-07-22 23:03:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:03:20,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:03:21,522 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:03:21,524 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:03:46,059 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:03:46,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:03:46,073 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 23:03:46,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:03:46 BoogieIcfgContainer [2022-07-22 23:03:46,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:03:46,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:03:46,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:03:46,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:03:46,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:03:18" (1/3) ... [2022-07-22 23:03:46,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa770f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:03:46, skipping insertion in model container [2022-07-22 23:03:46,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:20" (2/3) ... [2022-07-22 23:03:46,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa770f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:03:46, skipping insertion in model container [2022-07-22 23:03:46,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:03:46" (3/3) ... [2022-07-22 23:03:46,084 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-07-22 23:03:46,095 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:03:46,095 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:03:46,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:03:46,157 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@5e063db5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4e5666bb [2022-07-22 23:03:46,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:03:46,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 1191 states, 889 states have (on average 1.4668166479190101) internal successors, (1304), 906 states have internal predecessors, (1304), 254 states have call successors, (254), 46 states have call predecessors, (254), 46 states have return successors, (254), 254 states have call predecessors, (254), 254 states have call successors, (254) [2022-07-22 23:03:46,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-22 23:03:46,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:03:46,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:03:46,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:03:46,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:03:46,176 INFO L85 PathProgramCache]: Analyzing trace with hash 910515778, now seen corresponding path program 1 times [2022-07-22 23:03:46,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:03:46,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910831299] [2022-07-22 23:03:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:03:46,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:03:46,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:03:46,195 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) [2022-07-22 23:03:46,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 23:03:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:03:46,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:03:46,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:03:46,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:03:46,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:03:46,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:03:46,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910831299] [2022-07-22 23:03:46,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910831299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:03:46,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:03:46,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:03:46,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10919245] [2022-07-22 23:03:46,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:03:46,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:03:46,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:03:46,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:03:46,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:03:46,808 INFO L87 Difference]: Start difference. First operand has 1191 states, 889 states have (on average 1.4668166479190101) internal successors, (1304), 906 states have internal predecessors, (1304), 254 states have call successors, (254), 46 states have call predecessors, (254), 46 states have return successors, (254), 254 states have call predecessors, (254), 254 states have call successors, (254) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:03:47,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:03:47,091 INFO L93 Difference]: Finished difference Result 2322 states and 3654 transitions. [2022-07-22 23:03:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:03:47,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-22 23:03:47,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:03:47,112 INFO L225 Difference]: With dead ends: 2322 [2022-07-22 23:03:47,113 INFO L226 Difference]: Without dead ends: 1132 [2022-07-22 23:03:47,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:03:47,131 INFO L413 NwaCegarLoop]: 1702 mSDtfsCounter, 5 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:03:47,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3401 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 23:03:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-07-22 23:03:47,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1127. [2022-07-22 23:03:47,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 836 states have (on average 1.450956937799043) internal successors, (1213), 849 states have internal predecessors, (1213), 246 states have call successors, (246), 45 states have call predecessors, (246), 44 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2022-07-22 23:03:47,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1702 transitions. [2022-07-22 23:03:47,245 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1702 transitions. Word has length 14 [2022-07-22 23:03:47,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:03:47,246 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1702 transitions. [2022-07-22 23:03:47,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:03:47,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1702 transitions. [2022-07-22 23:03:47,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 23:03:47,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:03:47,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:03:47,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-22 23:03:47,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:03:47,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:03:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:03:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1958805779, now seen corresponding path program 1 times [2022-07-22 23:03:47,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:03:47,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760550241] [2022-07-22 23:03:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:03:47,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:03:47,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:03:47,466 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) [2022-07-22 23:03:47,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 23:03:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:03:47,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:03:47,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:03:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:03:48,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:03:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:03:48,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:03:48,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760550241] [2022-07-22 23:03:48,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760550241] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:03:48,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:03:48,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-22 23:03:48,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874793315] [2022-07-22 23:03:48,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:03:48,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:03:48,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:03:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:03:48,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:03:48,431 INFO L87 Difference]: Start difference. First operand 1127 states and 1702 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:03:49,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:03:49,096 INFO L93 Difference]: Finished difference Result 2260 states and 3415 transitions. [2022-07-22 23:03:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:03:49,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-07-22 23:03:49,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:03:49,106 INFO L225 Difference]: With dead ends: 2260 [2022-07-22 23:03:49,106 INFO L226 Difference]: Without dead ends: 1145 [2022-07-22 23:03:49,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:03:49,112 INFO L413 NwaCegarLoop]: 1703 mSDtfsCounter, 29 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 5096 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:03:49,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 5096 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 23:03:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-07-22 23:03:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1145. [2022-07-22 23:03:49,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 851 states have (on average 1.4465334900117508) internal successors, (1231), 864 states have internal predecessors, (1231), 249 states have call successors, (249), 45 states have call predecessors, (249), 44 states have return successors, (246), 246 states have call predecessors, (246), 246 states have call successors, (246) [2022-07-22 23:03:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1726 transitions. [2022-07-22 23:03:49,155 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1726 transitions. Word has length 18 [2022-07-22 23:03:49,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:03:49,156 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1726 transitions. [2022-07-22 23:03:49,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:03:49,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1726 transitions. [2022-07-22 23:03:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 23:03:49,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:03:49,158 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:03:49,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-22 23:03:49,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:03:49,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:03:49,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:03:49,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1947136018, now seen corresponding path program 2 times [2022-07-22 23:03:49,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:03:49,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951455586] [2022-07-22 23:03:49,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:03:49,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:03:49,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:03:49,383 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) [2022-07-22 23:03:49,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-22 23:03:49,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:03:49,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:03:49,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:03:49,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:03:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 23:03:49,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:03:49,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:03:49,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951455586] [2022-07-22 23:03:49,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951455586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:03:49,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:03:49,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:03:49,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677034640] [2022-07-22 23:03:49,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:03:49,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:03:49,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:03:49,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:03:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:03:49,979 INFO L87 Difference]: Start difference. First operand 1145 states and 1726 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:03:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:03:50,202 INFO L93 Difference]: Finished difference Result 1150 states and 1730 transitions. [2022-07-22 23:03:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:03:50,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-07-22 23:03:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:03:50,210 INFO L225 Difference]: With dead ends: 1150 [2022-07-22 23:03:50,211 INFO L226 Difference]: Without dead ends: 1145 [2022-07-22 23:03:50,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:03:50,214 INFO L413 NwaCegarLoop]: 1698 mSDtfsCounter, 75 mSDsluCounter, 3305 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 5003 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:03:50,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 5003 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 23:03:50,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-07-22 23:03:50,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1145. [2022-07-22 23:03:50,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 851 states have (on average 1.445358401880141) internal successors, (1230), 864 states have internal predecessors, (1230), 249 states have call successors, (249), 45 states have call predecessors, (249), 44 states have return successors, (246), 246 states have call predecessors, (246), 246 states have call successors, (246) [2022-07-22 23:03:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1725 transitions. [2022-07-22 23:03:50,253 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1725 transitions. Word has length 30 [2022-07-22 23:03:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:03:50,254 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1725 transitions. [2022-07-22 23:03:50,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:03:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1725 transitions. [2022-07-22 23:03:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 23:03:50,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:03:50,260 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:03:50,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-22 23:03:50,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:03:50,480 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:03:50,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:03:50,483 INFO L85 PathProgramCache]: Analyzing trace with hash -280593772, now seen corresponding path program 1 times [2022-07-22 23:03:50,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:03:50,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534727502] [2022-07-22 23:03:50,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:03:50,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:03:50,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:03:50,486 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) [2022-07-22 23:03:50,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-22 23:03:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:03:50,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 23:03:50,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:03:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:03:51,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:03:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 23:03:53,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:03:53,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534727502] [2022-07-22 23:03:53,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534727502] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:03:53,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:03:53,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-22 23:03:53,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012863458] [2022-07-22 23:03:53,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:03:53,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 23:03:53,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:03:53,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 23:03:53,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:03:53,033 INFO L87 Difference]: Start difference. First operand 1145 states and 1725 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 23:03:56,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:03:56,241 INFO L93 Difference]: Finished difference Result 2296 states and 3464 transitions. [2022-07-22 23:03:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 23:03:56,242 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-07-22 23:03:56,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:03:56,250 INFO L225 Difference]: With dead ends: 2296 [2022-07-22 23:03:56,250 INFO L226 Difference]: Without dead ends: 1181 [2022-07-22 23:03:56,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:03:56,260 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 92 mSDsluCounter, 8526 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 10243 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:03:56,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 10243 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 23:03:56,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-07-22 23:03:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2022-07-22 23:03:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 881 states have (on average 1.4370034052213394) internal successors, (1266), 894 states have internal predecessors, (1266), 255 states have call successors, (255), 45 states have call predecessors, (255), 44 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2022-07-22 23:03:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1773 transitions. [2022-07-22 23:03:56,325 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1773 transitions. Word has length 38 [2022-07-22 23:03:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:03:56,326 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1773 transitions. [2022-07-22 23:03:56,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 23:03:56,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1773 transitions. [2022-07-22 23:03:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 23:03:56,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:03:56,330 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:03:56,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-22 23:03:56,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:03:56,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:03:56,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:03:56,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1417493872, now seen corresponding path program 1 times [2022-07-22 23:03:56,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:03:56,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352769771] [2022-07-22 23:03:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:03:56,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:03:56,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:03:56,551 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) [2022-07-22 23:03:56,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-22 23:03:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:03:58,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 23:03:58,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:03:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:03:58,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:03:58,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:03:58,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352769771] [2022-07-22 23:03:58,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352769771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:03:58,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:03:58,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:03:58,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743456987] [2022-07-22 23:03:58,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:03:58,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:03:58,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:03:58,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:03:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:03:58,539 INFO L87 Difference]: Start difference. First operand 1181 states and 1773 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 23:03:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:03:58,677 INFO L93 Difference]: Finished difference Result 2355 states and 3557 transitions. [2022-07-22 23:03:58,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:03:58,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2022-07-22 23:03:58,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:03:58,698 INFO L225 Difference]: With dead ends: 2355 [2022-07-22 23:03:58,698 INFO L226 Difference]: Without dead ends: 1183 [2022-07-22 23:03:58,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:03:58,704 INFO L413 NwaCegarLoop]: 1701 mSDtfsCounter, 38 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3355 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:03:58,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 23:03:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-07-22 23:03:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1181. [2022-07-22 23:03:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 881 states have (on average 1.4358683314415437) internal successors, (1265), 894 states have internal predecessors, (1265), 255 states have call successors, (255), 45 states have call predecessors, (255), 44 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2022-07-22 23:03:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1772 transitions. [2022-07-22 23:03:58,742 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1772 transitions. Word has length 55 [2022-07-22 23:03:58,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:03:58,743 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1772 transitions. [2022-07-22 23:03:58,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 23:03:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1772 transitions. [2022-07-22 23:03:58,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 23:03:58,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:03:58,745 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:03:58,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-22 23:03:58,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:03:58,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:03:58,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:03:58,968 INFO L85 PathProgramCache]: Analyzing trace with hash -967271630, now seen corresponding path program 1 times [2022-07-22 23:03:58,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:03:58,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598225974] [2022-07-22 23:03:58,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:03:58,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:03:58,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:03:58,972 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) [2022-07-22 23:03:58,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-22 23:04:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:04:00,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 2361 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 23:04:00,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:04:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 23:04:02,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:04:02,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:04:02,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598225974] [2022-07-22 23:04:02,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598225974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:04:02,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:04:02,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:04:02,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596358785] [2022-07-22 23:04:02,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:04:02,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:04:02,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:04:02,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:04:02,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:04:02,277 INFO L87 Difference]: Start difference. First operand 1181 states and 1772 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:04:05,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:04:06,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:04:06,690 INFO L93 Difference]: Finished difference Result 2363 states and 3569 transitions. [2022-07-22 23:04:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:04:06,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-22 23:04:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:04:06,698 INFO L225 Difference]: With dead ends: 2363 [2022-07-22 23:04:06,699 INFO L226 Difference]: Without dead ends: 1191 [2022-07-22 23:04:06,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:04:06,705 INFO L413 NwaCegarLoop]: 1698 mSDtfsCounter, 5 mSDsluCounter, 10158 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11856 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:04:06,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 11856 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-07-22 23:04:06,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-07-22 23:04:06,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1189. [2022-07-22 23:04:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 887 states have (on average 1.4329199549041713) internal successors, (1271), 900 states have internal predecessors, (1271), 255 states have call successors, (255), 45 states have call predecessors, (255), 46 states have return successors, (259), 254 states have call predecessors, (259), 252 states have call successors, (259) [2022-07-22 23:04:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1785 transitions. [2022-07-22 23:04:06,742 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1785 transitions. Word has length 70 [2022-07-22 23:04:06,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:04:06,743 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1785 transitions. [2022-07-22 23:04:06,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:04:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1785 transitions. [2022-07-22 23:04:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 23:04:06,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:04:06,746 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:04:06,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-22 23:04:06,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:04:06,964 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:04:06,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:04:06,964 INFO L85 PathProgramCache]: Analyzing trace with hash 857270872, now seen corresponding path program 1 times [2022-07-22 23:04:06,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:04:06,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881646872] [2022-07-22 23:04:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:04:06,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:04:06,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:04:06,968 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) [2022-07-22 23:04:06,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-22 23:04:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:04:09,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:04:09,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:04:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 23:04:09,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:04:09,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:04:09,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881646872] [2022-07-22 23:04:09,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881646872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:04:09,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:04:09,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:04:09,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292646555] [2022-07-22 23:04:09,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:04:09,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:04:09,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:04:09,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:04:09,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:04:09,359 INFO L87 Difference]: Start difference. First operand 1189 states and 1785 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:04:11,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:04:11,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:04:11,836 INFO L93 Difference]: Finished difference Result 2371 states and 3572 transitions. [2022-07-22 23:04:12,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:04:12,708 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-07-22 23:04:12,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:04:12,716 INFO L225 Difference]: With dead ends: 2371 [2022-07-22 23:04:12,716 INFO L226 Difference]: Without dead ends: 1191 [2022-07-22 23:04:12,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:04:12,722 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 1 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:04:12,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3391 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 23:04:12,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-07-22 23:04:12,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1190. [2022-07-22 23:04:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 888 states have (on average 1.4324324324324325) internal successors, (1272), 901 states have internal predecessors, (1272), 255 states have call successors, (255), 45 states have call predecessors, (255), 46 states have return successors, (259), 254 states have call predecessors, (259), 252 states have call successors, (259) [2022-07-22 23:04:12,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1786 transitions. [2022-07-22 23:04:12,756 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1786 transitions. Word has length 73 [2022-07-22 23:04:12,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:04:12,756 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1786 transitions. [2022-07-22 23:04:12,757 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:04:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1786 transitions. [2022-07-22 23:04:12,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-22 23:04:12,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:04:12,759 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:04:12,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-22 23:04:12,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:04:12,979 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:04:12,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:04:12,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1872160802, now seen corresponding path program 1 times [2022-07-22 23:04:12,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:04:12,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431665906] [2022-07-22 23:04:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:04:12,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:04:12,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:04:12,985 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) [2022-07-22 23:04:12,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-22 23:04:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:04:15,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:04:15,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:04:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 23:04:15,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:04:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 23:04:16,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:04:16,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431665906] [2022-07-22 23:04:16,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431665906] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:04:16,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:04:16,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-22 23:04:16,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057983360] [2022-07-22 23:04:16,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:04:16,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:04:16,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:04:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:04:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:04:16,528 INFO L87 Difference]: Start difference. First operand 1190 states and 1786 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:04:20,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:04:23,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:04:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:04:23,428 INFO L93 Difference]: Finished difference Result 2377 states and 3580 transitions. [2022-07-22 23:04:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:04:24,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-07-22 23:04:24,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:04:24,287 INFO L225 Difference]: With dead ends: 2377 [2022-07-22 23:04:24,287 INFO L226 Difference]: Without dead ends: 1196 [2022-07-22 23:04:24,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:04:24,293 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 4 mSDsluCounter, 6776 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8473 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:04:24,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 8473 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-07-22 23:04:24,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-07-22 23:04:24,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2022-07-22 23:04:24,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 894 states have (on average 1.429530201342282) internal successors, (1278), 907 states have internal predecessors, (1278), 255 states have call successors, (255), 45 states have call predecessors, (255), 46 states have return successors, (259), 254 states have call predecessors, (259), 252 states have call successors, (259) [2022-07-22 23:04:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1792 transitions. [2022-07-22 23:04:24,326 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1792 transitions. Word has length 83 [2022-07-22 23:04:24,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:04:24,326 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1792 transitions. [2022-07-22 23:04:24,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:04:24,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1792 transitions. [2022-07-22 23:04:24,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 23:04:24,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:04:24,328 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:04:24,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-22 23:04:24,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:04:24,543 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:04:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:04:24,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1642384918, now seen corresponding path program 2 times [2022-07-22 23:04:24,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:04:24,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155545846] [2022-07-22 23:04:24,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:04:24,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:04:24,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:04:24,546 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) [2022-07-22 23:04:24,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-22 23:04:25,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:04:25,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:04:25,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:04:25,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:04:25,398 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-07-22 23:04:25,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:04:25,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:04:25,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155545846] [2022-07-22 23:04:25,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155545846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:04:25,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:04:25,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:04:25,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683909601] [2022-07-22 23:04:25,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:04:25,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:04:25,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:04:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:04:25,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:04:25,400 INFO L87 Difference]: Start difference. First operand 1196 states and 1792 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 23:04:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:04:25,915 INFO L93 Difference]: Finished difference Result 1208 states and 1806 transitions. [2022-07-22 23:04:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:04:25,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2022-07-22 23:04:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:04:25,925 INFO L225 Difference]: With dead ends: 1208 [2022-07-22 23:04:25,925 INFO L226 Difference]: Without dead ends: 1202 [2022-07-22 23:04:25,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:04:25,928 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 5 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3389 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:04:25,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3389 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 23:04:25,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-07-22 23:04:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1197. [2022-07-22 23:04:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 895 states have (on average 1.429050279329609) internal successors, (1279), 908 states have internal predecessors, (1279), 255 states have call successors, (255), 45 states have call predecessors, (255), 46 states have return successors, (259), 254 states have call predecessors, (259), 252 states have call successors, (259) [2022-07-22 23:04:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1793 transitions. [2022-07-22 23:04:25,964 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1793 transitions. Word has length 62 [2022-07-22 23:04:25,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:04:25,965 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1793 transitions. [2022-07-22 23:04:25,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 23:04:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1793 transitions. [2022-07-22 23:04:25,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 23:04:25,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:04:25,967 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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] [2022-07-22 23:04:25,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-22 23:04:26,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:04:26,181 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:04:26,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:04:26,182 INFO L85 PathProgramCache]: Analyzing trace with hash 765241419, now seen corresponding path program 1 times [2022-07-22 23:04:26,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:04:26,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303620096] [2022-07-22 23:04:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:04:26,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:04:26,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:04:26,185 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) [2022-07-22 23:04:26,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-22 23:04:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:04:26,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 23:04:26,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:04:38,305 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 2 proven. 190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 23:04:38,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:04:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 23:04:55,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:04:55,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303620096] [2022-07-22 23:04:55,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303620096] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:04:55,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:04:55,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-22 23:04:55,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101770445] [2022-07-22 23:04:55,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:04:55,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 23:04:55,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:04:55,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 23:04:55,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-07-22 23:04:55,553 INFO L87 Difference]: Start difference. First operand 1197 states and 1793 transitions. Second operand has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 23:05:44,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:05:44,045 INFO L93 Difference]: Finished difference Result 2400 states and 3606 transitions. [2022-07-22 23:05:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 23:05:44,046 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2022-07-22 23:05:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:05:44,053 INFO L225 Difference]: With dead ends: 2400 [2022-07-22 23:05:44,053 INFO L226 Difference]: Without dead ends: 1269 [2022-07-22 23:05:44,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 23:05:44,057 INFO L413 NwaCegarLoop]: 1746 mSDtfsCounter, 235 mSDsluCounter, 18951 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 20697 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:05:44,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 20697 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 34.9s Time] [2022-07-22 23:05:44,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-07-22 23:05:44,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1269. [2022-07-22 23:05:44,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 955 states have (on average 1.4146596858638742) internal successors, (1351), 968 states have internal predecessors, (1351), 267 states have call successors, (267), 45 states have call predecessors, (267), 46 states have return successors, (271), 266 states have call predecessors, (271), 264 states have call successors, (271) [2022-07-22 23:05:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1889 transitions. [2022-07-22 23:05:44,092 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1889 transitions. Word has length 66 [2022-07-22 23:05:44,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:05:44,092 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1889 transitions. [2022-07-22 23:05:44,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 23:05:44,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1889 transitions. [2022-07-22 23:05:44,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-22 23:05:44,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:05:44,098 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-22 23:05:44,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-22 23:05:44,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:05:44,314 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:05:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:05:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1186470200, now seen corresponding path program 2 times [2022-07-22 23:05:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:05:44,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003137337] [2022-07-22 23:05:44,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:05:44,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:05:44,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:05:44,318 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) [2022-07-22 23:05:44,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-22 23:05:46,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:05:46,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:05:46,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 2356 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:05:46,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:05:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 23:05:53,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:05:53,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:05:53,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003137337] [2022-07-22 23:05:53,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003137337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:05:53,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:05:53,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:05:53,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352219237] [2022-07-22 23:05:53,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:05:53,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:05:53,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:05:53,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:05:53,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:05:53,724 INFO L87 Difference]: Start difference. First operand 1269 states and 1889 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 23:05:53,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:05:53,939 INFO L93 Difference]: Finished difference Result 1271 states and 1890 transitions. [2022-07-22 23:05:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:05:53,940 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 81 [2022-07-22 23:05:53,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:05:53,946 INFO L225 Difference]: With dead ends: 1271 [2022-07-22 23:05:53,946 INFO L226 Difference]: Without dead ends: 1268 [2022-07-22 23:05:53,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:05:53,947 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 1630 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:05:53,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 1695 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:05:53,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2022-07-22 23:05:53,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1268. [2022-07-22 23:05:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 955 states have (on average 1.4136125654450262) internal successors, (1350), 967 states have internal predecessors, (1350), 266 states have call successors, (266), 45 states have call predecessors, (266), 46 states have return successors, (271), 266 states have call predecessors, (271), 264 states have call successors, (271) [2022-07-22 23:05:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1887 transitions. [2022-07-22 23:05:53,980 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1887 transitions. Word has length 81 [2022-07-22 23:05:53,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:05:53,981 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 1887 transitions. [2022-07-22 23:05:53,981 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 23:05:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1887 transitions. [2022-07-22 23:05:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 23:05:53,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:05:53,984 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-22 23:05:54,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-22 23:05:54,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:05:54,203 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:05:54,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:05:54,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1973741030, now seen corresponding path program 1 times [2022-07-22 23:05:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:05:54,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124630974] [2022-07-22 23:05:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:05:54,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:05:54,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:05:54,207 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) [2022-07-22 23:05:54,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-22 23:05:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:05:56,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 23:05:56,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:05:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 23:05:59,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:06:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 23:06:03,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:06:03,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124630974] [2022-07-22 23:06:03,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124630974] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:06:03,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:06:03,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-22 23:06:03,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545109933] [2022-07-22 23:06:03,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:06:03,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 23:06:03,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:06:03,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 23:06:03,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:06:03,353 INFO L87 Difference]: Start difference. First operand 1268 states and 1887 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:06:12,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:06:15,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:06:15,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:06:15,891 INFO L93 Difference]: Finished difference Result 2539 states and 3803 transitions. [2022-07-22 23:06:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 23:06:16,857 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 114 [2022-07-22 23:06:16,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:06:16,865 INFO L225 Difference]: With dead ends: 2539 [2022-07-22 23:06:16,865 INFO L226 Difference]: Without dead ends: 1280 [2022-07-22 23:06:16,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:06:16,871 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 10 mSDsluCounter, 10152 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11847 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:06:16,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11847 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2022-07-22 23:06:16,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-07-22 23:06:16,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1280. [2022-07-22 23:06:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 967 states have (on average 1.408479834539814) internal successors, (1362), 979 states have internal predecessors, (1362), 266 states have call successors, (266), 45 states have call predecessors, (266), 46 states have return successors, (271), 266 states have call predecessors, (271), 264 states have call successors, (271) [2022-07-22 23:06:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1899 transitions. [2022-07-22 23:06:16,908 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1899 transitions. Word has length 114 [2022-07-22 23:06:16,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:06:16,908 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1899 transitions. [2022-07-22 23:06:16,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:06:16,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1899 transitions. [2022-07-22 23:06:16,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 23:06:16,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:06:16,913 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 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] [2022-07-22 23:06:16,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-22 23:06:17,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:06:17,127 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:06:17,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:06:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1821949198, now seen corresponding path program 2 times [2022-07-22 23:06:17,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:06:17,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878130299] [2022-07-22 23:06:17,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:06:17,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:06:17,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:06:17,131 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) [2022-07-22 23:06:17,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-22 23:06:25,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:06:25,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:06:25,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 23:06:25,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:06:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 23:06:36,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:06:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 23:06:52,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:06:52,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878130299] [2022-07-22 23:06:52,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878130299] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:06:52,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:06:52,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-22 23:06:52,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707160517] [2022-07-22 23:06:52,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:06:52,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 23:06:52,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:06:52,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 23:06:52,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-07-22 23:06:52,607 INFO L87 Difference]: Start difference. First operand 1280 states and 1899 transitions. Second operand has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:07:25,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:07:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:07:25,632 INFO L93 Difference]: Finished difference Result 2575 states and 3845 transitions. [2022-07-22 23:07:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 23:07:26,553 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 126 [2022-07-22 23:07:26,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:07:26,559 INFO L225 Difference]: With dead ends: 2575 [2022-07-22 23:07:26,559 INFO L226 Difference]: Without dead ends: 1304 [2022-07-22 23:07:26,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 37.3s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 23:07:26,566 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 23 mSDsluCounter, 18612 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 20307 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:07:26,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 20307 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 285 Invalid, 1 Unknown, 0 Unchecked, 17.9s Time] [2022-07-22 23:07:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-07-22 23:07:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1304. [2022-07-22 23:07:26,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 991 states have (on average 1.3985872855701311) internal successors, (1386), 1003 states have internal predecessors, (1386), 266 states have call successors, (266), 45 states have call predecessors, (266), 46 states have return successors, (271), 266 states have call predecessors, (271), 264 states have call successors, (271) [2022-07-22 23:07:26,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1923 transitions. [2022-07-22 23:07:26,659 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1923 transitions. Word has length 126 [2022-07-22 23:07:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:07:26,659 INFO L495 AbstractCegarLoop]: Abstraction has 1304 states and 1923 transitions. [2022-07-22 23:07:26,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:07:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1923 transitions. [2022-07-22 23:07:26,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 23:07:26,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:07:26,670 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 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] [2022-07-22 23:07:26,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-22 23:07:26,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:07:26,871 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:07:26,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:07:26,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1205566287, now seen corresponding path program 2 times [2022-07-22 23:07:26,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:07:26,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992058922] [2022-07-22 23:07:26,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:07:26,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:07:26,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:07:26,873 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) [2022-07-22 23:07:26,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-22 23:07:27,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:07:27,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:07:27,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:07:27,599 INFO L286 TraceCheckSpWp]: Computing forward predicates...