./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 f4b24e32 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-?-f4b24e3 [2022-07-13 23:26:48,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 23:26:48,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 23:26:48,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 23:26:48,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 23:26:48,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 23:26:48,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 23:26:48,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 23:26:48,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 23:26:48,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 23:26:48,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 23:26:48,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 23:26:48,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 23:26:48,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 23:26:48,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 23:26:48,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 23:26:48,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 23:26:48,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 23:26:48,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 23:26:48,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 23:26:48,567 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 23:26:48,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 23:26:48,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 23:26:48,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 23:26:48,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 23:26:48,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 23:26:48,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 23:26:48,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 23:26:48,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 23:26:48,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 23:26:48,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 23:26:48,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 23:26:48,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 23:26:48,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 23:26:48,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 23:26:48,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 23:26:48,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 23:26:48,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 23:26:48,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 23:26:48,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 23:26:48,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 23:26:48,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 23:26:48,588 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 23:26:48,622 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 23:26:48,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 23:26:48,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 23:26:48,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 23:26:48,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 23:26:48,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 23:26:48,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 23:26:48,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 23:26:48,625 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 23:26:48,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 23:26:48,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 23:26:48,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 23:26:48,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 23:26:48,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 23:26:48,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 23:26:48,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 23:26:48,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 23:26:48,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 23:26:48,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 23:26:48,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 23:26:48,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 23:26:48,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:26:48,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 23:26:48,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 23:26:48,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 23:26:48,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 23:26:48,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 23:26:48,631 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 23:26:48,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 23:26:48,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 23:26:48,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2022-07-13 23:26:48,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 23:26:48,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 23:26:48,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 23:26:48,891 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 23:26:48,891 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 23:26:48,892 INFO L432 ainManager$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 [2022-07-13 23:26:48,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04bcf9a9c/4cc3dc03e400459d963436debf0194dd/FLAG113603e46 [2022-07-13 23:26:49,540 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 23:26:49,541 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 [2022-07-13 23:26:49,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04bcf9a9c/4cc3dc03e400459d963436debf0194dd/FLAG113603e46 [2022-07-13 23:26:49,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04bcf9a9c/4cc3dc03e400459d963436debf0194dd [2022-07-13 23:26:49,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 23:26:49,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 23:26:49,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 23:26:49,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 23:26:49,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 23:26:49,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:26:49" (1/1) ... [2022-07-13 23:26:49,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713ccf62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:49, skipping insertion in model container [2022-07-13 23:26:49,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:26:49" (1/1) ... [2022-07-13 23:26:49,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 23:26:49,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 23:26:50,756 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] [2022-07-13 23:26:50,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:26:50,815 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 23:26:50,913 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) [2022-07-13 23:26:50,922 INFO L158 Benchmark]: Toolchain (without parser) took 1194.45ms. Allocated memory was 98.6MB in the beginning and 136.3MB in the end (delta: 37.7MB). Free memory was 58.8MB in the beginning and 75.0MB in the end (delta: -16.2MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2022-07-13 23:26:50,924 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 52.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 23:26:50,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1192.76ms. Allocated memory was 98.6MB in the beginning and 136.3MB in the end (delta: 37.7MB). Free memory was 58.6MB in the beginning and 75.0MB in the end (delta: -16.4MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2022-07-13 23:26:50,927 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 98.6MB. Free memory is still 52.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1192.76ms. Allocated memory was 98.6MB in the beginning and 136.3MB in the end (delta: 37.7MB). Free memory was 58.6MB in the beginning and 75.0MB in the end (delta: -16.4MB). Peak memory consumption was 34.0MB. 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-?-f4b24e3 [2022-07-13 23:26:52,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 23:26:52,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 23:26:52,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 23:26:52,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 23:26:52,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 23:26:52,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 23:26:52,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 23:26:52,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 23:26:52,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 23:26:52,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 23:26:52,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 23:26:52,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 23:26:52,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 23:26:52,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 23:26:52,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 23:26:52,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 23:26:52,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 23:26:52,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 23:26:52,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 23:26:52,720 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 23:26:52,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 23:26:52,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 23:26:52,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 23:26:52,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 23:26:52,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 23:26:52,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 23:26:52,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 23:26:52,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 23:26:52,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 23:26:52,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 23:26:52,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 23:26:52,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 23:26:52,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 23:26:52,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 23:26:52,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 23:26:52,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 23:26:52,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 23:26:52,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 23:26:52,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 23:26:52,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 23:26:52,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 23:26:52,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-13 23:26:52,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 23:26:52,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 23:26:52,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 23:26:52,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 23:26:52,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 23:26:52,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 23:26:52,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 23:26:52,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 23:26:52,774 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 23:26:52,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 23:26:52,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 23:26:52,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 23:26:52,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 23:26:52,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 23:26:52,776 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 23:26:52,776 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 23:26:52,776 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 23:26:52,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 23:26:52,776 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 23:26:52,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 23:26:52,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 23:26:52,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 23:26:52,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 23:26:52,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:26:52,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 23:26:52,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 23:26:52,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 23:26:52,778 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 23:26:52,779 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 23:26:52,779 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 23:26:52,779 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 23:26:52,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 23:26:52,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 23:26:52,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2022-07-13 23:26:53,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 23:26:53,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 23:26:53,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 23:26:53,131 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 23:26:53,132 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 23:26:53,133 INFO L432 ainManager$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 [2022-07-13 23:26:53,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee32a06f9/f25720ea734841cda081ecbac11a8c0e/FLAG83ea38022 [2022-07-13 23:26:53,904 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 23:26:53,904 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 [2022-07-13 23:26:53,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee32a06f9/f25720ea734841cda081ecbac11a8c0e/FLAG83ea38022 [2022-07-13 23:26:54,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee32a06f9/f25720ea734841cda081ecbac11a8c0e [2022-07-13 23:26:54,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 23:26:54,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 23:26:54,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 23:26:54,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 23:26:54,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 23:26:54,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:26:54" (1/1) ... [2022-07-13 23:26:54,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156cad7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:54, skipping insertion in model container [2022-07-13 23:26:54,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:26:54" (1/1) ... [2022-07-13 23:26:54,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 23:26:54,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 23:26:55,363 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] [2022-07-13 23:26:55,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:26:55,421 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-13 23:26:55,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 23:26:55,647 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] [2022-07-13 23:26:55,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:26:55,668 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 23:26:55,889 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] [2022-07-13 23:26:55,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:26:55,948 INFO L208 MainTranslator]: Completed translation [2022-07-13 23:26:55,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:55 WrapperNode [2022-07-13 23:26:55,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 23:26:55,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 23:26:55,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 23:26:55,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 23:26:55,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:55" (1/1) ... [2022-07-13 23:26:56,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:55" (1/1) ... [2022-07-13 23:26:56,190 INFO L137 Inliner]: procedures = 195, calls = 1464, calls flagged for inlining = 91, calls inlined = 88, statements flattened = 4028 [2022-07-13 23:26:56,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 23:26:56,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 23:26:56,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 23:26:56,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 23:26:56,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:55" (1/1) ... [2022-07-13 23:26:56,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:55" (1/1) ... [2022-07-13 23:26:56,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:55" (1/1) ... [2022-07-13 23:26:56,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:55" (1/1) ... [2022-07-13 23:26:56,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:55" (1/1) ... [2022-07-13 23:26:56,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:55" (1/1) ... [2022-07-13 23:26:56,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:55" (1/1) ... [2022-07-13 23:26:56,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 23:26:56,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 23:26:56,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 23:26:56,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 23:26:56,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:55" (1/1) ... [2022-07-13 23:26:56,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:26:56,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:26:56,472 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) [2022-07-13 23:26:56,489 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 [2022-07-13 23:26:56,511 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_sw [2022-07-13 23:26:56,512 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_sw [2022-07-13 23:26:56,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-13 23:26:56,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-07-13 23:26:56,512 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-07-13 23:26:56,512 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_recsrc2 [2022-07-13 23:26:56,512 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_recsrc2 [2022-07-13 23:26:56,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-13 23:26:56,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-13 23:26:56,513 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-13 23:26:56,513 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-13 23:26:56,513 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_input [2022-07-13 23:26:56,513 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_input [2022-07-13 23:26:56,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-13 23:26:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-13 23:26:56,514 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-07-13 23:26:56,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-13 23:26:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-13 23:26:56,514 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_vol [2022-07-13 23:26:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_vol [2022-07-13 23:26:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-13 23:26:56,515 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-13 23:26:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv2 [2022-07-13 23:26:56,515 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv2 [2022-07-13 23:26:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv1 [2022-07-13 23:26:56,516 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv1 [2022-07-13 23:26:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2022-07-13 23:26:56,516 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2022-07-13 23:26:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-07-13 23:26:56,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-07-13 23:26:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 23:26:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure mixer_slot_clear [2022-07-13 23:26:56,517 INFO L138 BoogieDeclarations]: Found implementation of procedure mixer_slot_clear [2022-07-13 23:26:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_ioctl1 [2022-07-13 23:26:56,517 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_ioctl1 [2022-07-13 23:26:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-07-13 23:26:56,517 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-07-13 23:26:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 23:26:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-13 23:26:56,518 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-13 23:26:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-07-13 23:26:56,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-07-13 23:26:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-13 23:26:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-13 23:26:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-13 23:26:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 23:26:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-13 23:26:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 23:26:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_test [2022-07-13 23:26:56,520 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_test [2022-07-13 23:26:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2022-07-13 23:26:56,520 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2022-07-13 23:26:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-13 23:26:56,520 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-13 23:26:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 23:26:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-13 23:26:56,521 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-13 23:26:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-13 23:26:56,521 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-13 23:26:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_open [2022-07-13 23:26:56,521 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_open [2022-07-13 23:26:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-13 23:26:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-13 23:26:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_file_remove [2022-07-13 23:26:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_file_remove [2022-07-13 23:26:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_find_numid [2022-07-13 23:26:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_find_numid [2022-07-13 23:26:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv [2022-07-13 23:26:56,523 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv [2022-07-13 23:26:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-13 23:26:56,523 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-13 23:26:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_test_id [2022-07-13 23:26:56,523 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_test_id [2022-07-13 23:26:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-13 23:26:56,524 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-13 23:26:56,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-13 23:26:56,524 INFO L130 BoogieDeclarations]: Found specification of procedure snd_info_free_entry [2022-07-13 23:26:56,524 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_info_free_entry [2022-07-13 23:26:56,524 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-13 23:26:56,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-13 23:26:56,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-13 23:26:56,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-13 23:26:56,525 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-13 23:26:56,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-13 23:26:56,525 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_release [2022-07-13 23:26:56,525 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_release [2022-07-13 23:26:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 23:26:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2022-07-13 23:26:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-07-13 23:26:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-07-13 23:26:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 23:26:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 23:26:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-13 23:26:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_notify [2022-07-13 23:26:56,527 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_notify [2022-07-13 23:26:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-13 23:26:56,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-13 23:26:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-07-13 23:26:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-07-13 23:26:56,528 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-07-13 23:26:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-07-13 23:26:56,528 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_sw [2022-07-13 23:26:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_sw [2022-07-13 23:26:56,528 INFO L130 BoogieDeclarations]: Found specification of procedure snd_oss_info_register [2022-07-13 23:26:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_oss_info_register [2022-07-13 23:26:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_vol [2022-07-13 23:26:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_vol [2022-07-13 23:26:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_notify_handler [2022-07-13 23:26:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_notify_handler [2022-07-13 23:26:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_dereference [2022-07-13 23:26:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_dereference [2022-07-13 23:26:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 23:26:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 23:26:57,002 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 23:26:57,004 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 23:27:22,156 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 23:27:22,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 23:27:22,171 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 23:27:22,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:27:22 BoogieIcfgContainer [2022-07-13 23:27:22,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 23:27:22,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 23:27:22,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 23:27:22,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 23:27:22,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:26:54" (1/3) ... [2022-07-13 23:27:22,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326ed122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:27:22, skipping insertion in model container [2022-07-13 23:27:22,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:26:55" (2/3) ... [2022-07-13 23:27:22,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326ed122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:27:22, skipping insertion in model container [2022-07-13 23:27:22,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:27:22" (3/3) ... [2022-07-13 23:27:22,180 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-07-13 23:27:22,192 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 23:27:22,192 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 23:27:22,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 23:27:22,258 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@4f827d46, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@f4ac2f5 [2022-07-13 23:27:22,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 23:27:22,266 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) [2022-07-13 23:27:22,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 23:27:22,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:22,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:27:22,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:22,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:22,277 INFO L85 PathProgramCache]: Analyzing trace with hash 910515778, now seen corresponding path program 1 times [2022-07-13 23:27:22,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:27:22,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117223691] [2022-07-13 23:27:22,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:22,291 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:27:22,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:27:22,295 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) [2022-07-13 23:27:22,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 23:27:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:22,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 23:27:22,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:27:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:27:22,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:27:22,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:27:22,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117223691] [2022-07-13 23:27:22,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117223691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:27:22,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:27:22,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 23:27:22,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472796353] [2022-07-13 23:27:22,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:27:22,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:27:22,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:27:22,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:27:22,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:27:22,868 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) [2022-07-13 23:27:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:27:23,163 INFO L93 Difference]: Finished difference Result 2322 states and 3654 transitions. [2022-07-13 23:27:23,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:27:23,167 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 [2022-07-13 23:27:23,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:27:23,185 INFO L225 Difference]: With dead ends: 2322 [2022-07-13 23:27:23,186 INFO L226 Difference]: Without dead ends: 1132 [2022-07-13 23:27:23,208 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 [2022-07-13 23:27:23,212 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 [2022-07-13 23:27:23,212 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] [2022-07-13 23:27:23,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-07-13 23:27:23,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1127. [2022-07-13 23:27:23,314 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) [2022-07-13 23:27:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1702 transitions. [2022-07-13 23:27:23,326 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1702 transitions. Word has length 14 [2022-07-13 23:27:23,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:27:23,326 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1702 transitions. [2022-07-13 23:27:23,327 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) [2022-07-13 23:27:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1702 transitions. [2022-07-13 23:27:23,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 23:27:23,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:23,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:27:23,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-13 23:27:23,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:27:23,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:23,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1958805779, now seen corresponding path program 1 times [2022-07-13 23:27:23,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:27:23,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360152015] [2022-07-13 23:27:23,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:23,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:27:23,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:27:23,547 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) [2022-07-13 23:27:23,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 23:27:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:23,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 23:27:23,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:27:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:27:24,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 23:27:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:27:24,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:27:24,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360152015] [2022-07-13 23:27:24,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360152015] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 23:27:24,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 23:27:24,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-13 23:27:24,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030797680] [2022-07-13 23:27:24,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 23:27:24,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:27:24,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:27:24,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:27:24,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:27:24,504 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) [2022-07-13 23:27:25,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:27:25,172 INFO L93 Difference]: Finished difference Result 2260 states and 3415 transitions. [2022-07-13 23:27:25,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 23:27:25,173 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 [2022-07-13 23:27:25,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:27:25,181 INFO L225 Difference]: With dead ends: 2260 [2022-07-13 23:27:25,182 INFO L226 Difference]: Without dead ends: 1145 [2022-07-13 23:27:25,187 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 [2022-07-13 23:27:25,188 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 23:27:25,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 5096 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 23:27:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-07-13 23:27:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1145. [2022-07-13 23:27:25,224 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) [2022-07-13 23:27:25,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1726 transitions. [2022-07-13 23:27:25,231 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1726 transitions. Word has length 18 [2022-07-13 23:27:25,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:27:25,232 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1726 transitions. [2022-07-13 23:27:25,232 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) [2022-07-13 23:27:25,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1726 transitions. [2022-07-13 23:27:25,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 23:27:25,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:25,234 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:27:25,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 23:27:25,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:27:25,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1947136018, now seen corresponding path program 2 times [2022-07-13 23:27:25,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:27:25,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555964687] [2022-07-13 23:27:25,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 23:27:25,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:27:25,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:27:25,463 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) [2022-07-13 23:27:25,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 23:27:25,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 23:27:25,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 23:27:25,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 23:27:25,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:27:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 23:27:26,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:27:26,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:27:26,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555964687] [2022-07-13 23:27:26,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555964687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:27:26,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:27:26,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:27:26,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854149110] [2022-07-13 23:27:26,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:27:26,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:27:26,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:27:26,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:27:26,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:27:26,070 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) [2022-07-13 23:27:26,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:27:26,290 INFO L93 Difference]: Finished difference Result 1150 states and 1730 transitions. [2022-07-13 23:27:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:27:26,291 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 [2022-07-13 23:27:26,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:27:26,298 INFO L225 Difference]: With dead ends: 1150 [2022-07-13 23:27:26,298 INFO L226 Difference]: Without dead ends: 1145 [2022-07-13 23:27:26,299 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 [2022-07-13 23:27:26,301 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 [2022-07-13 23:27:26,302 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] [2022-07-13 23:27:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-07-13 23:27:26,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1145. [2022-07-13 23:27:26,341 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) [2022-07-13 23:27:26,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1725 transitions. [2022-07-13 23:27:26,349 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1725 transitions. Word has length 30 [2022-07-13 23:27:26,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:27:26,349 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1725 transitions. [2022-07-13 23:27:26,350 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) [2022-07-13 23:27:26,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1725 transitions. [2022-07-13 23:27:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 23:27:26,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:26,357 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] [2022-07-13 23:27:26,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-13 23:27:26,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:27:26,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:26,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash -280593772, now seen corresponding path program 1 times [2022-07-13 23:27:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:27:26,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106294367] [2022-07-13 23:27:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:26,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:27:26,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:27:26,575 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) [2022-07-13 23:27:26,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-13 23:27:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:26,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 23:27:26,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:27:27,905 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:27:27,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 23:27:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 23:27:29,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:27:29,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106294367] [2022-07-13 23:27:29,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106294367] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 23:27:29,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 23:27:29,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-13 23:27:29,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847854450] [2022-07-13 23:27:29,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 23:27:29,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 23:27:29,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:27:29,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 23:27:29,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-13 23:27:29,125 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) [2022-07-13 23:27:32,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:27:32,420 INFO L93 Difference]: Finished difference Result 2296 states and 3464 transitions. [2022-07-13 23:27:32,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 23:27:32,421 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 [2022-07-13 23:27:32,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:27:32,428 INFO L225 Difference]: With dead ends: 2296 [2022-07-13 23:27:32,428 INFO L226 Difference]: Without dead ends: 1181 [2022-07-13 23:27:32,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-07-13 23:27:32,434 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 [2022-07-13 23:27:32,434 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] [2022-07-13 23:27:32,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-07-13 23:27:32,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2022-07-13 23:27:32,463 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) [2022-07-13 23:27:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1773 transitions. [2022-07-13 23:27:32,470 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1773 transitions. Word has length 38 [2022-07-13 23:27:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:27:32,471 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1773 transitions. [2022-07-13 23:27:32,471 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) [2022-07-13 23:27:32,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1773 transitions. [2022-07-13 23:27:32,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 23:27:32,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:32,475 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] [2022-07-13 23:27:32,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-13 23:27:32,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:27:32,676 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:32,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:32,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1417493872, now seen corresponding path program 1 times [2022-07-13 23:27:32,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:27:32,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013144431] [2022-07-13 23:27:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:32,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:27:32,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:27:32,679 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) [2022-07-13 23:27:32,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-13 23:27:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:34,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 23:27:34,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:27:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 23:27:34,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:27:34,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:27:34,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013144431] [2022-07-13 23:27:34,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013144431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:27:34,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:27:34,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 23:27:34,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565597719] [2022-07-13 23:27:34,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:27:34,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:27:34,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:27:34,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:27:34,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:27:34,730 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) [2022-07-13 23:27:34,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:27:34,903 INFO L93 Difference]: Finished difference Result 2355 states and 3557 transitions. [2022-07-13 23:27:34,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:27:34,918 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 [2022-07-13 23:27:34,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:27:34,927 INFO L225 Difference]: With dead ends: 2355 [2022-07-13 23:27:34,927 INFO L226 Difference]: Without dead ends: 1183 [2022-07-13 23:27:34,933 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 [2022-07-13 23:27:34,934 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 [2022-07-13 23:27:34,934 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] [2022-07-13 23:27:34,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-07-13 23:27:34,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1181. [2022-07-13 23:27:34,968 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) [2022-07-13 23:27:34,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1772 transitions. [2022-07-13 23:27:34,975 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1772 transitions. Word has length 55 [2022-07-13 23:27:34,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:27:34,976 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1772 transitions. [2022-07-13 23:27:34,976 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) [2022-07-13 23:27:34,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1772 transitions. [2022-07-13 23:27:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 23:27:34,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:34,979 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] [2022-07-13 23:27:35,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-13 23:27:35,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:27:35,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:35,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:35,196 INFO L85 PathProgramCache]: Analyzing trace with hash -967271630, now seen corresponding path program 1 times [2022-07-13 23:27:35,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:27:35,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120803077] [2022-07-13 23:27:35,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:35,199 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:27:35,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:27:35,201 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) [2022-07-13 23:27:35,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-13 23:27:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:37,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2361 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 23:27:37,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:27:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 23:27:38,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:27:38,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:27:38,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120803077] [2022-07-13 23:27:38,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120803077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:27:38,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:27:38,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 23:27:38,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466534988] [2022-07-13 23:27:38,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:27:38,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 23:27:38,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:27:38,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 23:27:38,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 23:27:38,771 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) [2022-07-13 23:27:41,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:27:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:27:43,080 INFO L93 Difference]: Finished difference Result 2363 states and 3569 transitions. [2022-07-13 23:27:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 23:27:43,081 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 [2022-07-13 23:27:43,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:27:43,089 INFO L225 Difference]: With dead ends: 2363 [2022-07-13 23:27:43,089 INFO L226 Difference]: Without dead ends: 1191 [2022-07-13 23:27:43,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:27:43,096 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 5 mSDsluCounter, 10164 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11863 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:27:43,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 11863 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-07-13 23:27:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-07-13 23:27:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1189. [2022-07-13 23:27:43,180 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) [2022-07-13 23:27:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1785 transitions. [2022-07-13 23:27:43,186 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1785 transitions. Word has length 70 [2022-07-13 23:27:43,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:27:43,187 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1785 transitions. [2022-07-13 23:27:43,187 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) [2022-07-13 23:27:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1785 transitions. [2022-07-13 23:27:43,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 23:27:43,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:43,191 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] [2022-07-13 23:27:43,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-13 23:27:43,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:27:43,412 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:43,413 INFO L85 PathProgramCache]: Analyzing trace with hash 857270872, now seen corresponding path program 1 times [2022-07-13 23:27:43,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:27:43,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589427563] [2022-07-13 23:27:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:43,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:27:43,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:27:43,416 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) [2022-07-13 23:27:43,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-13 23:27:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:45,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 23:27:45,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:27:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 23:27:45,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:27:45,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:27:45,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589427563] [2022-07-13 23:27:45,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589427563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:27:45,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:27:45,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 23:27:45,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456148330] [2022-07-13 23:27:45,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:27:45,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:27:45,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:27:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:27:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:27:45,761 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) [2022-07-13 23:27:48,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:27:48,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:27:48,971 INFO L93 Difference]: Finished difference Result 2371 states and 3572 transitions. [2022-07-13 23:27:49,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:27:49,926 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 [2022-07-13 23:27:49,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:27:49,934 INFO L225 Difference]: With dead ends: 2371 [2022-07-13 23:27:49,934 INFO L226 Difference]: Without dead ends: 1191 [2022-07-13 23:27:49,941 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 [2022-07-13 23:27:49,942 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 1 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:27:49,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3391 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 23:27:49,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-07-13 23:27:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1190. [2022-07-13 23:27:49,977 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) [2022-07-13 23:27:49,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1786 transitions. [2022-07-13 23:27:49,983 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1786 transitions. Word has length 73 [2022-07-13 23:27:49,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:27:49,984 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1786 transitions. [2022-07-13 23:27:49,984 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) [2022-07-13 23:27:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1786 transitions. [2022-07-13 23:27:49,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-13 23:27:49,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:49,987 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] [2022-07-13 23:27:50,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-13 23:27:50,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:27:50,208 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:50,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:50,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1872160802, now seen corresponding path program 1 times [2022-07-13 23:27:50,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:27:50,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175891407] [2022-07-13 23:27:50,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:50,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:27:50,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:27:50,211 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) [2022-07-13 23:27:50,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-13 23:27:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:52,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 23:27:52,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:27:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 23:27:53,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 23:27:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 23:27:54,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:27:54,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175891407] [2022-07-13 23:27:54,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175891407] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 23:27:54,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 23:27:54,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-13 23:27:54,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25608154] [2022-07-13 23:27:54,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 23:27:54,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:27:54,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:27:54,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:27:54,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:27:54,068 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) [2022-07-13 23:27:57,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:28:00,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:28:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:28:00,302 INFO L93 Difference]: Finished difference Result 2377 states and 3580 transitions. [2022-07-13 23:28:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 23:28:01,244 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 [2022-07-13 23:28:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:28:01,252 INFO L225 Difference]: With dead ends: 2377 [2022-07-13 23:28:01,252 INFO L226 Difference]: Without dead ends: 1196 [2022-07-13 23:28:01,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-13 23:28:01,258 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 4 mSDsluCounter, 6776 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s 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, 5.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:28:01,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 8473 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-07-13 23:28:01,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-07-13 23:28:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2022-07-13 23:28:01,287 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) [2022-07-13 23:28:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1792 transitions. [2022-07-13 23:28:01,292 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1792 transitions. Word has length 83 [2022-07-13 23:28:01,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:28:01,293 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1792 transitions. [2022-07-13 23:28:01,293 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) [2022-07-13 23:28:01,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1792 transitions. [2022-07-13 23:28:01,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 23:28:01,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:28:01,295 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] [2022-07-13 23:28:01,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-13 23:28:01,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:28:01,516 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:28:01,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:28:01,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1642384918, now seen corresponding path program 2 times [2022-07-13 23:28:01,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:28:01,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404958621] [2022-07-13 23:28:01,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 23:28:01,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:28:01,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:28:01,518 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) [2022-07-13 23:28:01,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-13 23:28:02,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 23:28:02,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 23:28:02,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 23:28:02,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:28:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-07-13 23:28:02,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:28:02,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:28:02,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404958621] [2022-07-13 23:28:02,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404958621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:28:02,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:28:02,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 23:28:02,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585364143] [2022-07-13 23:28:02,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:28:02,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:28:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:28:02,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:28:02,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:28:02,361 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) [2022-07-13 23:28:02,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:28:02,832 INFO L93 Difference]: Finished difference Result 1208 states and 1806 transitions. [2022-07-13 23:28:02,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:28:02,833 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 [2022-07-13 23:28:02,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:28:02,840 INFO L225 Difference]: With dead ends: 1208 [2022-07-13 23:28:02,840 INFO L226 Difference]: Without dead ends: 1202 [2022-07-13 23:28:02,840 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 [2022-07-13 23:28:02,841 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 5 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 23:28:02,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3389 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 23:28:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-07-13 23:28:02,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1197. [2022-07-13 23:28:02,890 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) [2022-07-13 23:28:02,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1793 transitions. [2022-07-13 23:28:02,895 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1793 transitions. Word has length 62 [2022-07-13 23:28:02,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:28:02,895 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1793 transitions. [2022-07-13 23:28:02,895 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) [2022-07-13 23:28:02,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1793 transitions. [2022-07-13 23:28:02,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 23:28:02,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:28:02,898 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] [2022-07-13 23:28:02,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-13 23:28:03,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:28:03,115 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:28:03,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:28:03,116 INFO L85 PathProgramCache]: Analyzing trace with hash 765241419, now seen corresponding path program 1 times [2022-07-13 23:28:03,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:28:03,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935712794] [2022-07-13 23:28:03,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:28:03,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:28:03,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:28:03,119 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) [2022-07-13 23:28:03,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-13 23:28:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:28:03,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 23:28:03,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:28:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 2 proven. 190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 23:28:15,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 23:28:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 23:28:32,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:28:32,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935712794] [2022-07-13 23:28:32,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935712794] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 23:28:32,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 23:28:32,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-13 23:28:32,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135718596] [2022-07-13 23:28:32,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 23:28:32,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 23:28:32,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:28:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 23:28:32,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-07-13 23:28:32,740 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) [2022-07-13 23:29:24,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:29:24,003 INFO L93 Difference]: Finished difference Result 2400 states and 3606 transitions. [2022-07-13 23:29:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 23:29:24,004 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 [2022-07-13 23:29:24,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:29:24,012 INFO L225 Difference]: With dead ends: 2400 [2022-07-13 23:29:24,012 INFO L226 Difference]: Without dead ends: 1269 [2022-07-13 23:29:24,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 23:29:24,018 INFO L413 NwaCegarLoop]: 1746 mSDtfsCounter, 235 mSDsluCounter, 18951 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.4s 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, 36.6s IncrementalHoareTripleChecker+Time [2022-07-13 23:29:24,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 20697 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 36.6s Time] [2022-07-13 23:29:24,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-07-13 23:29:24,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1269. [2022-07-13 23:29:24,055 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) [2022-07-13 23:29:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1889 transitions. [2022-07-13 23:29:24,060 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1889 transitions. Word has length 66 [2022-07-13 23:29:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:29:24,061 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1889 transitions. [2022-07-13 23:29:24,061 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) [2022-07-13 23:29:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1889 transitions. [2022-07-13 23:29:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-13 23:29:24,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:29:24,068 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] [2022-07-13 23:29:24,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-13 23:29:24,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:29:24,282 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:29:24,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:29:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1186470200, now seen corresponding path program 2 times [2022-07-13 23:29:24,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:29:24,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320368236] [2022-07-13 23:29:24,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 23:29:24,285 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:29:24,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:29:24,288 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) [2022-07-13 23:29:24,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-13 23:29:26,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 23:29:26,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 23:29:26,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 2356 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 23:29:26,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:29:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-13 23:29:34,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:29:34,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:29:34,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320368236] [2022-07-13 23:29:34,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320368236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:29:34,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:29:34,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 23:29:34,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775306739] [2022-07-13 23:29:34,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:29:34,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:29:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:29:34,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:29:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:29:34,436 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) [2022-07-13 23:29:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:29:34,729 INFO L93 Difference]: Finished difference Result 1271 states and 1890 transitions. [2022-07-13 23:29:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:29:34,730 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 [2022-07-13 23:29:34,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:29:34,736 INFO L225 Difference]: With dead ends: 1271 [2022-07-13 23:29:34,736 INFO L226 Difference]: Without dead ends: 1268 [2022-07-13 23:29:34,737 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 [2022-07-13 23:29:34,737 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 [2022-07-13 23:29:34,738 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] [2022-07-13 23:29:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2022-07-13 23:29:34,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1268. [2022-07-13 23:29:34,770 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) [2022-07-13 23:29:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1887 transitions. [2022-07-13 23:29:34,776 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1887 transitions. Word has length 81 [2022-07-13 23:29:34,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:29:34,776 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 1887 transitions. [2022-07-13 23:29:34,776 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) [2022-07-13 23:29:34,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1887 transitions. [2022-07-13 23:29:34,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 23:29:34,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:29:34,781 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] [2022-07-13 23:29:34,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-07-13 23:29:34,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:29:34,995 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:29:34,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:29:34,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1973741030, now seen corresponding path program 1 times [2022-07-13 23:29:34,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:29:34,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854482083] [2022-07-13 23:29:34,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:29:34,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:29:34,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:29:35,000 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) [2022-07-13 23:29:35,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-13 23:29:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:29:37,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 23:29:37,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:29:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 23:29:40,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 23:29:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 23:29:44,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:29:44,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854482083] [2022-07-13 23:29:44,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854482083] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 23:29:44,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 23:29:44,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-13 23:29:44,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320768554] [2022-07-13 23:29:44,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 23:29:44,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 23:29:44,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:29:44,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 23:29:44,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-13 23:29:44,843 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) [2022-07-13 23:29:54,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:29:57,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:29:57,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:29:57,543 INFO L93 Difference]: Finished difference Result 2539 states and 3803 transitions. [2022-07-13 23:29:58,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 23:29:58,438 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 [2022-07-13 23:29:58,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:29:58,445 INFO L225 Difference]: With dead ends: 2539 [2022-07-13 23:29:58,445 INFO L226 Difference]: Without dead ends: 1280 [2022-07-13 23:29:58,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-07-13 23:29:58,453 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 10 mSDsluCounter, 10152 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s 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 [2022-07-13 23:29:58,454 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] [2022-07-13 23:29:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-07-13 23:29:58,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1280. [2022-07-13 23:29:58,488 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) [2022-07-13 23:29:58,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1899 transitions. [2022-07-13 23:29:58,494 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1899 transitions. Word has length 114 [2022-07-13 23:29:58,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:29:58,494 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1899 transitions. [2022-07-13 23:29:58,495 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) [2022-07-13 23:29:58,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1899 transitions. [2022-07-13 23:29:58,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-13 23:29:58,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:29:58,499 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] [2022-07-13 23:29:58,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-13 23:29:58,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:29:58,719 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:29:58,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:29:58,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1821949198, now seen corresponding path program 2 times [2022-07-13 23:29:58,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:29:58,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620757816] [2022-07-13 23:29:58,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 23:29:58,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:29:58,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:29:58,723 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) [2022-07-13 23:29:58,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-13 23:30:07,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 23:30:07,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 23:30:07,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 23:30:08,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:30:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 23:30:18,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 23:30:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 23:30:35,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 23:30:35,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620757816] [2022-07-13 23:30:35,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620757816] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 23:30:35,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 23:30:35,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-13 23:30:35,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732200266] [2022-07-13 23:30:35,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 23:30:35,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 23:30:35,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 23:30:35,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 23:30:35,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-07-13 23:30:35,509 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) [2022-07-13 23:31:08,322 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 [] [2022-07-13 23:31:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:31:08,388 INFO L93 Difference]: Finished difference Result 2575 states and 3845 transitions. [2022-07-13 23:31:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 23:31:09,256 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 [2022-07-13 23:31:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:31:09,263 INFO L225 Difference]: With dead ends: 2575 [2022-07-13 23:31:09,263 INFO L226 Difference]: Without dead ends: 1304 [2022-07-13 23:31:09,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 37.8s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 23:31:09,270 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 23 mSDsluCounter, 18612 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s 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, 17.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:31:09,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 20307 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 285 Invalid, 1 Unknown, 0 Unchecked, 17.8s Time] [2022-07-13 23:31:09,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-07-13 23:31:09,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1304. [2022-07-13 23:31:09,352 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) [2022-07-13 23:31:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1923 transitions. [2022-07-13 23:31:09,358 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1923 transitions. Word has length 126 [2022-07-13 23:31:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:31:09,358 INFO L495 AbstractCegarLoop]: Abstraction has 1304 states and 1923 transitions. [2022-07-13 23:31:09,359 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) [2022-07-13 23:31:09,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1923 transitions. [2022-07-13 23:31:09,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 23:31:09,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:31:09,364 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] [2022-07-13 23:31:09,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-13 23:31:09,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 23:31:09,583 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:31:09,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:31:09,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1205566287, now seen corresponding path program 2 times [2022-07-13 23:31:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 23:31:09,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25614719] [2022-07-13 23:31:09,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 23:31:09,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 23:31:09,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 23:31:09,586 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) [2022-07-13 23:31:09,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-13 23:31:10,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 23:31:10,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 23:31:10,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 23:31:10,327 INFO L286 TraceCheckSpWp]: Computing forward predicates...