./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 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-?-3598765 [2022-07-21 10:20:47,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 10:20:47,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 10:20:47,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 10:20:47,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 10:20:47,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 10:20:47,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 10:20:47,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 10:20:47,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 10:20:47,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 10:20:47,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 10:20:47,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 10:20:47,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 10:20:47,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 10:20:47,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 10:20:47,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 10:20:47,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 10:20:47,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 10:20:47,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 10:20:47,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 10:20:47,334 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 10:20:47,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 10:20:47,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 10:20:47,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 10:20:47,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 10:20:47,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 10:20:47,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 10:20:47,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 10:20:47,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 10:20:47,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 10:20:47,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 10:20:47,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 10:20:47,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 10:20:47,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 10:20:47,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 10:20:47,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 10:20:47,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 10:20:47,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 10:20:47,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 10:20:47,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 10:20:47,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 10:20:47,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 10:20:47,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 10:20:47,391 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 10:20:47,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 10:20:47,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 10:20:47,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 10:20:47,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 10:20:47,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 10:20:47,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 10:20:47,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 10:20:47,394 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 10:20:47,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 10:20:47,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 10:20:47,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 10:20:47,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 10:20:47,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 10:20:47,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 10:20:47,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 10:20:47,395 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 10:20:47,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 10:20:47,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 10:20:47,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 10:20:47,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 10:20:47,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:20:47,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 10:20:47,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 10:20:47,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 10:20:47,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 10:20:47,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 10:20:47,397 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 10:20:47,398 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 10:20:47,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 10:20:47,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2022-07-21 10:20:47,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 10:20:47,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 10:20:47,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 10:20:47,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 10:20:47,707 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 10:20:47,709 INFO L432 ainManager$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 [2022-07-21 10:20:47,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7286aaf23/83844bce42294a83a17e95a3b1c5ff48/FLAG2c703081f [2022-07-21 10:20:48,544 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 10:20:48,545 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 [2022-07-21 10:20:48,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7286aaf23/83844bce42294a83a17e95a3b1c5ff48/FLAG2c703081f [2022-07-21 10:20:48,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7286aaf23/83844bce42294a83a17e95a3b1c5ff48 [2022-07-21 10:20:48,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 10:20:48,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 10:20:48,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 10:20:48,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 10:20:48,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 10:20:48,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:20:48" (1/1) ... [2022-07-21 10:20:48,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5850527d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:48, skipping insertion in model container [2022-07-21 10:20:48,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:20:48" (1/1) ... [2022-07-21 10:20:48,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 10:20:48,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 10:20:50,015 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] [2022-07-21 10:20:50,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:20:50,071 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 10:20:50,213 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) [2022-07-21 10:20:50,221 INFO L158 Benchmark]: Toolchain (without parser) took 1478.21ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 37.6MB in the beginning and 37.4MB in the end (delta: 237.8kB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2022-07-21 10:20:50,223 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 65.0MB. Free memory was 47.1MB in the beginning and 47.0MB in the end (delta: 85.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 10:20:50,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1474.78ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 37.4MB in the beginning and 37.4MB in the end (delta: 43.1kB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2022-07-21 10:20:50,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 65.0MB. Free memory was 47.1MB in the beginning and 47.0MB in the end (delta: 85.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1474.78ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 37.4MB in the beginning and 37.4MB in the end (delta: 43.1kB). Peak memory consumption was 25.1MB. 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-?-3598765 [2022-07-21 10:20:51,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 10:20:51,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 10:20:52,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 10:20:52,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 10:20:52,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 10:20:52,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 10:20:52,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 10:20:52,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 10:20:52,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 10:20:52,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 10:20:52,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 10:20:52,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 10:20:52,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 10:20:52,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 10:20:52,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 10:20:52,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 10:20:52,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 10:20:52,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 10:20:52,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 10:20:52,065 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 10:20:52,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 10:20:52,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 10:20:52,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 10:20:52,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 10:20:52,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 10:20:52,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 10:20:52,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 10:20:52,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 10:20:52,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 10:20:52,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 10:20:52,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 10:20:52,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 10:20:52,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 10:20:52,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 10:20:52,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 10:20:52,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 10:20:52,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 10:20:52,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 10:20:52,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 10:20:52,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 10:20:52,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 10:20:52,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 10:20:52,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 10:20:52,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 10:20:52,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 10:20:52,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 10:20:52,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 10:20:52,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 10:20:52,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 10:20:52,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 10:20:52,127 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 10:20:52,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 10:20:52,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 10:20:52,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 10:20:52,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 10:20:52,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 10:20:52,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 10:20:52,136 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 10:20:52,136 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 10:20:52,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 10:20:52,136 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 10:20:52,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 10:20:52,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 10:20:52,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 10:20:52,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 10:20:52,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:20:52,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 10:20:52,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 10:20:52,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 10:20:52,138 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 10:20:52,139 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 10:20:52,139 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 10:20:52,139 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 10:20:52,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 10:20:52,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 10:20:52,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2022-07-21 10:20:52,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 10:20:52,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 10:20:52,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 10:20:52,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 10:20:52,496 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 10:20:52,498 INFO L432 ainManager$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 [2022-07-21 10:20:52,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a044139/1882c8ad7cd14739b3e08330d7e2c90f/FLAG93178dadb [2022-07-21 10:20:53,193 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 10:20:53,194 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 [2022-07-21 10:20:53,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a044139/1882c8ad7cd14739b3e08330d7e2c90f/FLAG93178dadb [2022-07-21 10:20:53,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a044139/1882c8ad7cd14739b3e08330d7e2c90f [2022-07-21 10:20:53,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 10:20:53,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 10:20:53,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 10:20:53,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 10:20:53,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 10:20:53,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:20:53" (1/1) ... [2022-07-21 10:20:53,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca7e825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:53, skipping insertion in model container [2022-07-21 10:20:53,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:20:53" (1/1) ... [2022-07-21 10:20:53,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 10:20:53,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 10:20:54,819 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] [2022-07-21 10:20:54,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:20:54,893 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 10:20:54,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 10:20:55,151 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] [2022-07-21 10:20:55,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:20:55,175 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 10:20:55,408 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] [2022-07-21 10:20:55,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:20:55,454 INFO L208 MainTranslator]: Completed translation [2022-07-21 10:20:55,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:55 WrapperNode [2022-07-21 10:20:55,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 10:20:55,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 10:20:55,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 10:20:55,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 10:20:55,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:55" (1/1) ... [2022-07-21 10:20:55,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:55" (1/1) ... [2022-07-21 10:20:55,668 INFO L137 Inliner]: procedures = 195, calls = 1464, calls flagged for inlining = 91, calls inlined = 88, statements flattened = 4028 [2022-07-21 10:20:55,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 10:20:55,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 10:20:55,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 10:20:55,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 10:20:55,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:55" (1/1) ... [2022-07-21 10:20:55,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:55" (1/1) ... [2022-07-21 10:20:55,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:55" (1/1) ... [2022-07-21 10:20:55,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:55" (1/1) ... [2022-07-21 10:20:55,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:55" (1/1) ... [2022-07-21 10:20:55,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:55" (1/1) ... [2022-07-21 10:20:55,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:55" (1/1) ... [2022-07-21 10:20:55,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 10:20:55,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 10:20:55,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 10:20:55,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 10:20:55,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:55" (1/1) ... [2022-07-21 10:20:55,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:20:55,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:20:55,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 10:20:55,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 10:20:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_sw [2022-07-21 10:20:55,983 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_sw [2022-07-21 10:20:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 10:20:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-07-21 10:20:55,983 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-07-21 10:20:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_recsrc2 [2022-07-21 10:20:55,983 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_recsrc2 [2022-07-21 10:20:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 10:20:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 10:20:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-21 10:20:55,984 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-21 10:20:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_input [2022-07-21 10:20:55,984 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_input [2022-07-21 10:20:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 10:20:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 10:20:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-07-21 10:20:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 10:20:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 10:20:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_vol [2022-07-21 10:20:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_vol [2022-07-21 10:20:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 10:20:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 10:20:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv2 [2022-07-21 10:20:55,986 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv2 [2022-07-21 10:20:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv1 [2022-07-21 10:20:55,986 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv1 [2022-07-21 10:20:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2022-07-21 10:20:55,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2022-07-21 10:20:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-07-21 10:20:55,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-07-21 10:20:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 10:20:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure mixer_slot_clear [2022-07-21 10:20:55,987 INFO L138 BoogieDeclarations]: Found implementation of procedure mixer_slot_clear [2022-07-21 10:20:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_ioctl1 [2022-07-21 10:20:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_ioctl1 [2022-07-21 10:20:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-07-21 10:20:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-07-21 10:20:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 10:20:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-21 10:20:55,989 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-21 10:20:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-07-21 10:20:55,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-07-21 10:20:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 10:20:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 10:20:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 10:20:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 10:20:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 10:20:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 10:20:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_test [2022-07-21 10:20:55,991 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_test [2022-07-21 10:20:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2022-07-21 10:20:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2022-07-21 10:20:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-21 10:20:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-21 10:20:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 10:20:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-21 10:20:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-21 10:20:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 10:20:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 10:20:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_open [2022-07-21 10:20:55,994 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_open [2022-07-21 10:20:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-21 10:20:55,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-21 10:20:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_file_remove [2022-07-21 10:20:55,994 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_file_remove [2022-07-21 10:20:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_find_numid [2022-07-21 10:20:55,995 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_find_numid [2022-07-21 10:20:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv [2022-07-21 10:20:55,996 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv [2022-07-21 10:20:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 10:20:55,996 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 10:20:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_test_id [2022-07-21 10:20:55,996 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_test_id [2022-07-21 10:20:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-21 10:20:55,996 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-21 10:20:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 10:20:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure snd_info_free_entry [2022-07-21 10:20:55,997 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_info_free_entry [2022-07-21 10:20:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-21 10:20:55,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-21 10:20:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 10:20:55,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 10:20:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-21 10:20:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-21 10:20:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_release [2022-07-21 10:20:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_release [2022-07-21 10:20:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 10:20:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2022-07-21 10:20:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-07-21 10:20:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-07-21 10:20:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 10:20:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 10:20:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 10:20:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_notify [2022-07-21 10:20:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_notify [2022-07-21 10:20:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 10:20:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 10:20:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-07-21 10:20:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-07-21 10:20:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-07-21 10:20:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-07-21 10:20:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_sw [2022-07-21 10:20:56,002 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_sw [2022-07-21 10:20:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure snd_oss_info_register [2022-07-21 10:20:56,002 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_oss_info_register [2022-07-21 10:20:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_vol [2022-07-21 10:20:56,003 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_vol [2022-07-21 10:20:56,003 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_notify_handler [2022-07-21 10:20:56,003 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_notify_handler [2022-07-21 10:20:56,003 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_dereference [2022-07-21 10:20:56,004 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_dereference [2022-07-21 10:20:56,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 10:20:56,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 10:20:56,498 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 10:20:56,500 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 10:21:22,441 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 10:21:22,472 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 10:21:22,473 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 10:21:22,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:21:22 BoogieIcfgContainer [2022-07-21 10:21:22,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 10:21:22,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 10:21:22,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 10:21:22,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 10:21:22,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:20:53" (1/3) ... [2022-07-21 10:21:22,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14054c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:21:22, skipping insertion in model container [2022-07-21 10:21:22,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:20:55" (2/3) ... [2022-07-21 10:21:22,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14054c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:21:22, skipping insertion in model container [2022-07-21 10:21:22,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:21:22" (3/3) ... [2022-07-21 10:21:22,492 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-07-21 10:21:22,506 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 10:21:22,506 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 10:21:22,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 10:21:22,612 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@3a65d25a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@342b0979 [2022-07-21 10:21:22,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 10:21:22,622 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) [2022-07-21 10:21:22,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 10:21:22,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:21:22,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:21:22,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:21:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:21:22,634 INFO L85 PathProgramCache]: Analyzing trace with hash 910515778, now seen corresponding path program 1 times [2022-07-21 10:21:22,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:21:22,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852343775] [2022-07-21 10:21:22,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:21:22,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:21:22,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:21:22,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:21:22,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 10:21:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:21:23,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:21:23,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:21:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:21:23,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:21:23,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:21:23,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852343775] [2022-07-21 10:21:23,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852343775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:21:23,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:21:23,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:21:23,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317194058] [2022-07-21 10:21:23,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:21:23,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:21:23,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:21:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:21:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:21:23,331 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) [2022-07-21 10:21:23,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:21:23,665 INFO L93 Difference]: Finished difference Result 2322 states and 3654 transitions. [2022-07-21 10:21:23,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:21:23,668 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 [2022-07-21 10:21:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:21:23,686 INFO L225 Difference]: With dead ends: 2322 [2022-07-21 10:21:23,687 INFO L226 Difference]: Without dead ends: 1132 [2022-07-21 10:21:23,700 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 [2022-07-21 10:21:23,703 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 [2022-07-21 10:21:23,704 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] [2022-07-21 10:21:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-07-21 10:21:23,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1127. [2022-07-21 10:21:23,802 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) [2022-07-21 10:21:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1702 transitions. [2022-07-21 10:21:23,814 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1702 transitions. Word has length 14 [2022-07-21 10:21:23,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:21:23,815 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1702 transitions. [2022-07-21 10:21:23,815 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) [2022-07-21 10:21:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1702 transitions. [2022-07-21 10:21:23,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 10:21:23,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:21:23,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:21:23,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 10:21:24,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:21:24,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:21:24,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:21:24,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1958805779, now seen corresponding path program 1 times [2022-07-21 10:21:24,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:21:24,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540889852] [2022-07-21 10:21:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:21:24,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:21:24,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:21:24,042 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:21:24,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 10:21:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:21:24,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 10:21:24,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:21:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:21:24,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 10:21:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:21:25,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:21:25,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540889852] [2022-07-21 10:21:25,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540889852] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 10:21:25,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 10:21:25,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-21 10:21:25,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713558643] [2022-07-21 10:21:25,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 10:21:25,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:21:25,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:21:25,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:21:25,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:21:25,114 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) [2022-07-21 10:21:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:21:25,799 INFO L93 Difference]: Finished difference Result 2260 states and 3415 transitions. [2022-07-21 10:21:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 10:21:25,800 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 [2022-07-21 10:21:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:21:25,809 INFO L225 Difference]: With dead ends: 2260 [2022-07-21 10:21:25,810 INFO L226 Difference]: Without dead ends: 1145 [2022-07-21 10:21:25,816 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 [2022-07-21 10:21:25,817 INFO L413 NwaCegarLoop]: 1703 mSDtfsCounter, 29 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 5096 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:21:25,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 5096 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 10:21:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-07-21 10:21:25,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1145. [2022-07-21 10:21:25,855 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) [2022-07-21 10:21:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1726 transitions. [2022-07-21 10:21:25,864 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1726 transitions. Word has length 18 [2022-07-21 10:21:25,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:21:25,865 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1726 transitions. [2022-07-21 10:21:25,865 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) [2022-07-21 10:21:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1726 transitions. [2022-07-21 10:21:25,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-21 10:21:25,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:21:25,867 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:21:25,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 10:21:26,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:21:26,085 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:21:26,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:21:26,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1947136018, now seen corresponding path program 2 times [2022-07-21 10:21:26,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:21:26,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688630379] [2022-07-21 10:21:26,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 10:21:26,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:21:26,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:21:26,091 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:21:26,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 10:21:26,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 10:21:26,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:21:26,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 10:21:26,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:21:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 10:21:26,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:21:26,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:21:26,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688630379] [2022-07-21 10:21:26,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688630379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:21:26,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:21:26,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:21:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325375477] [2022-07-21 10:21:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:21:26,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:21:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:21:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:21:26,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:21:26,718 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) [2022-07-21 10:21:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:21:26,944 INFO L93 Difference]: Finished difference Result 1150 states and 1730 transitions. [2022-07-21 10:21:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:21:26,945 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 [2022-07-21 10:21:26,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:21:26,952 INFO L225 Difference]: With dead ends: 1150 [2022-07-21 10:21:26,953 INFO L226 Difference]: Without dead ends: 1145 [2022-07-21 10:21:26,954 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 [2022-07-21 10:21:26,955 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 [2022-07-21 10:21:26,955 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] [2022-07-21 10:21:26,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-07-21 10:21:26,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1145. [2022-07-21 10:21:26,988 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) [2022-07-21 10:21:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1725 transitions. [2022-07-21 10:21:26,998 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1725 transitions. Word has length 30 [2022-07-21 10:21:26,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:21:26,999 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1725 transitions. [2022-07-21 10:21:26,999 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) [2022-07-21 10:21:26,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1725 transitions. [2022-07-21 10:21:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 10:21:27,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:21:27,002 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] [2022-07-21 10:21:27,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 10:21:27,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:21:27,215 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:21:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:21:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash -280593772, now seen corresponding path program 1 times [2022-07-21 10:21:27,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:21:27,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597117254] [2022-07-21 10:21:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:21:27,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:21:27,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:21:27,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:21:27,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 10:21:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:21:27,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 10:21:27,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:21:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:21:28,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 10:21:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 10:21:30,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:21:30,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597117254] [2022-07-21 10:21:30,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597117254] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 10:21:30,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 10:21:30,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-21 10:21:30,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127553121] [2022-07-21 10:21:30,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 10:21:30,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 10:21:30,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:21:30,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 10:21:30,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-21 10:21:30,020 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) [2022-07-21 10:21:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:21:33,535 INFO L93 Difference]: Finished difference Result 2296 states and 3464 transitions. [2022-07-21 10:21:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 10:21:33,536 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 [2022-07-21 10:21:33,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:21:33,544 INFO L225 Difference]: With dead ends: 2296 [2022-07-21 10:21:33,544 INFO L226 Difference]: Without dead ends: 1181 [2022-07-21 10:21:33,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-07-21 10:21:33,552 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 92 mSDsluCounter, 8526 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 10:21:33,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 10243 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 10:21:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-07-21 10:21:33,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2022-07-21 10:21:33,585 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) [2022-07-21 10:21:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1773 transitions. [2022-07-21 10:21:33,594 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1773 transitions. Word has length 38 [2022-07-21 10:21:33,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:21:33,595 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1773 transitions. [2022-07-21 10:21:33,595 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) [2022-07-21 10:21:33,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1773 transitions. [2022-07-21 10:21:33,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-21 10:21:33,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:21:33,598 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] [2022-07-21 10:21:33,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 10:21:33,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:21:33,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:21:33,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:21:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1417493872, now seen corresponding path program 1 times [2022-07-21 10:21:33,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:21:33,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711909966] [2022-07-21 10:21:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:21:33,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:21:33,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:21:33,822 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:21:33,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 10:21:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:21:35,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 10:21:35,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:21:36,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 10:21:36,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:21:36,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:21:36,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711909966] [2022-07-21 10:21:36,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711909966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:21:36,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:21:36,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:21:36,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183327366] [2022-07-21 10:21:36,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:21:36,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:21:36,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:21:36,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:21:36,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:21:36,034 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) [2022-07-21 10:21:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:21:36,213 INFO L93 Difference]: Finished difference Result 2355 states and 3557 transitions. [2022-07-21 10:21:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:21:36,228 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 [2022-07-21 10:21:36,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:21:36,238 INFO L225 Difference]: With dead ends: 2355 [2022-07-21 10:21:36,238 INFO L226 Difference]: Without dead ends: 1183 [2022-07-21 10:21:36,245 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 [2022-07-21 10:21:36,247 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 [2022-07-21 10:21:36,248 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] [2022-07-21 10:21:36,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-07-21 10:21:36,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1181. [2022-07-21 10:21:36,289 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) [2022-07-21 10:21:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1772 transitions. [2022-07-21 10:21:36,302 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1772 transitions. Word has length 55 [2022-07-21 10:21:36,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:21:36,303 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1772 transitions. [2022-07-21 10:21:36,303 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) [2022-07-21 10:21:36,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1772 transitions. [2022-07-21 10:21:36,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-21 10:21:36,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:21:36,307 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] [2022-07-21 10:21:36,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 10:21:36,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:21:36,527 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:21:36,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:21:36,528 INFO L85 PathProgramCache]: Analyzing trace with hash -967271630, now seen corresponding path program 1 times [2022-07-21 10:21:36,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:21:36,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079854247] [2022-07-21 10:21:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:21:36,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:21:36,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:21:36,534 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:21:36,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 10:21:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:21:38,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 2361 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 10:21:38,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:21:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 10:21:40,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:21:40,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:21:40,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079854247] [2022-07-21 10:21:40,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079854247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:21:40,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:21:40,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 10:21:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078141898] [2022-07-21 10:21:40,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:21:40,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 10:21:40,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:21:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 10:21:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:21:40,313 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) [2022-07-21 10:21:43,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:21:44,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:21:44,705 INFO L93 Difference]: Finished difference Result 2363 states and 3569 transitions. [2022-07-21 10:21:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 10:21:44,707 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 [2022-07-21 10:21:44,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:21:44,715 INFO L225 Difference]: With dead ends: 2363 [2022-07-21 10:21:44,716 INFO L226 Difference]: Without dead ends: 1191 [2022-07-21 10:21:44,722 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 [2022-07-21 10:21:44,723 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 5 mSDsluCounter, 10164 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s 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, 4.1s IncrementalHoareTripleChecker+Time [2022-07-21 10:21:44,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 11863 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-07-21 10:21:44,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-07-21 10:21:44,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1189. [2022-07-21 10:21:44,756 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) [2022-07-21 10:21:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1785 transitions. [2022-07-21 10:21:44,763 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1785 transitions. Word has length 70 [2022-07-21 10:21:44,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:21:44,764 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1785 transitions. [2022-07-21 10:21:44,764 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) [2022-07-21 10:21:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1785 transitions. [2022-07-21 10:21:44,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 10:21:44,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:21:44,767 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] [2022-07-21 10:21:44,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 10:21:44,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:21:44,988 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:21:44,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:21:44,988 INFO L85 PathProgramCache]: Analyzing trace with hash 857270872, now seen corresponding path program 1 times [2022-07-21 10:21:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:21:44,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730445157] [2022-07-21 10:21:44,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:21:44,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:21:44,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:21:44,993 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:21:44,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 10:21:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:21:47,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:21:47,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:21:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 10:21:47,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:21:47,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:21:47,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730445157] [2022-07-21 10:21:47,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730445157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:21:47,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:21:47,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:21:47,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293545697] [2022-07-21 10:21:47,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:21:47,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:21:47,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:21:47,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:21:47,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:21:47,575 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) [2022-07-21 10:21:50,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:21:50,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:21:50,081 INFO L93 Difference]: Finished difference Result 2371 states and 3572 transitions. [2022-07-21 10:21:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:21:50,927 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 [2022-07-21 10:21:50,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:21:50,935 INFO L225 Difference]: With dead ends: 2371 [2022-07-21 10:21:50,936 INFO L226 Difference]: Without dead ends: 1191 [2022-07-21 10:21:50,942 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 [2022-07-21 10:21:50,943 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 1 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:21:50,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3391 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 10:21:50,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-07-21 10:21:50,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1190. [2022-07-21 10:21:50,975 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) [2022-07-21 10:21:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1786 transitions. [2022-07-21 10:21:50,982 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1786 transitions. Word has length 73 [2022-07-21 10:21:50,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:21:50,982 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1786 transitions. [2022-07-21 10:21:50,983 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) [2022-07-21 10:21:50,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1786 transitions. [2022-07-21 10:21:50,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 10:21:50,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:21:50,985 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] [2022-07-21 10:21:51,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 10:21:51,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:21:51,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:21:51,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:21:51,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1872160802, now seen corresponding path program 1 times [2022-07-21 10:21:51,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:21:51,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996014309] [2022-07-21 10:21:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:21:51,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:21:51,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:21:51,203 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:21:51,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 10:21:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:21:53,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 10:21:53,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:21:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 10:21:54,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 10:21:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 10:21:54,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:21:54,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996014309] [2022-07-21 10:21:54,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996014309] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 10:21:54,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 10:21:54,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-21 10:21:54,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592704834] [2022-07-21 10:21:54,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 10:21:54,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:21:54,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:21:54,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:21:54,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:21:54,967 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) [2022-07-21 10:21:58,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:22:01,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:22:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:22:01,135 INFO L93 Difference]: Finished difference Result 2377 states and 3580 transitions. [2022-07-21 10:22:01,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 10:22:01,996 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 [2022-07-21 10:22:01,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:22:02,004 INFO L225 Difference]: With dead ends: 2377 [2022-07-21 10:22:02,005 INFO L226 Difference]: Without dead ends: 1196 [2022-07-21 10:22:02,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:22:02,012 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 4 mSDsluCounter, 6776 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s 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 [2022-07-21 10:22:02,013 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] [2022-07-21 10:22:02,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-07-21 10:22:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2022-07-21 10:22:02,044 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) [2022-07-21 10:22:02,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1792 transitions. [2022-07-21 10:22:02,050 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1792 transitions. Word has length 83 [2022-07-21 10:22:02,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:22:02,050 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1792 transitions. [2022-07-21 10:22:02,051 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) [2022-07-21 10:22:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1792 transitions. [2022-07-21 10:22:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 10:22:02,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:22:02,053 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] [2022-07-21 10:22:02,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-21 10:22:02,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:22:02,268 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:22:02,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:22:02,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1642384918, now seen corresponding path program 2 times [2022-07-21 10:22:02,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:22:02,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276823681] [2022-07-21 10:22:02,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 10:22:02,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:22:02,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:22:02,270 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:22:02,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 10:22:02,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 10:22:02,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:22:02,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:22:02,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:22:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-07-21 10:22:03,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:22:03,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:22:03,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276823681] [2022-07-21 10:22:03,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276823681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:22:03,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:22:03,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:22:03,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454812238] [2022-07-21 10:22:03,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:22:03,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:22:03,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:22:03,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:22:03,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:22:03,112 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) [2022-07-21 10:22:03,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:22:03,646 INFO L93 Difference]: Finished difference Result 1208 states and 1806 transitions. [2022-07-21 10:22:03,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:22:03,648 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 [2022-07-21 10:22:03,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:22:03,656 INFO L225 Difference]: With dead ends: 1208 [2022-07-21 10:22:03,656 INFO L226 Difference]: Without dead ends: 1202 [2022-07-21 10:22:03,657 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 [2022-07-21 10:22:03,659 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 5 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3389 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:22:03,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3389 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 10:22:03,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-07-21 10:22:03,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1197. [2022-07-21 10:22:03,695 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) [2022-07-21 10:22:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1793 transitions. [2022-07-21 10:22:03,701 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1793 transitions. Word has length 62 [2022-07-21 10:22:03,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:22:03,701 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1793 transitions. [2022-07-21 10:22:03,702 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) [2022-07-21 10:22:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1793 transitions. [2022-07-21 10:22:03,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 10:22:03,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:22:03,704 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] [2022-07-21 10:22:03,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-07-21 10:22:03,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:22:03,922 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:22:03,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:22:03,923 INFO L85 PathProgramCache]: Analyzing trace with hash 765241419, now seen corresponding path program 1 times [2022-07-21 10:22:03,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:22:03,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239993922] [2022-07-21 10:22:03,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:22:03,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:22:03,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:22:03,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:22:03,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 10:22:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:22:04,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 10:22:04,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:22:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 2 proven. 190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 10:22:14,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 10:22:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 10:22:30,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:22:30,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239993922] [2022-07-21 10:22:30,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239993922] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 10:22:30,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 10:22:30,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-21 10:22:30,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376702336] [2022-07-21 10:22:30,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 10:22:30,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 10:22:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:22:30,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 10:22:30,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-07-21 10:22:30,924 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) [2022-07-21 10:23:15,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:23:15,403 INFO L93 Difference]: Finished difference Result 2400 states and 3606 transitions. [2022-07-21 10:23:15,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 10:23:15,404 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 [2022-07-21 10:23:15,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:23:15,411 INFO L225 Difference]: With dead ends: 2400 [2022-07-21 10:23:15,411 INFO L226 Difference]: Without dead ends: 1269 [2022-07-21 10:23:15,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 10:23:15,417 INFO L413 NwaCegarLoop]: 1746 mSDtfsCounter, 235 mSDsluCounter, 18951 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s 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, 31.6s IncrementalHoareTripleChecker+Time [2022-07-21 10:23:15,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 20697 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 31.6s Time] [2022-07-21 10:23:15,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-07-21 10:23:15,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1269. [2022-07-21 10:23:15,447 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) [2022-07-21 10:23:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1889 transitions. [2022-07-21 10:23:15,452 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1889 transitions. Word has length 66 [2022-07-21 10:23:15,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:23:15,453 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1889 transitions. [2022-07-21 10:23:15,453 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) [2022-07-21 10:23:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1889 transitions. [2022-07-21 10:23:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-21 10:23:15,455 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:23:15,455 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] [2022-07-21 10:23:15,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 10:23:15,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:23:15,671 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:23:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:23:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1186470200, now seen corresponding path program 2 times [2022-07-21 10:23:15,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:23:15,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086931958] [2022-07-21 10:23:15,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 10:23:15,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:23:15,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:23:15,675 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:23:15,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 10:23:17,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 10:23:17,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:23:17,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2356 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:23:17,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:23:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 10:23:25,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:23:25,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:23:25,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086931958] [2022-07-21 10:23:25,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086931958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:23:25,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:23:25,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:23:25,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684312657] [2022-07-21 10:23:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:23:25,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:23:25,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:23:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:23:25,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:23:25,184 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) [2022-07-21 10:23:25,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:23:25,427 INFO L93 Difference]: Finished difference Result 1271 states and 1890 transitions. [2022-07-21 10:23:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:23:25,428 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 [2022-07-21 10:23:25,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:23:25,434 INFO L225 Difference]: With dead ends: 1271 [2022-07-21 10:23:25,434 INFO L226 Difference]: Without dead ends: 1268 [2022-07-21 10:23:25,435 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 [2022-07-21 10:23:25,435 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 [2022-07-21 10:23:25,436 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] [2022-07-21 10:23:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2022-07-21 10:23:25,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1268. [2022-07-21 10:23:25,467 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) [2022-07-21 10:23:25,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1887 transitions. [2022-07-21 10:23:25,472 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1887 transitions. Word has length 81 [2022-07-21 10:23:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:23:25,473 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 1887 transitions. [2022-07-21 10:23:25,473 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) [2022-07-21 10:23:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1887 transitions. [2022-07-21 10:23:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 10:23:25,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:23:25,477 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] [2022-07-21 10:23:25,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 10:23:25,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:23:25,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:23:25,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:23:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1973741030, now seen corresponding path program 1 times [2022-07-21 10:23:25,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:23:25,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832241989] [2022-07-21 10:23:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:23:25,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:23:25,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:23:25,699 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:23:25,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 10:23:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:23:28,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 10:23:28,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:23:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 10:23:30,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 10:23:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 10:23:34,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:23:34,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832241989] [2022-07-21 10:23:34,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832241989] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 10:23:34,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 10:23:34,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-21 10:23:34,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546127577] [2022-07-21 10:23:34,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 10:23:34,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 10:23:34,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:23:34,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 10:23:34,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-21 10:23:34,742 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) [2022-07-21 10:23:43,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:23:46,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:23:46,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:23:46,847 INFO L93 Difference]: Finished difference Result 2539 states and 3803 transitions. [2022-07-21 10:23:47,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 10:23:47,620 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 [2022-07-21 10:23:47,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:23:47,631 INFO L225 Difference]: With dead ends: 2539 [2022-07-21 10:23:47,631 INFO L226 Difference]: Without dead ends: 1280 [2022-07-21 10:23:47,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-07-21 10:23:47,641 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 10 mSDsluCounter, 10152 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s 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, 8.7s IncrementalHoareTripleChecker+Time [2022-07-21 10:23:47,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11847 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2022-07-21 10:23:47,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-07-21 10:23:47,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1280. [2022-07-21 10:23:47,680 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) [2022-07-21 10:23:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1899 transitions. [2022-07-21 10:23:47,688 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1899 transitions. Word has length 114 [2022-07-21 10:23:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:23:47,688 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1899 transitions. [2022-07-21 10:23:47,689 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) [2022-07-21 10:23:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1899 transitions. [2022-07-21 10:23:47,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-21 10:23:47,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:23:47,694 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] [2022-07-21 10:23:47,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 10:23:47,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:23:47,908 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:23:47,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:23:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1821949198, now seen corresponding path program 2 times [2022-07-21 10:23:47,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:23:47,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594943689] [2022-07-21 10:23:47,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 10:23:47,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:23:47,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:23:47,911 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:23:47,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 10:23:57,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 10:23:57,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:23:57,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 10:23:57,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:24:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 10:24:06,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 10:24:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 10:24:22,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:24:22,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594943689] [2022-07-21 10:24:22,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594943689] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 10:24:22,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 10:24:22,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-21 10:24:22,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234202248] [2022-07-21 10:24:22,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 10:24:22,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 10:24:22,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:24:22,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 10:24:22,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-07-21 10:24:22,540 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) [2022-07-21 10:24:53,377 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 [] [2022-07-21 10:24:53,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:24:53,493 INFO L93 Difference]: Finished difference Result 2575 states and 3845 transitions. [2022-07-21 10:24:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 10:24:54,431 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 [2022-07-21 10:24:54,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:24:54,437 INFO L225 Difference]: With dead ends: 2575 [2022-07-21 10:24:54,438 INFO L226 Difference]: Without dead ends: 1304 [2022-07-21 10:24:54,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 10:24:54,445 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 23 mSDsluCounter, 18612 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 20307 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-07-21 10:24:54,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 20307 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 285 Invalid, 1 Unknown, 0 Unchecked, 16.9s Time] [2022-07-21 10:24:54,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-07-21 10:24:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1304. [2022-07-21 10:24:54,484 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) [2022-07-21 10:24:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1923 transitions. [2022-07-21 10:24:54,490 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1923 transitions. Word has length 126 [2022-07-21 10:24:54,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:24:54,491 INFO L495 AbstractCegarLoop]: Abstraction has 1304 states and 1923 transitions. [2022-07-21 10:24:54,491 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) [2022-07-21 10:24:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1923 transitions. [2022-07-21 10:24:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 10:24:54,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:24:54,497 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] [2022-07-21 10:24:54,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 10:24:54,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:24:54,712 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:24:54,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:24:54,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1205566287, now seen corresponding path program 2 times [2022-07-21 10:24:54,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:24:54,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173416516] [2022-07-21 10:24:54,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 10:24:54,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:24:54,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:24:54,714 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:24:54,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 10:24:55,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 10:24:55,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:24:55,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 10:24:55,453 INFO L286 TraceCheckSpWp]: Computing forward predicates...