./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 01:55:20,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 01:55:20,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 01:55:20,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 01:55:20,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 01:55:20,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 01:55:20,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 01:55:20,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 01:55:20,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 01:55:20,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 01:55:20,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 01:55:20,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 01:55:20,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 01:55:20,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 01:55:20,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 01:55:20,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 01:55:20,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 01:55:20,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 01:55:20,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 01:55:20,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 01:55:20,349 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 01:55:20,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 01:55:20,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 01:55:20,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 01:55:20,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 01:55:20,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 01:55:20,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 01:55:20,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 01:55:20,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 01:55:20,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 01:55:20,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 01:55:20,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 01:55:20,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 01:55:20,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 01:55:20,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 01:55:20,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 01:55:20,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 01:55:20,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 01:55:20,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 01:55:20,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 01:55:20,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 01:55:20,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 01:55:20,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-23 01:55:20,394 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 01:55:20,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 01:55:20,395 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 01:55:20,395 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 01:55:20,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 01:55:20,396 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 01:55:20,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 01:55:20,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 01:55:20,397 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 01:55:20,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 01:55:20,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 01:55:20,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 01:55:20,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 01:55:20,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 01:55:20,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 01:55:20,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 01:55:20,398 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 01:55:20,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 01:55:20,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 01:55:20,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 01:55:20,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 01:55:20,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 01:55:20,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 01:55:20,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 01:55:20,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 01:55:20,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 01:55:20,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 01:55:20,400 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 01:55:20,400 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 01:55:20,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 01:55:20,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2022-07-23 01:55:20,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 01:55:20,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 01:55:20,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 01:55:20,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 01:55:20,632 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 01:55:20,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-23 01:55:20,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c9f9233/f61e5cda94bc4843bc985b297a6cf391/FLAG45714cc02 [2022-07-23 01:55:21,315 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 01:55:21,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-23 01:55:21,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c9f9233/f61e5cda94bc4843bc985b297a6cf391/FLAG45714cc02 [2022-07-23 01:55:21,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c9f9233/f61e5cda94bc4843bc985b297a6cf391 [2022-07-23 01:55:21,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 01:55:21,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 01:55:21,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 01:55:21,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 01:55:21,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 01:55:21,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:55:21" (1/1) ... [2022-07-23 01:55:21,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f905b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:21, skipping insertion in model container [2022-07-23 01:55:21,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:55:21" (1/1) ... [2022-07-23 01:55:21,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 01:55:21,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 01:55:22,856 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-07-23 01:55:22,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:55:22,922 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 01:55:23,049 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1650) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-23 01:55:23,056 INFO L158 Benchmark]: Toolchain (without parser) took 1346.11ms. Allocated memory was 115.3MB in the beginning and 163.6MB in the end (delta: 48.2MB). Free memory was 79.3MB in the beginning and 106.3MB in the end (delta: -27.0MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2022-07-23 01:55:23,056 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 01:55:23,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1338.79ms. Allocated memory was 115.3MB in the beginning and 163.6MB in the end (delta: 48.2MB). Free memory was 79.1MB in the beginning and 106.3MB in the end (delta: -27.2MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2022-07-23 01:55:23,059 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 92.3MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1338.79ms. Allocated memory was 115.3MB in the beginning and 163.6MB in the end (delta: 48.2MB). Free memory was 79.1MB in the beginning and 106.3MB in the end (delta: -27.2MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 01:55:24,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 01:55:24,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 01:55:24,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 01:55:24,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 01:55:24,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 01:55:24,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 01:55:24,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 01:55:24,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 01:55:24,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 01:55:24,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 01:55:24,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 01:55:24,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 01:55:24,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 01:55:24,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 01:55:24,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 01:55:24,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 01:55:24,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 01:55:24,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 01:55:24,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 01:55:24,866 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 01:55:24,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 01:55:24,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 01:55:24,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 01:55:24,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 01:55:24,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 01:55:24,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 01:55:24,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 01:55:24,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 01:55:24,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 01:55:24,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 01:55:24,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 01:55:24,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 01:55:24,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 01:55:24,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 01:55:24,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 01:55:24,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 01:55:24,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 01:55:24,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 01:55:24,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 01:55:24,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 01:55:24,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 01:55:24,895 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-23 01:55:24,922 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 01:55:24,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 01:55:24,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 01:55:24,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 01:55:24,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 01:55:24,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 01:55:24,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 01:55:24,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 01:55:24,925 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 01:55:24,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 01:55:24,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 01:55:24,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 01:55:24,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 01:55:24,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 01:55:24,927 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 01:55:24,928 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 01:55:24,928 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 01:55:24,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 01:55:24,928 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 01:55:24,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 01:55:24,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 01:55:24,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 01:55:24,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 01:55:24,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 01:55:24,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 01:55:24,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 01:55:24,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 01:55:24,930 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 01:55:24,930 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 01:55:24,930 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 01:55:24,930 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 01:55:24,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 01:55:24,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 01:55:24,931 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2022-07-23 01:55:25,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 01:55:25,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 01:55:25,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 01:55:25,247 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 01:55:25,248 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 01:55:25,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-23 01:55:25,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021b70284/cfb31f4453a74079b3977a7372f18490/FLAG3fd2a6410 [2022-07-23 01:55:25,950 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 01:55:25,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-23 01:55:25,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021b70284/cfb31f4453a74079b3977a7372f18490/FLAG3fd2a6410 [2022-07-23 01:55:26,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021b70284/cfb31f4453a74079b3977a7372f18490 [2022-07-23 01:55:26,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 01:55:26,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 01:55:26,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 01:55:26,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 01:55:26,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 01:55:26,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:55:26" (1/1) ... [2022-07-23 01:55:26,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7a672c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:26, skipping insertion in model container [2022-07-23 01:55:26,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:55:26" (1/1) ... [2022-07-23 01:55:26,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 01:55:26,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 01:55:27,521 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-07-23 01:55:27,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:55:27,594 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 01:55:27,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 01:55:27,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-07-23 01:55:27,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:55:27,823 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 01:55:28,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-07-23 01:55:28,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:55:28,207 INFO L208 MainTranslator]: Completed translation [2022-07-23 01:55:28,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:28 WrapperNode [2022-07-23 01:55:28,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 01:55:28,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 01:55:28,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 01:55:28,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 01:55:28,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:28" (1/1) ... [2022-07-23 01:55:28,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:28" (1/1) ... [2022-07-23 01:55:28,386 INFO L137 Inliner]: procedures = 220, calls = 1417, calls flagged for inlining = 89, calls inlined = 83, statements flattened = 3216 [2022-07-23 01:55:28,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 01:55:28,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 01:55:28,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 01:55:28,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 01:55:28,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:28" (1/1) ... [2022-07-23 01:55:28,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:28" (1/1) ... [2022-07-23 01:55:28,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:28" (1/1) ... [2022-07-23 01:55:28,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:28" (1/1) ... [2022-07-23 01:55:28,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:28" (1/1) ... [2022-07-23 01:55:28,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:28" (1/1) ... [2022-07-23 01:55:28,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:28" (1/1) ... [2022-07-23 01:55:28,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 01:55:28,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 01:55:28,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 01:55:28,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 01:55:28,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:28" (1/1) ... [2022-07-23 01:55:28,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 01:55:28,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 01:55:28,606 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) [2022-07-23 01:55:28,622 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 [2022-07-23 01:55:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-23 01:55:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-23 01:55:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-23 01:55:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-23 01:55:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2022-07-23 01:55:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2022-07-23 01:55:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 01:55:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-23 01:55:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-23 01:55:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-23 01:55:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-23 01:55:28,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-23 01:55:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-23 01:55:28,634 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-23 01:55:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-07-23 01:55:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-07-23 01:55:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2022-07-23 01:55:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2022-07-23 01:55:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-23 01:55:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-23 01:55:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-23 01:55:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-23 01:55:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-07-23 01:55:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-07-23 01:55:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-23 01:55:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-23 01:55:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-23 01:55:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-23 01:55:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2022-07-23 01:55:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2022-07-23 01:55:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-07-23 01:55:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-07-23 01:55:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-23 01:55:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-23 01:55:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-23 01:55:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-23 01:55:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2022-07-23 01:55:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2022-07-23 01:55:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-23 01:55:28,638 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-23 01:55:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2022-07-23 01:55:28,638 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2022-07-23 01:55:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 01:55:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-23 01:55:28,638 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-23 01:55:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-07-23 01:55:28,638 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-07-23 01:55:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2022-07-23 01:55:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2022-07-23 01:55:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 01:55:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-07-23 01:55:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-07-23 01:55:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-07-23 01:55:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-07-23 01:55:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-23 01:55:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-23 01:55:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2022-07-23 01:55:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2022-07-23 01:55:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-23 01:55:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-23 01:55:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2022-07-23 01:55:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2022-07-23 01:55:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-23 01:55:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-23 01:55:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-23 01:55:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 01:55:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 01:55:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-23 01:55:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-23 01:55:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-23 01:55:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-23 01:55:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-23 01:55:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2022-07-23 01:55:28,642 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2022-07-23 01:55:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2022-07-23 01:55:28,642 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2022-07-23 01:55:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-23 01:55:28,642 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-23 01:55:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-07-23 01:55:28,642 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-07-23 01:55:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-23 01:55:28,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-23 01:55:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2022-07-23 01:55:28,643 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2022-07-23 01:55:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-23 01:55:28,643 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-23 01:55:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-23 01:55:28,643 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-23 01:55:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2022-07-23 01:55:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2022-07-23 01:55:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-23 01:55:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-23 01:55:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2022-07-23 01:55:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2022-07-23 01:55:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2022-07-23 01:55:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2022-07-23 01:55:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2022-07-23 01:55:28,645 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2022-07-23 01:55:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-23 01:55:28,645 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-23 01:55:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-23 01:55:28,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-23 01:55:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-23 01:55:28,645 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-23 01:55:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-23 01:55:28,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-23 01:55:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2022-07-23 01:55:28,646 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2022-07-23 01:55:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-07-23 01:55:28,646 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-07-23 01:55:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-07-23 01:55:28,646 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-07-23 01:55:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2022-07-23 01:55:28,646 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2022-07-23 01:55:28,647 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2022-07-23 01:55:28,647 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2022-07-23 01:55:28,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-23 01:55:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-23 01:55:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-23 01:55:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-23 01:55:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-23 01:55:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-23 01:55:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-23 01:55:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-23 01:55:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2022-07-23 01:55:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2022-07-23 01:55:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 01:55:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 01:55:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 01:55:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-23 01:55:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-23 01:55:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-23 01:55:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-23 01:55:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-23 01:55:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-07-23 01:55:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-07-23 01:55:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2022-07-23 01:55:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2022-07-23 01:55:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-23 01:55:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-23 01:55:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2022-07-23 01:55:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2022-07-23 01:55:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2022-07-23 01:55:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2022-07-23 01:55:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-07-23 01:55:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-07-23 01:55:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2022-07-23 01:55:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2022-07-23 01:55:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-23 01:55:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-23 01:55:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-07-23 01:55:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-07-23 01:55:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2022-07-23 01:55:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2022-07-23 01:55:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2022-07-23 01:55:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2022-07-23 01:55:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2022-07-23 01:55:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2022-07-23 01:55:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-23 01:55:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2022-07-23 01:55:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2022-07-23 01:55:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-23 01:55:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-23 01:55:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 01:55:28,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 01:55:29,036 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 01:55:29,038 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 01:55:29,661 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-23 01:55:44,670 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 01:55:44,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 01:55:44,681 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-23 01:55:44,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:55:44 BoogieIcfgContainer [2022-07-23 01:55:44,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 01:55:44,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 01:55:44,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 01:55:44,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 01:55:44,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:55:26" (1/3) ... [2022-07-23 01:55:44,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8628736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:55:44, skipping insertion in model container [2022-07-23 01:55:44,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:55:28" (2/3) ... [2022-07-23 01:55:44,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8628736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:55:44, skipping insertion in model container [2022-07-23 01:55:44,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:55:44" (3/3) ... [2022-07-23 01:55:44,690 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-23 01:55:44,700 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 01:55:44,701 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-23 01:55:44,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 01:55:44,774 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@5b999575, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70d80f86 [2022-07-23 01:55:44,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-23 01:55:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 1052 states, 741 states have (on average 1.3454790823211875) internal successors, (997), 774 states have internal predecessors, (997), 243 states have call successors, (243), 67 states have call predecessors, (243), 66 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2022-07-23 01:55:44,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-23 01:55:44,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:55:44,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:55:44,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:55:44,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:55:44,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1866951613, now seen corresponding path program 1 times [2022-07-23 01:55:44,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:55:44,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142688409] [2022-07-23 01:55:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:55:44,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:55:44,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:55:44,842 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) [2022-07-23 01:55:44,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 01:55:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:55:45,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 01:55:45,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:55:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-23 01:55:45,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:55:45,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:55:45,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142688409] [2022-07-23 01:55:45,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142688409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:55:45,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:55:45,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 01:55:45,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719843723] [2022-07-23 01:55:45,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:55:45,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 01:55:45,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:55:46,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 01:55:46,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:55:46,019 INFO L87 Difference]: Start difference. First operand has 1052 states, 741 states have (on average 1.3454790823211875) internal successors, (997), 774 states have internal predecessors, (997), 243 states have call successors, (243), 67 states have call predecessors, (243), 66 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-23 01:55:46,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:55:46,330 INFO L93 Difference]: Finished difference Result 2102 states and 3025 transitions. [2022-07-23 01:55:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 01:55:46,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 98 [2022-07-23 01:55:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:55:46,358 INFO L225 Difference]: With dead ends: 2102 [2022-07-23 01:55:46,358 INFO L226 Difference]: Without dead ends: 1037 [2022-07-23 01:55:46,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-23 01:55:46,374 INFO L413 NwaCegarLoop]: 1472 mSDtfsCounter, 346 mSDsluCounter, 3991 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 5463 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 01:55:46,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 5463 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 01:55:46,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-07-23 01:55:46,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1037. [2022-07-23 01:55:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 733 states have (on average 1.3369713506139154) internal successors, (980), 759 states have internal predecessors, (980), 238 states have call successors, (238), 66 states have call predecessors, (238), 65 states have return successors, (237), 229 states have call predecessors, (237), 237 states have call successors, (237) [2022-07-23 01:55:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1455 transitions. [2022-07-23 01:55:46,490 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1455 transitions. Word has length 98 [2022-07-23 01:55:46,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:55:46,492 INFO L495 AbstractCegarLoop]: Abstraction has 1037 states and 1455 transitions. [2022-07-23 01:55:46,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-23 01:55:46,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1455 transitions. [2022-07-23 01:55:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-23 01:55:46,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:55:46,500 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:55:46,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-23 01:55:46,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:55:46,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:55:46,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:55:46,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2076110020, now seen corresponding path program 1 times [2022-07-23 01:55:46,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:55:46,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948263733] [2022-07-23 01:55:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:55:46,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:55:46,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:55:46,721 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) [2022-07-23 01:55:46,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 01:55:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:55:47,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 01:55:47,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:55:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-23 01:55:47,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:55:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-23 01:55:48,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:55:48,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948263733] [2022-07-23 01:55:48,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948263733] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:55:48,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:55:48,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-07-23 01:55:48,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738162622] [2022-07-23 01:55:48,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:55:48,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 01:55:48,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:55:48,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 01:55:48,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-23 01:55:48,297 INFO L87 Difference]: Start difference. First operand 1037 states and 1455 transitions. Second operand has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 9 states have internal predecessors, (57), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-23 01:55:48,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:55:48,744 INFO L93 Difference]: Finished difference Result 2067 states and 2905 transitions. [2022-07-23 01:55:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 01:55:48,744 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 9 states have internal predecessors, (57), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) Word has length 99 [2022-07-23 01:55:48,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:55:48,758 INFO L225 Difference]: With dead ends: 2067 [2022-07-23 01:55:48,758 INFO L226 Difference]: Without dead ends: 1038 [2022-07-23 01:55:48,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-23 01:55:48,763 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 663 mSDsluCounter, 8291 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 9743 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 01:55:48,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 9743 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 01:55:48,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-07-23 01:55:48,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2022-07-23 01:55:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 734 states have (on average 1.3365122615803815) internal successors, (981), 760 states have internal predecessors, (981), 238 states have call successors, (238), 66 states have call predecessors, (238), 65 states have return successors, (237), 229 states have call predecessors, (237), 237 states have call successors, (237) [2022-07-23 01:55:48,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1456 transitions. [2022-07-23 01:55:48,818 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1456 transitions. Word has length 99 [2022-07-23 01:55:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:55:48,819 INFO L495 AbstractCegarLoop]: Abstraction has 1038 states and 1456 transitions. [2022-07-23 01:55:48,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 9 states have internal predecessors, (57), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-23 01:55:48,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1456 transitions. [2022-07-23 01:55:48,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-23 01:55:48,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:55:48,821 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:55:48,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-23 01:55:49,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:55:49,043 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:55:49,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:55:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1535666967, now seen corresponding path program 1 times [2022-07-23 01:55:49,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:55:49,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709061374] [2022-07-23 01:55:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:55:49,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:55:49,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:55:49,047 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) [2022-07-23 01:55:49,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 01:55:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:55:50,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 01:55:50,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:55:50,318 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-23 01:55:50,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:55:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-23 01:55:51,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:55:51,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709061374] [2022-07-23 01:55:51,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709061374] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:55:51,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:55:51,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-23 01:55:51,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372088472] [2022-07-23 01:55:51,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:55:51,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 01:55:51,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:55:51,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 01:55:51,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-23 01:55:51,054 INFO L87 Difference]: Start difference. First operand 1038 states and 1456 transitions. Second operand has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-23 01:55:51,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:55:51,397 INFO L93 Difference]: Finished difference Result 2069 states and 2907 transitions. [2022-07-23 01:55:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 01:55:51,398 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) Word has length 101 [2022-07-23 01:55:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:55:51,404 INFO L225 Difference]: With dead ends: 2069 [2022-07-23 01:55:51,404 INFO L226 Difference]: Without dead ends: 1039 [2022-07-23 01:55:51,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-23 01:55:51,411 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 336 mSDsluCounter, 7888 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 9340 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:55:51,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 9340 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 01:55:51,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2022-07-23 01:55:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2022-07-23 01:55:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 735 states have (on average 1.3360544217687076) internal successors, (982), 761 states have internal predecessors, (982), 238 states have call successors, (238), 66 states have call predecessors, (238), 65 states have return successors, (237), 229 states have call predecessors, (237), 237 states have call successors, (237) [2022-07-23 01:55:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1457 transitions. [2022-07-23 01:55:51,441 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1457 transitions. Word has length 101 [2022-07-23 01:55:51,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:55:51,444 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1457 transitions. [2022-07-23 01:55:51,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-23 01:55:51,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1457 transitions. [2022-07-23 01:55:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-23 01:55:51,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:55:51,451 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:55:51,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-23 01:55:51,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:55:51,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:55:51,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:55:51,672 INFO L85 PathProgramCache]: Analyzing trace with hash -892147740, now seen corresponding path program 2 times [2022-07-23 01:55:51,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:55:51,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208124750] [2022-07-23 01:55:51,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:55:51,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:55:51,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:55:51,676 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) [2022-07-23 01:55:51,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 01:55:52,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:55:52,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:55:52,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:55:52,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:55:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-23 01:55:52,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:55:52,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:55:52,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208124750] [2022-07-23 01:55:52,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208124750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:55:52,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:55:52,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:55:52,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480047058] [2022-07-23 01:55:52,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:55:52,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:55:52,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:55:52,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:55:52,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:55:52,682 INFO L87 Difference]: Start difference. First operand 1039 states and 1457 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-23 01:55:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:55:52,911 INFO L93 Difference]: Finished difference Result 3073 states and 4372 transitions. [2022-07-23 01:55:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:55:52,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2022-07-23 01:55:52,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:55:52,926 INFO L225 Difference]: With dead ends: 3073 [2022-07-23 01:55:52,926 INFO L226 Difference]: Without dead ends: 2047 [2022-07-23 01:55:52,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:55:52,933 INFO L413 NwaCegarLoop]: 1744 mSDtfsCounter, 1417 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:55:52,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 3201 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 01:55:52,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2022-07-23 01:55:52,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2044. [2022-07-23 01:55:52,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1447 states have (on average 1.336558396682792) internal successors, (1934), 1499 states have internal predecessors, (1934), 469 states have call successors, (469), 131 states have call predecessors, (469), 127 states have return successors, (493), 447 states have call predecessors, (493), 468 states have call successors, (493) [2022-07-23 01:55:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2896 transitions. [2022-07-23 01:55:52,991 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2896 transitions. Word has length 101 [2022-07-23 01:55:52,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:55:52,992 INFO L495 AbstractCegarLoop]: Abstraction has 2044 states and 2896 transitions. [2022-07-23 01:55:52,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-23 01:55:52,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2896 transitions. [2022-07-23 01:55:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-23 01:55:52,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:55:52,995 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:55:53,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 01:55:53,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:55:53,219 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:55:53,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:55:53,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1799856770, now seen corresponding path program 2 times [2022-07-23 01:55:53,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:55:53,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366189549] [2022-07-23 01:55:53,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:55:53,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:55:53,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:55:53,222 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) [2022-07-23 01:55:53,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 01:55:54,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:55:54,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:55:54,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:55:54,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:55:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-23 01:55:54,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:55:54,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:55:54,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366189549] [2022-07-23 01:55:54,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366189549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:55:54,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:55:54,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:55:54,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93527661] [2022-07-23 01:55:54,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:55:54,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:55:54,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:55:54,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:55:54,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:55:54,232 INFO L87 Difference]: Start difference. First operand 2044 states and 2896 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-23 01:55:54,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:55:54,485 INFO L93 Difference]: Finished difference Result 5091 states and 7315 transitions. [2022-07-23 01:55:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:55:54,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 102 [2022-07-23 01:55:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:55:54,502 INFO L225 Difference]: With dead ends: 5091 [2022-07-23 01:55:54,502 INFO L226 Difference]: Without dead ends: 3060 [2022-07-23 01:55:54,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:55:54,510 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 1431 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:55:54,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 3138 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 01:55:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2022-07-23 01:55:54,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3057. [2022-07-23 01:55:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3057 states, 2166 states have (on average 1.33471837488458) internal successors, (2891), 2244 states have internal predecessors, (2891), 698 states have call successors, (698), 196 states have call predecessors, (698), 192 states have return successors, (771), 668 states have call predecessors, (771), 697 states have call successors, (771) [2022-07-23 01:55:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 4360 transitions. [2022-07-23 01:55:54,592 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 4360 transitions. Word has length 102 [2022-07-23 01:55:54,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:55:54,592 INFO L495 AbstractCegarLoop]: Abstraction has 3057 states and 4360 transitions. [2022-07-23 01:55:54,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-23 01:55:54,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 4360 transitions. [2022-07-23 01:55:54,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-23 01:55:54,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:55:54,595 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:55:54,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-23 01:55:54,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:55:54,808 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:55:54,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:55:54,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1090911955, now seen corresponding path program 1 times [2022-07-23 01:55:54,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:55:54,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020774959] [2022-07-23 01:55:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:55:54,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:55:54,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:55:54,811 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) [2022-07-23 01:55:54,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 01:55:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:55:55,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 01:55:55,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:55:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-23 01:55:56,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:55:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-23 01:55:56,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:55:56,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020774959] [2022-07-23 01:55:56,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020774959] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:55:56,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:55:56,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-23 01:55:56,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184923476] [2022-07-23 01:55:56,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:55:56,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 01:55:56,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:55:56,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 01:55:56,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-23 01:55:56,850 INFO L87 Difference]: Start difference. First operand 3057 states and 4360 transitions. Second operand has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-23 01:55:57,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:55:57,296 INFO L93 Difference]: Finished difference Result 6113 states and 8731 transitions. [2022-07-23 01:55:57,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 01:55:57,297 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) Word has length 103 [2022-07-23 01:55:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:55:57,316 INFO L225 Difference]: With dead ends: 6113 [2022-07-23 01:55:57,317 INFO L226 Difference]: Without dead ends: 3060 [2022-07-23 01:55:57,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-23 01:55:57,330 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 337 mSDsluCounter, 9337 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 10789 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 01:55:57,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 10789 Invalid, 65 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 01:55:57,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2022-07-23 01:55:57,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3060. [2022-07-23 01:55:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 2169 states have (on average 1.334255417242969) internal successors, (2894), 2247 states have internal predecessors, (2894), 698 states have call successors, (698), 196 states have call predecessors, (698), 192 states have return successors, (771), 668 states have call predecessors, (771), 697 states have call successors, (771) [2022-07-23 01:55:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4363 transitions. [2022-07-23 01:55:57,414 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4363 transitions. Word has length 103 [2022-07-23 01:55:57,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:55:57,415 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 4363 transitions. [2022-07-23 01:55:57,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-23 01:55:57,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4363 transitions. [2022-07-23 01:55:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-23 01:55:57,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:55:57,418 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:55:57,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-23 01:55:57,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:55:57,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:55:57,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:55:57,636 INFO L85 PathProgramCache]: Analyzing trace with hash -729703118, now seen corresponding path program 1 times [2022-07-23 01:55:57,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:55:57,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619245447] [2022-07-23 01:55:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:55:57,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:55:57,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:55:57,640 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) [2022-07-23 01:55:57,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 01:55:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:55:58,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:55:58,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:55:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-23 01:55:58,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:55:58,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:55:58,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619245447] [2022-07-23 01:55:58,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619245447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:55:58,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:55:58,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:55:58,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25293796] [2022-07-23 01:55:58,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:55:58,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:55:58,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:55:58,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:55:58,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:55:58,740 INFO L87 Difference]: Start difference. First operand 3060 states and 4363 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-23 01:55:58,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:55:58,980 INFO L93 Difference]: Finished difference Result 7122 states and 10314 transitions. [2022-07-23 01:55:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:55:58,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 105 [2022-07-23 01:55:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:55:59,002 INFO L225 Difference]: With dead ends: 7122 [2022-07-23 01:55:59,002 INFO L226 Difference]: Without dead ends: 4075 [2022-07-23 01:55:59,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:55:59,018 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 1433 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:55:59,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 3138 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 01:55:59,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2022-07-23 01:55:59,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4072. [2022-07-23 01:55:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4072 states, 2889 states have (on average 1.332987192800277) internal successors, (3851), 2993 states have internal predecessors, (3851), 925 states have call successors, (925), 261 states have call predecessors, (925), 257 states have return successors, (1062), 887 states have call predecessors, (1062), 924 states have call successors, (1062) [2022-07-23 01:55:59,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4072 states to 4072 states and 5838 transitions. [2022-07-23 01:55:59,204 INFO L78 Accepts]: Start accepts. Automaton has 4072 states and 5838 transitions. Word has length 105 [2022-07-23 01:55:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:55:59,205 INFO L495 AbstractCegarLoop]: Abstraction has 4072 states and 5838 transitions. [2022-07-23 01:55:59,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-23 01:55:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4072 states and 5838 transitions. [2022-07-23 01:55:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-23 01:55:59,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:55:59,207 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:55:59,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-23 01:55:59,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:55:59,423 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:55:59,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:55:59,424 INFO L85 PathProgramCache]: Analyzing trace with hash 301796486, now seen corresponding path program 2 times [2022-07-23 01:55:59,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:55:59,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460150202] [2022-07-23 01:55:59,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:55:59,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:55:59,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:55:59,427 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) [2022-07-23 01:55:59,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-23 01:56:00,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:56:00,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:56:00,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:56:00,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-23 01:56:00,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:00,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:00,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460150202] [2022-07-23 01:56:00,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460150202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:00,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:00,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:56:00,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42105409] [2022-07-23 01:56:00,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:00,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:56:00,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:00,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:56:00,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:56:00,435 INFO L87 Difference]: Start difference. First operand 4072 states and 5838 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-23 01:56:00,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:00,696 INFO L93 Difference]: Finished difference Result 9141 states and 13298 transitions. [2022-07-23 01:56:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:56:00,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 104 [2022-07-23 01:56:00,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:00,727 INFO L225 Difference]: With dead ends: 9141 [2022-07-23 01:56:00,728 INFO L226 Difference]: Without dead ends: 5082 [2022-07-23 01:56:00,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:56:00,744 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1423 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:00,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 3134 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 01:56:00,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2022-07-23 01:56:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 5079. [2022-07-23 01:56:00,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5079 states, 3606 states have (on average 1.331392124237382) internal successors, (4801), 3736 states have internal predecessors, (4801), 1150 states have call successors, (1150), 326 states have call predecessors, (1150), 322 states have return successors, (1354), 1104 states have call predecessors, (1354), 1149 states have call successors, (1354) [2022-07-23 01:56:00,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 7305 transitions. [2022-07-23 01:56:00,946 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 7305 transitions. Word has length 104 [2022-07-23 01:56:00,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:00,946 INFO L495 AbstractCegarLoop]: Abstraction has 5079 states and 7305 transitions. [2022-07-23 01:56:00,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-23 01:56:00,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 7305 transitions. [2022-07-23 01:56:00,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-23 01:56:00,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:00,951 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:00,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-23 01:56:01,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:01,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:01,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:01,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1342420577, now seen corresponding path program 1 times [2022-07-23 01:56:01,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:01,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321818972] [2022-07-23 01:56:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:01,174 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:01,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:01,175 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) [2022-07-23 01:56:01,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-23 01:56:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:02,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:56:02,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-23 01:56:02,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:02,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:02,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321818972] [2022-07-23 01:56:02,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321818972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:02,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:02,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:56:02,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487500526] [2022-07-23 01:56:02,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:02,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:56:02,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:02,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:56:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:56:02,317 INFO L87 Difference]: Start difference. First operand 5079 states and 7305 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-23 01:56:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:02,662 INFO L93 Difference]: Finished difference Result 14616 states and 21098 transitions. [2022-07-23 01:56:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:56:02,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 127 [2022-07-23 01:56:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:02,729 INFO L225 Difference]: With dead ends: 14616 [2022-07-23 01:56:02,729 INFO L226 Difference]: Without dead ends: 9550 [2022-07-23 01:56:02,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:56:02,806 INFO L413 NwaCegarLoop]: 2277 mSDtfsCounter, 1281 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:02,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 3683 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 01:56:02,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9550 states. [2022-07-23 01:56:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9550 to 9502. [2022-07-23 01:56:03,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9502 states, 6757 states have (on average 1.3278081989048394) internal successors, (8972), 6997 states have internal predecessors, (8972), 2120 states have call successors, (2120), 636 states have call predecessors, (2120), 624 states have return successors, (2661), 2020 states have call predecessors, (2661), 2119 states have call successors, (2661) [2022-07-23 01:56:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9502 states to 9502 states and 13753 transitions. [2022-07-23 01:56:03,097 INFO L78 Accepts]: Start accepts. Automaton has 9502 states and 13753 transitions. Word has length 127 [2022-07-23 01:56:03,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:03,098 INFO L495 AbstractCegarLoop]: Abstraction has 9502 states and 13753 transitions. [2022-07-23 01:56:03,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-23 01:56:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9502 states and 13753 transitions. [2022-07-23 01:56:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-23 01:56:03,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:03,103 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:03,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-07-23 01:56:03,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:03,324 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:03,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1041822185, now seen corresponding path program 1 times [2022-07-23 01:56:03,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:03,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789204210] [2022-07-23 01:56:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:03,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:03,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:03,327 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) [2022-07-23 01:56:03,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-23 01:56:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:04,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:56:04,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:04,714 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-23 01:56:04,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:04,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:04,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789204210] [2022-07-23 01:56:04,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789204210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:04,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:04,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:56:04,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80557218] [2022-07-23 01:56:04,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:04,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:56:04,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:04,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:56:04,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:56:04,715 INFO L87 Difference]: Start difference. First operand 9502 states and 13753 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-23 01:56:05,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:05,235 INFO L93 Difference]: Finished difference Result 25640 states and 37172 transitions. [2022-07-23 01:56:05,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:56:05,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 201 [2022-07-23 01:56:05,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:05,310 INFO L225 Difference]: With dead ends: 25640 [2022-07-23 01:56:05,310 INFO L226 Difference]: Without dead ends: 16151 [2022-07-23 01:56:05,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:56:05,349 INFO L413 NwaCegarLoop]: 2395 mSDtfsCounter, 1045 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:05,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 3802 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 01:56:05,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16151 states. [2022-07-23 01:56:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16151 to 16138. [2022-07-23 01:56:05,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16138 states, 11385 states have (on average 1.3246376811594203) internal successors, (15081), 11825 states have internal predecessors, (15081), 3667 states have call successors, (3667), 1108 states have call predecessors, (3667), 1085 states have return successors, (4666), 3478 states have call predecessors, (4666), 3666 states have call successors, (4666) [2022-07-23 01:56:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16138 states to 16138 states and 23414 transitions. [2022-07-23 01:56:05,890 INFO L78 Accepts]: Start accepts. Automaton has 16138 states and 23414 transitions. Word has length 201 [2022-07-23 01:56:05,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:05,891 INFO L495 AbstractCegarLoop]: Abstraction has 16138 states and 23414 transitions. [2022-07-23 01:56:05,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-23 01:56:05,891 INFO L276 IsEmpty]: Start isEmpty. Operand 16138 states and 23414 transitions. [2022-07-23 01:56:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-23 01:56:05,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:05,897 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:05,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-23 01:56:06,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:06,123 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:06,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:06,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1443721273, now seen corresponding path program 1 times [2022-07-23 01:56:06,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:06,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312634250] [2022-07-23 01:56:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:06,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:06,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:06,126 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) [2022-07-23 01:56:06,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-23 01:56:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:07,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 01:56:07,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-23 01:56:08,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:08,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:08,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312634250] [2022-07-23 01:56:08,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312634250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:08,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:08,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 01:56:08,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304755533] [2022-07-23 01:56:08,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:08,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 01:56:08,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:08,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 01:56:08,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 01:56:08,026 INFO L87 Difference]: Start difference. First operand 16138 states and 23414 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-23 01:56:08,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:08,729 INFO L93 Difference]: Finished difference Result 37228 states and 55151 transitions. [2022-07-23 01:56:08,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 01:56:08,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 230 [2022-07-23 01:56:08,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:08,810 INFO L225 Difference]: With dead ends: 37228 [2022-07-23 01:56:08,810 INFO L226 Difference]: Without dead ends: 21118 [2022-07-23 01:56:08,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:56:08,858 INFO L413 NwaCegarLoop]: 1906 mSDtfsCounter, 637 mSDsluCounter, 3314 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 5220 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:08,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 5220 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 01:56:08,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21118 states. [2022-07-23 01:56:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21118 to 16158. [2022-07-23 01:56:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16158 states, 11405 states have (on average 1.324068391056554) internal successors, (15101), 11845 states have internal predecessors, (15101), 3667 states have call successors, (3667), 1108 states have call predecessors, (3667), 1085 states have return successors, (4666), 3478 states have call predecessors, (4666), 3666 states have call successors, (4666) [2022-07-23 01:56:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16158 states to 16158 states and 23434 transitions. [2022-07-23 01:56:09,592 INFO L78 Accepts]: Start accepts. Automaton has 16158 states and 23434 transitions. Word has length 230 [2022-07-23 01:56:09,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:09,592 INFO L495 AbstractCegarLoop]: Abstraction has 16158 states and 23434 transitions. [2022-07-23 01:56:09,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-23 01:56:09,593 INFO L276 IsEmpty]: Start isEmpty. Operand 16158 states and 23434 transitions. [2022-07-23 01:56:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-07-23 01:56:09,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:09,598 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:09,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-23 01:56:09,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:09,819 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:09,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:09,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2080841875, now seen corresponding path program 1 times [2022-07-23 01:56:09,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:09,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333047933] [2022-07-23 01:56:09,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:09,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:09,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:09,822 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) [2022-07-23 01:56:09,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-23 01:56:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:11,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 2322 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:56:11,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-23 01:56:11,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:11,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:11,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333047933] [2022-07-23 01:56:11,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333047933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:11,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:11,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:56:11,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341259758] [2022-07-23 01:56:11,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:11,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:56:11,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:11,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:56:11,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:56:11,491 INFO L87 Difference]: Start difference. First operand 16158 states and 23434 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-23 01:56:12,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:12,337 INFO L93 Difference]: Finished difference Result 39572 states and 57462 transitions. [2022-07-23 01:56:12,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:56:12,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 247 [2022-07-23 01:56:12,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:12,447 INFO L225 Difference]: With dead ends: 39572 [2022-07-23 01:56:12,447 INFO L226 Difference]: Without dead ends: 23442 [2022-07-23 01:56:12,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:56:12,507 INFO L413 NwaCegarLoop]: 2471 mSDtfsCounter, 1287 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:12,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 3695 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 01:56:12,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23442 states. [2022-07-23 01:56:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23442 to 23429. [2022-07-23 01:56:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23429 states, 16542 states have (on average 1.323177366702938) internal successors, (21888), 17182 states have internal predecessors, (21888), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1584 states have return successors, (6759), 5024 states have call predecessors, (6759), 5301 states have call successors, (6759) [2022-07-23 01:56:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23429 states to 23429 states and 33949 transitions. [2022-07-23 01:56:13,279 INFO L78 Accepts]: Start accepts. Automaton has 23429 states and 33949 transitions. Word has length 247 [2022-07-23 01:56:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:13,279 INFO L495 AbstractCegarLoop]: Abstraction has 23429 states and 33949 transitions. [2022-07-23 01:56:13,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-23 01:56:13,280 INFO L276 IsEmpty]: Start isEmpty. Operand 23429 states and 33949 transitions. [2022-07-23 01:56:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-23 01:56:13,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:13,288 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:13,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-23 01:56:13,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:13,504 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:13,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash -812641372, now seen corresponding path program 1 times [2022-07-23 01:56:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:13,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876657685] [2022-07-23 01:56:13,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:13,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:13,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:13,519 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) [2022-07-23 01:56:13,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-23 01:56:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:15,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 01:56:15,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-23 01:56:15,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:15,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:15,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876657685] [2022-07-23 01:56:15,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876657685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:15,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:15,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 01:56:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614728464] [2022-07-23 01:56:15,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:15,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 01:56:15,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 01:56:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:56:15,735 INFO L87 Difference]: Start difference. First operand 23429 states and 33949 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-23 01:56:16,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:16,513 INFO L93 Difference]: Finished difference Result 50505 states and 73946 transitions. [2022-07-23 01:56:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 01:56:16,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 253 [2022-07-23 01:56:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:16,619 INFO L225 Difference]: With dead ends: 50505 [2022-07-23 01:56:16,619 INFO L226 Difference]: Without dead ends: 27104 [2022-07-23 01:56:16,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:56:16,691 INFO L413 NwaCegarLoop]: 1753 mSDtfsCounter, 235 mSDsluCounter, 4991 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 6744 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:16,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 6744 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 01:56:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27104 states. [2022-07-23 01:56:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27104 to 23469. [2022-07-23 01:56:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23469 states, 16572 states have (on average 1.3225923244026068) internal successors, (21918), 17212 states have internal predecessors, (21918), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1594 states have return successors, (6779), 5034 states have call predecessors, (6779), 5301 states have call successors, (6779) [2022-07-23 01:56:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23469 states to 23469 states and 33999 transitions. [2022-07-23 01:56:17,661 INFO L78 Accepts]: Start accepts. Automaton has 23469 states and 33999 transitions. Word has length 253 [2022-07-23 01:56:17,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:17,661 INFO L495 AbstractCegarLoop]: Abstraction has 23469 states and 33999 transitions. [2022-07-23 01:56:17,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-23 01:56:17,662 INFO L276 IsEmpty]: Start isEmpty. Operand 23469 states and 33999 transitions. [2022-07-23 01:56:17,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-23 01:56:17,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:17,670 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:17,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-23 01:56:17,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:17,896 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:17,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:17,896 INFO L85 PathProgramCache]: Analyzing trace with hash 556023379, now seen corresponding path program 1 times [2022-07-23 01:56:17,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:17,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882220538] [2022-07-23 01:56:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:17,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:17,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:17,899 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) [2022-07-23 01:56:17,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-23 01:56:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:19,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 01:56:19,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-23 01:56:19,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:19,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:19,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882220538] [2022-07-23 01:56:19,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882220538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:19,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:19,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 01:56:19,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091224307] [2022-07-23 01:56:19,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:19,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 01:56:19,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:19,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 01:56:19,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:56:19,838 INFO L87 Difference]: Start difference. First operand 23469 states and 33999 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-23 01:56:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:20,718 INFO L93 Difference]: Finished difference Result 50605 states and 74066 transitions. [2022-07-23 01:56:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 01:56:20,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 261 [2022-07-23 01:56:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:20,809 INFO L225 Difference]: With dead ends: 50605 [2022-07-23 01:56:20,809 INFO L226 Difference]: Without dead ends: 27164 [2022-07-23 01:56:20,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:56:20,865 INFO L413 NwaCegarLoop]: 1782 mSDtfsCounter, 235 mSDsluCounter, 5057 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 6839 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:20,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 6839 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 01:56:20,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27164 states. [2022-07-23 01:56:21,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27164 to 23509. [2022-07-23 01:56:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23509 states, 16602 states have (on average 1.322009396458258) internal successors, (21948), 17242 states have internal predecessors, (21948), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5044 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-23 01:56:21,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23509 states to 23509 states and 34049 transitions. [2022-07-23 01:56:21,755 INFO L78 Accepts]: Start accepts. Automaton has 23509 states and 34049 transitions. Word has length 261 [2022-07-23 01:56:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:21,756 INFO L495 AbstractCegarLoop]: Abstraction has 23509 states and 34049 transitions. [2022-07-23 01:56:21,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-23 01:56:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 23509 states and 34049 transitions. [2022-07-23 01:56:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-23 01:56:21,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:21,764 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:21,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-07-23 01:56:21,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:21,984 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:21,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1808713068, now seen corresponding path program 1 times [2022-07-23 01:56:21,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:21,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867207870] [2022-07-23 01:56:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:21,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:21,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:21,987 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:56:21,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-23 01:56:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:23,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 01:56:23,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-23 01:56:23,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:23,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:23,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867207870] [2022-07-23 01:56:23,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867207870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:23,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:23,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 01:56:23,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203901032] [2022-07-23 01:56:23,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:23,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 01:56:23,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:23,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 01:56:23,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:56:23,960 INFO L87 Difference]: Start difference. First operand 23509 states and 34049 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-23 01:56:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:24,809 INFO L93 Difference]: Finished difference Result 47170 states and 68435 transitions. [2022-07-23 01:56:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 01:56:24,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 261 [2022-07-23 01:56:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:24,910 INFO L225 Difference]: With dead ends: 47170 [2022-07-23 01:56:24,910 INFO L226 Difference]: Without dead ends: 23689 [2022-07-23 01:56:24,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 01:56:24,987 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 8 mSDsluCounter, 4341 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5790 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:24,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5790 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 01:56:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23689 states. [2022-07-23 01:56:25,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23689 to 23609. [2022-07-23 01:56:25,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23609 states, 16702 states have (on average 1.3200814273739672) internal successors, (22048), 17342 states have internal predecessors, (22048), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5044 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-23 01:56:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23609 states to 23609 states and 34149 transitions. [2022-07-23 01:56:25,744 INFO L78 Accepts]: Start accepts. Automaton has 23609 states and 34149 transitions. Word has length 261 [2022-07-23 01:56:25,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:25,745 INFO L495 AbstractCegarLoop]: Abstraction has 23609 states and 34149 transitions. [2022-07-23 01:56:25,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-23 01:56:25,745 INFO L276 IsEmpty]: Start isEmpty. Operand 23609 states and 34149 transitions. [2022-07-23 01:56:25,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-23 01:56:25,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:25,754 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:25,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-23 01:56:25,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:25,956 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:25,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:25,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2054354550, now seen corresponding path program 1 times [2022-07-23 01:56:25,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:25,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182416815] [2022-07-23 01:56:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:25,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:25,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:25,984 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:56:25,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-23 01:56:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:28,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 01:56:28,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-23 01:56:28,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:28,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:28,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182416815] [2022-07-23 01:56:28,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182416815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:28,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:28,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 01:56:28,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448939958] [2022-07-23 01:56:28,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:28,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 01:56:28,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:28,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 01:56:28,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 01:56:28,435 INFO L87 Difference]: Start difference. First operand 23609 states and 34149 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-23 01:56:30,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:56:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:31,500 INFO L93 Difference]: Finished difference Result 50865 states and 74356 transitions. [2022-07-23 01:56:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 01:56:31,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 260 [2022-07-23 01:56:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:31,587 INFO L225 Difference]: With dead ends: 50865 [2022-07-23 01:56:31,588 INFO L226 Difference]: Without dead ends: 27284 [2022-07-23 01:56:31,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:56:31,651 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 335 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 4480 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:31,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 4480 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-23 01:56:31,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27284 states. [2022-07-23 01:56:32,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27284 to 23609. [2022-07-23 01:56:32,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23609 states, 16702 states have (on average 1.319482696683032) internal successors, (22038), 17342 states have internal predecessors, (22038), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5044 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-23 01:56:32,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23609 states to 23609 states and 34139 transitions. [2022-07-23 01:56:32,508 INFO L78 Accepts]: Start accepts. Automaton has 23609 states and 34139 transitions. Word has length 260 [2022-07-23 01:56:32,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:32,508 INFO L495 AbstractCegarLoop]: Abstraction has 23609 states and 34139 transitions. [2022-07-23 01:56:32,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-23 01:56:32,509 INFO L276 IsEmpty]: Start isEmpty. Operand 23609 states and 34139 transitions. [2022-07-23 01:56:32,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-23 01:56:32,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:32,515 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:32,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-23 01:56:32,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:32,736 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:32,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:32,736 INFO L85 PathProgramCache]: Analyzing trace with hash 513467784, now seen corresponding path program 1 times [2022-07-23 01:56:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:32,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392362932] [2022-07-23 01:56:32,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:32,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:32,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:32,741 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:56:32,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-23 01:56:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:34,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 01:56:34,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-23 01:56:35,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:35,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:35,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392362932] [2022-07-23 01:56:35,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392362932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:35,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:35,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 01:56:35,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763737687] [2022-07-23 01:56:35,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:35,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 01:56:35,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:35,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 01:56:35,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 01:56:35,040 INFO L87 Difference]: Start difference. First operand 23609 states and 34139 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-23 01:56:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:36,737 INFO L93 Difference]: Finished difference Result 54800 states and 80837 transitions. [2022-07-23 01:56:36,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 01:56:36,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 260 [2022-07-23 01:56:36,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:36,872 INFO L225 Difference]: With dead ends: 54800 [2022-07-23 01:56:36,872 INFO L226 Difference]: Without dead ends: 31219 [2022-07-23 01:56:36,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-23 01:56:36,955 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 1247 mSDsluCounter, 8597 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 10481 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:36,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 10481 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 01:56:36,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31219 states. [2022-07-23 01:56:37,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31219 to 23649. [2022-07-23 01:56:37,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23649 states, 16742 states have (on average 1.318719388364592) internal successors, (22078), 17372 states have internal predecessors, (22078), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5054 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-23 01:56:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23649 states to 23649 states and 34179 transitions. [2022-07-23 01:56:37,928 INFO L78 Accepts]: Start accepts. Automaton has 23649 states and 34179 transitions. Word has length 260 [2022-07-23 01:56:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:37,931 INFO L495 AbstractCegarLoop]: Abstraction has 23649 states and 34179 transitions. [2022-07-23 01:56:37,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-23 01:56:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 23649 states and 34179 transitions. [2022-07-23 01:56:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-07-23 01:56:37,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:37,938 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:37,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-07-23 01:56:38,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:38,155 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash -774743177, now seen corresponding path program 1 times [2022-07-23 01:56:38,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:38,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771658958] [2022-07-23 01:56:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:38,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:38,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:38,159 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:56:38,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-23 01:56:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:40,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 01:56:40,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:40,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2022-07-23 01:56:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-23 01:56:40,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:40,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:40,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771658958] [2022-07-23 01:56:40,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771658958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:40,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:40,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 01:56:40,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090558559] [2022-07-23 01:56:40,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:40,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 01:56:40,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:40,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 01:56:40,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:56:40,754 INFO L87 Difference]: Start difference. First operand 23649 states and 34179 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-23 01:56:41,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:41,579 INFO L93 Difference]: Finished difference Result 47270 states and 68325 transitions. [2022-07-23 01:56:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 01:56:41,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 268 [2022-07-23 01:56:41,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:41,661 INFO L225 Difference]: With dead ends: 47270 [2022-07-23 01:56:41,661 INFO L226 Difference]: Without dead ends: 23649 [2022-07-23 01:56:41,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:56:41,720 INFO L413 NwaCegarLoop]: 1455 mSDtfsCounter, 0 mSDsluCounter, 4175 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:41,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5630 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 190 Unchecked, 0.0s Time] [2022-07-23 01:56:41,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23649 states. [2022-07-23 01:56:42,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23649 to 23649. [2022-07-23 01:56:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23649 states, 16742 states have (on average 1.3181220881615099) internal successors, (22068), 17372 states have internal predecessors, (22068), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5054 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-23 01:56:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23649 states to 23649 states and 34169 transitions. [2022-07-23 01:56:42,573 INFO L78 Accepts]: Start accepts. Automaton has 23649 states and 34169 transitions. Word has length 268 [2022-07-23 01:56:42,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:42,573 INFO L495 AbstractCegarLoop]: Abstraction has 23649 states and 34169 transitions. [2022-07-23 01:56:42,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-23 01:56:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 23649 states and 34169 transitions. [2022-07-23 01:56:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-23 01:56:42,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:42,580 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:42,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-23 01:56:42,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:42,800 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:42,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:42,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1292337354, now seen corresponding path program 1 times [2022-07-23 01:56:42,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:42,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149404300] [2022-07-23 01:56:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:42,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:42,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:42,804 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:56:42,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-23 01:56:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:45,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 01:56:45,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-23 01:56:45,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:45,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:45,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149404300] [2022-07-23 01:56:45,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149404300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:45,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:45,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 01:56:45,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209903204] [2022-07-23 01:56:45,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:45,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 01:56:45,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:45,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 01:56:45,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 01:56:45,363 INFO L87 Difference]: Start difference. First operand 23649 states and 34169 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-23 01:56:46,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:46,697 INFO L93 Difference]: Finished difference Result 51890 states and 75916 transitions. [2022-07-23 01:56:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 01:56:46,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 273 [2022-07-23 01:56:46,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:46,818 INFO L225 Difference]: With dead ends: 51890 [2022-07-23 01:56:46,819 INFO L226 Difference]: Without dead ends: 28269 [2022-07-23 01:56:46,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 01:56:46,894 INFO L413 NwaCegarLoop]: 1859 mSDtfsCounter, 645 mSDsluCounter, 6716 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 8575 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:46,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 8575 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 01:56:46,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28269 states. [2022-07-23 01:56:47,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28269 to 23699. [2022-07-23 01:56:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23699 states, 16782 states have (on average 1.3173638422118936) internal successors, (22108), 17412 states have internal predecessors, (22108), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1614 states have return successors, (6869), 5064 states have call predecessors, (6869), 5301 states have call successors, (6869) [2022-07-23 01:56:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23699 states to 23699 states and 34279 transitions. [2022-07-23 01:56:47,707 INFO L78 Accepts]: Start accepts. Automaton has 23699 states and 34279 transitions. Word has length 273 [2022-07-23 01:56:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:47,708 INFO L495 AbstractCegarLoop]: Abstraction has 23699 states and 34279 transitions. [2022-07-23 01:56:47,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-23 01:56:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 23699 states and 34279 transitions. [2022-07-23 01:56:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-23 01:56:47,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:47,714 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:47,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-23 01:56:47,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:47,932 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:47,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:47,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1360605743, now seen corresponding path program 1 times [2022-07-23 01:56:47,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:47,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384313582] [2022-07-23 01:56:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:47,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:47,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:47,935 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:56:47,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-23 01:56:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:50,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 01:56:50,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 01:56:50,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:56:50,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:50,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384313582] [2022-07-23 01:56:50,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384313582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:56:50,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:56:50,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 01:56:50,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565551934] [2022-07-23 01:56:50,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:56:50,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 01:56:50,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:50,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 01:56:50,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 01:56:50,147 INFO L87 Difference]: Start difference. First operand 23699 states and 34279 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-23 01:56:51,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:56:51,499 INFO L93 Difference]: Finished difference Result 56429 states and 81447 transitions. [2022-07-23 01:56:51,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 01:56:51,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 277 [2022-07-23 01:56:51,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:56:51,648 INFO L225 Difference]: With dead ends: 56429 [2022-07-23 01:56:51,648 INFO L226 Difference]: Without dead ends: 32758 [2022-07-23 01:56:51,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:56:51,735 INFO L413 NwaCegarLoop]: 2730 mSDtfsCounter, 1479 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 6703 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 01:56:51,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 6703 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 01:56:51,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32758 states. [2022-07-23 01:56:52,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32758 to 23719. [2022-07-23 01:56:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23719 states, 16802 states have (on average 1.3169860730865373) internal successors, (22128), 17432 states have internal predecessors, (22128), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1614 states have return successors, (6869), 5064 states have call predecessors, (6869), 5301 states have call successors, (6869) [2022-07-23 01:56:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23719 states to 23719 states and 34299 transitions. [2022-07-23 01:56:52,652 INFO L78 Accepts]: Start accepts. Automaton has 23719 states and 34299 transitions. Word has length 277 [2022-07-23 01:56:52,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:56:52,653 INFO L495 AbstractCegarLoop]: Abstraction has 23719 states and 34299 transitions. [2022-07-23 01:56:52,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-23 01:56:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 23719 states and 34299 transitions. [2022-07-23 01:56:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-07-23 01:56:52,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:56:52,660 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:56:52,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-07-23 01:56:52,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:56:52,876 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:56:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:56:52,876 INFO L85 PathProgramCache]: Analyzing trace with hash -522312833, now seen corresponding path program 1 times [2022-07-23 01:56:52,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:56:52,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76663703] [2022-07-23 01:56:52,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:56:52,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:56:52,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:56:52,888 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:56:52,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-23 01:56:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:56:55,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 2476 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-23 01:56:55,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:56:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 01:56:56,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:56:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-23 01:56:57,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:56:57,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76663703] [2022-07-23 01:56:57,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76663703] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:56:57,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:56:57,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2022-07-23 01:56:57,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414728226] [2022-07-23 01:56:57,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:56:57,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-23 01:56:57,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:56:57,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-23 01:56:57,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-07-23 01:56:57,714 INFO L87 Difference]: Start difference. First operand 23719 states and 34299 transitions. Second operand has 20 states, 19 states have (on average 9.157894736842104) internal successors, (174), 16 states have internal predecessors, (174), 5 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) [2022-07-23 01:57:00,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:03,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:05,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:07,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:09,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:11,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:13,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:15,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:17,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:19,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:21,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:23,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:57:27,670 INFO L93 Difference]: Finished difference Result 56700 states and 83780 transitions. [2022-07-23 01:57:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 01:57:27,672 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 9.157894736842104) internal successors, (174), 16 states have internal predecessors, (174), 5 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) Word has length 279 [2022-07-23 01:57:27,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:57:27,829 INFO L225 Difference]: With dead ends: 56700 [2022-07-23 01:57:27,830 INFO L226 Difference]: Without dead ends: 33009 [2022-07-23 01:57:27,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2022-07-23 01:57:27,922 INFO L413 NwaCegarLoop]: 1931 mSDtfsCounter, 3013 mSDsluCounter, 27806 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 629 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3078 SdHoareTripleChecker+Valid, 29737 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2022-07-23 01:57:27,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3078 Valid, 29737 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 472 Invalid, 12 Unknown, 0 Unchecked, 27.5s Time] [2022-07-23 01:57:27,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33009 states. [2022-07-23 01:57:28,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33009 to 23759. [2022-07-23 01:57:28,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23759 states, 16832 states have (on average 1.3158269961977187) internal successors, (22148), 17462 states have internal predecessors, (22148), 5312 states have call successors, (5312), 1618 states have call predecessors, (5312), 1614 states have return successors, (6879), 5069 states have call predecessors, (6879), 5311 states have call successors, (6879) [2022-07-23 01:57:29,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23759 states to 23759 states and 34339 transitions. [2022-07-23 01:57:29,118 INFO L78 Accepts]: Start accepts. Automaton has 23759 states and 34339 transitions. Word has length 279 [2022-07-23 01:57:29,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:57:29,119 INFO L495 AbstractCegarLoop]: Abstraction has 23759 states and 34339 transitions. [2022-07-23 01:57:29,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 9.157894736842104) internal successors, (174), 16 states have internal predecessors, (174), 5 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) [2022-07-23 01:57:29,120 INFO L276 IsEmpty]: Start isEmpty. Operand 23759 states and 34339 transitions. [2022-07-23 01:57:29,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-07-23 01:57:29,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:57:29,125 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:57:29,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-23 01:57:29,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:57:29,346 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:57:29,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:57:29,346 INFO L85 PathProgramCache]: Analyzing trace with hash 899872474, now seen corresponding path program 1 times [2022-07-23 01:57:29,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:57:29,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319776492] [2022-07-23 01:57:29,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:57:29,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:57:29,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:57:29,350 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:57:29,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-23 01:57:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:57:31,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2769 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 01:57:31,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:57:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-23 01:57:32,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:57:32,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:57:32,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319776492] [2022-07-23 01:57:32,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319776492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:57:32,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:57:32,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 01:57:32,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164118607] [2022-07-23 01:57:32,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:57:32,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 01:57:32,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:57:32,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 01:57:32,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:57:32,371 INFO L87 Difference]: Start difference. First operand 23759 states and 34339 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-23 01:57:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:57:34,533 INFO L93 Difference]: Finished difference Result 57864 states and 83630 transitions. [2022-07-23 01:57:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 01:57:34,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 348 [2022-07-23 01:57:34,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:57:34,629 INFO L225 Difference]: With dead ends: 57864 [2022-07-23 01:57:34,629 INFO L226 Difference]: Without dead ends: 34133 [2022-07-23 01:57:34,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 01:57:34,683 INFO L413 NwaCegarLoop]: 2985 mSDtfsCounter, 1710 mSDsluCounter, 6900 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 9885 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 01:57:34,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 9885 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-23 01:57:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34133 states. [2022-07-23 01:57:35,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34133 to 23779. [2022-07-23 01:57:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23779 states, 16842 states have (on average 1.3156394727467047) internal successors, (22158), 17472 states have internal predecessors, (22158), 5322 states have call successors, (5322), 1618 states have call predecessors, (5322), 1614 states have return successors, (6889), 5079 states have call predecessors, (6889), 5321 states have call successors, (6889) [2022-07-23 01:57:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23779 states to 23779 states and 34369 transitions. [2022-07-23 01:57:35,569 INFO L78 Accepts]: Start accepts. Automaton has 23779 states and 34369 transitions. Word has length 348 [2022-07-23 01:57:35,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:57:35,569 INFO L495 AbstractCegarLoop]: Abstraction has 23779 states and 34369 transitions. [2022-07-23 01:57:35,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-23 01:57:35,570 INFO L276 IsEmpty]: Start isEmpty. Operand 23779 states and 34369 transitions. [2022-07-23 01:57:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-07-23 01:57:35,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:57:35,577 INFO L195 NwaCegarLoop]: trace histogram [20, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:57:35,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-23 01:57:35,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:57:35,799 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:57:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:57:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash -931415674, now seen corresponding path program 1 times [2022-07-23 01:57:35,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:57:35,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845770061] [2022-07-23 01:57:35,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:57:35,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:57:35,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:57:35,804 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:57:35,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-23 01:57:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:57:39,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 3570 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-23 01:57:39,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:57:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-07-23 01:57:39,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:57:39,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:57:39,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845770061] [2022-07-23 01:57:39,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845770061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:57:39,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:57:39,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 01:57:39,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236063172] [2022-07-23 01:57:39,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:57:39,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 01:57:39,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:57:39,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 01:57:39,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-23 01:57:39,863 INFO L87 Difference]: Start difference. First operand 23779 states and 34369 transitions. Second operand has 8 states, 8 states have (on average 24.75) internal successors, (198), 7 states have internal predecessors, (198), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-23 01:57:42,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:57:44,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:57:44,064 INFO L93 Difference]: Finished difference Result 49980 states and 72756 transitions. [2022-07-23 01:57:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 01:57:44,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.75) internal successors, (198), 7 states have internal predecessors, (198), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 407 [2022-07-23 01:57:44,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:57:44,176 INFO L225 Difference]: With dead ends: 49980 [2022-07-23 01:57:44,177 INFO L226 Difference]: Without dead ends: 26229 [2022-07-23 01:57:44,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-23 01:57:44,248 INFO L413 NwaCegarLoop]: 2067 mSDtfsCounter, 1027 mSDsluCounter, 10896 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 194 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 12963 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-23 01:57:44,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 12963 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-07-23 01:57:44,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26229 states. [2022-07-23 01:57:45,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26229 to 23229. [2022-07-23 01:57:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23229 states, 16477 states have (on average 1.3177762942283182) internal successors, (21713), 17092 states have internal predecessors, (21713), 5182 states have call successors, (5182), 1573 states have call predecessors, (5182), 1569 states have return successors, (6739), 4939 states have call predecessors, (6739), 5181 states have call successors, (6739) [2022-07-23 01:57:45,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23229 states to 23229 states and 33634 transitions. [2022-07-23 01:57:45,336 INFO L78 Accepts]: Start accepts. Automaton has 23229 states and 33634 transitions. Word has length 407 [2022-07-23 01:57:45,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:57:45,336 INFO L495 AbstractCegarLoop]: Abstraction has 23229 states and 33634 transitions. [2022-07-23 01:57:45,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.75) internal successors, (198), 7 states have internal predecessors, (198), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-23 01:57:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 23229 states and 33634 transitions. [2022-07-23 01:57:45,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-07-23 01:57:45,343 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:57:45,343 INFO L195 NwaCegarLoop]: trace histogram [16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:57:45,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-07-23 01:57:45,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:57:45,572 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:57:45,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:57:45,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1196115669, now seen corresponding path program 1 times [2022-07-23 01:57:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:57:45,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730271593] [2022-07-23 01:57:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:57:45,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:57:45,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:57:45,576 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:57:45,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-23 01:57:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:57:49,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 3505 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 01:57:49,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:57:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 163 proven. 10 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-07-23 01:57:49,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:57:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 34 proven. 84 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-07-23 01:57:50,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:57:50,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730271593] [2022-07-23 01:57:50,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730271593] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:57:50,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:57:50,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-23 01:57:50,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220216100] [2022-07-23 01:57:50,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:57:50,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 01:57:50,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:57:50,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 01:57:50,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-23 01:57:50,604 INFO L87 Difference]: Start difference. First operand 23229 states and 33634 transitions. Second operand has 14 states, 14 states have (on average 16.785714285714285) internal successors, (235), 14 states have internal predecessors, (235), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-23 01:57:53,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:57:53,792 INFO L93 Difference]: Finished difference Result 46555 states and 67436 transitions. [2022-07-23 01:57:53,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-23 01:57:53,793 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.785714285714285) internal successors, (235), 14 states have internal predecessors, (235), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 409 [2022-07-23 01:57:53,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:57:53,904 INFO L225 Difference]: With dead ends: 46555 [2022-07-23 01:57:53,905 INFO L226 Difference]: Without dead ends: 23324 [2022-07-23 01:57:53,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 804 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=197, Invalid=355, Unknown=0, NotChecked=0, Total=552 [2022-07-23 01:57:53,992 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 31 mSDsluCounter, 7239 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 8689 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 01:57:53,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 8689 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 01:57:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23324 states. [2022-07-23 01:57:55,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23324 to 23314. [2022-07-23 01:57:55,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23314 states, 16557 states have (on average 1.3180527873407017) internal successors, (21823), 17172 states have internal predecessors, (21823), 5182 states have call successors, (5182), 1578 states have call predecessors, (5182), 1574 states have return successors, (6739), 4939 states have call predecessors, (6739), 5181 states have call successors, (6739) [2022-07-23 01:57:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23314 states to 23314 states and 33744 transitions. [2022-07-23 01:57:55,140 INFO L78 Accepts]: Start accepts. Automaton has 23314 states and 33744 transitions. Word has length 409 [2022-07-23 01:57:55,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:57:55,141 INFO L495 AbstractCegarLoop]: Abstraction has 23314 states and 33744 transitions. [2022-07-23 01:57:55,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.785714285714285) internal successors, (235), 14 states have internal predecessors, (235), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-23 01:57:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 23314 states and 33744 transitions. [2022-07-23 01:57:55,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-07-23 01:57:55,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:57:55,148 INFO L195 NwaCegarLoop]: trace histogram [39, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:57:55,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-23 01:57:55,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:57:55,364 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:57:55,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:57:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash 324819312, now seen corresponding path program 1 times [2022-07-23 01:57:55,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:57:55,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718539143] [2022-07-23 01:57:55,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:57:55,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:57:55,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:57:55,369 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:57:55,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-23 01:57:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:57:59,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 3727 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 01:57:59,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:58:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 547 proven. 55 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2022-07-23 01:58:00,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:58:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 64 proven. 389 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2022-07-23 01:58:03,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:58:03,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718539143] [2022-07-23 01:58:03,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718539143] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:58:03,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:58:03,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-23 01:58:03,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348130622] [2022-07-23 01:58:03,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:58:03,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-23 01:58:03,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:58:03,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-23 01:58:03,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-23 01:58:03,034 INFO L87 Difference]: Start difference. First operand 23314 states and 33744 transitions. Second operand has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-23 01:58:12,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:58:12,989 INFO L93 Difference]: Finished difference Result 46984 states and 68022 transitions. [2022-07-23 01:58:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-23 01:58:12,990 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 427 [2022-07-23 01:58:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:58:13,110 INFO L225 Difference]: With dead ends: 46984 [2022-07-23 01:58:13,111 INFO L226 Difference]: Without dead ends: 23498 [2022-07-23 01:58:13,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 828 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-07-23 01:58:13,191 INFO L413 NwaCegarLoop]: 1456 mSDtfsCounter, 147 mSDsluCounter, 20317 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 21773 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:58:13,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 21773 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-23 01:58:13,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23498 states. [2022-07-23 01:58:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23498 to 23464. [2022-07-23 01:58:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23464 states, 16707 states have (on average 1.3137008439576225) internal successors, (21948), 17322 states have internal predecessors, (21948), 5182 states have call successors, (5182), 1578 states have call predecessors, (5182), 1574 states have return successors, (6739), 4939 states have call predecessors, (6739), 5181 states have call successors, (6739) [2022-07-23 01:58:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23464 states to 23464 states and 33869 transitions. [2022-07-23 01:58:14,263 INFO L78 Accepts]: Start accepts. Automaton has 23464 states and 33869 transitions. Word has length 427 [2022-07-23 01:58:14,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:58:14,263 INFO L495 AbstractCegarLoop]: Abstraction has 23464 states and 33869 transitions. [2022-07-23 01:58:14,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-23 01:58:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 23464 states and 33869 transitions. [2022-07-23 01:58:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-07-23 01:58:14,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:58:14,271 INFO L195 NwaCegarLoop]: trace histogram [70, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:58:14,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-07-23 01:58:14,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:58:14,488 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:58:14,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:58:14,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2017449931, now seen corresponding path program 2 times [2022-07-23 01:58:14,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:58:14,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839389042] [2022-07-23 01:58:14,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:58:14,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:58:14,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:58:14,492 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:58:14,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-23 01:58:16,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:58:16,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:58:16,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 01:58:16,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:58:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2962 trivial. 0 not checked. [2022-07-23 01:58:16,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:58:16,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:58:16,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839389042] [2022-07-23 01:58:16,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839389042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:58:16,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:58:16,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-23 01:58:16,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574879393] [2022-07-23 01:58:16,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:58:16,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 01:58:16,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:58:16,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 01:58:16,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-23 01:58:16,855 INFO L87 Difference]: Start difference. First operand 23464 states and 33869 transitions. Second operand has 10 states, 10 states have (on average 18.4) internal successors, (184), 8 states have internal predecessors, (184), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (37), 5 states have call predecessors, (37), 3 states have call successors, (37) [2022-07-23 01:58:23,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:58:23,012 INFO L93 Difference]: Finished difference Result 57069 states and 82360 transitions. [2022-07-23 01:58:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-23 01:58:23,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 8 states have internal predecessors, (184), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (37), 5 states have call predecessors, (37), 3 states have call successors, (37) Word has length 463 [2022-07-23 01:58:23,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:58:23,204 INFO L225 Difference]: With dead ends: 57069 [2022-07-23 01:58:23,204 INFO L226 Difference]: Without dead ends: 33633 [2022-07-23 01:58:23,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-07-23 01:58:23,293 INFO L413 NwaCegarLoop]: 2808 mSDtfsCounter, 1976 mSDsluCounter, 20705 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 23513 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-23 01:58:23,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1979 Valid, 23513 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-23 01:58:23,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33633 states. [2022-07-23 01:58:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33633 to 23559. [2022-07-23 01:58:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23559 states, 16777 states have (on average 1.3123919651904392) internal successors, (22018), 17392 states have internal predecessors, (22018), 5192 states have call successors, (5192), 1578 states have call predecessors, (5192), 1589 states have return successors, (6764), 4969 states have call predecessors, (6764), 5191 states have call successors, (6764) [2022-07-23 01:58:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23559 states to 23559 states and 33974 transitions. [2022-07-23 01:58:24,505 INFO L78 Accepts]: Start accepts. Automaton has 23559 states and 33974 transitions. Word has length 463 [2022-07-23 01:58:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:58:24,506 INFO L495 AbstractCegarLoop]: Abstraction has 23559 states and 33974 transitions. [2022-07-23 01:58:24,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 8 states have internal predecessors, (184), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (37), 5 states have call predecessors, (37), 3 states have call successors, (37) [2022-07-23 01:58:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 23559 states and 33974 transitions. [2022-07-23 01:58:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-07-23 01:58:24,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:58:24,513 INFO L195 NwaCegarLoop]: trace histogram [70, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:58:24,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-23 01:58:24,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:58:24,732 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:58:24,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:58:24,732 INFO L85 PathProgramCache]: Analyzing trace with hash 331270093, now seen corresponding path program 1 times [2022-07-23 01:58:24,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:58:24,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363370539] [2022-07-23 01:58:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:58:24,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:58:24,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:58:24,736 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:58:24,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-23 01:58:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:58:29,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 4097 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-23 01:58:29,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:58:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 1441 proven. 253 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2022-07-23 01:58:32,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:58:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 124 proven. 1335 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-07-23 01:58:41,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:58:41,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363370539] [2022-07-23 01:58:41,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363370539] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:58:41,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:58:41,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-23 01:58:41,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874630552] [2022-07-23 01:58:41,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:58:41,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-23 01:58:41,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:58:41,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-23 01:58:41,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-07-23 01:58:41,876 INFO L87 Difference]: Start difference. First operand 23559 states and 33974 transitions. Second operand has 50 states, 50 states have (on average 5.42) internal successors, (271), 50 states have internal predecessors, (271), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-23 01:59:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:59:27,532 INFO L93 Difference]: Finished difference Result 47852 states and 69034 transitions. [2022-07-23 01:59:27,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-07-23 01:59:27,533 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.42) internal successors, (271), 50 states have internal predecessors, (271), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 463 [2022-07-23 01:59:27,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:59:27,678 INFO L225 Difference]: With dead ends: 47852 [2022-07-23 01:59:27,691 INFO L226 Difference]: Without dead ends: 23941 [2022-07-23 01:59:27,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 876 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1926 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=3869, Invalid=9013, Unknown=0, NotChecked=0, Total=12882 [2022-07-23 01:59:27,774 INFO L413 NwaCegarLoop]: 1468 mSDtfsCounter, 651 mSDsluCounter, 33680 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 35148 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-07-23 01:59:27,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 35148 Invalid, 2822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [361 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-07-23 01:59:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23941 states. [2022-07-23 01:59:28,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23941 to 23859. [2022-07-23 01:59:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23859 states, 17077 states have (on average 1.3069040229548516) internal successors, (22318), 17692 states have internal predecessors, (22318), 5192 states have call successors, (5192), 1578 states have call predecessors, (5192), 1589 states have return successors, (6764), 4969 states have call predecessors, (6764), 5191 states have call successors, (6764) [2022-07-23 01:59:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23859 states to 23859 states and 34274 transitions. [2022-07-23 01:59:28,803 INFO L78 Accepts]: Start accepts. Automaton has 23859 states and 34274 transitions. Word has length 463 [2022-07-23 01:59:28,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:59:28,804 INFO L495 AbstractCegarLoop]: Abstraction has 23859 states and 34274 transitions. [2022-07-23 01:59:28,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.42) internal successors, (271), 50 states have internal predecessors, (271), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-23 01:59:28,804 INFO L276 IsEmpty]: Start isEmpty. Operand 23859 states and 34274 transitions. [2022-07-23 01:59:28,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2022-07-23 01:59:28,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:59:28,810 INFO L195 NwaCegarLoop]: trace histogram [142, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:59:28,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-23 01:59:29,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:59:29,036 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:59:29,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:59:29,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2110026931, now seen corresponding path program 2 times [2022-07-23 01:59:29,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:59:29,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172990106] [2022-07-23 01:59:29,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:59:29,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:59:29,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:59:29,040 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:59:29,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-23 01:59:30,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:59:30,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:59:31,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 2028 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 01:59:31,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:59:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10855 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10855 trivial. 0 not checked. [2022-07-23 01:59:31,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:59:31,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:59:31,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172990106] [2022-07-23 01:59:31,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172990106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:59:31,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:59:31,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 01:59:31,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570221621] [2022-07-23 01:59:31,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:59:31,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 01:59:31,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:59:31,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 01:59:31,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 01:59:31,257 INFO L87 Difference]: Start difference. First operand 23859 states and 34274 transitions. Second operand has 7 states, 6 states have (on average 30.0) internal successors, (180), 5 states have internal predecessors, (180), 4 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-23 01:59:32,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:59:32,882 INFO L93 Difference]: Finished difference Result 26172 states and 37721 transitions. [2022-07-23 01:59:32,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 01:59:32,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 30.0) internal successors, (180), 5 states have internal predecessors, (180), 4 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 535 [2022-07-23 01:59:32,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:59:33,001 INFO L225 Difference]: With dead ends: 26172 [2022-07-23 01:59:33,002 INFO L226 Difference]: Without dead ends: 26169 [2022-07-23 01:59:33,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-23 01:59:33,022 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 298 mSDsluCounter, 7139 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 8684 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 01:59:33,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 8684 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 01:59:33,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26169 states. [2022-07-23 01:59:33,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26169 to 23979. [2022-07-23 01:59:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23979 states, 17167 states have (on average 1.3052950428147025) internal successors, (22408), 17782 states have internal predecessors, (22408), 5192 states have call successors, (5192), 1608 states have call predecessors, (5192), 1619 states have return successors, (6764), 4969 states have call predecessors, (6764), 5191 states have call successors, (6764) [2022-07-23 01:59:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23979 states to 23979 states and 34364 transitions. [2022-07-23 01:59:34,076 INFO L78 Accepts]: Start accepts. Automaton has 23979 states and 34364 transitions. Word has length 535 [2022-07-23 01:59:34,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:59:34,077 INFO L495 AbstractCegarLoop]: Abstraction has 23979 states and 34364 transitions. [2022-07-23 01:59:34,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 30.0) internal successors, (180), 5 states have internal predecessors, (180), 4 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-23 01:59:34,077 INFO L276 IsEmpty]: Start isEmpty. Operand 23979 states and 34364 transitions. [2022-07-23 01:59:34,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2022-07-23 01:59:34,084 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:59:34,084 INFO L195 NwaCegarLoop]: trace histogram [142, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:59:34,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-07-23 01:59:34,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:59:34,289 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:59:34,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:59:34,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1558896146, now seen corresponding path program 1 times [2022-07-23 01:59:34,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:59:34,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38353483] [2022-07-23 01:59:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:59:34,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:59:34,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:59:34,293 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 01:59:34,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-23 01:59:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:59:39,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 4895 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-23 01:59:39,228 INFO L286 TraceCheckSpWp]: Computing forward predicates...