./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.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 549c0f0e85f506f59a54b746c0743ded562d36f784f1b0fcb4bf7d5e1672332d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:47:11,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:47:11,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:47:11,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:47:11,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:47:11,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:47:11,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:47:11,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:47:11,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:47:11,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:47:11,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:47:11,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:47:11,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:47:11,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:47:11,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:47:11,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:47:11,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:47:11,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:47:11,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:47:11,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:47:11,191 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:47:11,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:47:11,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:47:11,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:47:11,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:47:11,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:47:11,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:47:11,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:47:11,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:47:11,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:47:11,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:47:11,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:47:11,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:47:11,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:47:11,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:47:11,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:47:11,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:47:11,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:47:11,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:47:11,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:47:11,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:47:11,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:47:11,208 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:47:11,230 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:47:11,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:47:11,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:47:11,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:47:11,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:47:11,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:47:11,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:47:11,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:47:11,232 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:47:11,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:47:11,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:47:11,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:47:11,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:47:11,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:47:11,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:47:11,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:47:11,234 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:47:11,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:47:11,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:47:11,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:47:11,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:47:11,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:47:11,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:47:11,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:47:11,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:47:11,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:47:11,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:47:11,239 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:47:11,239 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:47:11,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:47:11,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 549c0f0e85f506f59a54b746c0743ded562d36f784f1b0fcb4bf7d5e1672332d [2022-07-22 23:47:11,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:47:11,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:47:11,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:47:11,463 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:47:11,464 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:47:11,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-07-22 23:47:11,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb7bb260e/bf33e5b72a8443f0818972d90b9d644d/FLAG5e6e1efdf [2022-07-22 23:47:12,159 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:47:12,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-07-22 23:47:12,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb7bb260e/bf33e5b72a8443f0818972d90b9d644d/FLAG5e6e1efdf [2022-07-22 23:47:12,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb7bb260e/bf33e5b72a8443f0818972d90b9d644d [2022-07-22 23:47:12,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:47:12,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:47:12,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:47:12,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:47:12,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:47:12,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:47:12" (1/1) ... [2022-07-22 23:47:12,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c226a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:12, skipping insertion in model container [2022-07-22 23:47:12,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:47:12" (1/1) ... [2022-07-22 23:47:12,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:47:12,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:47:13,180 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-07-22 23:47:13,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:47:13,564 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:47:13,658 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-07-22 23:47:13,709 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckException: Type check failed for C: cr = (unsigned int )cr & 243U [6660] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckBinaryExpression(TypeCheckHelper.java:207) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.constructBinaryExpression(ExpressionFactory.java:597) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.newBinaryExpression(ExpressionFactory.java:132) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:483) 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:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-22 23:47:13,717 INFO L158 Benchmark]: Toolchain (without parser) took 1154.79ms. Allocated memory was 92.3MB in the beginning and 123.7MB in the end (delta: 31.5MB). Free memory was 50.8MB in the beginning and 61.6MB in the end (delta: -10.8MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2022-07-22 23:47:13,718 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 92.3MB. Free memory was 48.0MB in the beginning and 47.9MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 23:47:13,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1152.81ms. Allocated memory was 92.3MB in the beginning and 123.7MB in the end (delta: 31.5MB). Free memory was 50.6MB in the beginning and 61.6MB in the end (delta: -10.9MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2022-07-22 23:47:13,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 92.3MB. Free memory was 48.0MB in the beginning and 47.9MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1152.81ms. Allocated memory was 92.3MB in the beginning and 123.7MB in the end (delta: 31.5MB). Free memory was 50.6MB in the beginning and 61.6MB in the end (delta: -10.9MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: cr = (unsigned int )cr & 243U [6660] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: cr = (unsigned int )cr & 243U [6660]: de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.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 549c0f0e85f506f59a54b746c0743ded562d36f784f1b0fcb4bf7d5e1672332d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:47:15,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:47:15,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:47:15,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:47:15,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:47:15,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:47:15,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:47:15,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:47:15,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:47:15,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:47:15,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:47:15,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:47:15,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:47:15,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:47:15,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:47:15,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:47:15,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:47:15,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:47:15,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:47:15,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:47:15,172 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:47:15,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:47:15,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:47:15,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:47:15,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:47:15,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:47:15,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:47:15,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:47:15,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:47:15,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:47:15,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:47:15,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:47:15,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:47:15,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:47:15,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:47:15,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:47:15,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:47:15,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:47:15,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:47:15,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:47:15,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:47:15,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:47:15,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-22 23:47:15,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:47:15,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:47:15,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:47:15,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:47:15,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:47:15,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:47:15,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:47:15,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:47:15,234 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:47:15,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:47:15,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:47:15,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:47:15,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:47:15,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:47:15,236 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 23:47:15,241 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 23:47:15,241 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 23:47:15,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:47:15,241 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:47:15,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:47:15,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:47:15,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:47:15,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:47:15,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:47:15,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:47:15,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:47:15,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:47:15,243 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 23:47:15,243 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 23:47:15,243 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:47:15,243 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:47:15,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:47:15,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 23:47:15,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 549c0f0e85f506f59a54b746c0743ded562d36f784f1b0fcb4bf7d5e1672332d [2022-07-22 23:47:15,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:47:15,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:47:15,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:47:15,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:47:15,503 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:47:15,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-07-22 23:47:15,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de189da21/898cc245238f44c6bdce209fc411f845/FLAG7b552b078 [2022-07-22 23:47:16,140 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:47:16,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-07-22 23:47:16,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de189da21/898cc245238f44c6bdce209fc411f845/FLAG7b552b078 [2022-07-22 23:47:16,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de189da21/898cc245238f44c6bdce209fc411f845 [2022-07-22 23:47:16,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:47:16,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:47:16,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:47:16,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:47:16,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:47:16,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:47:16" (1/1) ... [2022-07-22 23:47:16,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a427bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:16, skipping insertion in model container [2022-07-22 23:47:16,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:47:16" (1/1) ... [2022-07-22 23:47:16,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:47:16,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:47:17,198 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-07-22 23:47:17,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:47:17,937 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-22 23:47:17,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:47:18,054 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-07-22 23:47:18,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:47:18,154 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:47:18,315 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-07-22 23:47:18,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:47:18,490 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:47:18,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:18 WrapperNode [2022-07-22 23:47:18,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:47:18,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:47:18,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:47:18,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:47:18,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:18" (1/1) ... [2022-07-22 23:47:18,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:18" (1/1) ... [2022-07-22 23:47:18,620 INFO L137 Inliner]: procedures = 212, calls = 1031, calls flagged for inlining = 87, calls inlined = 80, statements flattened = 2343 [2022-07-22 23:47:18,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:47:18,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:47:18,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:47:18,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:47:18,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:18" (1/1) ... [2022-07-22 23:47:18,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:18" (1/1) ... [2022-07-22 23:47:18,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:18" (1/1) ... [2022-07-22 23:47:18,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:18" (1/1) ... [2022-07-22 23:47:18,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:18" (1/1) ... [2022-07-22 23:47:18,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:18" (1/1) ... [2022-07-22 23:47:18,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:18" (1/1) ... [2022-07-22 23:47:18,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:47:18,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:47:18,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:47:18,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:47:18,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:18" (1/1) ... [2022-07-22 23:47:18,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:47:18,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:47:18,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 23:47:18,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 23:47:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-22 23:47:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-22 23:47:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-22 23:47:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-22 23:47:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-22 23:47:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-22 23:47:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-22 23:47:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:47:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-22 23:47:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:47:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-22 23:47:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-22 23:47:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-07-22 23:47:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-07-22 23:47:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-22 23:47:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-22 23:47:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-07-22 23:47:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-07-22 23:47:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:47:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:47:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure pull_skb [2022-07-22 23:47:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure pull_skb [2022-07-22 23:47:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-22 23:47:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-22 23:47:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure free_skb_pool [2022-07-22 23:47:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure free_skb_pool [2022-07-22 23:47:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-22 23:47:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-22 23:47:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:47:18,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:47:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-07-22 23:47:18,831 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-07-22 23:47:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-07-22 23:47:18,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-07-22 23:47:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-07-22 23:47:18,832 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-07-22 23:47:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-22 23:47:18,832 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-22 23:47:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 23:47:18,832 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 23:47:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-22 23:47:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-22 23:47:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-22 23:47:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-22 23:47:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:47:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure fill_skb_pool [2022-07-22 23:47:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_skb_pool [2022-07-22 23:47:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-22 23:47:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-22 23:47:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:47:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-22 23:47:18,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-22 23:47:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-22 23:47:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-22 23:47:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-22 23:47:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-22 23:47:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_set_mac_address [2022-07-22 23:47:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_set_mac_address [2022-07-22 23:47:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-22 23:47:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-22 23:47:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-22 23:47:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:47:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-22 23:47:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:47:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-22 23:47:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 23:47:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-22 23:47:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-22 23:47:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_set_multicast [2022-07-22 23:47:18,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_set_multicast [2022-07-22 23:47:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-07-22 23:47:18,838 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-07-22 23:47:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:47:18,839 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:47:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-07-22 23:47:18,839 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-07-22 23:47:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-22 23:47:18,839 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-22 23:47:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-22 23:47:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-22 23:47:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-22 23:47:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-22 23:47:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2022-07-22 23:47:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2022-07-22 23:47:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure __printk_ratelimit [2022-07-22 23:47:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __printk_ratelimit [2022-07-22 23:47:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-22 23:47:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-22 23:47:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-22 23:47:18,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-22 23:47:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_tx_timeout [2022-07-22 23:47:18,845 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_tx_timeout [2022-07-22 23:47:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-22 23:47:18,846 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-22 23:47:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_ioctl [2022-07-22 23:47:18,846 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_ioctl [2022-07-22 23:47:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 23:47:18,846 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 23:47:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-22 23:47:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-22 23:47:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-22 23:47:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-22 23:47:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-22 23:47:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-22 23:47:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-22 23:47:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-22 23:47:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:47:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:47:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_reset [2022-07-22 23:47:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_reset [2022-07-22 23:47:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-22 23:47:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-22 23:47:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-22 23:47:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-22 23:47:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:47:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:47:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_disconnect [2022-07-22 23:47:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_disconnect [2022-07-22 23:47:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:47:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-07-22 23:47:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-07-22 23:47:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:47:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:47:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-22 23:47:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-22 23:47:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-22 23:47:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-07-22 23:47:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-07-22 23:47:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-07-22 23:47:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-07-22 23:47:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-22 23:47:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-22 23:47:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2022-07-22 23:47:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2022-07-22 23:47:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-22 23:47:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-22 23:47:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-22 23:47:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2022-07-22 23:47:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2022-07-22 23:47:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:47:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:47:19,224 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:47:19,226 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:47:19,440 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-22 23:47:37,396 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:47:37,412 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:47:37,413 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 23:47:37,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:47:37 BoogieIcfgContainer [2022-07-22 23:47:37,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:47:37,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:47:37,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:47:37,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:47:37,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:47:16" (1/3) ... [2022-07-22 23:47:37,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df725de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:47:37, skipping insertion in model container [2022-07-22 23:47:37,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:47:18" (2/3) ... [2022-07-22 23:47:37,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df725de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:47:37, skipping insertion in model container [2022-07-22 23:47:37,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:47:37" (3/3) ... [2022-07-22 23:47:37,422 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-07-22 23:47:37,433 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:47:37,433 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:47:37,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:47:37,517 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@73e778ed, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2ff31695 [2022-07-22 23:47:37,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:47:37,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 605 states have (on average 1.3305785123966942) internal successors, (805), 621 states have internal predecessors, (805), 188 states have call successors, (188), 55 states have call predecessors, (188), 54 states have return successors, (183), 181 states have call predecessors, (183), 183 states have call successors, (183) [2022-07-22 23:47:37,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 23:47:37,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:37,533 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:47:37,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:37,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:37,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1627128050, now seen corresponding path program 1 times [2022-07-22 23:47:37,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:47:37,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540690532] [2022-07-22 23:47:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:37,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:47:37,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:47:37,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:47:37,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 23:47:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:38,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:47:38,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:47:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 23:47:38,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:47:38,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:47:38,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540690532] [2022-07-22 23:47:38,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540690532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:38,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:38,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:47:38,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128385250] [2022-07-22 23:47:38,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:38,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:47:38,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:47:38,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:47:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:47:38,320 INFO L87 Difference]: Start difference. First operand has 849 states, 605 states have (on average 1.3305785123966942) internal successors, (805), 621 states have internal predecessors, (805), 188 states have call successors, (188), 55 states have call predecessors, (188), 54 states have return successors, (183), 181 states have call predecessors, (183), 183 states have call successors, (183) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 23:47:38,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:38,477 INFO L93 Difference]: Finished difference Result 1694 states and 2383 transitions. [2022-07-22 23:47:38,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:47:38,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-07-22 23:47:38,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:38,503 INFO L225 Difference]: With dead ends: 1694 [2022-07-22 23:47:38,503 INFO L226 Difference]: Without dead ends: 838 [2022-07-22 23:47:38,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:47:38,515 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 0 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:38,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2328 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:47:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-07-22 23:47:38,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2022-07-22 23:47:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 601 states have (on average 1.3094841930116472) internal successors, (787), 610 states have internal predecessors, (787), 183 states have call successors, (183), 54 states have call predecessors, (183), 53 states have return successors, (182), 180 states have call predecessors, (182), 182 states have call successors, (182) [2022-07-22 23:47:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1152 transitions. [2022-07-22 23:47:38,620 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1152 transitions. Word has length 56 [2022-07-22 23:47:38,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:38,621 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1152 transitions. [2022-07-22 23:47:38,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 23:47:38,622 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1152 transitions. [2022-07-22 23:47:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 23:47:38,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:38,625 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:47:38,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-22 23:47:38,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:47:38,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:38,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:38,841 INFO L85 PathProgramCache]: Analyzing trace with hash -847093427, now seen corresponding path program 1 times [2022-07-22 23:47:38,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:47:38,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034932793] [2022-07-22 23:47:38,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:38,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:47:38,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:47:38,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:47:38,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 23:47:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:39,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:47:39,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:47:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 23:47:39,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:47:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 23:47:39,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:47:39,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034932793] [2022-07-22 23:47:39,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034932793] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:47:39,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:47:39,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-22 23:47:39,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224506612] [2022-07-22 23:47:39,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:47:39,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:47:39,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:47:39,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:47:39,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:47:39,682 INFO L87 Difference]: Start difference. First operand 838 states and 1152 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 23:47:39,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:39,915 INFO L93 Difference]: Finished difference Result 1661 states and 2285 transitions. [2022-07-22 23:47:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:47:39,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-07-22 23:47:39,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:39,931 INFO L225 Difference]: With dead ends: 1661 [2022-07-22 23:47:39,931 INFO L226 Difference]: Without dead ends: 841 [2022-07-22 23:47:39,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:47:39,935 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 0 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3446 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:39,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3446 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 23:47:39,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-07-22 23:47:39,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 841. [2022-07-22 23:47:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 604 states have (on average 1.3079470198675496) internal successors, (790), 613 states have internal predecessors, (790), 183 states have call successors, (183), 54 states have call predecessors, (183), 53 states have return successors, (182), 180 states have call predecessors, (182), 182 states have call successors, (182) [2022-07-22 23:47:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1155 transitions. [2022-07-22 23:47:39,982 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1155 transitions. Word has length 57 [2022-07-22 23:47:39,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:39,983 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1155 transitions. [2022-07-22 23:47:39,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 23:47:39,983 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1155 transitions. [2022-07-22 23:47:39,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-22 23:47:39,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:39,991 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:47:40,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-22 23:47:40,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:47:40,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2143207346, now seen corresponding path program 2 times [2022-07-22 23:47:40,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:47:40,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991846672] [2022-07-22 23:47:40,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:47:40,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:47:40,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:47:40,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:47:40,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-22 23:47:40,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:47:40,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:47:40,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:47:40,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:47:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 23:47:40,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:47:40,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:47:40,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991846672] [2022-07-22 23:47:40,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991846672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:40,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:40,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:47:40,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279936612] [2022-07-22 23:47:40,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:40,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:47:40,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:47:40,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:47:40,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:47:40,858 INFO L87 Difference]: Start difference. First operand 841 states and 1155 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 23:47:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:41,035 INFO L93 Difference]: Finished difference Result 2460 states and 3386 transitions. [2022-07-22 23:47:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:47:41,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2022-07-22 23:47:41,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:41,044 INFO L225 Difference]: With dead ends: 2460 [2022-07-22 23:47:41,044 INFO L226 Difference]: Without dead ends: 1641 [2022-07-22 23:47:41,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:47:41,049 INFO L413 NwaCegarLoop]: 1332 mSDtfsCounter, 1104 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:41,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 2464 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 23:47:41,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2022-07-22 23:47:41,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1641. [2022-07-22 23:47:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1177 states have (on average 1.3118096856414614) internal successors, (1544), 1195 states have internal predecessors, (1544), 357 states have call successors, (357), 107 states have call predecessors, (357), 106 states have return successors, (356), 352 states have call predecessors, (356), 356 states have call successors, (356) [2022-07-22 23:47:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2257 transitions. [2022-07-22 23:47:41,116 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2257 transitions. Word has length 60 [2022-07-22 23:47:41,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:41,117 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2257 transitions. [2022-07-22 23:47:41,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 23:47:41,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2257 transitions. [2022-07-22 23:47:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 23:47:41,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:41,120 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:47:41,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-22 23:47:41,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:47:41,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:41,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:41,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1025478499, now seen corresponding path program 1 times [2022-07-22 23:47:41,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:47:41,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848495660] [2022-07-22 23:47:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:41,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:47:41,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:47:41,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:47:41,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-22 23:47:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:41,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:47:41,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:47:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 23:47:42,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:47:42,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:47:42,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848495660] [2022-07-22 23:47:42,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848495660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:42,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:42,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:47:42,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307635949] [2022-07-22 23:47:42,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:42,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:47:42,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:47:42,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:47:42,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:47:42,168 INFO L87 Difference]: Start difference. First operand 1641 states and 2257 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:47:42,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:42,511 INFO L93 Difference]: Finished difference Result 4876 states and 6735 transitions. [2022-07-22 23:47:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:47:42,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-22 23:47:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:42,527 INFO L225 Difference]: With dead ends: 4876 [2022-07-22 23:47:42,528 INFO L226 Difference]: Without dead ends: 3251 [2022-07-22 23:47:42,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:47:42,534 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1120 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:42,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 5148 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:47:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2022-07-22 23:47:42,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 3243. [2022-07-22 23:47:42,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 2323 states have (on average 1.3125269048643995) internal successors, (3049), 2359 states have internal predecessors, (3049), 707 states have call successors, (707), 213 states have call predecessors, (707), 212 states have return successors, (726), 698 states have call predecessors, (726), 706 states have call successors, (726) [2022-07-22 23:47:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4482 transitions. [2022-07-22 23:47:42,627 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4482 transitions. Word has length 70 [2022-07-22 23:47:42,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:42,627 INFO L495 AbstractCegarLoop]: Abstraction has 3243 states and 4482 transitions. [2022-07-22 23:47:42,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:47:42,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4482 transitions. [2022-07-22 23:47:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 23:47:42,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:42,635 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 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] [2022-07-22 23:47:42,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-22 23:47:42,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:47:42,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:42,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:42,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1319378965, now seen corresponding path program 1 times [2022-07-22 23:47:42,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:47:42,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021382249] [2022-07-22 23:47:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:42,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:47:42,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:47:42,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:47:42,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-22 23:47:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:43,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:47:43,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:47:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-22 23:47:43,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:47:43,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:47:43,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021382249] [2022-07-22 23:47:43,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021382249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:43,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:43,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:47:43,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296212699] [2022-07-22 23:47:43,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:43,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:47:43,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:47:43,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:47:43,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:47:43,814 INFO L87 Difference]: Start difference. First operand 3243 states and 4482 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 23:47:44,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:44,082 INFO L93 Difference]: Finished difference Result 8380 states and 11536 transitions. [2022-07-22 23:47:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:47:44,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 157 [2022-07-22 23:47:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:44,110 INFO L225 Difference]: With dead ends: 8380 [2022-07-22 23:47:44,111 INFO L226 Difference]: Without dead ends: 5159 [2022-07-22 23:47:44,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:47:44,124 INFO L413 NwaCegarLoop]: 1361 mSDtfsCounter, 683 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:44,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 2463 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:47:44,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2022-07-22 23:47:44,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 5148. [2022-07-22 23:47:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5148 states, 3666 states have (on average 1.3120567375886525) internal successors, (4810), 3718 states have internal predecessors, (4810), 1120 states have call successors, (1120), 362 states have call predecessors, (1120), 361 states have return successors, (1139), 1107 states have call predecessors, (1139), 1119 states have call successors, (1139) [2022-07-22 23:47:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5148 states to 5148 states and 7069 transitions. [2022-07-22 23:47:44,321 INFO L78 Accepts]: Start accepts. Automaton has 5148 states and 7069 transitions. Word has length 157 [2022-07-22 23:47:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:44,321 INFO L495 AbstractCegarLoop]: Abstraction has 5148 states and 7069 transitions. [2022-07-22 23:47:44,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 23:47:44,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5148 states and 7069 transitions. [2022-07-22 23:47:44,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-22 23:47:44,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:44,333 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:47:44,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-22 23:47:44,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:47:44,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:44,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:44,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1883424024, now seen corresponding path program 1 times [2022-07-22 23:47:44,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:47:44,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042759353] [2022-07-22 23:47:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:44,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:47:44,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:47:44,563 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:47:44,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-22 23:47:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:45,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 1429 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:47:45,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:47:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-22 23:47:45,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:47:45,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:47:45,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042759353] [2022-07-22 23:47:45,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042759353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:45,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:45,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:47:45,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002962939] [2022-07-22 23:47:45,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:45,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:47:45,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:47:45,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:47:45,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:47:45,517 INFO L87 Difference]: Start difference. First operand 5148 states and 7069 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 23:47:45,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:45,828 INFO L93 Difference]: Finished difference Result 12396 states and 16976 transitions. [2022-07-22 23:47:45,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:47:45,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 173 [2022-07-22 23:47:45,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:45,859 INFO L225 Difference]: With dead ends: 12396 [2022-07-22 23:47:45,860 INFO L226 Difference]: Without dead ends: 7277 [2022-07-22 23:47:45,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:47:45,877 INFO L413 NwaCegarLoop]: 1770 mSDtfsCounter, 846 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:45,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 2755 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:47:45,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2022-07-22 23:47:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 7266. [2022-07-22 23:47:46,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 5176 states have (on average 1.3096986089644513) internal successors, (6779), 5244 states have internal predecessors, (6779), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 537 states have return successors, (1575), 1535 states have call predecessors, (1575), 1551 states have call successors, (1575) [2022-07-22 23:47:46,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 9906 transitions. [2022-07-22 23:47:46,077 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 9906 transitions. Word has length 173 [2022-07-22 23:47:46,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:46,077 INFO L495 AbstractCegarLoop]: Abstraction has 7266 states and 9906 transitions. [2022-07-22 23:47:46,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 23:47:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 9906 transitions. [2022-07-22 23:47:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 23:47:46,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:46,091 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 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] [2022-07-22 23:47:46,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-22 23:47:46,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:47:46,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:46,312 INFO L85 PathProgramCache]: Analyzing trace with hash 857840969, now seen corresponding path program 1 times [2022-07-22 23:47:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:47:46,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414298323] [2022-07-22 23:47:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:46,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:47:46,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:47:46,315 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:47:46,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-22 23:47:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:47,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:47:47,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:47:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-22 23:47:47,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:47:47,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:47:47,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414298323] [2022-07-22 23:47:47,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414298323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:47,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:47,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:47:47,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636264325] [2022-07-22 23:47:47,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:47,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:47:47,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:47:47,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:47:47,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:47:47,366 INFO L87 Difference]: Start difference. First operand 7266 states and 9906 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:47:48,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:48,110 INFO L93 Difference]: Finished difference Result 17052 states and 23214 transitions. [2022-07-22 23:47:48,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:47:48,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 189 [2022-07-22 23:47:48,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:48,181 INFO L225 Difference]: With dead ends: 17052 [2022-07-22 23:47:48,191 INFO L226 Difference]: Without dead ends: 9815 [2022-07-22 23:47:48,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:47:48,217 INFO L413 NwaCegarLoop]: 1956 mSDtfsCounter, 1086 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 4774 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:48,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 4774 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 23:47:48,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9815 states. [2022-07-22 23:47:48,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9815 to 7274. [2022-07-22 23:47:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 5184 states have (on average 1.3092206790123457) internal successors, (6787), 5252 states have internal predecessors, (6787), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 537 states have return successors, (1575), 1535 states have call predecessors, (1575), 1551 states have call successors, (1575) [2022-07-22 23:47:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 9914 transitions. [2022-07-22 23:47:48,646 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 9914 transitions. Word has length 189 [2022-07-22 23:47:48,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:48,647 INFO L495 AbstractCegarLoop]: Abstraction has 7274 states and 9914 transitions. [2022-07-22 23:47:48,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:47:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 9914 transitions. [2022-07-22 23:47:48,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-22 23:47:48,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:48,664 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:47:48,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-22 23:47:48,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:47:48,884 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:48,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:48,884 INFO L85 PathProgramCache]: Analyzing trace with hash 988618010, now seen corresponding path program 1 times [2022-07-22 23:47:48,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:47:48,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716765386] [2022-07-22 23:47:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:48,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:47:48,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:47:48,887 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:47:48,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-22 23:47:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:49,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 23:47:49,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:47:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-22 23:47:50,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:47:50,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:47:50,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716765386] [2022-07-22 23:47:50,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716765386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:50,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:50,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:47:50,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46936585] [2022-07-22 23:47:50,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:50,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:47:50,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:47:50,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:47:50,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:47:50,091 INFO L87 Difference]: Start difference. First operand 7274 states and 9914 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 23:47:52,339 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 [] [2022-07-22 23:47:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:52,633 INFO L93 Difference]: Finished difference Result 15558 states and 21411 transitions. [2022-07-22 23:47:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:47:52,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 242 [2022-07-22 23:47:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:52,663 INFO L225 Difference]: With dead ends: 15558 [2022-07-22 23:47:52,664 INFO L226 Difference]: Without dead ends: 8313 [2022-07-22 23:47:52,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:47:52,686 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 560 mSDsluCounter, 5461 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 124 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 6993 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:52,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 6993 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 23:47:52,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8313 states. [2022-07-22 23:47:52,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8313 to 7294. [2022-07-22 23:47:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7294 states, 5200 states have (on average 1.3082692307692307) internal successors, (6803), 5268 states have internal predecessors, (6803), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 541 states have return successors, (1587), 1539 states have call predecessors, (1587), 1551 states have call successors, (1587) [2022-07-22 23:47:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7294 states to 7294 states and 9942 transitions. [2022-07-22 23:47:52,955 INFO L78 Accepts]: Start accepts. Automaton has 7294 states and 9942 transitions. Word has length 242 [2022-07-22 23:47:52,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:52,955 INFO L495 AbstractCegarLoop]: Abstraction has 7294 states and 9942 transitions. [2022-07-22 23:47:52,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 23:47:52,956 INFO L276 IsEmpty]: Start isEmpty. Operand 7294 states and 9942 transitions. [2022-07-22 23:47:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-22 23:47:52,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:52,972 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 23:47:53,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-22 23:47:53,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:47:53,184 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:53,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:53,184 INFO L85 PathProgramCache]: Analyzing trace with hash 498099036, now seen corresponding path program 1 times [2022-07-22 23:47:53,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:47:53,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172246893] [2022-07-22 23:47:53,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:53,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:47:53,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:47:53,188 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:47:53,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-22 23:47:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:54,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 23:47:54,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:47:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-22 23:47:54,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:47:54,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:47:54,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172246893] [2022-07-22 23:47:54,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172246893] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:54,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:54,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:47:54,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398907365] [2022-07-22 23:47:54,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:54,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:47:54,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:47:54,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:47:54,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:47:54,468 INFO L87 Difference]: Start difference. First operand 7294 states and 9942 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 23:47:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:54,789 INFO L93 Difference]: Finished difference Result 14631 states and 19935 transitions. [2022-07-22 23:47:54,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:47:54,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) Word has length 248 [2022-07-22 23:47:54,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:54,816 INFO L225 Difference]: With dead ends: 14631 [2022-07-22 23:47:54,816 INFO L226 Difference]: Without dead ends: 7366 [2022-07-22 23:47:54,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:47:54,838 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 2 mSDsluCounter, 6870 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8017 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:54,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8017 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 23:47:54,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7366 states. [2022-07-22 23:47:55,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7366 to 7318. [2022-07-22 23:47:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7318 states, 5220 states have (on average 1.307088122605364) internal successors, (6823), 5284 states have internal predecessors, (6823), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 545 states have return successors, (1595), 1547 states have call predecessors, (1595), 1551 states have call successors, (1595) [2022-07-22 23:47:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7318 states to 7318 states and 9970 transitions. [2022-07-22 23:47:55,046 INFO L78 Accepts]: Start accepts. Automaton has 7318 states and 9970 transitions. Word has length 248 [2022-07-22 23:47:55,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:55,046 INFO L495 AbstractCegarLoop]: Abstraction has 7318 states and 9970 transitions. [2022-07-22 23:47:55,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 23:47:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 7318 states and 9970 transitions. [2022-07-22 23:47:55,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-22 23:47:55,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:55,062 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1] [2022-07-22 23:47:55,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-22 23:47:55,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:47:55,288 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:55,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:55,288 INFO L85 PathProgramCache]: Analyzing trace with hash -565486566, now seen corresponding path program 2 times [2022-07-22 23:47:55,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:47:55,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624625341] [2022-07-22 23:47:55,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:47:55,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:47:55,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:47:55,291 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:47:55,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-22 23:48:01,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:48:01,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:48:01,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:48:01,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:48:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 96 proven. 7 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-22 23:48:02,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:48:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-07-22 23:48:03,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:48:03,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624625341] [2022-07-22 23:48:03,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624625341] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:48:03,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:48:03,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-22 23:48:03,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148090578] [2022-07-22 23:48:03,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:48:03,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:48:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:48:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:48:03,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:48:03,076 INFO L87 Difference]: Start difference. First operand 7318 states and 9970 transitions. Second operand has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 4 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-07-22 23:48:11,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:11,536 INFO L93 Difference]: Finished difference Result 43757 states and 59628 transitions. [2022-07-22 23:48:11,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:48:11,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 4 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 254 [2022-07-22 23:48:11,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:11,721 INFO L225 Difference]: With dead ends: 43757 [2022-07-22 23:48:11,722 INFO L226 Difference]: Without dead ends: 43748 [2022-07-22 23:48:11,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:48:11,739 INFO L413 NwaCegarLoop]: 2964 mSDtfsCounter, 6633 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 1282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6633 SdHoareTripleChecker+Valid, 7159 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1282 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:11,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6633 Valid, 7159 Invalid, 3824 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1282 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-07-22 23:48:11,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43748 states. [2022-07-22 23:48:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43748 to 43678. [2022-07-22 23:48:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43678 states, 31140 states have (on average 1.3082530507385999) internal successors, (40739), 31540 states have internal predecessors, (40739), 9272 states have call successors, (9272), 3218 states have call predecessors, (9272), 3265 states have return successors, (9535), 9231 states have call predecessors, (9535), 9271 states have call successors, (9535) [2022-07-22 23:48:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43678 states to 43678 states and 59546 transitions. [2022-07-22 23:48:13,208 INFO L78 Accepts]: Start accepts. Automaton has 43678 states and 59546 transitions. Word has length 254 [2022-07-22 23:48:13,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:13,208 INFO L495 AbstractCegarLoop]: Abstraction has 43678 states and 59546 transitions. [2022-07-22 23:48:13,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 4 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-07-22 23:48:13,209 INFO L276 IsEmpty]: Start isEmpty. Operand 43678 states and 59546 transitions. [2022-07-22 23:48:13,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-22 23:48:13,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:13,293 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1] [2022-07-22 23:48:13,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-22 23:48:13,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:48:13,516 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:13,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:13,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1845350244, now seen corresponding path program 1 times [2022-07-22 23:48:13,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:48:13,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189131813] [2022-07-22 23:48:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:13,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:48:13,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:48:13,519 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:48:13,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-22 23:48:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:14,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:48:14,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:48:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-22 23:48:14,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:48:14,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:48:14,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189131813] [2022-07-22 23:48:14,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189131813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:14,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:48:14,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:48:14,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497358010] [2022-07-22 23:48:14,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:14,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:48:14,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:48:14,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:48:14,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:48:14,674 INFO L87 Difference]: Start difference. First operand 43678 states and 59546 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 23:48:16,818 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:48:19,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:48:21,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:21,252 INFO L93 Difference]: Finished difference Result 134180 states and 193049 transitions. [2022-07-22 23:48:21,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:48:21,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 254 [2022-07-22 23:48:21,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:21,687 INFO L225 Difference]: With dead ends: 134180 [2022-07-22 23:48:21,687 INFO L226 Difference]: Without dead ends: 90531 [2022-07-22 23:48:21,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:48:21,785 INFO L413 NwaCegarLoop]: 1755 mSDtfsCounter, 1556 mSDsluCounter, 3140 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 191 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 4895 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:21,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 4895 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-07-22 23:48:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90531 states. [2022-07-22 23:48:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90531 to 43726. [2022-07-22 23:48:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43726 states, 31188 states have (on average 1.30777863280749) internal successors, (40787), 31588 states have internal predecessors, (40787), 9272 states have call successors, (9272), 3218 states have call predecessors, (9272), 3265 states have return successors, (9535), 9231 states have call predecessors, (9535), 9271 states have call successors, (9535) [2022-07-22 23:48:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43726 states to 43726 states and 59594 transitions. [2022-07-22 23:48:24,133 INFO L78 Accepts]: Start accepts. Automaton has 43726 states and 59594 transitions. Word has length 254 [2022-07-22 23:48:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:24,133 INFO L495 AbstractCegarLoop]: Abstraction has 43726 states and 59594 transitions. [2022-07-22 23:48:24,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 23:48:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 43726 states and 59594 transitions. [2022-07-22 23:48:24,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-22 23:48:24,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:24,189 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:48:24,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-22 23:48:24,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:48:24,404 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2126872004, now seen corresponding path program 1 times [2022-07-22 23:48:24,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:48:24,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821991891] [2022-07-22 23:48:24,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:24,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:48:24,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:48:24,416 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:48:24,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-22 23:48:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:25,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 23:48:25,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:48:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-22 23:48:25,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:48:25,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:48:25,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821991891] [2022-07-22 23:48:25,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821991891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:25,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:48:25,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:48:25,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555583460] [2022-07-22 23:48:25,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:25,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:48:25,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:48:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:48:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:48:25,808 INFO L87 Difference]: Start difference. First operand 43726 states and 59594 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-22 23:48:27,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:48:30,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:48:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:30,994 INFO L93 Difference]: Finished difference Result 87783 states and 119655 transitions. [2022-07-22 23:48:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:48:30,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) Word has length 278 [2022-07-22 23:48:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:31,143 INFO L225 Difference]: With dead ends: 87783 [2022-07-22 23:48:31,143 INFO L226 Difference]: Without dead ends: 44086 [2022-07-22 23:48:31,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:48:31,243 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 0 mSDsluCounter, 5733 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6882 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:31,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6882 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-07-22 23:48:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44086 states. [2022-07-22 23:48:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44086 to 43846. [2022-07-22 23:48:32,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43846 states, 31284 states have (on average 1.306834164429101) internal successors, (40883), 31660 states have internal predecessors, (40883), 9272 states have call successors, (9272), 3218 states have call predecessors, (9272), 3289 states have return successors, (9631), 9279 states have call predecessors, (9631), 9271 states have call successors, (9631) [2022-07-22 23:48:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43846 states to 43846 states and 59786 transitions. [2022-07-22 23:48:32,921 INFO L78 Accepts]: Start accepts. Automaton has 43846 states and 59786 transitions. Word has length 278 [2022-07-22 23:48:32,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:32,922 INFO L495 AbstractCegarLoop]: Abstraction has 43846 states and 59786 transitions. [2022-07-22 23:48:32,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-22 23:48:32,922 INFO L276 IsEmpty]: Start isEmpty. Operand 43846 states and 59786 transitions. [2022-07-22 23:48:32,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-07-22 23:48:32,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:32,989 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:48:33,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-22 23:48:33,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:48:33,208 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:33,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:33,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1234613562, now seen corresponding path program 2 times [2022-07-22 23:48:33,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:48:33,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098724303] [2022-07-22 23:48:33,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:48:33,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:48:33,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:48:33,211 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:48:33,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-22 23:48:33,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:48:33,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:48:33,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:48:33,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:48:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-07-22 23:48:33,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:48:33,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:48:33,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098724303] [2022-07-22 23:48:33,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098724303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:33,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:48:33,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:48:33,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841176077] [2022-07-22 23:48:33,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:33,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:48:33,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:48:33,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:48:33,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:48:33,880 INFO L87 Difference]: Start difference. First operand 43846 states and 59786 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-07-22 23:48:36,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:36,643 INFO L93 Difference]: Finished difference Result 123343 states and 172410 transitions. [2022-07-22 23:48:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:48:36,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 284 [2022-07-22 23:48:36,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:36,981 INFO L225 Difference]: With dead ends: 123343 [2022-07-22 23:48:36,982 INFO L226 Difference]: Without dead ends: 79526 [2022-07-22 23:48:37,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:48:37,112 INFO L413 NwaCegarLoop]: 1841 mSDtfsCounter, 1654 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 4130 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:37,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 4130 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 23:48:37,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79526 states. [2022-07-22 23:48:39,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79526 to 43878. [2022-07-22 23:48:39,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43878 states, 31316 states have (on average 1.30652062843275) internal successors, (40915), 31692 states have internal predecessors, (40915), 9272 states have call successors, (9272), 3218 states have call predecessors, (9272), 3289 states have return successors, (9631), 9279 states have call predecessors, (9631), 9271 states have call successors, (9631) [2022-07-22 23:48:39,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43878 states to 43878 states and 59818 transitions. [2022-07-22 23:48:39,242 INFO L78 Accepts]: Start accepts. Automaton has 43878 states and 59818 transitions. Word has length 284 [2022-07-22 23:48:39,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:39,243 INFO L495 AbstractCegarLoop]: Abstraction has 43878 states and 59818 transitions. [2022-07-22 23:48:39,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-07-22 23:48:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 43878 states and 59818 transitions. [2022-07-22 23:48:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-07-22 23:48:39,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:39,316 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:48:39,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-22 23:48:39,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:48:39,521 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:39,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:39,521 INFO L85 PathProgramCache]: Analyzing trace with hash 412391079, now seen corresponding path program 1 times [2022-07-22 23:48:39,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:48:39,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502525987] [2022-07-22 23:48:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:39,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:48:39,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:48:39,524 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:48:39,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-22 23:48:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:40,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:48:40,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:48:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-22 23:48:40,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:48:40,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:48:40,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502525987] [2022-07-22 23:48:40,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502525987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:40,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:48:40,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:48:40,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714565303] [2022-07-22 23:48:40,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:40,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:48:40,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:48:40,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:48:40,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:48:40,748 INFO L87 Difference]: Start difference. First operand 43878 states and 59818 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 23:48:41,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:41,738 INFO L93 Difference]: Finished difference Result 68877 states and 93860 transitions. [2022-07-22 23:48:41,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:48:41,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 251 [2022-07-22 23:48:41,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:41,831 INFO L225 Difference]: With dead ends: 68877 [2022-07-22 23:48:41,831 INFO L226 Difference]: Without dead ends: 25022 [2022-07-22 23:48:42,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:48:42,146 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 6 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:42,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2295 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 23:48:42,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25022 states. [2022-07-22 23:48:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25022 to 25011. [2022-07-22 23:48:42,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25011 states, 17837 states have (on average 1.306721982396143) internal successors, (23308), 18049 states have internal predecessors, (23308), 5282 states have call successors, (5282), 1856 states have call predecessors, (5282), 1891 states have return successors, (5461), 5279 states have call predecessors, (5461), 5281 states have call successors, (5461) [2022-07-22 23:48:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25011 states to 25011 states and 34051 transitions. [2022-07-22 23:48:42,882 INFO L78 Accepts]: Start accepts. Automaton has 25011 states and 34051 transitions. Word has length 251 [2022-07-22 23:48:42,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:42,883 INFO L495 AbstractCegarLoop]: Abstraction has 25011 states and 34051 transitions. [2022-07-22 23:48:42,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 23:48:42,883 INFO L276 IsEmpty]: Start isEmpty. Operand 25011 states and 34051 transitions. [2022-07-22 23:48:42,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-22 23:48:42,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:42,914 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:48:42,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-22 23:48:43,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:48:43,115 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:43,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:43,115 INFO L85 PathProgramCache]: Analyzing trace with hash 149240916, now seen corresponding path program 1 times [2022-07-22 23:48:43,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:48:43,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23169633] [2022-07-22 23:48:43,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:43,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:48:43,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:48:43,118 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) [2022-07-22 23:48:43,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-22 23:48:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:44,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:48:44,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:48:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-22 23:48:44,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:48:44,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:48:44,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23169633] [2022-07-22 23:48:44,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23169633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:44,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:48:44,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:48:44,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610926709] [2022-07-22 23:48:44,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:44,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:48:44,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:48:44,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:48:44,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:48:44,161 INFO L87 Difference]: Start difference. First operand 25011 states and 34051 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-22 23:48:45,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:45,753 INFO L93 Difference]: Finished difference Result 55163 states and 74977 transitions. [2022-07-22 23:48:45,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:48:45,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 266 [2022-07-22 23:48:45,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:45,855 INFO L225 Difference]: With dead ends: 55163 [2022-07-22 23:48:45,855 INFO L226 Difference]: Without dead ends: 33029 [2022-07-22 23:48:45,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:48:45,908 INFO L413 NwaCegarLoop]: 1960 mSDtfsCounter, 1086 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 4779 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:45,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 4779 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 23:48:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33029 states. [2022-07-22 23:48:46,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33029 to 24987. [2022-07-22 23:48:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24987 states, 17813 states have (on average 1.306461573008477) internal successors, (23272), 18025 states have internal predecessors, (23272), 5282 states have call successors, (5282), 1856 states have call predecessors, (5282), 1891 states have return successors, (5461), 5279 states have call predecessors, (5461), 5281 states have call successors, (5461) [2022-07-22 23:48:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24987 states to 24987 states and 34015 transitions. [2022-07-22 23:48:46,973 INFO L78 Accepts]: Start accepts. Automaton has 24987 states and 34015 transitions. Word has length 266 [2022-07-22 23:48:46,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:46,974 INFO L495 AbstractCegarLoop]: Abstraction has 24987 states and 34015 transitions. [2022-07-22 23:48:46,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-22 23:48:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 24987 states and 34015 transitions. [2022-07-22 23:48:46,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-22 23:48:46,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:46,995 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:48:47,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-22 23:48:47,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:48:47,195 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:47,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:47,196 INFO L85 PathProgramCache]: Analyzing trace with hash -440204827, now seen corresponding path program 1 times [2022-07-22 23:48:47,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:48:47,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625631185] [2022-07-22 23:48:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:47,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:48:47,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:48:47,199 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) [2022-07-22 23:48:47,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-22 23:48:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:48,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1887 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 23:48:48,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:48:48,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 23:48:49,036 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 15 treesize of output 7 [2022-07-22 23:48:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-22 23:48:49,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:48:49,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:48:49,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625631185] [2022-07-22 23:48:49,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625631185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:49,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:48:49,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:48:49,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546313058] [2022-07-22 23:48:49,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:49,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:48:49,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:48:49,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:48:49,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:48:49,065 INFO L87 Difference]: Start difference. First operand 24987 states and 34015 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2022-07-22 23:48:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:49,930 INFO L93 Difference]: Finished difference Result 50911 states and 69097 transitions. [2022-07-22 23:48:49,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:48:49,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 306 [2022-07-22 23:48:49,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:50,026 INFO L225 Difference]: With dead ends: 50911 [2022-07-22 23:48:50,026 INFO L226 Difference]: Without dead ends: 25953 [2022-07-22 23:48:50,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 299 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:48:50,079 INFO L413 NwaCegarLoop]: 1167 mSDtfsCounter, 3 mSDsluCounter, 2245 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3412 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:50,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3412 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 90 Unchecked, 0.0s Time] [2022-07-22 23:48:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25953 states. [2022-07-22 23:48:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25953 to 25953. [2022-07-22 23:48:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25953 states, 18401 states have (on average 1.2966686593119938) internal successors, (23860), 18613 states have internal predecessors, (23860), 5492 states have call successors, (5492), 2024 states have call predecessors, (5492), 2059 states have return successors, (5671), 5489 states have call predecessors, (5671), 5491 states have call successors, (5671) [2022-07-22 23:48:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25953 states to 25953 states and 35023 transitions. [2022-07-22 23:48:51,004 INFO L78 Accepts]: Start accepts. Automaton has 25953 states and 35023 transitions. Word has length 306 [2022-07-22 23:48:51,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:51,005 INFO L495 AbstractCegarLoop]: Abstraction has 25953 states and 35023 transitions. [2022-07-22 23:48:51,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2022-07-22 23:48:51,005 INFO L276 IsEmpty]: Start isEmpty. Operand 25953 states and 35023 transitions. [2022-07-22 23:48:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-07-22 23:48:51,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:51,025 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:48:51,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-22 23:48:51,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:48:51,225 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:51,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:51,226 INFO L85 PathProgramCache]: Analyzing trace with hash -510763503, now seen corresponding path program 1 times [2022-07-22 23:48:51,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:48:51,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883064217] [2022-07-22 23:48:51,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:51,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:48:51,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:48:51,229 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) [2022-07-22 23:48:51,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-22 23:48:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:52,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 23:48:52,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:48:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-22 23:48:52,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:48:52,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:48:52,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883064217] [2022-07-22 23:48:52,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883064217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:52,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:48:52,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:48:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083050525] [2022-07-22 23:48:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:52,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:48:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:48:52,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:48:52,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:48:52,627 INFO L87 Difference]: Start difference. First operand 25953 states and 35023 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-22 23:48:55,754 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 [] [2022-07-22 23:48:56,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:56,520 INFO L93 Difference]: Finished difference Result 49065 states and 66219 transitions. [2022-07-22 23:48:56,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:48:56,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) Word has length 295 [2022-07-22 23:48:56,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:56,618 INFO L225 Difference]: With dead ends: 49065 [2022-07-22 23:48:56,619 INFO L226 Difference]: Without dead ends: 26127 [2022-07-22 23:48:56,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:48:56,670 INFO L413 NwaCegarLoop]: 1148 mSDtfsCounter, 0 mSDsluCounter, 5728 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6876 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:56,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6876 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 23:48:56,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26127 states. [2022-07-22 23:48:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26127 to 25977. [2022-07-22 23:48:57,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25977 states, 18425 states have (on average 1.296282225237449) internal successors, (23884), 18625 states have internal predecessors, (23884), 5492 states have call successors, (5492), 2024 states have call predecessors, (5492), 2059 states have return successors, (5671), 5501 states have call predecessors, (5671), 5491 states have call successors, (5671) [2022-07-22 23:48:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25977 states to 25977 states and 35047 transitions. [2022-07-22 23:48:57,720 INFO L78 Accepts]: Start accepts. Automaton has 25977 states and 35047 transitions. Word has length 295 [2022-07-22 23:48:57,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:57,721 INFO L495 AbstractCegarLoop]: Abstraction has 25977 states and 35047 transitions. [2022-07-22 23:48:57,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-22 23:48:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 25977 states and 35047 transitions. [2022-07-22 23:48:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-22 23:48:57,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:57,747 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:48:57,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-07-22 23:48:57,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:48:57,948 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:57,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:57,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1113645931, now seen corresponding path program 1 times [2022-07-22 23:48:57,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:48:57,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217525758] [2022-07-22 23:48:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:57,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:48:57,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:48:57,951 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) [2022-07-22 23:48:57,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-22 23:48:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:59,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:48:59,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:48:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-22 23:48:59,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:48:59,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:48:59,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217525758] [2022-07-22 23:48:59,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217525758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:59,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:48:59,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:48:59,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910171258] [2022-07-22 23:48:59,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:59,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:48:59,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:48:59,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:48:59,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:48:59,560 INFO L87 Difference]: Start difference. First operand 25977 states and 35047 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-22 23:49:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:49:00,445 INFO L93 Difference]: Finished difference Result 52219 states and 70543 transitions. [2022-07-22 23:49:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:49:00,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 307 [2022-07-22 23:49:00,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:49:00,518 INFO L225 Difference]: With dead ends: 52219 [2022-07-22 23:49:00,519 INFO L226 Difference]: Without dead ends: 26271 [2022-07-22 23:49:00,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:49:00,563 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 5 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3443 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:49:00,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3443 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:49:00,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26271 states. [2022-07-22 23:49:01,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26271 to 26019. [2022-07-22 23:49:01,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26019 states, 18467 states have (on average 1.2956083825201712) internal successors, (23926), 18667 states have internal predecessors, (23926), 5492 states have call successors, (5492), 2024 states have call predecessors, (5492), 2059 states have return successors, (5671), 5501 states have call predecessors, (5671), 5491 states have call successors, (5671) [2022-07-22 23:49:01,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26019 states to 26019 states and 35089 transitions. [2022-07-22 23:49:01,487 INFO L78 Accepts]: Start accepts. Automaton has 26019 states and 35089 transitions. Word has length 307 [2022-07-22 23:49:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:49:01,488 INFO L495 AbstractCegarLoop]: Abstraction has 26019 states and 35089 transitions. [2022-07-22 23:49:01,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-22 23:49:01,488 INFO L276 IsEmpty]: Start isEmpty. Operand 26019 states and 35089 transitions. [2022-07-22 23:49:01,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-07-22 23:49:01,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:49:01,508 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 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, 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] [2022-07-22 23:49:01,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-22 23:49:01,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:49:01,708 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:49:01,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:49:01,709 INFO L85 PathProgramCache]: Analyzing trace with hash -757439847, now seen corresponding path program 1 times [2022-07-22 23:49:01,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:49:01,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816266545] [2022-07-22 23:49:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:49:01,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:49:01,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:49:01,712 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) [2022-07-22 23:49:01,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-22 23:49:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:03,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1935 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 23:49:03,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:49:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-07-22 23:49:03,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:49:03,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:49:03,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816266545] [2022-07-22 23:49:03,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816266545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:49:03,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:49:03,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:49:03,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622518766] [2022-07-22 23:49:03,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:49:03,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:49:03,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:49:03,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:49:03,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:49:03,366 INFO L87 Difference]: Start difference. First operand 26019 states and 35089 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-22 23:49:05,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:07,278 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 [] [2022-07-22 23:49:07,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:49:07,920 INFO L93 Difference]: Finished difference Result 49191 states and 66345 transitions. [2022-07-22 23:49:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:49:07,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) Word has length 317 [2022-07-22 23:49:07,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:49:08,021 INFO L225 Difference]: With dead ends: 49191 [2022-07-22 23:49:08,021 INFO L226 Difference]: Without dead ends: 26193 [2022-07-22 23:49:08,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:49:08,082 INFO L413 NwaCegarLoop]: 1148 mSDtfsCounter, 0 mSDsluCounter, 5728 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6876 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:49:08,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6876 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-07-22 23:49:08,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26193 states. [2022-07-22 23:49:08,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26193 to 26043. [2022-07-22 23:49:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26043 states, 18491 states have (on average 1.2952247039100102) internal successors, (23950), 18679 states have internal predecessors, (23950), 5492 states have call successors, (5492), 2024 states have call predecessors, (5492), 2059 states have return successors, (5671), 5513 states have call predecessors, (5671), 5491 states have call successors, (5671) [2022-07-22 23:49:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26043 states to 26043 states and 35113 transitions. [2022-07-22 23:49:09,077 INFO L78 Accepts]: Start accepts. Automaton has 26043 states and 35113 transitions. Word has length 317 [2022-07-22 23:49:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:49:09,078 INFO L495 AbstractCegarLoop]: Abstraction has 26043 states and 35113 transitions. [2022-07-22 23:49:09,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-22 23:49:09,078 INFO L276 IsEmpty]: Start isEmpty. Operand 26043 states and 35113 transitions. [2022-07-22 23:49:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-07-22 23:49:09,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:49:09,101 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:49:09,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-22 23:49:09,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:49:09,302 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:49:09,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:49:09,303 INFO L85 PathProgramCache]: Analyzing trace with hash 814023899, now seen corresponding path program 1 times [2022-07-22 23:49:09,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:49:09,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757749815] [2022-07-22 23:49:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:49:09,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:49:09,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:49:09,306 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) [2022-07-22 23:49:09,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-22 23:49:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:11,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1952 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 23:49:11,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:49:11,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 23:49:11,505 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 15 treesize of output 7 [2022-07-22 23:49:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 145 proven. 1 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-22 23:49:11,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:49:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2022-07-22 23:49:11,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:49:11,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757749815] [2022-07-22 23:49:11,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757749815] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:49:11,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:49:11,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2022-07-22 23:49:11,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44249084] [2022-07-22 23:49:11,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:49:11,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:49:11,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:49:11,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:49:11,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:49:11,779 INFO L87 Difference]: Start difference. First operand 26043 states and 35113 transitions. Second operand has 7 states, 7 states have (on average 28.714285714285715) internal successors, (201), 7 states have internal predecessors, (201), 5 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (48), 5 states have call predecessors, (48), 5 states have call successors, (48) [2022-07-22 23:49:15,592 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 [] [2022-07-22 23:49:17,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:19,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:22,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:24,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:26,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:28,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:30,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:32,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:34,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:36,235 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:38,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:39,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:49:43,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:49:43,041 INFO L93 Difference]: Finished difference Result 52603 states and 70747 transitions. [2022-07-22 23:49:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:49:43,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.714285714285715) internal successors, (201), 7 states have internal predecessors, (201), 5 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (48), 5 states have call predecessors, (48), 5 states have call successors, (48) Word has length 323 [2022-07-22 23:49:43,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:49:43,111 INFO L225 Difference]: With dead ends: 52603 [2022-07-22 23:49:43,111 INFO L226 Difference]: Without dead ends: 26589 [2022-07-22 23:49:43,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 634 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:49:43,165 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 4 mSDsluCounter, 5535 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6699 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:49:43,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6699 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 8 Unknown, 102 Unchecked, 30.6s Time] [2022-07-22 23:49:43,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26589 states. [2022-07-22 23:49:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26589 to 26589. [2022-07-22 23:49:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26589 states, 18827 states have (on average 1.2877250756891698) internal successors, (24244), 19015 states have internal predecessors, (24244), 5576 states have call successors, (5576), 2150 states have call predecessors, (5576), 2185 states have return successors, (5755), 5597 states have call predecessors, (5755), 5575 states have call successors, (5755) [2022-07-22 23:49:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26589 states to 26589 states and 35575 transitions. [2022-07-22 23:49:43,985 INFO L78 Accepts]: Start accepts. Automaton has 26589 states and 35575 transitions. Word has length 323 [2022-07-22 23:49:43,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:49:43,986 INFO L495 AbstractCegarLoop]: Abstraction has 26589 states and 35575 transitions. [2022-07-22 23:49:43,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.714285714285715) internal successors, (201), 7 states have internal predecessors, (201), 5 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (48), 5 states have call predecessors, (48), 5 states have call successors, (48) [2022-07-22 23:49:43,986 INFO L276 IsEmpty]: Start isEmpty. Operand 26589 states and 35575 transitions. [2022-07-22 23:49:44,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-07-22 23:49:44,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:49:44,006 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:49:44,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-22 23:49:44,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:49:44,228 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:49:44,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:49:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash -887261089, now seen corresponding path program 1 times [2022-07-22 23:49:44,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:49:44,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488293010] [2022-07-22 23:49:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:49:44,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:49:44,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:49:44,230 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) [2022-07-22 23:49:44,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-22 23:49:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:45,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1954 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:49:45,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:49:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 145 proven. 4 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-22 23:49:45,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:49:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2022-07-22 23:49:46,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:49:46,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488293010] [2022-07-22 23:49:46,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488293010] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:49:46,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:49:46,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-22 23:49:46,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484864619] [2022-07-22 23:49:46,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:49:46,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:49:46,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:49:46,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:49:46,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:49:46,058 INFO L87 Difference]: Start difference. First operand 26589 states and 35575 transitions. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 6 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 6 states have call predecessors, (46), 6 states have call successors, (46) [2022-07-22 23:49:46,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:49:46,903 INFO L93 Difference]: Finished difference Result 53821 states and 72175 transitions. [2022-07-22 23:49:46,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:49:46,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 6 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 6 states have call predecessors, (46), 6 states have call successors, (46) Word has length 324 [2022-07-22 23:49:46,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:49:46,973 INFO L225 Difference]: With dead ends: 53821 [2022-07-22 23:49:46,973 INFO L226 Difference]: Without dead ends: 27261 [2022-07-22 23:49:47,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:49:47,023 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 19 mSDsluCounter, 5723 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6879 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:49:47,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6879 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 23:49:47,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27261 states. [2022-07-22 23:49:47,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27261 to 27261. [2022-07-22 23:49:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27261 states, 19331 states have (on average 1.2802234752470125) internal successors, (24748), 19519 states have internal predecessors, (24748), 5744 states have call successors, (5744), 2150 states have call predecessors, (5744), 2185 states have return successors, (5923), 5765 states have call predecessors, (5923), 5743 states have call successors, (5923) [2022-07-22 23:49:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27261 states to 27261 states and 36415 transitions. [2022-07-22 23:49:47,945 INFO L78 Accepts]: Start accepts. Automaton has 27261 states and 36415 transitions. Word has length 324 [2022-07-22 23:49:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:49:47,945 INFO L495 AbstractCegarLoop]: Abstraction has 27261 states and 36415 transitions. [2022-07-22 23:49:47,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 6 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 6 states have call predecessors, (46), 6 states have call successors, (46) [2022-07-22 23:49:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 27261 states and 36415 transitions. [2022-07-22 23:49:47,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-07-22 23:49:47,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:49:47,968 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2022-07-22 23:49:48,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-22 23:49:48,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:49:48,182 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:49:48,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:49:48,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1854702113, now seen corresponding path program 2 times [2022-07-22 23:49:48,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:49:48,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313471383] [2022-07-22 23:49:48,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:49:48,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:49:48,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:49:48,185 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) [2022-07-22 23:49:48,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-22 23:49:55,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:49:55,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:49:55,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 23:49:55,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:49:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 197 proven. 60 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2022-07-22 23:49:55,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:49:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 17 proven. 60 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2022-07-22 23:49:56,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:49:56,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313471383] [2022-07-22 23:49:56,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313471383] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:49:56,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:49:56,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-07-22 23:49:56,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203075232] [2022-07-22 23:49:56,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:49:56,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 23:49:56,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:49:56,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 23:49:56,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:49:56,395 INFO L87 Difference]: Start difference. First operand 27261 states and 36415 transitions. Second operand has 16 states, 16 states have (on average 13.4375) internal successors, (215), 16 states have internal predecessors, (215), 14 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) [2022-07-22 23:49:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:49:57,887 INFO L93 Difference]: Finished difference Result 55837 states and 74863 transitions. [2022-07-22 23:49:57,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 23:49:57,889 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.4375) internal successors, (215), 16 states have internal predecessors, (215), 14 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) Word has length 392 [2022-07-22 23:49:57,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:49:57,957 INFO L225 Difference]: With dead ends: 55837 [2022-07-22 23:49:57,957 INFO L226 Difference]: Without dead ends: 28605 [2022-07-22 23:49:57,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=316, Unknown=0, NotChecked=0, Total=506 [2022-07-22 23:49:57,998 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 54 mSDsluCounter, 8079 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 9251 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:49:57,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 9251 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 23:49:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28605 states. [2022-07-22 23:49:58,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28605 to 28605. [2022-07-22 23:49:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28605 states, 20339 states have (on average 1.2663356113869906) internal successors, (25756), 20527 states have internal predecessors, (25756), 6080 states have call successors, (6080), 2150 states have call predecessors, (6080), 2185 states have return successors, (6259), 6101 states have call predecessors, (6259), 6079 states have call successors, (6259) [2022-07-22 23:49:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28605 states to 28605 states and 38095 transitions. [2022-07-22 23:49:58,958 INFO L78 Accepts]: Start accepts. Automaton has 28605 states and 38095 transitions. Word has length 392 [2022-07-22 23:49:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:49:58,959 INFO L495 AbstractCegarLoop]: Abstraction has 28605 states and 38095 transitions. [2022-07-22 23:49:58,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.4375) internal successors, (215), 16 states have internal predecessors, (215), 14 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) [2022-07-22 23:49:58,959 INFO L276 IsEmpty]: Start isEmpty. Operand 28605 states and 38095 transitions. [2022-07-22 23:49:58,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2022-07-22 23:49:58,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:49:58,981 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 13, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2022-07-22 23:49:59,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-22 23:49:59,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:49:59,181 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:49:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:49:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash -398505761, now seen corresponding path program 3 times [2022-07-22 23:49:59,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:49:59,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843651571] [2022-07-22 23:49:59,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 23:49:59,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:49:59,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:49:59,185 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) [2022-07-22 23:49:59,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-22 23:50:05,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 23:50:05,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:50:05,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:50:05,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:50:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2183 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 2094 trivial. 0 not checked. [2022-07-22 23:50:05,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:50:05,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:50:05,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843651571] [2022-07-22 23:50:05,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843651571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:50:05,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:50:05,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:50:05,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940449080] [2022-07-22 23:50:05,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:50:05,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:50:05,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:50:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:50:05,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:50:05,549 INFO L87 Difference]: Start difference. First operand 28605 states and 38095 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-22 23:50:07,624 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 [] [2022-07-22 23:50:08,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:50:08,438 INFO L93 Difference]: Finished difference Result 59195 states and 79463 transitions. [2022-07-22 23:50:08,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:50:08,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) Word has length 528 [2022-07-22 23:50:08,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:50:08,536 INFO L225 Difference]: With dead ends: 59195 [2022-07-22 23:50:08,536 INFO L226 Difference]: Without dead ends: 30619 [2022-07-22 23:50:08,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:50:08,607 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 466 mSDsluCounter, 4226 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 5829 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:50:08,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 5829 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 23:50:08,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30619 states. [2022-07-22 23:50:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30619 to 28689. [2022-07-22 23:50:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28689 states, 20423 states have (on average 1.2667091024824952) internal successors, (25870), 20623 states have internal predecessors, (25870), 6068 states have call successors, (6068), 2150 states have call predecessors, (6068), 2197 states have return successors, (6259), 6089 states have call predecessors, (6259), 6067 states have call successors, (6259) [2022-07-22 23:50:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28689 states to 28689 states and 38197 transitions. [2022-07-22 23:50:09,687 INFO L78 Accepts]: Start accepts. Automaton has 28689 states and 38197 transitions. Word has length 528 [2022-07-22 23:50:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:50:09,687 INFO L495 AbstractCegarLoop]: Abstraction has 28689 states and 38197 transitions. [2022-07-22 23:50:09,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-22 23:50:09,687 INFO L276 IsEmpty]: Start isEmpty. Operand 28689 states and 38197 transitions. [2022-07-22 23:50:09,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2022-07-22 23:50:09,711 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:50:09,712 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 13, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2022-07-22 23:50:09,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-22 23:50:09,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:50:09,927 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:50:09,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:50:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash 626504496, now seen corresponding path program 1 times [2022-07-22 23:50:09,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:50:09,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615032211] [2022-07-22 23:50:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:50:09,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:50:09,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:50:09,931 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) [2022-07-22 23:50:09,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-22 23:50:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:50:13,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 23:50:13,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:50:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 301 proven. 364 refuted. 0 times theorem prover too weak. 1519 trivial. 0 not checked. [2022-07-22 23:50:14,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:50:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 17 proven. 364 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2022-07-22 23:50:16,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:50:16,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615032211] [2022-07-22 23:50:16,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615032211] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:50:16,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:50:16,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-07-22 23:50:16,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243091075] [2022-07-22 23:50:16,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:50:16,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-22 23:50:16,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:50:16,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-22 23:50:16,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2022-07-22 23:50:16,200 INFO L87 Difference]: Start difference. First operand 28689 states and 38197 transitions. Second operand has 32 states, 32 states have (on average 8.28125) internal successors, (265), 32 states have internal predecessors, (265), 30 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (70), 30 states have call predecessors, (70), 30 states have call successors, (70) [2022-07-22 23:50:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:50:20,248 INFO L93 Difference]: Finished difference Result 60037 states and 80443 transitions. [2022-07-22 23:50:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 23:50:20,249 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.28125) internal successors, (265), 32 states have internal predecessors, (265), 30 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (70), 30 states have call predecessors, (70), 30 states have call successors, (70) Word has length 529 [2022-07-22 23:50:20,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:50:20,358 INFO L225 Difference]: With dead ends: 60037 [2022-07-22 23:50:20,358 INFO L226 Difference]: Without dead ends: 31377 [2022-07-22 23:50:20,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=766, Invalid=1396, Unknown=0, NotChecked=0, Total=2162 [2022-07-22 23:50:20,443 INFO L413 NwaCegarLoop]: 1200 mSDtfsCounter, 118 mSDsluCounter, 17489 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 18689 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:50:20,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 18689 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 23:50:20,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31377 states. [2022-07-22 23:50:21,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31377 to 31377. [2022-07-22 23:50:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31377 states, 22439 states have (on average 1.2427470029858727) internal successors, (27886), 22639 states have internal predecessors, (27886), 6740 states have call successors, (6740), 2150 states have call predecessors, (6740), 2197 states have return successors, (6931), 6761 states have call predecessors, (6931), 6739 states have call successors, (6931) [2022-07-22 23:50:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31377 states to 31377 states and 41557 transitions. [2022-07-22 23:50:21,690 INFO L78 Accepts]: Start accepts. Automaton has 31377 states and 41557 transitions. Word has length 529 [2022-07-22 23:50:21,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:50:21,690 INFO L495 AbstractCegarLoop]: Abstraction has 31377 states and 41557 transitions. [2022-07-22 23:50:21,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.28125) internal successors, (265), 32 states have internal predecessors, (265), 30 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (70), 30 states have call predecessors, (70), 30 states have call successors, (70) [2022-07-22 23:50:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 31377 states and 41557 transitions. [2022-07-22 23:50:21,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2022-07-22 23:50:21,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:50:21,719 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 29, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2022-07-22 23:50:21,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-07-22 23:50:21,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:50:21,920 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:50:21,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:50:21,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1804852528, now seen corresponding path program 2 times [2022-07-22 23:50:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:50:21,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307919235] [2022-07-22 23:50:21,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:50:21,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:50:21,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:50:21,923 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) [2022-07-22 23:50:21,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-22 23:50:35,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:50:35,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:50:36,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 3958 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-22 23:50:36,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:50:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8336 backedges. 509 proven. 1740 refuted. 0 times theorem prover too weak. 6087 trivial. 0 not checked. [2022-07-22 23:50:38,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:50:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8336 backedges. 17 proven. 1740 refuted. 0 times theorem prover too weak. 6579 trivial. 0 not checked. [2022-07-22 23:50:44,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:50:44,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307919235] [2022-07-22 23:50:44,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307919235] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:50:44,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:50:44,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2022-07-22 23:50:44,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244900380] [2022-07-22 23:50:44,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:50:44,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-07-22 23:50:44,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:50:44,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-07-22 23:50:44,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2022-07-22 23:50:44,461 INFO L87 Difference]: Start difference. First operand 31377 states and 41557 transitions. Second operand has 64 states, 64 states have (on average 5.640625) internal successors, (361), 64 states have internal predecessors, (361), 62 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 62 states have call predecessors, (102), 62 states have call successors, (102) [2022-07-22 23:51:01,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:01,245 INFO L93 Difference]: Finished difference Result 68101 states and 91195 transitions. [2022-07-22 23:51:01,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-22 23:51:01,246 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.640625) internal successors, (361), 64 states have internal predecessors, (361), 62 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 62 states have call predecessors, (102), 62 states have call successors, (102) Word has length 801 [2022-07-22 23:51:01,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:01,373 INFO L225 Difference]: With dead ends: 68101 [2022-07-22 23:51:01,373 INFO L226 Difference]: Without dead ends: 36753 [2022-07-22 23:51:01,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1631 GetRequests, 1538 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=3070, Invalid=5860, Unknown=0, NotChecked=0, Total=8930 [2022-07-22 23:51:01,454 INFO L413 NwaCegarLoop]: 1264 mSDtfsCounter, 243 mSDsluCounter, 37168 mSDsCounter, 0 mSdLazyCounter, 3527 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 38432 SdHoareTripleChecker+Invalid, 3709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 3527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:01,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 38432 Invalid, 3709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 3527 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-07-22 23:51:01,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36753 states. [2022-07-22 23:51:02,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36753 to 36753. [2022-07-22 23:51:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36753 states, 26471 states have (on average 1.205772354652261) internal successors, (31918), 26671 states have internal predecessors, (31918), 8084 states have call successors, (8084), 2150 states have call predecessors, (8084), 2197 states have return successors, (8275), 8105 states have call predecessors, (8275), 8083 states have call successors, (8275) [2022-07-22 23:51:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36753 states to 36753 states and 48277 transitions. [2022-07-22 23:51:03,018 INFO L78 Accepts]: Start accepts. Automaton has 36753 states and 48277 transitions. Word has length 801 [2022-07-22 23:51:03,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:03,019 INFO L495 AbstractCegarLoop]: Abstraction has 36753 states and 48277 transitions. [2022-07-22 23:51:03,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.640625) internal successors, (361), 64 states have internal predecessors, (361), 62 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 62 states have call predecessors, (102), 62 states have call successors, (102) [2022-07-22 23:51:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 36753 states and 48277 transitions. [2022-07-22 23:51:03,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2022-07-22 23:51:03,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:03,061 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 63, 63, 63, 63, 62, 62, 62, 62, 61, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2022-07-22 23:51:03,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-22 23:51:03,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:51:03,262 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:03,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:03,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1200632112, now seen corresponding path program 3 times [2022-07-22 23:51:03,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:51:03,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69422129] [2022-07-22 23:51:03,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 23:51:03,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:51:03,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:51:03,266 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) [2022-07-22 23:51:03,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-22 23:51:09,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 23:51:09,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:51:10,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:51:10,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:51:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 33696 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 33607 trivial. 0 not checked. [2022-07-22 23:51:10,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:51:10,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:51:10,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69422129] [2022-07-22 23:51:10,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69422129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:10,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:10,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:51:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085853477] [2022-07-22 23:51:10,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:10,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:51:10,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:51:10,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:51:10,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:51:10,118 INFO L87 Difference]: Start difference. First operand 36753 states and 48277 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-22 23:51:12,194 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 [] [2022-07-22 23:51:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:13,752 INFO L93 Difference]: Finished difference Result 70951 states and 93685 transitions. [2022-07-22 23:51:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:51:13,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) Word has length 1345 [2022-07-22 23:51:13,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:13,850 INFO L225 Difference]: With dead ends: 70951 [2022-07-22 23:51:13,850 INFO L226 Difference]: Without dead ends: 38749 [2022-07-22 23:51:13,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1345 GetRequests, 1341 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:51:13,908 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 465 mSDsluCounter, 4227 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 5831 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:13,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 5831 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 23:51:13,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38749 states. [2022-07-22 23:51:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38749 to 36765. [2022-07-22 23:51:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36765 states, 26483 states have (on average 1.2061322357738926) internal successors, (31942), 26683 states have internal predecessors, (31942), 8084 states have call successors, (8084), 2150 states have call predecessors, (8084), 2197 states have return successors, (8275), 8105 states have call predecessors, (8275), 8083 states have call successors, (8275) [2022-07-22 23:51:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36765 states to 36765 states and 48301 transitions. [2022-07-22 23:51:15,442 INFO L78 Accepts]: Start accepts. Automaton has 36765 states and 48301 transitions. Word has length 1345 [2022-07-22 23:51:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:15,443 INFO L495 AbstractCegarLoop]: Abstraction has 36765 states and 48301 transitions. [2022-07-22 23:51:15,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-22 23:51:15,443 INFO L276 IsEmpty]: Start isEmpty. Operand 36765 states and 48301 transitions. [2022-07-22 23:51:15,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2022-07-22 23:51:15,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:15,485 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 63, 63, 63, 63, 62, 62, 62, 62, 61, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2022-07-22 23:51:15,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-22 23:51:15,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:51:15,686 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:15,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1851946687, now seen corresponding path program 1 times [2022-07-22 23:51:15,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:51:15,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218344417] [2022-07-22 23:51:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:15,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:51:15,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:51:15,690 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) [2022-07-22 23:51:15,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process