./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.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 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:53:54,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:53:54,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:53:54,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:53:54,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:53:54,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:53:54,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:53:54,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:53:54,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:53:54,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:53:54,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:53:54,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:53:54,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:53:54,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:53:54,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:53:54,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:53:54,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:53:54,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:53:54,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:53:54,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:53:54,566 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:53:54,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:53:54,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:53:54,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:53:54,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:53:54,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:53:54,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:53:54,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:53:54,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:53:54,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:53:54,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:53:54,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:53:54,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:53:54,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:53:54,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:53:54,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:53:54,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:53:54,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:53:54,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:53:54,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:53:54,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:53:54,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:53:54,588 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 12:53:54,620 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:53:54,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:53:54,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:53:54,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:53:54,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:53:54,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:53:54,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:53:54,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:53:54,623 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:53:54,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:53:54,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 12:53:54,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:53:54,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:53:54,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:53:54,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:53:54,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:53:54,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:53:54,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:53:54,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:53:54,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:53:54,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:53:54,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:53:54,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:53:54,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:53:54,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:53:54,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 12:53:54,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 12:53:54,626 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:53:54,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:53:54,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:53:54,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2022-07-21 12:53:54,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:53:54,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:53:54,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:53:54,929 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:53:54,931 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:53:54,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-07-21 12:53:54,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a5d99612/f13ad0f8c07247468179e7680b8d783b/FLAG013c32eee [2022-07-21 12:53:55,710 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:53:55,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-07-21 12:53:55,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a5d99612/f13ad0f8c07247468179e7680b8d783b/FLAG013c32eee [2022-07-21 12:53:56,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a5d99612/f13ad0f8c07247468179e7680b8d783b [2022-07-21 12:53:56,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:53:56,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:53:56,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:53:56,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:53:56,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:53:56,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:53:56" (1/1) ... [2022-07-21 12:53:56,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4caa2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:56, skipping insertion in model container [2022-07-21 12:53:56,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:53:56" (1/1) ... [2022-07-21 12:53:56,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:53:56,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:53:57,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2022-07-21 12:53:57,648 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-21 12:53:57,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:53:57,691 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:53:57,913 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: clkctl = (unsigned int )clkctl & 127U [8431] 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) [2022-07-21 12:53:57,919 INFO L158 Benchmark]: Toolchain (without parser) took 1912.21ms. Allocated memory was 62.9MB in the beginning and 132.1MB in the end (delta: 69.2MB). Free memory was 30.3MB in the beginning and 70.1MB in the end (delta: -39.8MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. [2022-07-21 12:53:57,920 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 44.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 12:53:57,921 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1910.63ms. Allocated memory was 62.9MB in the beginning and 132.1MB in the end (delta: 69.2MB). Free memory was 30.1MB in the beginning and 70.1MB in the end (delta: -39.9MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. [2022-07-21 12:53:57,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 44.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1910.63ms. Allocated memory was 62.9MB in the beginning and 132.1MB in the end (delta: 69.2MB). Free memory was 30.1MB in the beginning and 70.1MB in the end (delta: -39.9MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: clkctl = (unsigned int )clkctl & 127U [8431] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: clkctl = (unsigned int )clkctl & 127U [8431]: 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.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 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:53:59,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:53:59,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:53:59,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:53:59,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:53:59,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:53:59,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:53:59,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:53:59,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:53:59,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:53:59,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:53:59,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:53:59,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:53:59,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:53:59,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:53:59,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:53:59,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:53:59,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:53:59,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:53:59,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:53:59,502 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:53:59,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:53:59,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:53:59,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:53:59,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:53:59,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:53:59,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:53:59,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:53:59,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:53:59,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:53:59,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:53:59,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:53:59,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:53:59,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:53:59,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:53:59,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:53:59,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:53:59,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:53:59,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:53:59,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:53:59,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:53:59,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:53:59,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 12:53:59,541 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:53:59,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:53:59,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:53:59,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:53:59,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:53:59,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:53:59,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:53:59,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:53:59,544 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:53:59,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:53:59,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:53:59,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:53:59,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:53:59,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:53:59,545 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 12:53:59,545 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 12:53:59,545 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 12:53:59,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:53:59,545 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:53:59,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:53:59,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:53:59,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:53:59,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:53:59,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:53:59,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:53:59,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:53:59,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:53:59,546 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 12:53:59,547 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 12:53:59,547 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:53:59,547 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:53:59,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:53:59,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 12:53:59,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2022-07-21 12:53:59,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:53:59,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:53:59,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:53:59,831 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:53:59,832 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:53:59,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-07-21 12:53:59,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26c8e33c1/c88f0f273f79402a962ed9a5d11e0e3a/FLAGde2583c0b [2022-07-21 12:54:00,522 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:54:00,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-07-21 12:54:00,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26c8e33c1/c88f0f273f79402a962ed9a5d11e0e3a/FLAGde2583c0b [2022-07-21 12:54:00,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26c8e33c1/c88f0f273f79402a962ed9a5d11e0e3a [2022-07-21 12:54:00,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:54:00,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:54:00,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:54:00,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:54:00,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:54:00,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:54:00" (1/1) ... [2022-07-21 12:54:00,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f5a18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:00, skipping insertion in model container [2022-07-21 12:54:00,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:54:00" (1/1) ... [2022-07-21 12:54:00,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:54:00,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:54:02,243 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2022-07-21 12:54:02,268 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-21 12:54:02,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:54:02,312 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 12:54:02,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:54:02,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2022-07-21 12:54:02,612 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-21 12:54:02,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:54:02,630 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:54:02,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2022-07-21 12:54:02,848 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-21 12:54:02,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:54:02,923 INFO L208 MainTranslator]: Completed translation [2022-07-21 12:54:02,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:02 WrapperNode [2022-07-21 12:54:02,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 12:54:02,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 12:54:02,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 12:54:02,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 12:54:02,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:02" (1/1) ... [2022-07-21 12:54:03,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:02" (1/1) ... [2022-07-21 12:54:03,147 INFO L137 Inliner]: procedures = 289, calls = 1982, calls flagged for inlining = 131, calls inlined = 123, statements flattened = 4387 [2022-07-21 12:54:03,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 12:54:03,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 12:54:03,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 12:54:03,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 12:54:03,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:02" (1/1) ... [2022-07-21 12:54:03,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:02" (1/1) ... [2022-07-21 12:54:03,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:02" (1/1) ... [2022-07-21 12:54:03,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:02" (1/1) ... [2022-07-21 12:54:03,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:02" (1/1) ... [2022-07-21 12:54:03,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:02" (1/1) ... [2022-07-21 12:54:03,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:02" (1/1) ... [2022-07-21 12:54:03,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 12:54:03,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 12:54:03,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 12:54:03,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 12:54:03,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:02" (1/1) ... [2022-07-21 12:54:03,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:54:03,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:54:03,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 12:54:03,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 12:54:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-07-21 12:54:03,535 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-07-21 12:54:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 12:54:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 12:54:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_2 [2022-07-21 12:54:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_2 [2022-07-21 12:54:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 12:54:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 12:54:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 12:54:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 12:54:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-07-21 12:54:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-07-21 12:54:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 12:54:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 12:54:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 12:54:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 12:54:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-21 12:54:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-21 12:54:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-21 12:54:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-21 12:54:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_count [2022-07-21 12:54:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_count [2022-07-21 12:54:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 12:54:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 12:54:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2022-07-21 12:54:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2022-07-21 12:54:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_status [2022-07-21 12:54:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_status [2022-07-21 12:54:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-07-21 12:54:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-07-21 12:54:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_status [2022-07-21 12:54:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_status [2022-07-21 12:54:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2022-07-21 12:54:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2022-07-21 12:54:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 12:54:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 12:54:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 12:54:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 12:54:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ring_debug [2022-07-21 12:54:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ring_debug [2022-07-21 12:54:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-07-21 12:54:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-07-21 12:54:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-21 12:54:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-21 12:54:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 12:54:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 12:54:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 12:54:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 12:54:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-21 12:54:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-21 12:54:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-07-21 12:54:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-07-21 12:54:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2022-07-21 12:54:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2022-07-21 12:54:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure ring_get [2022-07-21 12:54:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_get [2022-07-21 12:54:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-21 12:54:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-21 12:54:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 12:54:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_resume [2022-07-21 12:54:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_resume [2022-07-21 12:54:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-21 12:54:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-21 12:54:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 12:54:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-07-21 12:54:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-07-21 12:54:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-21 12:54:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-07-21 12:54:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-07-21 12:54:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_us_delta [2022-07-21 12:54:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_us_delta [2022-07-21 12:54:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 12:54:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 12:54:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_free_ring [2022-07-21 12:54:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_free_ring [2022-07-21 12:54:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure ring_last [2022-07-21 12:54:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_last [2022-07-21 12:54:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-07-21 12:54:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-07-21 12:54:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 12:54:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 12:54:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 12:54:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 12:54:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 12:54:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure ring_put [2022-07-21 12:54:03,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_put [2022-07-21 12:54:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-07-21 12:54:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-07-21 12:54:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 12:54:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 12:54:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-21 12:54:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-21 12:54:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 12:54:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-07-21 12:54:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-07-21 12:54:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 12:54:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 12:54:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 12:54:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2022-07-21 12:54:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2022-07-21 12:54:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_tx_timeout [2022-07-21 12:54:03,552 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_tx_timeout [2022-07-21 12:54:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-07-21 12:54:03,552 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-07-21 12:54:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-21 12:54:03,552 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-21 12:54:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-21 12:54:03,553 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-21 12:54:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-21 12:54:03,555 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-21 12:54:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-21 12:54:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-21 12:54:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_addr_status [2022-07-21 12:54:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_addr_status [2022-07-21 12:54:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_destroy_hwif [2022-07-21 12:54:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_destroy_hwif [2022-07-21 12:54:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-21 12:54:03,558 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-21 12:54:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_stop_hw [2022-07-21 12:54:03,561 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_stop_hw [2022-07-21 12:54:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_addr [2022-07-21 12:54:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_addr [2022-07-21 12:54:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-21 12:54:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-21 12:54:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-21 12:54:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-21 12:54:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_remove [2022-07-21 12:54:03,563 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_remove [2022-07-21 12:54:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 12:54:03,563 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 12:54:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-07-21 12:54:03,563 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-07-21 12:54:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_clear_regs [2022-07-21 12:54:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_clear_regs [2022-07-21 12:54:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 12:54:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 12:54:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-21 12:54:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-21 12:54:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-07-21 12:54:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-07-21 12:54:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 12:54:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 12:54:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_start_hw [2022-07-21 12:54:03,565 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_start_hw [2022-07-21 12:54:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-07-21 12:54:03,565 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-07-21 12:54:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-21 12:54:03,565 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-21 12:54:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-07-21 12:54:03,565 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-07-21 12:54:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure rd_activate [2022-07-21 12:54:03,566 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_activate [2022-07-21 12:54:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 12:54:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-07-21 12:54:03,566 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-07-21 12:54:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 12:54:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 12:54:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 12:54:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 12:54:03,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 12:54:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure rd_is_active [2022-07-21 12:54:03,567 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_is_active [2022-07-21 12:54:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2022-07-21 12:54:03,567 INFO L138 BoogieDeclarations]: Found implementation of procedure irlap_close [2022-07-21 12:54:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-21 12:54:03,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-21 12:54:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 12:54:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_count [2022-07-21 12:54:03,567 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_count [2022-07-21 12:54:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-21 12:54:03,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-21 12:54:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-07-21 12:54:03,568 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-07-21 12:54:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 12:54:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-21 12:54:03,568 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-21 12:54:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-21 12:54:03,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-21 12:54:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 12:54:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 12:54:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 12:54:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_tx [2022-07-21 12:54:03,570 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_tx [2022-07-21 12:54:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 12:54:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-21 12:54:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-21 12:54:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 12:54:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ioctl [2022-07-21 12:54:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ioctl [2022-07-21 12:54:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_2 [2022-07-21 12:54:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_2 [2022-07-21 12:54:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_alloc_ring [2022-07-21 12:54:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_alloc_ring [2022-07-21 12:54:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_fill_rx [2022-07-21 12:54:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_fill_rx [2022-07-21 12:54:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-07-21 12:54:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-07-21 12:54:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_rx [2022-07-21 12:54:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_rx [2022-07-21 12:54:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-07-21 12:54:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-07-21 12:54:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_reg_debug [2022-07-21 12:54:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_reg_debug [2022-07-21 12:54:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 12:54:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_set_baud [2022-07-21 12:54:03,573 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_set_baud [2022-07-21 12:54:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-07-21 12:54:03,573 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-07-21 12:54:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure ring_first [2022-07-21 12:54:03,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_first [2022-07-21 12:54:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2022-07-21 12:54:03,573 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2022-07-21 12:54:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 12:54:03,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 12:54:04,156 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 12:54:04,164 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 12:54:06,159 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 12:54:27,981 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 12:54:28,001 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 12:54:28,001 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 12:54:28,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:54:28 BoogieIcfgContainer [2022-07-21 12:54:28,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 12:54:28,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 12:54:28,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 12:54:28,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 12:54:28,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:54:00" (1/3) ... [2022-07-21 12:54:28,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c733943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:54:28, skipping insertion in model container [2022-07-21 12:54:28,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:54:02" (2/3) ... [2022-07-21 12:54:28,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c733943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:54:28, skipping insertion in model container [2022-07-21 12:54:28,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:54:28" (3/3) ... [2022-07-21 12:54:28,011 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-07-21 12:54:28,023 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 12:54:28,024 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 12:54:28,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 12:54:28,097 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@22b519ee, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1334109f [2022-07-21 12:54:28,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 12:54:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 1625 states, 1124 states have (on average 1.3220640569395017) internal successors, (1486), 1150 states have internal predecessors, (1486), 409 states have call successors, (409), 91 states have call predecessors, (409), 90 states have return successors, (402), 401 states have call predecessors, (402), 402 states have call successors, (402) [2022-07-21 12:54:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-21 12:54:28,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:54:28,144 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:54:28,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:54:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:54:28,150 INFO L85 PathProgramCache]: Analyzing trace with hash -754527677, now seen corresponding path program 1 times [2022-07-21 12:54:28,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:54:28,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360150461] [2022-07-21 12:54:28,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:54:28,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:54:28,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:54:28,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:54:28,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 12:54:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:54:29,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 12:54:29,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:54:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-21 12:54:29,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:54:29,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:54:29,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360150461] [2022-07-21 12:54:29,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360150461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:54:29,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:54:29,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:54:29,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067953500] [2022-07-21 12:54:29,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:54:29,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 12:54:29,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:54:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 12:54:29,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 12:54:29,441 INFO L87 Difference]: Start difference. First operand has 1625 states, 1124 states have (on average 1.3220640569395017) internal successors, (1486), 1150 states have internal predecessors, (1486), 409 states have call successors, (409), 91 states have call predecessors, (409), 90 states have return successors, (402), 401 states have call predecessors, (402), 402 states have call successors, (402) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 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) [2022-07-21 12:54:29,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:54:29,552 INFO L93 Difference]: Finished difference Result 3245 states and 4630 transitions. [2022-07-21 12:54:29,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 12:54:29,554 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 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 175 [2022-07-21 12:54:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:54:29,581 INFO L225 Difference]: With dead ends: 3245 [2022-07-21 12:54:29,581 INFO L226 Difference]: Without dead ends: 1601 [2022-07-21 12:54:29,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 12:54:29,597 INFO L413 NwaCegarLoop]: 2293 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:54:29,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:54:29,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2022-07-21 12:54:29,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1601. [2022-07-21 12:54:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1110 states have (on average 1.3117117117117116) internal successors, (1456), 1126 states have internal predecessors, (1456), 401 states have call successors, (401), 90 states have call predecessors, (401), 89 states have return successors, (400), 399 states have call predecessors, (400), 400 states have call successors, (400) [2022-07-21 12:54:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2257 transitions. [2022-07-21 12:54:29,734 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2257 transitions. Word has length 175 [2022-07-21 12:54:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:54:29,735 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 2257 transitions. [2022-07-21 12:54:29,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 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) [2022-07-21 12:54:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2257 transitions. [2022-07-21 12:54:29,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-21 12:54:29,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:54:29,748 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:54:29,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 12:54:29,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:54:29,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:54:29,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:54:29,968 INFO L85 PathProgramCache]: Analyzing trace with hash -890110471, now seen corresponding path program 1 times [2022-07-21 12:54:29,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:54:29,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908461437] [2022-07-21 12:54:29,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:54:29,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:54:29,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:54:29,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:54:30,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 12:54:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:54:31,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 12:54:31,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:54:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-07-21 12:54:31,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:54:31,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:54:31,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908461437] [2022-07-21 12:54:31,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908461437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:54:31,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:54:31,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:54:31,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796793035] [2022-07-21 12:54:31,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:54:31,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:54:31,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:54:31,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:54:31,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:54:31,582 INFO L87 Difference]: Start difference. First operand 1601 states and 2257 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 12:54:32,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:54:32,008 INFO L93 Difference]: Finished difference Result 3194 states and 4509 transitions. [2022-07-21 12:54:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 12:54:32,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 175 [2022-07-21 12:54:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:54:32,016 INFO L225 Difference]: With dead ends: 3194 [2022-07-21 12:54:32,016 INFO L226 Difference]: Without dead ends: 1602 [2022-07-21 12:54:32,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:54:32,023 INFO L413 NwaCegarLoop]: 2249 mSDtfsCounter, 6 mSDsluCounter, 8975 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11224 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:54:32,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11224 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:54:32,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2022-07-21 12:54:32,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1602. [2022-07-21 12:54:32,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1111 states have (on average 1.3114311431143115) internal successors, (1457), 1127 states have internal predecessors, (1457), 401 states have call successors, (401), 90 states have call predecessors, (401), 89 states have return successors, (400), 399 states have call predecessors, (400), 400 states have call successors, (400) [2022-07-21 12:54:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2258 transitions. [2022-07-21 12:54:32,064 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2258 transitions. Word has length 175 [2022-07-21 12:54:32,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:54:32,065 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 2258 transitions. [2022-07-21 12:54:32,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 12:54:32,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2258 transitions. [2022-07-21 12:54:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-21 12:54:32,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:54:32,068 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:54:32,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-21 12:54:32,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:54:32,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:54:32,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:54:32,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1406706502, now seen corresponding path program 1 times [2022-07-21 12:54:32,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:54:32,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854011114] [2022-07-21 12:54:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:54:32,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:54:32,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:54:32,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:54:32,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 12:54:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:54:33,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 2185 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 12:54:33,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:54:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-21 12:54:33,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:54:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-21 12:54:34,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:54:34,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854011114] [2022-07-21 12:54:34,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854011114] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:54:34,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:54:34,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-21 12:54:34,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648630976] [2022-07-21 12:54:34,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:54:34,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 12:54:34,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:54:34,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 12:54:34,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-21 12:54:34,693 INFO L87 Difference]: Start difference. First operand 1602 states and 2258 transitions. Second operand has 11 states, 9 states have (on average 9.333333333333334) internal successors, (84), 11 states have internal predecessors, (84), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 12:54:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:54:35,375 INFO L93 Difference]: Finished difference Result 3201 states and 4517 transitions. [2022-07-21 12:54:35,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 12:54:35,376 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.333333333333334) internal successors, (84), 11 states have internal predecessors, (84), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 180 [2022-07-21 12:54:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:54:35,383 INFO L225 Difference]: With dead ends: 3201 [2022-07-21 12:54:35,384 INFO L226 Difference]: Without dead ends: 1608 [2022-07-21 12:54:35,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-21 12:54:35,390 INFO L413 NwaCegarLoop]: 2250 mSDtfsCounter, 10 mSDsluCounter, 8976 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 11226 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:54:35,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 11226 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:54:35,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-07-21 12:54:35,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1608. [2022-07-21 12:54:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1115 states have (on average 1.3103139013452916) internal successors, (1461), 1131 states have internal predecessors, (1461), 402 states have call successors, (402), 91 states have call predecessors, (402), 90 states have return successors, (401), 400 states have call predecessors, (401), 401 states have call successors, (401) [2022-07-21 12:54:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2264 transitions. [2022-07-21 12:54:35,433 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2264 transitions. Word has length 180 [2022-07-21 12:54:35,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:54:35,435 INFO L495 AbstractCegarLoop]: Abstraction has 1608 states and 2264 transitions. [2022-07-21 12:54:35,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.333333333333334) internal successors, (84), 11 states have internal predecessors, (84), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 12:54:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2264 transitions. [2022-07-21 12:54:35,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-21 12:54:35,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:54:35,438 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:54:35,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 12:54:35,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:54:35,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:54:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:54:35,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1346488039, now seen corresponding path program 2 times [2022-07-21 12:54:35,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:54:35,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102915257] [2022-07-21 12:54:35,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:54:35,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:54:35,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:54:35,661 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:54:35,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 12:54:36,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:54:36,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:54:36,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:54:36,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:54:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-07-21 12:54:36,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:54:36,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:54:36,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102915257] [2022-07-21 12:54:36,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102915257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:54:36,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:54:36,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:54:36,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510409949] [2022-07-21 12:54:36,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:54:36,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:54:36,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:54:36,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:54:36,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:54:36,809 INFO L87 Difference]: Start difference. First operand 1608 states and 2264 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:54:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:54:37,213 INFO L93 Difference]: Finished difference Result 4244 states and 5966 transitions. [2022-07-21 12:54:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:54:37,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 185 [2022-07-21 12:54:37,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:54:37,227 INFO L225 Difference]: With dead ends: 4244 [2022-07-21 12:54:37,227 INFO L226 Difference]: Without dead ends: 2669 [2022-07-21 12:54:37,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:54:37,235 INFO L413 NwaCegarLoop]: 2523 mSDtfsCounter, 1533 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:54:37,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 4676 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:54:37,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2022-07-21 12:54:37,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2663. [2022-07-21 12:54:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 1852 states have (on average 1.3142548596112311) internal successors, (2434), 1877 states have internal predecessors, (2434), 651 states have call successors, (651), 160 states have call predecessors, (651), 159 states have return successors, (654), 647 states have call predecessors, (654), 650 states have call successors, (654) [2022-07-21 12:54:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3739 transitions. [2022-07-21 12:54:37,310 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3739 transitions. Word has length 185 [2022-07-21 12:54:37,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:54:37,310 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3739 transitions. [2022-07-21 12:54:37,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:54:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3739 transitions. [2022-07-21 12:54:37,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-07-21 12:54:37,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:54:37,315 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-21 12:54:37,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-21 12:54:37,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:54:37,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:54:37,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:54:37,542 INFO L85 PathProgramCache]: Analyzing trace with hash 839830869, now seen corresponding path program 1 times [2022-07-21 12:54:37,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:54:37,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364455581] [2022-07-21 12:54:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:54:37,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:54:37,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:54:37,545 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:54:37,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 12:54:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:54:38,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 12:54:38,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:54:39,131 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 68 proven. 3 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-07-21 12:54:39,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:54:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-07-21 12:54:40,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:54:40,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364455581] [2022-07-21 12:54:40,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364455581] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:54:40,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:54:40,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-21 12:54:40,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977498531] [2022-07-21 12:54:40,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:54:40,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 12:54:40,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:54:40,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 12:54:40,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-21 12:54:40,272 INFO L87 Difference]: Start difference. First operand 2663 states and 3739 transitions. Second operand has 13 states, 11 states have (on average 12.363636363636363) internal successors, (136), 13 states have internal predecessors, (136), 4 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2022-07-21 12:54:41,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:54:41,282 INFO L93 Difference]: Finished difference Result 5324 states and 7479 transitions. [2022-07-21 12:54:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 12:54:41,283 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 12.363636363636363) internal successors, (136), 13 states have internal predecessors, (136), 4 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) Word has length 245 [2022-07-21 12:54:41,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:54:41,298 INFO L225 Difference]: With dead ends: 5324 [2022-07-21 12:54:41,299 INFO L226 Difference]: Without dead ends: 2665 [2022-07-21 12:54:41,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-21 12:54:41,310 INFO L413 NwaCegarLoop]: 2250 mSDtfsCounter, 13 mSDsluCounter, 17962 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20212 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 12:54:41,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 20212 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 12:54:41,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-07-21 12:54:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2665. [2022-07-21 12:54:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 1854 states have (on average 1.313915857605178) internal successors, (2436), 1879 states have internal predecessors, (2436), 651 states have call successors, (651), 160 states have call predecessors, (651), 159 states have return successors, (654), 647 states have call predecessors, (654), 650 states have call successors, (654) [2022-07-21 12:54:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 3741 transitions. [2022-07-21 12:54:41,379 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 3741 transitions. Word has length 245 [2022-07-21 12:54:41,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:54:41,380 INFO L495 AbstractCegarLoop]: Abstraction has 2665 states and 3741 transitions. [2022-07-21 12:54:41,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 12.363636363636363) internal successors, (136), 13 states have internal predecessors, (136), 4 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2022-07-21 12:54:41,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 3741 transitions. [2022-07-21 12:54:41,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-21 12:54:41,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:54:41,384 INFO L195 NwaCegarLoop]: trace histogram [15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-21 12:54:41,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 12:54:41,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:54:41,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:54:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:54:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1281569054, now seen corresponding path program 2 times [2022-07-21 12:54:41,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:54:41,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143330119] [2022-07-21 12:54:41,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:54:41,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:54:41,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:54:41,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:54:41,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 12:54:42,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:54:42,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:54:42,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:54:42,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:54:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-07-21 12:54:43,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:54:43,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:54:43,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143330119] [2022-07-21 12:54:43,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143330119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:54:43,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:54:43,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:54:43,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057857121] [2022-07-21 12:54:43,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:54:43,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:54:43,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:54:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:54:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:54:43,865 INFO L87 Difference]: Start difference. First operand 2665 states and 3741 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 12:54:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:54:44,188 INFO L93 Difference]: Finished difference Result 7933 states and 11154 transitions. [2022-07-21 12:54:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:54:44,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 250 [2022-07-21 12:54:44,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:54:44,211 INFO L225 Difference]: With dead ends: 7933 [2022-07-21 12:54:44,212 INFO L226 Difference]: Without dead ends: 5308 [2022-07-21 12:54:44,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:54:44,224 INFO L413 NwaCegarLoop]: 2681 mSDtfsCounter, 2201 mSDsluCounter, 7565 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 10246 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:54:44,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2205 Valid, 10246 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:54:44,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5308 states. [2022-07-21 12:54:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5308 to 5285. [2022-07-21 12:54:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5285 states, 3678 states have (on average 1.3148450244698207) internal successors, (4836), 3736 states have internal predecessors, (4836), 1289 states have call successors, (1289), 318 states have call predecessors, (1289), 317 states have return successors, (1298), 1274 states have call predecessors, (1298), 1288 states have call successors, (1298) [2022-07-21 12:54:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 7423 transitions. [2022-07-21 12:54:44,373 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 7423 transitions. Word has length 250 [2022-07-21 12:54:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:54:44,373 INFO L495 AbstractCegarLoop]: Abstraction has 5285 states and 7423 transitions. [2022-07-21 12:54:44,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 12:54:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 7423 transitions. [2022-07-21 12:54:44,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-21 12:54:44,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:54:44,381 INFO L195 NwaCegarLoop]: trace histogram [15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-21 12:54:44,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 12:54:44,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:54:44,598 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:54:44,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:54:44,598 INFO L85 PathProgramCache]: Analyzing trace with hash 964644521, now seen corresponding path program 1 times [2022-07-21 12:54:44,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:54:44,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406213764] [2022-07-21 12:54:44,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:54:44,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:54:44,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:54:44,601 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:54:44,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 12:54:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:54:46,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 2304 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 12:54:46,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:54:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 96 proven. 6 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-07-21 12:54:46,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:54:47,797 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-21 12:54:47,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:54:47,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406213764] [2022-07-21 12:54:47,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406213764] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:54:47,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:54:47,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-21 12:54:47,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329627346] [2022-07-21 12:54:47,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:54:47,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 12:54:47,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:54:47,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 12:54:47,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-21 12:54:47,799 INFO L87 Difference]: Start difference. First operand 5285 states and 7423 transitions. Second operand has 15 states, 13 states have (on average 10.846153846153847) internal successors, (141), 15 states have internal predecessors, (141), 4 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2022-07-21 12:54:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:54:48,879 INFO L93 Difference]: Finished difference Result 10571 states and 14854 transitions. [2022-07-21 12:54:48,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 12:54:48,880 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 10.846153846153847) internal successors, (141), 15 states have internal predecessors, (141), 4 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) Word has length 253 [2022-07-21 12:54:48,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:54:48,906 INFO L225 Difference]: With dead ends: 10571 [2022-07-21 12:54:48,906 INFO L226 Difference]: Without dead ends: 5288 [2022-07-21 12:54:48,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-07-21 12:54:48,923 INFO L413 NwaCegarLoop]: 2250 mSDtfsCounter, 12 mSDsluCounter, 15710 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 17960 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 12:54:48,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 17960 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 12:54:48,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5288 states. [2022-07-21 12:54:49,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5288 to 5288. [2022-07-21 12:54:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 3681 states have (on average 1.3145884270578647) internal successors, (4839), 3739 states have internal predecessors, (4839), 1289 states have call successors, (1289), 318 states have call predecessors, (1289), 317 states have return successors, (1298), 1274 states have call predecessors, (1298), 1288 states have call successors, (1298) [2022-07-21 12:54:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 7426 transitions. [2022-07-21 12:54:49,067 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 7426 transitions. Word has length 253 [2022-07-21 12:54:49,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:54:49,068 INFO L495 AbstractCegarLoop]: Abstraction has 5288 states and 7426 transitions. [2022-07-21 12:54:49,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 10.846153846153847) internal successors, (141), 15 states have internal predecessors, (141), 4 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2022-07-21 12:54:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 7426 transitions. [2022-07-21 12:54:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-21 12:54:49,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:54:49,075 INFO L195 NwaCegarLoop]: trace histogram [20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-21 12:54:49,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 12:54:49,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:54:49,304 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:54:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:54:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1279434698, now seen corresponding path program 2 times [2022-07-21 12:54:49,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:54:49,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052506405] [2022-07-21 12:54:49,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:54:49,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:54:49,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:54:49,307 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:54:49,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 12:54:50,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:54:50,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:54:50,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:54:50,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:54:51,436 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2022-07-21 12:54:51,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:54:51,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:54:51,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052506405] [2022-07-21 12:54:51,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052506405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:54:51,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:54:51,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:54:51,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544137490] [2022-07-21 12:54:51,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:54:51,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:54:51,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:54:51,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:54:51,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:54:51,438 INFO L87 Difference]: Start difference. First operand 5288 states and 7426 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 12:54:51,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:54:51,861 INFO L93 Difference]: Finished difference Result 15826 states and 22248 transitions. [2022-07-21 12:54:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:54:51,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 258 [2022-07-21 12:54:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:54:51,923 INFO L225 Difference]: With dead ends: 15826 [2022-07-21 12:54:51,923 INFO L226 Difference]: Without dead ends: 10579 [2022-07-21 12:54:51,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:54:51,943 INFO L413 NwaCegarLoop]: 2794 mSDtfsCounter, 2202 mSDsluCounter, 7789 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2206 SdHoareTripleChecker+Valid, 10583 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:54:51,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2206 Valid, 10583 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:54:51,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10579 states. [2022-07-21 12:54:52,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10579 to 10540. [2022-07-21 12:54:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10540 states, 7343 states have (on average 1.3148576875936266) internal successors, (9655), 7457 states have internal predecessors, (9655), 2563 states have call successors, (2563), 634 states have call predecessors, (2563), 633 states have return successors, (2586), 2536 states have call predecessors, (2586), 2562 states have call successors, (2586) [2022-07-21 12:54:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10540 states to 10540 states and 14804 transitions. [2022-07-21 12:54:52,210 INFO L78 Accepts]: Start accepts. Automaton has 10540 states and 14804 transitions. Word has length 258 [2022-07-21 12:54:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:54:52,213 INFO L495 AbstractCegarLoop]: Abstraction has 10540 states and 14804 transitions. [2022-07-21 12:54:52,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 12:54:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 10540 states and 14804 transitions. [2022-07-21 12:54:52,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-07-21 12:54:52,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:54:52,220 INFO L195 NwaCegarLoop]: trace histogram [20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-21 12:54:52,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 12:54:52,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:54:52,443 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:54:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:54:52,444 INFO L85 PathProgramCache]: Analyzing trace with hash -643065480, now seen corresponding path program 1 times [2022-07-21 12:54:52,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:54:52,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987994382] [2022-07-21 12:54:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:54:52,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:54:52,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:54:52,447 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:54:52,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 12:54:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:54:53,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 2357 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 12:54:53,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:54:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 132 proven. 10 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-21 12:54:54,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:54:56,051 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2022-07-21 12:54:56,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:54:56,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987994382] [2022-07-21 12:54:56,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987994382] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:54:56,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:54:56,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-21 12:54:56,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240390681] [2022-07-21 12:54:56,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:54:56,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 12:54:56,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:54:56,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 12:54:56,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-21 12:54:56,053 INFO L87 Difference]: Start difference. First operand 10540 states and 14804 transitions. Second operand has 17 states, 15 states have (on average 9.466666666666667) internal successors, (142), 17 states have internal predecessors, (142), 4 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2022-07-21 12:54:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:54:57,509 INFO L93 Difference]: Finished difference Result 21090 states and 29635 transitions. [2022-07-21 12:54:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 12:54:57,510 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 9.466666666666667) internal successors, (142), 17 states have internal predecessors, (142), 4 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) Word has length 257 [2022-07-21 12:54:57,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:54:57,547 INFO L225 Difference]: With dead ends: 21090 [2022-07-21 12:54:57,547 INFO L226 Difference]: Without dead ends: 10553 [2022-07-21 12:54:57,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-07-21 12:54:57,577 INFO L413 NwaCegarLoop]: 2251 mSDtfsCounter, 13 mSDsluCounter, 17961 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20212 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 12:54:57,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 20212 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 12:54:57,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10553 states. [2022-07-21 12:54:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10553 to 10553. [2022-07-21 12:54:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10553 states, 7355 states have (on average 1.3144799456152276) internal successors, (9668), 7469 states have internal predecessors, (9668), 2563 states have call successors, (2563), 635 states have call predecessors, (2563), 634 states have return successors, (2586), 2536 states have call predecessors, (2586), 2562 states have call successors, (2586) [2022-07-21 12:54:57,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10553 states to 10553 states and 14817 transitions. [2022-07-21 12:54:57,870 INFO L78 Accepts]: Start accepts. Automaton has 10553 states and 14817 transitions. Word has length 257 [2022-07-21 12:54:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:54:57,871 INFO L495 AbstractCegarLoop]: Abstraction has 10553 states and 14817 transitions. [2022-07-21 12:54:57,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 9.466666666666667) internal successors, (142), 17 states have internal predecessors, (142), 4 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2022-07-21 12:54:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 10553 states and 14817 transitions. [2022-07-21 12:54:57,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-21 12:54:57,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:54:57,876 INFO L195 NwaCegarLoop]: trace histogram [22, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-21 12:54:57,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 12:54:58,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:54:58,091 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:54:58,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:54:58,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1523738059, now seen corresponding path program 1 times [2022-07-21 12:54:58,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:54:58,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452186693] [2022-07-21 12:54:58,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:54:58,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:54:58,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:54:58,095 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:54:58,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 12:54:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:54:59,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 2377 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 12:54:59,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:54:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 158 proven. 15 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2022-07-21 12:54:59,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:55:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2022-07-21 12:55:01,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:55:01,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452186693] [2022-07-21 12:55:01,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452186693] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:55:01,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:55:01,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-21 12:55:01,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571792493] [2022-07-21 12:55:01,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:55:01,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 12:55:01,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:55:01,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 12:55:01,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-07-21 12:55:01,883 INFO L87 Difference]: Start difference. First operand 10553 states and 14817 transitions. Second operand has 19 states, 17 states have (on average 8.411764705882353) internal successors, (143), 19 states have internal predecessors, (143), 4 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2022-07-21 12:55:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:55:03,748 INFO L93 Difference]: Finished difference Result 21110 states and 29650 transitions. [2022-07-21 12:55:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 12:55:03,749 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 8.411764705882353) internal successors, (143), 19 states have internal predecessors, (143), 4 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) Word has length 258 [2022-07-21 12:55:03,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:55:03,782 INFO L225 Difference]: With dead ends: 21110 [2022-07-21 12:55:03,783 INFO L226 Difference]: Without dead ends: 10558 [2022-07-21 12:55:03,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-07-21 12:55:03,816 INFO L413 NwaCegarLoop]: 2252 mSDtfsCounter, 20 mSDsluCounter, 24705 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 26957 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:55:03,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 26957 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 12:55:03,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10558 states. [2022-07-21 12:55:04,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10558 to 10558. [2022-07-21 12:55:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10558 states, 7360 states have (on average 1.314266304347826) internal successors, (9673), 7474 states have internal predecessors, (9673), 2563 states have call successors, (2563), 635 states have call predecessors, (2563), 634 states have return successors, (2586), 2536 states have call predecessors, (2586), 2562 states have call successors, (2586) [2022-07-21 12:55:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10558 states to 10558 states and 14822 transitions. [2022-07-21 12:55:04,059 INFO L78 Accepts]: Start accepts. Automaton has 10558 states and 14822 transitions. Word has length 258 [2022-07-21 12:55:04,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:55:04,059 INFO L495 AbstractCegarLoop]: Abstraction has 10558 states and 14822 transitions. [2022-07-21 12:55:04,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 8.411764705882353) internal successors, (143), 19 states have internal predecessors, (143), 4 states have call successors, (52), 2 states have call predecessors, (52), 5 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2022-07-21 12:55:04,060 INFO L276 IsEmpty]: Start isEmpty. Operand 10558 states and 14822 transitions. [2022-07-21 12:55:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-21 12:55:04,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:55:04,065 INFO L195 NwaCegarLoop]: trace histogram [24, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-21 12:55:04,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 12:55:04,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:55:04,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:55:04,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:55:04,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1981287955, now seen corresponding path program 2 times [2022-07-21 12:55:04,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:55:04,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596770080] [2022-07-21 12:55:04,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:55:04,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:55:04,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:55:04,356 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:55:04,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 12:55:05,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:55:05,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:55:05,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:55:05,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:55:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2022-07-21 12:55:06,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:55:06,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:55:06,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596770080] [2022-07-21 12:55:06,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596770080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:55:06,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:55:06,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:55:06,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664325847] [2022-07-21 12:55:06,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:55:06,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:55:06,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:55:06,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:55:06,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:55:06,635 INFO L87 Difference]: Start difference. First operand 10558 states and 14822 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 12:55:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:55:07,179 INFO L93 Difference]: Finished difference Result 31656 states and 44473 transitions. [2022-07-21 12:55:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:55:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 260 [2022-07-21 12:55:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:55:07,251 INFO L225 Difference]: With dead ends: 31656 [2022-07-21 12:55:07,251 INFO L226 Difference]: Without dead ends: 21149 [2022-07-21 12:55:07,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:55:07,286 INFO L413 NwaCegarLoop]: 2816 mSDtfsCounter, 2200 mSDsluCounter, 7833 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 10649 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:55:07,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2204 Valid, 10649 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:55:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21149 states. [2022-07-21 12:55:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21149 to 21074. [2022-07-21 12:55:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21074 states, 14696 states have (on average 1.3140310288513881) internal successors, (19311), 14920 states have internal predecessors, (19311), 5109 states have call successors, (5109), 1269 states have call predecessors, (5109), 1268 states have return successors, (5164), 5060 states have call predecessors, (5164), 5108 states have call successors, (5164) [2022-07-21 12:55:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21074 states to 21074 states and 29584 transitions. [2022-07-21 12:55:07,757 INFO L78 Accepts]: Start accepts. Automaton has 21074 states and 29584 transitions. Word has length 260 [2022-07-21 12:55:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:55:07,757 INFO L495 AbstractCegarLoop]: Abstraction has 21074 states and 29584 transitions. [2022-07-21 12:55:07,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 12:55:07,757 INFO L276 IsEmpty]: Start isEmpty. Operand 21074 states and 29584 transitions. [2022-07-21 12:55:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-21 12:55:07,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:55:07,763 INFO L195 NwaCegarLoop]: trace histogram [24, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-21 12:55:07,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 12:55:07,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:55:07,989 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:55:07,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:55:07,990 INFO L85 PathProgramCache]: Analyzing trace with hash 708415928, now seen corresponding path program 2 times [2022-07-21 12:55:07,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:55:07,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617379562] [2022-07-21 12:55:07,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:55:07,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:55:07,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:55:07,993 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:55:07,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 12:55:09,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:55:09,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:55:09,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:55:09,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:55:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2022-07-21 12:55:10,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:55:10,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:55:10,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617379562] [2022-07-21 12:55:10,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617379562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:55:10,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:55:10,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:55:10,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595461131] [2022-07-21 12:55:10,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:55:10,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:55:10,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:55:10,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:55:10,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:55:10,237 INFO L87 Difference]: Start difference. First operand 21074 states and 29584 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 12:55:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:55:11,055 INFO L93 Difference]: Finished difference Result 63045 states and 88499 transitions. [2022-07-21 12:55:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:55:11,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 261 [2022-07-21 12:55:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:55:11,204 INFO L225 Difference]: With dead ends: 63045 [2022-07-21 12:55:11,205 INFO L226 Difference]: Without dead ends: 42022 [2022-07-21 12:55:11,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:55:11,277 INFO L413 NwaCegarLoop]: 2646 mSDtfsCounter, 2201 mSDsluCounter, 7493 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 10139 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:55:11,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2205 Valid, 10139 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:55:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42022 states. [2022-07-21 12:55:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42022 to 41881. [2022-07-21 12:55:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41881 states, 29222 states have (on average 1.3130175894873726) internal successors, (38369), 29654 states have internal predecessors, (38369), 10124 states have call successors, (10124), 2535 states have call predecessors, (10124), 2534 states have return successors, (10251), 10037 states have call predecessors, (10251), 10123 states have call successors, (10251) [2022-07-21 12:55:12,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41881 states to 41881 states and 58744 transitions. [2022-07-21 12:55:12,777 INFO L78 Accepts]: Start accepts. Automaton has 41881 states and 58744 transitions. Word has length 261 [2022-07-21 12:55:12,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:55:12,778 INFO L495 AbstractCegarLoop]: Abstraction has 41881 states and 58744 transitions. [2022-07-21 12:55:12,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 12:55:12,778 INFO L276 IsEmpty]: Start isEmpty. Operand 41881 states and 58744 transitions. [2022-07-21 12:55:12,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-21 12:55:12,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:55:12,783 INFO L195 NwaCegarLoop]: trace histogram [24, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-21 12:55:12,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 12:55:13,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:55:13,008 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:55:13,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:55:13,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1604518581, now seen corresponding path program 1 times [2022-07-21 12:55:13,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:55:13,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922870839] [2022-07-21 12:55:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:55:13,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:55:13,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:55:13,013 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:55:13,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 12:55:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:55:14,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2435 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 12:55:14,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:55:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 186 proven. 21 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2022-07-21 12:55:15,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:55:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 2 proven. 199 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-07-21 12:55:17,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:55:17,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922870839] [2022-07-21 12:55:17,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922870839] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:55:17,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:55:17,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-21 12:55:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660198004] [2022-07-21 12:55:17,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:55:17,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 12:55:17,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:55:17,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 12:55:17,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-21 12:55:17,636 INFO L87 Difference]: Start difference. First operand 41881 states and 58744 transitions. Second operand has 21 states, 19 states have (on average 8.052631578947368) internal successors, (153), 21 states have internal predecessors, (153), 4 states have call successors, (53), 2 states have call predecessors, (53), 5 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) [2022-07-21 12:55:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:55:20,526 INFO L93 Difference]: Finished difference Result 83802 states and 117588 transitions. [2022-07-21 12:55:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 12:55:20,528 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 8.052631578947368) internal successors, (153), 21 states have internal predecessors, (153), 4 states have call successors, (53), 2 states have call predecessors, (53), 5 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) Word has length 272 [2022-07-21 12:55:20,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:55:20,775 INFO L225 Difference]: With dead ends: 83802 [2022-07-21 12:55:20,775 INFO L226 Difference]: Without dead ends: 41898 [2022-07-21 12:55:20,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2022-07-21 12:55:20,865 INFO L413 NwaCegarLoop]: 2252 mSDtfsCounter, 24 mSDsluCounter, 22462 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 24714 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:55:20,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 24714 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 12:55:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41898 states. [2022-07-21 12:55:21,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41898 to 41898. [2022-07-21 12:55:21,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41898 states, 29239 states have (on average 1.3128355962926228) internal successors, (38386), 29671 states have internal predecessors, (38386), 10124 states have call successors, (10124), 2535 states have call predecessors, (10124), 2534 states have return successors, (10251), 10037 states have call predecessors, (10251), 10123 states have call successors, (10251) [2022-07-21 12:55:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41898 states to 41898 states and 58761 transitions. [2022-07-21 12:55:22,136 INFO L78 Accepts]: Start accepts. Automaton has 41898 states and 58761 transitions. Word has length 272 [2022-07-21 12:55:22,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:55:22,137 INFO L495 AbstractCegarLoop]: Abstraction has 41898 states and 58761 transitions. [2022-07-21 12:55:22,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 8.052631578947368) internal successors, (153), 21 states have internal predecessors, (153), 4 states have call successors, (53), 2 states have call predecessors, (53), 5 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) [2022-07-21 12:55:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 41898 states and 58761 transitions. [2022-07-21 12:55:22,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-21 12:55:22,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:55:22,141 INFO L195 NwaCegarLoop]: trace histogram [26, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-21 12:55:22,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 12:55:22,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:55:22,356 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:55:22,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:55:22,356 INFO L85 PathProgramCache]: Analyzing trace with hash -230043603, now seen corresponding path program 2 times [2022-07-21 12:55:22,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:55:22,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362321522] [2022-07-21 12:55:22,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:55:22,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:55:22,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:55:22,359 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:55:22,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 12:55:23,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:55:23,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:55:23,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 12:55:23,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:55:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2022-07-21 12:55:23,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:55:23,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:55:23,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362321522] [2022-07-21 12:55:23,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362321522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:55:23,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:55:23,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:55:23,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18584967] [2022-07-21 12:55:23,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:55:23,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:55:23,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:55:23,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:55:23,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:55:23,677 INFO L87 Difference]: Start difference. First operand 41898 states and 58761 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-07-21 12:55:24,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:55:24,350 INFO L93 Difference]: Finished difference Result 42541 states and 59785 transitions. [2022-07-21 12:55:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 12:55:24,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 274 [2022-07-21 12:55:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:55:24,465 INFO L225 Difference]: With dead ends: 42541 [2022-07-21 12:55:24,466 INFO L226 Difference]: Without dead ends: 42538 [2022-07-21 12:55:24,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:55:24,481 INFO L413 NwaCegarLoop]: 2281 mSDtfsCounter, 25 mSDsluCounter, 6810 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 9091 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:55:24,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 9091 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:55:24,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42538 states. [2022-07-21 12:55:25,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42538 to 41962. [2022-07-21 12:55:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41962 states, 29287 states have (on average 1.3117765561511934) internal successors, (38418), 29719 states have internal predecessors, (38418), 10124 states have call successors, (10124), 2551 states have call predecessors, (10124), 2550 states have return successors, (10251), 10037 states have call predecessors, (10251), 10123 states have call successors, (10251) [2022-07-21 12:55:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41962 states to 41962 states and 58793 transitions. [2022-07-21 12:55:25,431 INFO L78 Accepts]: Start accepts. Automaton has 41962 states and 58793 transitions. Word has length 274 [2022-07-21 12:55:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:55:25,431 INFO L495 AbstractCegarLoop]: Abstraction has 41962 states and 58793 transitions. [2022-07-21 12:55:25,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-07-21 12:55:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 41962 states and 58793 transitions. [2022-07-21 12:55:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-21 12:55:25,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:55:25,439 INFO L195 NwaCegarLoop]: trace histogram [26, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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] [2022-07-21 12:55:25,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-07-21 12:55:25,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:55:25,655 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:55:25,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:55:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash 311960414, now seen corresponding path program 1 times [2022-07-21 12:55:25,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:55:25,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979323340] [2022-07-21 12:55:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:55:25,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:55:25,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:55:25,659 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) [2022-07-21 12:55:25,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 12:55:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:55:27,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2827 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 12:55:27,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:55:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 286 proven. 28 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-07-21 12:55:28,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:55:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-07-21 12:55:30,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:55:30,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979323340] [2022-07-21 12:55:30,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979323340] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:55:30,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:55:30,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-07-21 12:55:30,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821259897] [2022-07-21 12:55:30,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:55:30,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 12:55:30,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:55:30,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 12:55:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-07-21 12:55:30,756 INFO L87 Difference]: Start difference. First operand 41962 states and 58793 transitions. Second operand has 23 states, 21 states have (on average 8.142857142857142) internal successors, (171), 23 states have internal predecessors, (171), 4 states have call successors, (48), 2 states have call predecessors, (48), 5 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2022-07-21 12:55:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:55:33,860 INFO L93 Difference]: Finished difference Result 83964 states and 117686 transitions. [2022-07-21 12:55:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 12:55:33,861 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 8.142857142857142) internal successors, (171), 23 states have internal predecessors, (171), 4 states have call successors, (48), 2 states have call predecessors, (48), 5 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) Word has length 300 [2022-07-21 12:55:33,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:55:34,011 INFO L225 Difference]: With dead ends: 83964 [2022-07-21 12:55:34,012 INFO L226 Difference]: Without dead ends: 41979 [2022-07-21 12:55:34,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2022-07-21 12:55:34,104 INFO L413 NwaCegarLoop]: 2252 mSDtfsCounter, 32 mSDsluCounter, 22461 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 24713 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:55:34,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 24713 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 12:55:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41979 states. [2022-07-21 12:55:34,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41979 to 41979. [2022-07-21 12:55:34,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41979 states, 29304 states have (on average 1.3115956865956866) internal successors, (38435), 29736 states have internal predecessors, (38435), 10124 states have call successors, (10124), 2551 states have call predecessors, (10124), 2550 states have return successors, (10251), 10037 states have call predecessors, (10251), 10123 states have call successors, (10251) [2022-07-21 12:55:35,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41979 states to 41979 states and 58810 transitions. [2022-07-21 12:55:35,172 INFO L78 Accepts]: Start accepts. Automaton has 41979 states and 58810 transitions. Word has length 300 [2022-07-21 12:55:35,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:55:35,173 INFO L495 AbstractCegarLoop]: Abstraction has 41979 states and 58810 transitions. [2022-07-21 12:55:35,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 8.142857142857142) internal successors, (171), 23 states have internal predecessors, (171), 4 states have call successors, (48), 2 states have call predecessors, (48), 5 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2022-07-21 12:55:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 41979 states and 58810 transitions. [2022-07-21 12:55:35,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-07-21 12:55:35,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:55:35,181 INFO L195 NwaCegarLoop]: trace histogram [28, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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] [2022-07-21 12:55:35,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-07-21 12:55:35,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:55:35,385 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:55:35,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:55:35,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1283115942, now seen corresponding path program 2 times [2022-07-21 12:55:35,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:55:35,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151529422] [2022-07-21 12:55:35,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:55:35,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:55:35,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:55:35,388 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) [2022-07-21 12:55:35,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 12:55:36,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:55:36,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:55:36,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 12:55:36,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:55:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2022-07-21 12:55:36,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:55:36,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:55:36,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151529422] [2022-07-21 12:55:36,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151529422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:55:36,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:55:36,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 12:55:36,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17526385] [2022-07-21 12:55:36,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:55:36,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 12:55:36,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:55:36,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 12:55:36,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 12:55:36,950 INFO L87 Difference]: Start difference. First operand 41979 states and 58810 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-07-21 12:55:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:55:40,321 INFO L93 Difference]: Finished difference Result 138799 states and 204462 transitions. [2022-07-21 12:55:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 12:55:40,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 302 [2022-07-21 12:55:40,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:55:40,895 INFO L225 Difference]: With dead ends: 138799 [2022-07-21 12:55:40,895 INFO L226 Difference]: Without dead ends: 96873 [2022-07-21 12:55:41,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-21 12:55:41,011 INFO L413 NwaCegarLoop]: 4335 mSDtfsCounter, 4426 mSDsluCounter, 17225 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4537 SdHoareTripleChecker+Valid, 21560 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1595 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:55:41,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4537 Valid, 21560 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1595 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 12:55:41,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96873 states. [2022-07-21 12:55:42,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96873 to 42059. [2022-07-21 12:55:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42059 states, 29384 states have (on average 1.3112918595153826) internal successors, (38531), 29816 states have internal predecessors, (38531), 10124 states have call successors, (10124), 2551 states have call predecessors, (10124), 2550 states have return successors, (10251), 10037 states have call predecessors, (10251), 10123 states have call successors, (10251) [2022-07-21 12:55:42,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42059 states to 42059 states and 58906 transitions. [2022-07-21 12:55:42,823 INFO L78 Accepts]: Start accepts. Automaton has 42059 states and 58906 transitions. Word has length 302 [2022-07-21 12:55:42,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:55:42,824 INFO L495 AbstractCegarLoop]: Abstraction has 42059 states and 58906 transitions. [2022-07-21 12:55:42,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-07-21 12:55:42,824 INFO L276 IsEmpty]: Start isEmpty. Operand 42059 states and 58906 transitions. [2022-07-21 12:55:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-07-21 12:55:42,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:55:42,832 INFO L195 NwaCegarLoop]: trace histogram [28, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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] [2022-07-21 12:55:42,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-07-21 12:55:43,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:55:43,049 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:55:43,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:55:43,049 INFO L85 PathProgramCache]: Analyzing trace with hash 696309928, now seen corresponding path program 1 times [2022-07-21 12:55:43,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:55:43,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909051294] [2022-07-21 12:55:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:55:43,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:55:43,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:55:43,052 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) [2022-07-21 12:55:43,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-21 12:55:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:55:46,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 2849 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:55:46,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:55:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-07-21 12:55:46,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:55:46,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:55:46,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909051294] [2022-07-21 12:55:46,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909051294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:55:46,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:55:46,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:55:46,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447044363] [2022-07-21 12:55:46,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:55:46,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:55:46,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:55:46,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:55:46,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:55:46,267 INFO L87 Difference]: Start difference. First operand 42059 states and 58906 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 12:55:48,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:55:48,121 INFO L93 Difference]: Finished difference Result 113951 states and 158938 transitions. [2022-07-21 12:55:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:55:48,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 302 [2022-07-21 12:55:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:55:48,423 INFO L225 Difference]: With dead ends: 113951 [2022-07-21 12:55:48,423 INFO L226 Difference]: Without dead ends: 71945 [2022-07-21 12:55:48,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:55:48,554 INFO L413 NwaCegarLoop]: 3341 mSDtfsCounter, 1833 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 5509 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:55:48,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 5509 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:55:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71945 states. [2022-07-21 12:55:50,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71945 to 71846. [2022-07-21 12:55:50,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71846 states, 50411 states have (on average 1.309793497450953) internal successors, (66028), 51225 states have internal predecessors, (66028), 16873 states have call successors, (16873), 4562 states have call predecessors, (16873), 4561 states have return successors, (17064), 16684 states have call predecessors, (17064), 16872 states have call successors, (17064) [2022-07-21 12:55:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71846 states to 71846 states and 99965 transitions. [2022-07-21 12:55:50,711 INFO L78 Accepts]: Start accepts. Automaton has 71846 states and 99965 transitions. Word has length 302 [2022-07-21 12:55:50,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:55:50,712 INFO L495 AbstractCegarLoop]: Abstraction has 71846 states and 99965 transitions. [2022-07-21 12:55:50,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 12:55:50,712 INFO L276 IsEmpty]: Start isEmpty. Operand 71846 states and 99965 transitions. [2022-07-21 12:55:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-07-21 12:55:50,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:55:50,722 INFO L195 NwaCegarLoop]: trace histogram [28, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:55:50,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-07-21 12:55:50,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:55:50,948 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:55:50,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:55:50,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1111120296, now seen corresponding path program 1 times [2022-07-21 12:55:50,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:55:50,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116013258] [2022-07-21 12:55:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:55:50,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:55:50,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:55:50,951 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) [2022-07-21 12:55:50,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-21 12:55:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:55:53,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:55:54,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:55:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-07-21 12:55:54,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:55:54,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:55:54,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116013258] [2022-07-21 12:55:54,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116013258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:55:54,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:55:54,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:55:54,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321872643] [2022-07-21 12:55:54,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:55:54,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:55:54,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:55:54,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:55:54,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:55:54,093 INFO L87 Difference]: Start difference. First operand 71846 states and 99965 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 12:55:56,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:55:56,098 INFO L93 Difference]: Finished difference Result 144919 states and 201787 transitions. [2022-07-21 12:55:56,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:55:56,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 343 [2022-07-21 12:55:56,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:55:56,436 INFO L225 Difference]: With dead ends: 144919 [2022-07-21 12:55:56,436 INFO L226 Difference]: Without dead ends: 73126 [2022-07-21 12:55:56,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:55:56,619 INFO L413 NwaCegarLoop]: 2259 mSDtfsCounter, 24 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 4507 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:55:56,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 4507 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:55:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73126 states. [2022-07-21 12:55:58,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73126 to 72870. [2022-07-21 12:55:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72870 states, 51371 states have (on average 1.3127250783515991) internal successors, (67436), 52185 states have internal predecessors, (67436), 16937 states have call successors, (16937), 4562 states have call predecessors, (16937), 4561 states have return successors, (17128), 16748 states have call predecessors, (17128), 16936 states have call successors, (17128) [2022-07-21 12:55:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72870 states to 72870 states and 101501 transitions. [2022-07-21 12:55:59,025 INFO L78 Accepts]: Start accepts. Automaton has 72870 states and 101501 transitions. Word has length 343 [2022-07-21 12:55:59,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:55:59,026 INFO L495 AbstractCegarLoop]: Abstraction has 72870 states and 101501 transitions. [2022-07-21 12:55:59,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 12:55:59,027 INFO L276 IsEmpty]: Start isEmpty. Operand 72870 states and 101501 transitions. [2022-07-21 12:55:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-07-21 12:55:59,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:55:59,038 INFO L195 NwaCegarLoop]: trace histogram [28, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:55:59,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-21 12:55:59,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:55:59,264 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:55:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:55:59,264 INFO L85 PathProgramCache]: Analyzing trace with hash -65640987, now seen corresponding path program 1 times [2022-07-21 12:55:59,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:55:59,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704674042] [2022-07-21 12:55:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:55:59,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:55:59,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:55:59,267 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) [2022-07-21 12:55:59,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-21 12:56:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:56:02,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 2987 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 12:56:02,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:56:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 148 proven. 1 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-07-21 12:56:02,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:56:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2022-07-21 12:56:02,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:56:02,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704674042] [2022-07-21 12:56:02,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704674042] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:56:02,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:56:02,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-21 12:56:02,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898852118] [2022-07-21 12:56:02,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:56:02,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:56:02,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:56:02,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:56:02,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:56:02,877 INFO L87 Difference]: Start difference. First operand 72870 states and 101501 transitions. Second operand has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-07-21 12:56:04,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:56:04,875 INFO L93 Difference]: Finished difference Result 147223 states and 205115 transitions. [2022-07-21 12:56:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 12:56:04,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 355 [2022-07-21 12:56:04,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:56:05,172 INFO L225 Difference]: With dead ends: 147223 [2022-07-21 12:56:05,172 INFO L226 Difference]: Without dead ends: 74406 [2022-07-21 12:56:05,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:56:05,348 INFO L413 NwaCegarLoop]: 2275 mSDtfsCounter, 73 mSDsluCounter, 8975 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 11250 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:56:05,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 11250 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:56:05,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74406 states. [2022-07-21 12:56:07,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74406 to 74150. [2022-07-21 12:56:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74150 states, 52587 states have (on average 1.31401296898473) internal successors, (69100), 53401 states have internal predecessors, (69100), 17001 states have call successors, (17001), 4562 states have call predecessors, (17001), 4561 states have return successors, (17192), 16812 states have call predecessors, (17192), 17000 states have call successors, (17192) [2022-07-21 12:56:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74150 states to 74150 states and 103293 transitions. [2022-07-21 12:56:07,882 INFO L78 Accepts]: Start accepts. Automaton has 74150 states and 103293 transitions. Word has length 355 [2022-07-21 12:56:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:56:07,883 INFO L495 AbstractCegarLoop]: Abstraction has 74150 states and 103293 transitions. [2022-07-21 12:56:07,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-07-21 12:56:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 74150 states and 103293 transitions. [2022-07-21 12:56:07,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-07-21 12:56:07,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:56:07,896 INFO L195 NwaCegarLoop]: trace histogram [28, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:56:07,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-21 12:56:08,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:56:08,112 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:56:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:56:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1651194354, now seen corresponding path program 2 times [2022-07-21 12:56:08,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:56:08,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818208396] [2022-07-21 12:56:08,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:56:08,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:56:08,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:56:08,115 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) [2022-07-21 12:56:08,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-21 12:56:09,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:56:09,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:56:09,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 12:56:09,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:56:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2022-07-21 12:56:09,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:56:09,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:56:09,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818208396] [2022-07-21 12:56:09,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818208396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:56:09,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:56:09,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:56:09,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505129658] [2022-07-21 12:56:09,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:56:09,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 12:56:09,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:56:09,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 12:56:09,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 12:56:09,689 INFO L87 Difference]: Start difference. First operand 74150 states and 103293 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-21 12:56:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:56:12,259 INFO L93 Difference]: Finished difference Result 148273 states and 206927 transitions. [2022-07-21 12:56:12,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 12:56:12,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 367 [2022-07-21 12:56:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:56:12,523 INFO L225 Difference]: With dead ends: 148273 [2022-07-21 12:56:12,524 INFO L226 Difference]: Without dead ends: 74176 [2022-07-21 12:56:12,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:56:12,696 INFO L413 NwaCegarLoop]: 2935 mSDtfsCounter, 1069 mSDsluCounter, 4558 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 7493 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:56:12,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 7493 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:56:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74176 states. [2022-07-21 12:56:14,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74176 to 71862. [2022-07-21 12:56:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71862 states, 50971 states have (on average 1.3158070275254556) internal successors, (67068), 51753 states have internal predecessors, (67068), 16409 states have call successors, (16409), 4482 states have call predecessors, (16409), 4481 states have return successors, (16576), 16236 states have call predecessors, (16576), 16408 states have call successors, (16576) [2022-07-21 12:56:15,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71862 states to 71862 states and 100053 transitions. [2022-07-21 12:56:15,065 INFO L78 Accepts]: Start accepts. Automaton has 71862 states and 100053 transitions. Word has length 367 [2022-07-21 12:56:15,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:56:15,067 INFO L495 AbstractCegarLoop]: Abstraction has 71862 states and 100053 transitions. [2022-07-21 12:56:15,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-21 12:56:15,067 INFO L276 IsEmpty]: Start isEmpty. Operand 71862 states and 100053 transitions. [2022-07-21 12:56:15,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-07-21 12:56:15,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:56:15,077 INFO L195 NwaCegarLoop]: trace histogram [28, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:56:15,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-07-21 12:56:15,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:56:15,292 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:56:15,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:56:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash 906091915, now seen corresponding path program 1 times [2022-07-21 12:56:15,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:56:15,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031023177] [2022-07-21 12:56:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:56:15,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:56:15,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:56:15,296 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) [2022-07-21 12:56:15,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-21 12:56:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:56:18,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 3013 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:56:18,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:56:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2022-07-21 12:56:18,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:56:18,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:56:18,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031023177] [2022-07-21 12:56:18,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031023177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:56:18,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:56:18,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:56:18,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528863342] [2022-07-21 12:56:18,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:56:18,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:56:18,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:56:18,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:56:18,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:56:18,419 INFO L87 Difference]: Start difference. First operand 71862 states and 100053 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 12:56:20,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:56:22,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:56:22,454 INFO L93 Difference]: Finished difference Result 143735 states and 200107 transitions. [2022-07-21 12:56:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:56:22,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 369 [2022-07-21 12:56:22,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:56:22,720 INFO L225 Difference]: With dead ends: 143735 [2022-07-21 12:56:22,720 INFO L226 Difference]: Without dead ends: 71862 [2022-07-21 12:56:22,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:56:22,889 INFO L413 NwaCegarLoop]: 2256 mSDtfsCounter, 0 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4507 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:56:22,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4507 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 12:56:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71862 states.