./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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-08_1a-drivers--rapidio--rapidio.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 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 00:27:56,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 00:27:56,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 00:27:56,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 00:27:56,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 00:27:56,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 00:27:56,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 00:27:56,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 00:27:56,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 00:27:56,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 00:27:56,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 00:27:56,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 00:27:56,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 00:27:56,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 00:27:56,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 00:27:56,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 00:27:56,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 00:27:56,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 00:27:56,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 00:27:56,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 00:27:56,431 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 00:27:56,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 00:27:56,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 00:27:56,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 00:27:56,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 00:27:56,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 00:27:56,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 00:27:56,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 00:27:56,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 00:27:56,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 00:27:56,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 00:27:56,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 00:27:56,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 00:27:56,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 00:27:56,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 00:27:56,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 00:27:56,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 00:27:56,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 00:27:56,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 00:27:56,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 00:27:56,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 00:27:56,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 00:27:56,455 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 00:27:56,487 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 00:27:56,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 00:27:56,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 00:27:56,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 00:27:56,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 00:27:56,489 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 00:27:56,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 00:27:56,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 00:27:56,490 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 00:27:56,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 00:27:56,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 00:27:56,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 00:27:56,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 00:27:56,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 00:27:56,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 00:27:56,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 00:27:56,492 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 00:27:56,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 00:27:56,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 00:27:56,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 00:27:56,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 00:27:56,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:27:56,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 00:27:56,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 00:27:56,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 00:27:56,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 00:27:56,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 00:27:56,499 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 00:27:56,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 00:27:56,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 00:27:56,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2022-07-20 00:27:56,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 00:27:56,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 00:27:56,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 00:27:56,764 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 00:27:56,765 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 00:27:56,766 INFO L432 ainManager$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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-07-20 00:27:56,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd7765802/7976146b85514748ab2db7d9e084ced2/FLAG8bf10c1ee [2022-07-20 00:27:57,524 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 00:27:57,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-07-20 00:27:57,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd7765802/7976146b85514748ab2db7d9e084ced2/FLAG8bf10c1ee [2022-07-20 00:27:57,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd7765802/7976146b85514748ab2db7d9e084ced2 [2022-07-20 00:27:57,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 00:27:57,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 00:27:57,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 00:27:57,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 00:27:57,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 00:27:57,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:27:57" (1/1) ... [2022-07-20 00:27:57,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438c92f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:27:57, skipping insertion in model container [2022-07-20 00:27:57,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:27:57" (1/1) ... [2022-07-20 00:27:57,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 00:27:57,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:27:59,589 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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2022-07-20 00:27:59,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:27:59,792 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 00:27:59,925 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: ftr_header = ftr_header & 65535U [3617] 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) [2022-07-20 00:27:59,936 INFO L158 Benchmark]: Toolchain (without parser) took 2270.92ms. Allocated memory was 102.8MB in the beginning and 190.8MB in the end (delta: 88.1MB). Free memory was 59.5MB in the beginning and 104.3MB in the end (delta: -44.9MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2022-07-20 00:27:59,938 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 102.8MB. Free memory was 59.5MB in the beginning and 59.4MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 00:27:59,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2267.24ms. Allocated memory was 102.8MB in the beginning and 190.8MB in the end (delta: 88.1MB). Free memory was 59.2MB in the beginning and 104.3MB in the end (delta: -45.1MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2022-07-20 00:27:59,941 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 102.8MB. Free memory was 59.5MB in the beginning and 59.4MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2267.24ms. Allocated memory was 102.8MB in the beginning and 190.8MB in the end (delta: 88.1MB). Free memory was 59.2MB in the beginning and 104.3MB in the end (delta: -45.1MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: ftr_header = ftr_header & 65535U [3617] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: ftr_header = ftr_header & 65535U [3617]: 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-08_1a-drivers--rapidio--rapidio.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 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 00:28:01,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 00:28:01,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 00:28:01,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 00:28:01,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 00:28:01,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 00:28:01,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 00:28:01,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 00:28:01,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 00:28:01,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 00:28:01,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 00:28:01,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 00:28:01,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 00:28:01,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 00:28:01,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 00:28:01,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 00:28:01,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 00:28:01,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 00:28:01,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 00:28:01,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 00:28:01,790 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 00:28:01,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 00:28:01,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 00:28:01,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 00:28:01,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 00:28:01,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 00:28:01,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 00:28:01,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 00:28:01,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 00:28:01,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 00:28:01,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 00:28:01,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 00:28:01,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 00:28:01,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 00:28:01,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 00:28:01,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 00:28:01,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 00:28:01,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 00:28:01,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 00:28:01,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 00:28:01,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 00:28:01,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 00:28:01,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-20 00:28:01,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 00:28:01,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 00:28:01,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 00:28:01,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 00:28:01,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 00:28:01,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 00:28:01,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 00:28:01,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 00:28:01,847 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 00:28:01,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 00:28:01,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 00:28:01,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 00:28:01,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 00:28:01,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 00:28:01,859 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 00:28:01,859 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 00:28:01,859 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 00:28:01,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 00:28:01,859 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 00:28:01,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 00:28:01,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 00:28:01,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 00:28:01,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 00:28:01,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:28:01,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 00:28:01,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 00:28:01,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 00:28:01,861 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 00:28:01,862 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 00:28:01,862 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 00:28:01,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 00:28:01,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 00:28:01,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 00:28:01,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2022-07-20 00:28:02,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 00:28:02,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 00:28:02,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 00:28:02,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 00:28:02,195 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 00:28:02,197 INFO L432 ainManager$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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-07-20 00:28:02,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a153af70/058aea68c0c84b3e931952f93937625b/FLAG2a05cc03c [2022-07-20 00:28:03,079 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 00:28:03,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-07-20 00:28:03,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a153af70/058aea68c0c84b3e931952f93937625b/FLAG2a05cc03c [2022-07-20 00:28:03,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a153af70/058aea68c0c84b3e931952f93937625b [2022-07-20 00:28:03,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 00:28:03,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 00:28:03,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 00:28:03,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 00:28:03,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 00:28:03,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:28:03" (1/1) ... [2022-07-20 00:28:03,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb7869c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:03, skipping insertion in model container [2022-07-20 00:28:03,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:28:03" (1/1) ... [2022-07-20 00:28:03,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 00:28:03,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:28:05,859 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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2022-07-20 00:28:05,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:28:06,072 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 00:28:06,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:28:06,429 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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2022-07-20 00:28:06,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:28:06,493 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 00:28:06,941 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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2022-07-20 00:28:06,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:28:07,096 INFO L208 MainTranslator]: Completed translation [2022-07-20 00:28:07,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:07 WrapperNode [2022-07-20 00:28:07,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 00:28:07,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 00:28:07,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 00:28:07,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 00:28:07,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:07" (1/1) ... [2022-07-20 00:28:07,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:07" (1/1) ... [2022-07-20 00:28:07,428 INFO L137 Inliner]: procedures = 312, calls = 3660, calls flagged for inlining = 139, calls inlined = 96, statements flattened = 4731 [2022-07-20 00:28:07,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 00:28:07,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 00:28:07,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 00:28:07,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 00:28:07,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:07" (1/1) ... [2022-07-20 00:28:07,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:07" (1/1) ... [2022-07-20 00:28:07,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:07" (1/1) ... [2022-07-20 00:28:07,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:07" (1/1) ... [2022-07-20 00:28:07,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:07" (1/1) ... [2022-07-20 00:28:07,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:07" (1/1) ... [2022-07-20 00:28:07,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:07" (1/1) ... [2022-07-20 00:28:07,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 00:28:07,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 00:28:07,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 00:28:07,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 00:28:07,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:07" (1/1) ... [2022-07-20 00:28:07,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:28:07,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:28:07,769 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) [2022-07-20 00:28:07,798 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 [2022-07-20 00:28:07,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-20 00:28:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure rio_uevent [2022-07-20 00:28:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_uevent [2022-07-20 00:28:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-07-20 00:28:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-07-20 00:28:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-20 00:28:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 00:28:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-20 00:28:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 00:28:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 00:28:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 00:28:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 00:28:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 00:28:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 00:28:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-07-20 00:28:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-07-20 00:28:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-07-20 00:28:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-07-20 00:28:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-07-20 00:28:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-07-20 00:28:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-20 00:28:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-20 00:28:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-20 00:28:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-20 00:28:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_16 [2022-07-20 00:28:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_16 [2022-07-20 00:28:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 00:28:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 00:28:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_remove [2022-07-20 00:28:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_remove [2022-07-20 00:28:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 00:28:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 00:28:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-20 00:28:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-20 00:28:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-07-20 00:28:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-07-20 00:28:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure disc_work_handler [2022-07-20 00:28:07,828 INFO L138 BoogieDeclarations]: Found implementation of procedure disc_work_handler [2022-07-20 00:28:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 00:28:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~X~~u16~0~X~~u8~0~X~~u32~0~X~C_INT~X~~u32~0~TO~C_INT [2022-07-20 00:28:07,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~X~~u16~0~X~~u8~0~X~~u32~0~X~C_INT~X~~u32~0~TO~C_INT [2022-07-20 00:28:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_put [2022-07-20 00:28:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_put [2022-07-20 00:28:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 00:28:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-07-20 00:28:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-07-20 00:28:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-20 00:28:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-20 00:28:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-20 00:28:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-20 00:28:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-20 00:28:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_16 [2022-07-20 00:28:07,832 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_16 [2022-07-20 00:28:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 00:28:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 00:28:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 00:28:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_read_config_32 [2022-07-20 00:28:07,832 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_read_config_32 [2022-07-20 00:28:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-20 00:28:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 00:28:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_write_config_32 [2022-07-20 00:28:07,833 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_write_config_32 [2022-07-20 00:28:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-20 00:28:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-20 00:28:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-07-20 00:28:07,833 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-07-20 00:28:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-20 00:28:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-20 00:28:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure rio_name [2022-07-20 00:28:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_name [2022-07-20 00:28:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-20 00:28:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-20 00:28:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_probe [2022-07-20 00:28:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_probe [2022-07-20 00:28:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-20 00:28:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-20 00:28:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_32 [2022-07-20 00:28:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_32 [2022-07-20 00:28:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-07-20 00:28:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-07-20 00:28:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_get [2022-07-20 00:28:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_get [2022-07-20 00:28:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~X~~u16~0~X~~u8~0~X~~u32~0~X~C_INT~X~$Pointer$~TO~C_INT [2022-07-20 00:28:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~X~~u16~0~X~~u8~0~X~~u32~0~X~C_INT~X~$Pointer$~TO~C_INT [2022-07-20 00:28:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-20 00:28:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-20 00:28:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~C_INT [2022-07-20 00:28:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~C_INT [2022-07-20 00:28:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 00:28:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 00:28:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-20 00:28:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-20 00:28:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 00:28:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-20 00:28:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-20 00:28:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 00:28:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 00:28:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-20 00:28:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2022-07-20 00:28:07,841 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2022-07-20 00:28:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_8 [2022-07-20 00:28:07,841 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_8 [2022-07-20 00:28:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_bus [2022-07-20 00:28:07,841 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_bus [2022-07-20 00:28:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_32 [2022-07-20 00:28:07,842 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_32 [2022-07-20 00:28:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-07-20 00:28:07,842 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-07-20 00:28:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_device [2022-07-20 00:28:07,842 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_device [2022-07-20 00:28:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-20 00:28:07,843 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-20 00:28:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_8 [2022-07-20 00:28:07,846 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_8 [2022-07-20 00:28:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 00:28:07,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 00:28:08,529 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 00:28:08,531 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 00:28:09,029 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 00:28:17,840 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 00:28:17,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 00:28:17,859 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 00:28:17,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:28:17 BoogieIcfgContainer [2022-07-20 00:28:17,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 00:28:17,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 00:28:17,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 00:28:17,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 00:28:17,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:28:03" (1/3) ... [2022-07-20 00:28:17,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b540e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:28:17, skipping insertion in model container [2022-07-20 00:28:17,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:28:07" (2/3) ... [2022-07-20 00:28:17,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b540e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:28:17, skipping insertion in model container [2022-07-20 00:28:17,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:28:17" (3/3) ... [2022-07-20 00:28:17,870 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-07-20 00:28:17,885 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 00:28:17,885 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 00:28:17,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 00:28:17,992 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@3dbcb9f1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@16f0cbb6 [2022-07-20 00:28:17,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 00:28:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 914 states, 670 states have (on average 1.3761194029850747) internal successors, (922), 701 states have internal predecessors, (922), 196 states have call successors, (196), 47 states have call predecessors, (196), 46 states have return successors, (176), 175 states have call predecessors, (176), 176 states have call successors, (176) [2022-07-20 00:28:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-20 00:28:18,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:28:18,022 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:28:18,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:28:18,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:28:18,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1330153297, now seen corresponding path program 1 times [2022-07-20 00:28:18,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:28:18,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501241763] [2022-07-20 00:28:18,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:28:18,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:28:18,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:28:18,055 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) [2022-07-20 00:28:18,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 00:28:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:28:32,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 3234 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-20 00:28:32,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:28:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-20 00:28:32,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:28:32,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:28:32,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501241763] [2022-07-20 00:28:32,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501241763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:28:32,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:28:32,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 00:28:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314682498] [2022-07-20 00:28:32,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:28:32,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-20 00:28:32,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:28:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-20 00:28:32,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 00:28:32,740 INFO L87 Difference]: Start difference. First operand has 914 states, 670 states have (on average 1.3761194029850747) internal successors, (922), 701 states have internal predecessors, (922), 196 states have call successors, (196), 47 states have call predecessors, (196), 46 states have return successors, (176), 175 states have call predecessors, (176), 176 states have call successors, (176) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-20 00:28:32,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:28:32,839 INFO L93 Difference]: Finished difference Result 1823 states and 2664 transitions. [2022-07-20 00:28:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-20 00:28:32,841 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 84 [2022-07-20 00:28:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:28:32,872 INFO L225 Difference]: With dead ends: 1823 [2022-07-20 00:28:32,873 INFO L226 Difference]: Without dead ends: 887 [2022-07-20 00:28:32,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 00:28:32,891 INFO L413 NwaCegarLoop]: 1289 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, 1289 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 [2022-07-20 00:28:32,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 00:28:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-07-20 00:28:33,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887. [2022-07-20 00:28:33,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 665 states have (on average 1.344360902255639) internal successors, (894), 674 states have internal predecessors, (894), 176 states have call successors, (176), 46 states have call predecessors, (176), 45 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2022-07-20 00:28:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1244 transitions. [2022-07-20 00:28:33,028 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1244 transitions. Word has length 84 [2022-07-20 00:28:33,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:28:33,029 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1244 transitions. [2022-07-20 00:28:33,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-20 00:28:33,029 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1244 transitions. [2022-07-20 00:28:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-20 00:28:33,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:28:33,038 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:28:33,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-20 00:28:33,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:28:33,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:28:33,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:28:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1244223321, now seen corresponding path program 1 times [2022-07-20 00:28:33,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:28:33,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552796657] [2022-07-20 00:28:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:28:33,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:28:33,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:28:33,260 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) [2022-07-20 00:28:33,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 00:28:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:28:47,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 3234 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:28:47,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:28:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-20 00:28:47,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:28:47,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:28:47,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552796657] [2022-07-20 00:28:47,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552796657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:28:47,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:28:47,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:28:47,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935460660] [2022-07-20 00:28:47,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:28:47,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:28:47,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:28:47,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:28:47,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:28:47,808 INFO L87 Difference]: Start difference. First operand 887 states and 1244 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 00:28:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:28:48,334 INFO L93 Difference]: Finished difference Result 2612 states and 3667 transitions. [2022-07-20 00:28:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:28:48,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2022-07-20 00:28:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:28:48,349 INFO L225 Difference]: With dead ends: 2612 [2022-07-20 00:28:48,350 INFO L226 Difference]: Without dead ends: 1737 [2022-07-20 00:28:48,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:28:48,356 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1191 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 00:28:48,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 2641 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 00:28:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2022-07-20 00:28:48,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1734. [2022-07-20 00:28:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1302 states have (on average 1.34715821812596) internal successors, (1754), 1319 states have internal predecessors, (1754), 341 states have call successors, (341), 91 states have call predecessors, (341), 90 states have return successors, (339), 337 states have call predecessors, (339), 339 states have call successors, (339) [2022-07-20 00:28:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2434 transitions. [2022-07-20 00:28:48,452 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2434 transitions. Word has length 84 [2022-07-20 00:28:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:28:48,455 INFO L495 AbstractCegarLoop]: Abstraction has 1734 states and 2434 transitions. [2022-07-20 00:28:48,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 00:28:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2434 transitions. [2022-07-20 00:28:48,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-20 00:28:48,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:28:48,465 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:28:48,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 00:28:48,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:28:48,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:28:48,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:28:48,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1059971624, now seen corresponding path program 1 times [2022-07-20 00:28:48,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:28:48,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504766618] [2022-07-20 00:28:48,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:28:48,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:28:48,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:28:48,696 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) [2022-07-20 00:28:48,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 00:29:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:29:02,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 3260 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:29:02,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:29:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-20 00:29:02,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:29:02,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:29:02,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504766618] [2022-07-20 00:29:02,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504766618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:29:02,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:29:02,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 00:29:02,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943150721] [2022-07-20 00:29:02,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:29:02,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:29:02,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:29:02,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:29:02,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:29:02,566 INFO L87 Difference]: Start difference. First operand 1734 states and 2434 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 00:29:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:29:02,676 INFO L93 Difference]: Finished difference Result 5175 states and 7335 transitions. [2022-07-20 00:29:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:29:02,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 90 [2022-07-20 00:29:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:29:02,699 INFO L225 Difference]: With dead ends: 5175 [2022-07-20 00:29:02,700 INFO L226 Difference]: Without dead ends: 3450 [2022-07-20 00:29:02,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:29:02,710 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 1191 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:29:02,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 2676 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 00:29:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2022-07-20 00:29:02,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 3446. [2022-07-20 00:29:02,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3446 states, 2589 states have (on average 1.347238315952105) internal successors, (3488), 2622 states have internal predecessors, (3488), 676 states have call successors, (676), 181 states have call predecessors, (676), 180 states have return successors, (708), 670 states have call predecessors, (708), 674 states have call successors, (708) [2022-07-20 00:29:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 4872 transitions. [2022-07-20 00:29:02,871 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 4872 transitions. Word has length 90 [2022-07-20 00:29:02,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:29:02,872 INFO L495 AbstractCegarLoop]: Abstraction has 3446 states and 4872 transitions. [2022-07-20 00:29:02,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 00:29:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 4872 transitions. [2022-07-20 00:29:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-20 00:29:02,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:29:02,876 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:29:03,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 00:29:03,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:29:03,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:29:03,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:29:03,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1482268491, now seen corresponding path program 1 times [2022-07-20 00:29:03,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:29:03,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507124489] [2022-07-20 00:29:03,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:29:03,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:29:03,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:29:03,091 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) [2022-07-20 00:29:03,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 00:29:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:29:16,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:29:16,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:29:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-20 00:29:16,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:29:16,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:29:16,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507124489] [2022-07-20 00:29:16,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507124489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:29:16,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:29:16,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:29:16,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852360671] [2022-07-20 00:29:16,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:29:16,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:29:16,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:29:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:29:16,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:29:16,090 INFO L87 Difference]: Start difference. First operand 3446 states and 4872 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-20 00:29:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:29:16,552 INFO L93 Difference]: Finished difference Result 10206 states and 14403 transitions. [2022-07-20 00:29:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:29:16,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 117 [2022-07-20 00:29:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:29:16,595 INFO L225 Difference]: With dead ends: 10206 [2022-07-20 00:29:16,595 INFO L226 Difference]: Without dead ends: 6772 [2022-07-20 00:29:16,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:29:16,667 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 1187 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:29:16,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 2617 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 00:29:16,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2022-07-20 00:29:16,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6760. [2022-07-20 00:29:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6760 states, 5079 states have (on average 1.3443591258121677) internal successors, (6828), 5146 states have internal predecessors, (6828), 1320 states have call successors, (1320), 361 states have call predecessors, (1320), 360 states have return successors, (1384), 1308 states have call predecessors, (1384), 1318 states have call successors, (1384) [2022-07-20 00:29:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6760 states to 6760 states and 9532 transitions. [2022-07-20 00:29:16,943 INFO L78 Accepts]: Start accepts. Automaton has 6760 states and 9532 transitions. Word has length 117 [2022-07-20 00:29:16,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:29:16,944 INFO L495 AbstractCegarLoop]: Abstraction has 6760 states and 9532 transitions. [2022-07-20 00:29:16,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-20 00:29:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6760 states and 9532 transitions. [2022-07-20 00:29:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-20 00:29:16,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:29:16,947 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:29:17,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 00:29:17,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:29:17,148 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:29:17,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:29:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1308063919, now seen corresponding path program 1 times [2022-07-20 00:29:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:29:17,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532190325] [2022-07-20 00:29:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:29:17,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:29:17,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:29:17,154 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) [2022-07-20 00:29:17,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 00:29:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:29:31,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 3444 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:29:31,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:29:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-20 00:29:31,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:29:31,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:29:31,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532190325] [2022-07-20 00:29:31,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532190325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:29:31,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:29:31,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:29:31,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804474902] [2022-07-20 00:29:31,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:29:31,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:29:31,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:29:31,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:29:31,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:29:31,749 INFO L87 Difference]: Start difference. First operand 6760 states and 9532 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-20 00:29:32,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:29:32,450 INFO L93 Difference]: Finished difference Result 19672 states and 27683 transitions. [2022-07-20 00:29:32,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:29:32,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 129 [2022-07-20 00:29:32,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:29:32,557 INFO L225 Difference]: With dead ends: 19672 [2022-07-20 00:29:32,558 INFO L226 Difference]: Without dead ends: 12924 [2022-07-20 00:29:32,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:29:32,596 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1171 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:29:32,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 2809 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 00:29:32,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12924 states. [2022-07-20 00:29:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12924 to 12908. [2022-07-20 00:29:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12908 states, 9683 states have (on average 1.3388412682020034) internal successors, (12964), 9806 states have internal predecessors, (12964), 2528 states have call successors, (2528), 697 states have call predecessors, (2528), 696 states have return successors, (2652), 2508 states have call predecessors, (2652), 2526 states have call successors, (2652) [2022-07-20 00:29:33,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12908 states to 12908 states and 18144 transitions. [2022-07-20 00:29:33,165 INFO L78 Accepts]: Start accepts. Automaton has 12908 states and 18144 transitions. Word has length 129 [2022-07-20 00:29:33,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:29:33,166 INFO L495 AbstractCegarLoop]: Abstraction has 12908 states and 18144 transitions. [2022-07-20 00:29:33,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-20 00:29:33,167 INFO L276 IsEmpty]: Start isEmpty. Operand 12908 states and 18144 transitions. [2022-07-20 00:29:33,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-20 00:29:33,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:29:33,175 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:29:33,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 00:29:33,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:29:33,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:29:33,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:29:33,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1772618993, now seen corresponding path program 1 times [2022-07-20 00:29:33,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:29:33,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066542676] [2022-07-20 00:29:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:29:33,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:29:33,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:29:33,407 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) [2022-07-20 00:29:33,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 00:29:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:29:47,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 3542 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:29:47,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:29:47,461 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-20 00:29:47,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:29:47,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:29:47,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066542676] [2022-07-20 00:29:47,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066542676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:29:47,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:29:47,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:29:47,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069277903] [2022-07-20 00:29:47,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:29:47,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:29:47,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:29:47,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:29:47,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:29:47,465 INFO L87 Difference]: Start difference. First operand 12908 states and 18144 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-07-20 00:29:48,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:29:48,195 INFO L93 Difference]: Finished difference Result 35140 states and 49263 transitions. [2022-07-20 00:29:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:29:48,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 165 [2022-07-20 00:29:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:29:48,329 INFO L225 Difference]: With dead ends: 35140 [2022-07-20 00:29:48,329 INFO L226 Difference]: Without dead ends: 22244 [2022-07-20 00:29:48,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:29:48,383 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 920 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:29:48,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 2845 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 00:29:48,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22244 states. [2022-07-20 00:29:49,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22244 to 22232. [2022-07-20 00:29:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22232 states, 16719 states have (on average 1.3369220647167892) internal successors, (22352), 16886 states have internal predecessors, (22352), 4306 states have call successors, (4306), 1207 states have call predecessors, (4306), 1206 states have return successors, (4450), 4266 states have call predecessors, (4450), 4304 states have call successors, (4450) [2022-07-20 00:29:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22232 states to 22232 states and 31108 transitions. [2022-07-20 00:29:49,290 INFO L78 Accepts]: Start accepts. Automaton has 22232 states and 31108 transitions. Word has length 165 [2022-07-20 00:29:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:29:49,292 INFO L495 AbstractCegarLoop]: Abstraction has 22232 states and 31108 transitions. [2022-07-20 00:29:49,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-07-20 00:29:49,293 INFO L276 IsEmpty]: Start isEmpty. Operand 22232 states and 31108 transitions. [2022-07-20 00:29:49,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-20 00:29:49,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:29:49,304 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2022-07-20 00:29:49,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 00:29:49,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:29:49,527 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:29:49,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:29:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash 961848686, now seen corresponding path program 1 times [2022-07-20 00:29:49,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:29:49,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722197172] [2022-07-20 00:29:49,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:29:49,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:29:49,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:29:49,532 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) [2022-07-20 00:29:49,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 00:30:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:30:04,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 3689 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 00:30:04,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:30:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-07-20 00:30:05,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:30:05,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:30:05,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722197172] [2022-07-20 00:30:05,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722197172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:30:05,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:30:05,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 00:30:05,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209047962] [2022-07-20 00:30:05,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:30:05,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 00:30:05,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:30:05,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 00:30:05,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:30:05,138 INFO L87 Difference]: Start difference. First operand 22232 states and 31108 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-20 00:30:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:30:05,873 INFO L93 Difference]: Finished difference Result 33987 states and 47573 transitions. [2022-07-20 00:30:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 00:30:05,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 208 [2022-07-20 00:30:05,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:30:05,928 INFO L225 Difference]: With dead ends: 33987 [2022-07-20 00:30:05,928 INFO L226 Difference]: Without dead ends: 11719 [2022-07-20 00:30:05,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:30:05,990 INFO L413 NwaCegarLoop]: 1244 mSDtfsCounter, 21 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4963 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:30:05,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4963 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 00:30:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11719 states. [2022-07-20 00:30:06,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11719 to 11668. [2022-07-20 00:30:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11668 states, 8769 states have (on average 1.334929866575436) internal successors, (11706), 8860 states have internal predecessors, (11706), 2275 states have call successors, (2275), 624 states have call predecessors, (2275), 623 states have return successors, (2346), 2247 states have call predecessors, (2346), 2273 states have call successors, (2346) [2022-07-20 00:30:06,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11668 states to 11668 states and 16327 transitions. [2022-07-20 00:30:06,454 INFO L78 Accepts]: Start accepts. Automaton has 11668 states and 16327 transitions. Word has length 208 [2022-07-20 00:30:06,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:30:06,455 INFO L495 AbstractCegarLoop]: Abstraction has 11668 states and 16327 transitions. [2022-07-20 00:30:06,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-20 00:30:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 11668 states and 16327 transitions. [2022-07-20 00:30:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-20 00:30:06,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:30:06,467 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2022-07-20 00:30:06,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-20 00:30:06,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:30:06,687 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:30:06,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:30:06,688 INFO L85 PathProgramCache]: Analyzing trace with hash 303639209, now seen corresponding path program 1 times [2022-07-20 00:30:06,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:30:06,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006714255] [2022-07-20 00:30:06,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:30:06,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:30:06,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:30:06,697 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) [2022-07-20 00:30:06,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 00:30:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:30:20,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 3695 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:30:20,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:30:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-07-20 00:30:20,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:30:20,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:30:20,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006714255] [2022-07-20 00:30:20,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006714255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:30:20,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:30:20,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:30:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939143979] [2022-07-20 00:30:20,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:30:20,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:30:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:30:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:30:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:30:20,703 INFO L87 Difference]: Start difference. First operand 11668 states and 16327 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-20 00:30:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:30:21,288 INFO L93 Difference]: Finished difference Result 28412 states and 39780 transitions. [2022-07-20 00:30:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:30:21,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 210 [2022-07-20 00:30:21,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:30:21,363 INFO L225 Difference]: With dead ends: 28412 [2022-07-20 00:30:21,364 INFO L226 Difference]: Without dead ends: 17189 [2022-07-20 00:30:21,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:30:21,405 INFO L413 NwaCegarLoop]: 1985 mSDtfsCounter, 1178 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:30:21,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 3193 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 00:30:21,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17189 states. [2022-07-20 00:30:21,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17189 to 17172. [2022-07-20 00:30:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17172 states, 12941 states have (on average 1.3347500193184452) internal successors, (17273), 13072 states have internal predecessors, (17273), 3313 states have call successors, (3313), 918 states have call predecessors, (3313), 917 states have return successors, (3417), 3273 states have call predecessors, (3417), 3311 states have call successors, (3417) [2022-07-20 00:30:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17172 states to 17172 states and 24003 transitions. [2022-07-20 00:30:22,022 INFO L78 Accepts]: Start accepts. Automaton has 17172 states and 24003 transitions. Word has length 210 [2022-07-20 00:30:22,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:30:22,023 INFO L495 AbstractCegarLoop]: Abstraction has 17172 states and 24003 transitions. [2022-07-20 00:30:22,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-20 00:30:22,023 INFO L276 IsEmpty]: Start isEmpty. Operand 17172 states and 24003 transitions. [2022-07-20 00:30:22,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-20 00:30:22,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:30:22,036 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2022-07-20 00:30:22,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-20 00:30:22,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:30:22,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:30:22,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:30:22,252 INFO L85 PathProgramCache]: Analyzing trace with hash 913834821, now seen corresponding path program 1 times [2022-07-20 00:30:22,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:30:22,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925538511] [2022-07-20 00:30:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:30:22,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:30:22,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:30:22,258 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) [2022-07-20 00:30:22,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 00:30:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:30:35,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 3719 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:30:35,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:30:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-20 00:30:36,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:30:36,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:30:36,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925538511] [2022-07-20 00:30:36,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925538511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:30:36,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:30:36,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:30:36,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506598378] [2022-07-20 00:30:36,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:30:36,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:30:36,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:30:36,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:30:36,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:30:36,030 INFO L87 Difference]: Start difference. First operand 17172 states and 24003 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-20 00:30:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:30:36,857 INFO L93 Difference]: Finished difference Result 42006 states and 58753 transitions. [2022-07-20 00:30:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:30:36,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 222 [2022-07-20 00:30:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:30:36,961 INFO L225 Difference]: With dead ends: 42006 [2022-07-20 00:30:36,961 INFO L226 Difference]: Without dead ends: 25279 [2022-07-20 00:30:37,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:30:37,017 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 1162 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 3179 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 00:30:37,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 3179 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 00:30:37,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25279 states. [2022-07-20 00:30:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25279 to 25242. [2022-07-20 00:30:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25242 states, 19075 states have (on average 1.3344692005242464) internal successors, (25455), 19260 states have internal predecessors, (25455), 4823 states have call successors, (4823), 1344 states have call predecessors, (4823), 1343 states have return successors, (4974), 4767 states have call predecessors, (4974), 4821 states have call successors, (4974) [2022-07-20 00:30:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25242 states to 25242 states and 35252 transitions. [2022-07-20 00:30:37,942 INFO L78 Accepts]: Start accepts. Automaton has 25242 states and 35252 transitions. Word has length 222 [2022-07-20 00:30:37,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:30:37,943 INFO L495 AbstractCegarLoop]: Abstraction has 25242 states and 35252 transitions. [2022-07-20 00:30:37,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-20 00:30:37,943 INFO L276 IsEmpty]: Start isEmpty. Operand 25242 states and 35252 transitions. [2022-07-20 00:30:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-20 00:30:37,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:30:37,960 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:30:38,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-07-20 00:30:38,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:30:38,176 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:30:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:30:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash -723866641, now seen corresponding path program 1 times [2022-07-20 00:30:38,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:30:38,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574959215] [2022-07-20 00:30:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:30:38,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:30:38,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:30:38,181 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) [2022-07-20 00:30:38,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 00:30:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:30:52,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 3754 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 00:30:52,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:30:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-20 00:30:52,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:30:52,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:30:52,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574959215] [2022-07-20 00:30:52,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574959215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:30:52,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:30:52,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:30:52,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224233720] [2022-07-20 00:30:52,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:30:52,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:30:52,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:30:52,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:30:52,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:30:52,224 INFO L87 Difference]: Start difference. First operand 25242 states and 35252 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-20 00:30:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:30:53,629 INFO L93 Difference]: Finished difference Result 58786 states and 82094 transitions. [2022-07-20 00:30:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 00:30:53,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 229 [2022-07-20 00:30:53,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:30:53,926 INFO L225 Difference]: With dead ends: 58786 [2022-07-20 00:30:53,926 INFO L226 Difference]: Without dead ends: 33989 [2022-07-20 00:30:54,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 00:30:54,032 INFO L413 NwaCegarLoop]: 2436 mSDtfsCounter, 1234 mSDsluCounter, 8474 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 10910 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 00:30:54,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 10910 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 00:30:54,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33989 states. [2022-07-20 00:30:55,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33989 to 25334. [2022-07-20 00:30:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25334 states, 19143 states have (on average 1.333281094917202) internal successors, (25523), 19340 states have internal predecessors, (25523), 4835 states have call successors, (4835), 1344 states have call predecessors, (4835), 1355 states have return successors, (5002), 4791 states have call predecessors, (5002), 4833 states have call successors, (5002) [2022-07-20 00:30:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25334 states to 25334 states and 35360 transitions. [2022-07-20 00:30:55,333 INFO L78 Accepts]: Start accepts. Automaton has 25334 states and 35360 transitions. Word has length 229 [2022-07-20 00:30:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:30:55,338 INFO L495 AbstractCegarLoop]: Abstraction has 25334 states and 35360 transitions. [2022-07-20 00:30:55,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-20 00:30:55,338 INFO L276 IsEmpty]: Start isEmpty. Operand 25334 states and 35360 transitions. [2022-07-20 00:30:55,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-20 00:30:55,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:30:55,353 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2022-07-20 00:30:55,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 00:30:55,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:30:55,576 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:30:55,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:30:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash 19633893, now seen corresponding path program 1 times [2022-07-20 00:30:55,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:30:55,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086828225] [2022-07-20 00:30:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:30:55,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:30:55,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:30:55,583 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) [2022-07-20 00:30:55,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-20 00:31:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:31:09,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 3817 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 00:31:09,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:31:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-07-20 00:31:10,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:31:10,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:31:10,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086828225] [2022-07-20 00:31:10,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086828225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:31:10,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:31:10,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:31:10,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340617085] [2022-07-20 00:31:10,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:31:10,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:31:10,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:31:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:31:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:31:10,028 INFO L87 Difference]: Start difference. First operand 25334 states and 35360 transitions. Second operand has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-20 00:31:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:31:10,804 INFO L93 Difference]: Finished difference Result 50878 states and 71092 transitions. [2022-07-20 00:31:10,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 00:31:10,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 258 [2022-07-20 00:31:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:31:11,020 INFO L225 Difference]: With dead ends: 50878 [2022-07-20 00:31:11,021 INFO L226 Difference]: Without dead ends: 25371 [2022-07-20 00:31:11,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:31:11,086 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 6 mSDsluCounter, 4925 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6161 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 00:31:11,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6161 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 00:31:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25371 states. [2022-07-20 00:31:11,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25371 to 25371. [2022-07-20 00:31:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25371 states, 19180 states have (on average 1.332638164754953) internal successors, (25560), 19377 states have internal predecessors, (25560), 4835 states have call successors, (4835), 1344 states have call predecessors, (4835), 1355 states have return successors, (5002), 4791 states have call predecessors, (5002), 4833 states have call successors, (5002) [2022-07-20 00:31:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25371 states to 25371 states and 35397 transitions. [2022-07-20 00:31:11,965 INFO L78 Accepts]: Start accepts. Automaton has 25371 states and 35397 transitions. Word has length 258 [2022-07-20 00:31:11,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:31:11,966 INFO L495 AbstractCegarLoop]: Abstraction has 25371 states and 35397 transitions. [2022-07-20 00:31:11,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-20 00:31:11,967 INFO L276 IsEmpty]: Start isEmpty. Operand 25371 states and 35397 transitions. [2022-07-20 00:31:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-20 00:31:11,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:31:11,983 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2022-07-20 00:31:12,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-20 00:31:12,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:31:12,203 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:31:12,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:31:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1355053615, now seen corresponding path program 1 times [2022-07-20 00:31:12,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:31:12,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301295845] [2022-07-20 00:31:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:31:12,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:31:12,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:31:12,210 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) [2022-07-20 00:31:12,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-20 00:31:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:31:25,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 3828 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 00:31:25,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:31:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-07-20 00:31:25,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:31:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-07-20 00:31:26,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:31:26,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301295845] [2022-07-20 00:31:26,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301295845] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:31:26,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:31:26,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-20 00:31:26,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595595985] [2022-07-20 00:31:26,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:31:26,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 00:31:26,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:31:26,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 00:31:26,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-20 00:31:26,535 INFO L87 Difference]: Start difference. First operand 25371 states and 35397 transitions. Second operand has 11 states, 9 states have (on average 12.222222222222221) internal successors, (110), 11 states have internal predecessors, (110), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-20 00:31:27,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:31:27,406 INFO L93 Difference]: Finished difference Result 50952 states and 71166 transitions. [2022-07-20 00:31:27,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:31:27,407 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 12.222222222222221) internal successors, (110), 11 states have internal predecessors, (110), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 259 [2022-07-20 00:31:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:31:27,483 INFO L225 Difference]: With dead ends: 50952 [2022-07-20 00:31:27,483 INFO L226 Difference]: Without dead ends: 25408 [2022-07-20 00:31:27,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-20 00:31:27,543 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 9 mSDsluCounter, 8616 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9852 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:31:27,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9852 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 00:31:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25408 states. [2022-07-20 00:31:28,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25408 to 25408. [2022-07-20 00:31:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25408 states, 19217 states have (on average 1.3319977103606182) internal successors, (25597), 19414 states have internal predecessors, (25597), 4835 states have call successors, (4835), 1344 states have call predecessors, (4835), 1355 states have return successors, (5002), 4791 states have call predecessors, (5002), 4833 states have call successors, (5002) [2022-07-20 00:31:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25408 states to 25408 states and 35434 transitions. [2022-07-20 00:31:28,258 INFO L78 Accepts]: Start accepts. Automaton has 25408 states and 35434 transitions. Word has length 259 [2022-07-20 00:31:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:31:28,258 INFO L495 AbstractCegarLoop]: Abstraction has 25408 states and 35434 transitions. [2022-07-20 00:31:28,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 12.222222222222221) internal successors, (110), 11 states have internal predecessors, (110), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-20 00:31:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 25408 states and 35434 transitions. [2022-07-20 00:31:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-20 00:31:28,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:31:28,274 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2022-07-20 00:31:28,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-20 00:31:28,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:31:28,495 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:31:28,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:31:28,496 INFO L85 PathProgramCache]: Analyzing trace with hash -196607963, now seen corresponding path program 2 times [2022-07-20 00:31:28,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:31:28,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872333846] [2022-07-20 00:31:28,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:31:28,499 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:31:28,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:31:28,500 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) [2022-07-20 00:31:28,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-20 00:31:40,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 00:31:40,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:31:41,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 3238 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:31:41,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:31:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2022-07-20 00:31:42,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:31:42,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:31:42,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872333846] [2022-07-20 00:31:42,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872333846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:31:42,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:31:42,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 00:31:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621915324] [2022-07-20 00:31:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:31:42,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:31:42,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:31:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:31:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:31:42,004 INFO L87 Difference]: Start difference. First operand 25408 states and 35434 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-20 00:31:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:31:42,436 INFO L93 Difference]: Finished difference Result 47373 states and 65914 transitions. [2022-07-20 00:31:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:31:42,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 260 [2022-07-20 00:31:42,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:31:42,497 INFO L225 Difference]: With dead ends: 47373 [2022-07-20 00:31:42,498 INFO L226 Difference]: Without dead ends: 22412 [2022-07-20 00:31:42,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:31:42,557 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 921 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:31:42,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 00:31:42,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22412 states. [2022-07-20 00:31:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22412 to 22412. [2022-07-20 00:31:43,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22412 states, 17031 states have (on average 1.3286947331336973) internal successors, (22629), 17138 states have internal predecessors, (22629), 4201 states have call successors, (4201), 1168 states have call predecessors, (4201), 1179 states have return successors, (4256), 4157 states have call predecessors, (4256), 4199 states have call successors, (4256) [2022-07-20 00:31:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22412 states to 22412 states and 31086 transitions. [2022-07-20 00:31:43,324 INFO L78 Accepts]: Start accepts. Automaton has 22412 states and 31086 transitions. Word has length 260 [2022-07-20 00:31:43,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:31:43,325 INFO L495 AbstractCegarLoop]: Abstraction has 22412 states and 31086 transitions. [2022-07-20 00:31:43,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-20 00:31:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 22412 states and 31086 transitions. [2022-07-20 00:31:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-20 00:31:43,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:31:43,344 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:31:43,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-20 00:31:43,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:31:43,564 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:31:43,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:31:43,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1761985865, now seen corresponding path program 1 times [2022-07-20 00:31:43,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:31:43,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290868165] [2022-07-20 00:31:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:31:43,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:31:43,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:31:43,568 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) [2022-07-20 00:31:43,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-20 00:31:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:31:56,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 3802 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 00:31:56,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:31:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-07-20 00:31:56,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:31:56,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:31:56,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290868165] [2022-07-20 00:31:56,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290868165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:31:56,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:31:56,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:31:56,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127029308] [2022-07-20 00:31:56,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:31:56,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:31:56,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:31:56,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:31:56,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:31:56,315 INFO L87 Difference]: Start difference. First operand 22412 states and 31086 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-20 00:31:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:31:57,499 INFO L93 Difference]: Finished difference Result 52142 states and 72236 transitions. [2022-07-20 00:31:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 00:31:57,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 253 [2022-07-20 00:31:57,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:31:57,579 INFO L225 Difference]: With dead ends: 52142 [2022-07-20 00:31:57,579 INFO L226 Difference]: Without dead ends: 30177 [2022-07-20 00:31:57,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 00:31:57,621 INFO L413 NwaCegarLoop]: 2004 mSDtfsCounter, 1017 mSDsluCounter, 6961 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 8965 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 00:31:57,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 8965 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 00:31:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30177 states. [2022-07-20 00:31:58,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30177 to 22468. [2022-07-20 00:31:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22468 states, 17071 states have (on average 1.327924550407123) internal successors, (22669), 17182 states have internal predecessors, (22669), 4209 states have call successors, (4209), 1168 states have call predecessors, (4209), 1187 states have return successors, (4272), 4177 states have call predecessors, (4272), 4207 states have call successors, (4272) [2022-07-20 00:31:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22468 states to 22468 states and 31150 transitions. [2022-07-20 00:31:58,290 INFO L78 Accepts]: Start accepts. Automaton has 22468 states and 31150 transitions. Word has length 253 [2022-07-20 00:31:58,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:31:58,291 INFO L495 AbstractCegarLoop]: Abstraction has 22468 states and 31150 transitions. [2022-07-20 00:31:58,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-20 00:31:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 22468 states and 31150 transitions. [2022-07-20 00:31:58,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-07-20 00:31:58,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:31:58,305 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:31:58,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-20 00:31:58,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:31:58,520 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:31:58,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:31:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash 409972541, now seen corresponding path program 1 times [2022-07-20 00:31:58,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:31:58,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379176987] [2022-07-20 00:31:58,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:31:58,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:31:58,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:31:58,525 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) [2022-07-20 00:31:58,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process