./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.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 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 00:14:46,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:14:46,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:14:46,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:14:46,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:14:46,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:14:46,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:14:46,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:14:46,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:14:46,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:14:46,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:14:46,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:14:46,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:14:46,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:14:46,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:14:46,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:14:46,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:14:46,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:14:46,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:14:46,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:14:46,677 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:14:46,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:14:46,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:14:46,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:14:46,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:14:46,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:14:46,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:14:46,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:14:46,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:14:46,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:14:46,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:14:46,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:14:46,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:14:46,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:14:46,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:14:46,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:14:46,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:14:46,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:14:46,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:14:46,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:14:46,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:14:46,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:14:46,704 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 00:14:46,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:14:46,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:14:46,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:14:46,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:14:46,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:14:46,741 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:14:46,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:14:46,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:14:46,743 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:14:46,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:14:46,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 00:14:46,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:14:46,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:14:46,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:14:46,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:14:46,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:14:46,745 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:14:46,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:14:46,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:14:46,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:14:46,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:14:46,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:14:46,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:14:46,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:14:46,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:14:46,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 00:14:46,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 00:14:46,748 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:14:46,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:14:46,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:14:46,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 [2022-07-14 00:14:47,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:14:47,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:14:47,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:14:47,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:14:47,049 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:14:47,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2022-07-14 00:14:47,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d510085f8/6c30137f53b94b3a81d234471e121f82/FLAGc147b883b [2022-07-14 00:14:47,906 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:14:47,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2022-07-14 00:14:47,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d510085f8/6c30137f53b94b3a81d234471e121f82/FLAGc147b883b [2022-07-14 00:14:48,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d510085f8/6c30137f53b94b3a81d234471e121f82 [2022-07-14 00:14:48,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:14:48,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:14:48,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:14:48,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:14:48,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:14:48,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:14:48" (1/1) ... [2022-07-14 00:14:48,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e385009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:48, skipping insertion in model container [2022-07-14 00:14:48,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:14:48" (1/1) ... [2022-07-14 00:14:48,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:14:48,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:14:49,019 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2022-07-14 00:14:49,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:14:49,679 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:14:49,799 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2022-07-14 00:14:49,864 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: val = (unsigned int )val & 246U [6182] 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) [2022-07-14 00:14:49,881 INFO L158 Benchmark]: Toolchain (without parser) took 1868.61ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 57.4MB in the beginning and 69.8MB in the end (delta: -12.4MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2022-07-14 00:14:49,882 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 98.6MB. Free memory was 54.7MB in the beginning and 54.6MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 00:14:49,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1866.39ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 57.2MB in the beginning and 69.8MB in the end (delta: -12.6MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2022-07-14 00:14:49,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 98.6MB. Free memory was 54.7MB in the beginning and 54.6MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1866.39ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 57.2MB in the beginning and 69.8MB in the end (delta: -12.6MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: val = (unsigned int )val & 246U [6182] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: val = (unsigned int )val & 246U [6182]: de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.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 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 00:14:51,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:14:51,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:14:51,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:14:51,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:14:51,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:14:51,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:14:51,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:14:51,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:14:51,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:14:51,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:14:51,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:14:51,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:14:51,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:14:51,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:14:51,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:14:51,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:14:51,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:14:51,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:14:51,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:14:51,945 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:14:51,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:14:51,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:14:51,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:14:51,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:14:51,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:14:51,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:14:51,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:14:51,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:14:51,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:14:51,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:14:51,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:14:51,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:14:51,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:14:51,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:14:51,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:14:51,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:14:51,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:14:51,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:14:51,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:14:51,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:14:51,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:14:51,963 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-14 00:14:51,986 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:14:51,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:14:51,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:14:51,987 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:14:51,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:14:51,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:14:51,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:14:51,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:14:51,989 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:14:51,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:14:51,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:14:51,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:14:51,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:14:51,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:14:51,991 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 00:14:51,991 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 00:14:51,991 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 00:14:51,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:14:51,992 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:14:51,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:14:51,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:14:51,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:14:51,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:14:51,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:14:51,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:14:51,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:14:51,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:14:51,994 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 00:14:51,994 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 00:14:51,994 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:14:51,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:14:51,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:14:51,995 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 00:14:51,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 [2022-07-14 00:14:52,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:14:52,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:14:52,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:14:52,426 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:14:52,427 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:14:52,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2022-07-14 00:14:52,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24aec444f/e89762f2518d4de4939934dda8c47219/FLAG2305489aa [2022-07-14 00:14:53,360 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:14:53,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2022-07-14 00:14:53,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24aec444f/e89762f2518d4de4939934dda8c47219/FLAG2305489aa [2022-07-14 00:14:53,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24aec444f/e89762f2518d4de4939934dda8c47219 [2022-07-14 00:14:53,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:14:53,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:14:53,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:14:53,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:14:53,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:14:53,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:14:53" (1/1) ... [2022-07-14 00:14:53,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5beee84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:53, skipping insertion in model container [2022-07-14 00:14:53,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:14:53" (1/1) ... [2022-07-14 00:14:53,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:14:53,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:14:54,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2022-07-14 00:14:55,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:14:55,164 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 00:14:55,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:14:55,356 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2022-07-14 00:14:55,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:14:55,530 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:14:55,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2022-07-14 00:14:55,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:14:55,868 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:14:55,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:55 WrapperNode [2022-07-14 00:14:55,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:14:55,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:14:55,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:14:55,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:14:55,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:55" (1/1) ... [2022-07-14 00:14:55,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:55" (1/1) ... [2022-07-14 00:14:56,017 INFO L137 Inliner]: procedures = 152, calls = 1066, calls flagged for inlining = 55, calls inlined = 52, statements flattened = 1815 [2022-07-14 00:14:56,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:14:56,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:14:56,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:14:56,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:14:56,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:55" (1/1) ... [2022-07-14 00:14:56,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:55" (1/1) ... [2022-07-14 00:14:56,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:55" (1/1) ... [2022-07-14 00:14:56,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:55" (1/1) ... [2022-07-14 00:14:56,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:55" (1/1) ... [2022-07-14 00:14:56,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:55" (1/1) ... [2022-07-14 00:14:56,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:55" (1/1) ... [2022-07-14 00:14:56,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:14:56,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:14:56,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:14:56,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:14:56,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:55" (1/1) ... [2022-07-14 00:14:56,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:14:56,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:14:56,345 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) [2022-07-14 00:14:56,409 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 [2022-07-14 00:14:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-14 00:14:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure devm_request_threaded_irq [2022-07-14 00:14:56,435 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_request_threaded_irq [2022-07-14 00:14:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-14 00:14:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 00:14:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-14 00:14:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 00:14:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:14:56,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:14:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure write_long_reg [2022-07-14 00:14:56,437 INFO L138 BoogieDeclarations]: Found implementation of procedure write_long_reg [2022-07-14 00:14:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-07-14 00:14:56,437 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-07-14 00:14:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 00:14:56,437 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 00:14:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-14 00:14:56,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-14 00:14:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-07-14 00:14:56,438 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-07-14 00:14:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:14:56,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:14:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-14 00:14:56,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-14 00:14:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-14 00:14:56,439 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-14 00:14:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:14:56,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:14:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-14 00:14:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-14 00:14:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-14 00:14:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-14 00:14:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 00:14:56,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 00:14:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_set_channel [2022-07-14 00:14:56,441 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_set_channel [2022-07-14 00:14:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-07-14 00:14:56,441 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-07-14 00:14:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:14:56,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:14:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure write_short_reg [2022-07-14 00:14:56,442 INFO L138 BoogieDeclarations]: Found implementation of procedure write_short_reg [2022-07-14 00:14:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:14:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:14:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure ieee802154_unregister_device [2022-07-14 00:14:56,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee802154_unregister_device [2022-07-14 00:14:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-14 00:14:56,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-14 00:14:56,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:14:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:14:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-14 00:14:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-14 00:14:56,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-14 00:14:56,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-14 00:14:56,445 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-07-14 00:14:56,445 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-07-14 00:14:56,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-14 00:14:56,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-07-14 00:14:56,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-07-14 00:14:56,446 INFO L130 BoogieDeclarations]: Found specification of procedure read_short_reg [2022-07-14 00:14:56,446 INFO L138 BoogieDeclarations]: Found implementation of procedure read_short_reg [2022-07-14 00:14:56,446 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_filter [2022-07-14 00:14:56,446 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_filter [2022-07-14 00:14:56,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:14:56,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-14 00:14:56,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-14 00:14:56,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-14 00:14:56,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-14 00:14:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-14 00:14:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:14:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 00:14:56,452 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-07-14 00:14:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-07-14 00:14:56,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:14:56,452 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-14 00:14:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-14 00:14:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-07-14 00:14:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-07-14 00:14:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-14 00:14:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_tx [2022-07-14 00:14:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_tx [2022-07-14 00:14:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_isr [2022-07-14 00:14:56,454 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_isr [2022-07-14 00:14:56,454 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_ed [2022-07-14 00:14:56,454 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_ed [2022-07-14 00:14:56,454 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-14 00:14:56,455 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-14 00:14:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure ieee802154_free_device [2022-07-14 00:14:56,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee802154_free_device [2022-07-14 00:14:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-14 00:14:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-14 00:14:56,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-14 00:14:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:14:56,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:14:56,928 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:14:56,930 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:14:59,459 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:15:35,466 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:15:35,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:15:35,479 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-14 00:15:35,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:15:35 BoogieIcfgContainer [2022-07-14 00:15:35,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:15:35,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:15:35,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:15:35,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:15:35,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:14:53" (1/3) ... [2022-07-14 00:15:35,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689c8f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:15:35, skipping insertion in model container [2022-07-14 00:15:35,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:55" (2/3) ... [2022-07-14 00:15:35,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689c8f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:15:35, skipping insertion in model container [2022-07-14 00:15:35,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:15:35" (3/3) ... [2022-07-14 00:15:35,495 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2022-07-14 00:15:35,510 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:15:35,510 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:15:35,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:15:35,602 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@18fb922c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@76a0333b [2022-07-14 00:15:35,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:15:35,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 621 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 453 states have internal predecessors, (601), 148 states have call successors, (148), 33 states have call predecessors, (148), 32 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2022-07-14 00:15:35,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-14 00:15:35,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:35,630 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:15:35,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:35,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash -829070541, now seen corresponding path program 1 times [2022-07-14 00:15:35,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:15:35,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126622838] [2022-07-14 00:15:35,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:35,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:15:35,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:15:35,654 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) [2022-07-14 00:15:35,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-14 00:15:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:36,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:15:36,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:15:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 00:15:36,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:15:36,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:15:36,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126622838] [2022-07-14 00:15:36,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126622838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:15:36,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:15:36,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 00:15:36,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165533907] [2022-07-14 00:15:36,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:36,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:15:36,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:15:36,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:15:36,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:15:36,872 INFO L87 Difference]: Start difference. First operand has 621 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 453 states have internal predecessors, (601), 148 states have call successors, (148), 33 states have call predecessors, (148), 32 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:15:38,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:15:39,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:15:39,439 INFO L93 Difference]: Finished difference Result 1823 states and 2771 transitions. [2022-07-14 00:15:39,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:15:39,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-07-14 00:15:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:15:39,469 INFO L225 Difference]: With dead ends: 1823 [2022-07-14 00:15:39,469 INFO L226 Difference]: Without dead ends: 1183 [2022-07-14 00:15:39,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:15:39,489 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 831 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:15:39,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1881 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-14 00:15:39,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-07-14 00:15:39,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2022-07-14 00:15:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 846 states have (on average 1.3321513002364067) internal successors, (1127), 854 states have internal predecessors, (1127), 274 states have call successors, (274), 63 states have call predecessors, (274), 62 states have return successors, (273), 273 states have call predecessors, (273), 273 states have call successors, (273) [2022-07-14 00:15:39,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1674 transitions. [2022-07-14 00:15:39,688 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1674 transitions. Word has length 37 [2022-07-14 00:15:39,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:15:39,689 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1674 transitions. [2022-07-14 00:15:39,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:15:39,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1674 transitions. [2022-07-14 00:15:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-14 00:15:39,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:39,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:15:39,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-14 00:15:39,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:15:39,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:39,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:39,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1782235712, now seen corresponding path program 1 times [2022-07-14 00:15:39,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:15:39,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775528977] [2022-07-14 00:15:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:39,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:15:39,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:15:39,930 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) [2022-07-14 00:15:39,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-14 00:15:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:40,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:15:40,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:15:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 00:15:41,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:15:41,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:15:41,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775528977] [2022-07-14 00:15:41,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775528977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:15:41,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:15:41,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:15:41,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175737062] [2022-07-14 00:15:41,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:41,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:15:41,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:15:41,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:15:41,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:15:41,893 INFO L87 Difference]: Start difference. First operand 1183 states and 1674 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:15:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:15:43,513 INFO L93 Difference]: Finished difference Result 3526 states and 5042 transitions. [2022-07-14 00:15:43,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:15:43,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-07-14 00:15:43,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:15:43,541 INFO L225 Difference]: With dead ends: 3526 [2022-07-14 00:15:43,541 INFO L226 Difference]: Without dead ends: 2346 [2022-07-14 00:15:43,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:15:43,552 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 835 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 3971 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:15:43,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 3971 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-14 00:15:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2022-07-14 00:15:43,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2338. [2022-07-14 00:15:43,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1669 states have (on average 1.3319352905931696) internal successors, (2223), 1685 states have internal predecessors, (2223), 544 states have call successors, (544), 125 states have call predecessors, (544), 124 states have return successors, (569), 543 states have call predecessors, (569), 543 states have call successors, (569) [2022-07-14 00:15:43,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3336 transitions. [2022-07-14 00:15:43,695 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3336 transitions. Word has length 39 [2022-07-14 00:15:43,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:15:43,696 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 3336 transitions. [2022-07-14 00:15:43,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:15:43,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3336 transitions. [2022-07-14 00:15:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-14 00:15:43,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:43,719 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-14 00:15:43,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-14 00:15:43,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:15:43,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:43,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:43,935 INFO L85 PathProgramCache]: Analyzing trace with hash -353908813, now seen corresponding path program 1 times [2022-07-14 00:15:43,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:15:43,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83781772] [2022-07-14 00:15:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:43,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:15:43,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:15:43,940 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) [2022-07-14 00:15:43,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-14 00:15:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:45,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:15:46,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:15:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-14 00:15:55,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:15:55,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:15:55,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83781772] [2022-07-14 00:15:55,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83781772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:15:55,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:15:55,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:15:55,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376362468] [2022-07-14 00:15:55,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:55,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:15:55,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:15:55,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:15:55,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:15:55,145 INFO L87 Difference]: Start difference. First operand 2338 states and 3336 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:15:57,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:15:59,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:16:15,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:15,715 INFO L93 Difference]: Finished difference Result 4694 states and 6715 transitions. [2022-07-14 00:16:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 00:16:15,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 233 [2022-07-14 00:16:15,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:15,767 INFO L225 Difference]: With dead ends: 4694 [2022-07-14 00:16:15,783 INFO L226 Difference]: Without dead ends: 2366 [2022-07-14 00:16:15,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:16:15,815 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 748 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:15,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1957 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 587 Invalid, 2 Unknown, 0 Unchecked, 20.1s Time] [2022-07-14 00:16:15,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2022-07-14 00:16:15,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2358. [2022-07-14 00:16:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 1683 states have (on average 1.3303624480095069) internal successors, (2239), 1705 states have internal predecessors, (2239), 544 states have call successors, (544), 125 states have call predecessors, (544), 130 states have return successors, (585), 543 states have call predecessors, (585), 543 states have call successors, (585) [2022-07-14 00:16:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 3368 transitions. [2022-07-14 00:16:15,972 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 3368 transitions. Word has length 233 [2022-07-14 00:16:15,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:15,976 INFO L495 AbstractCegarLoop]: Abstraction has 2358 states and 3368 transitions. [2022-07-14 00:16:15,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:16:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 3368 transitions. [2022-07-14 00:16:15,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-14 00:16:15,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:15,994 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-14 00:16:16,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-14 00:16:16,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:16:16,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:16,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:16,217 INFO L85 PathProgramCache]: Analyzing trace with hash -482558547, now seen corresponding path program 1 times [2022-07-14 00:16:16,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:16:16,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273928508] [2022-07-14 00:16:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:16,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:16:16,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:16:16,221 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) [2022-07-14 00:16:16,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-14 00:16:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:18,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 2758 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:16:18,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:16:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-14 00:16:30,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:16:30,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:16:30,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273928508] [2022-07-14 00:16:30,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273928508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:30,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:30,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:16:30,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235488993] [2022-07-14 00:16:30,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:30,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:16:30,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:16:30,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:16:30,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:16:30,341 INFO L87 Difference]: Start difference. First operand 2358 states and 3368 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:16:32,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:16:34,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:16:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:49,205 INFO L93 Difference]: Finished difference Result 7082 states and 10142 transitions. [2022-07-14 00:16:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 00:16:49,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 230 [2022-07-14 00:16:49,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:49,241 INFO L225 Difference]: With dead ends: 7082 [2022-07-14 00:16:49,241 INFO L226 Difference]: Without dead ends: 4734 [2022-07-14 00:16:49,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:16:49,258 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 771 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:49,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 2930 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 590 Invalid, 2 Unknown, 0 Unchecked, 18.3s Time] [2022-07-14 00:16:49,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2022-07-14 00:16:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 4716. [2022-07-14 00:16:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4716 states, 3365 states have (on average 1.3295690936106983) internal successors, (4474), 3415 states have internal predecessors, (4474), 1084 states have call successors, (1084), 249 states have call predecessors, (1084), 266 states have return successors, (1187), 1083 states have call predecessors, (1187), 1083 states have call successors, (1187) [2022-07-14 00:16:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4716 states to 4716 states and 6745 transitions. [2022-07-14 00:16:49,457 INFO L78 Accepts]: Start accepts. Automaton has 4716 states and 6745 transitions. Word has length 230 [2022-07-14 00:16:49,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:49,459 INFO L495 AbstractCegarLoop]: Abstraction has 4716 states and 6745 transitions. [2022-07-14 00:16:49,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:16:49,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4716 states and 6745 transitions. [2022-07-14 00:16:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-14 00:16:49,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:49,469 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-14 00:16:49,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-14 00:16:49,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:16:49,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash 792522176, now seen corresponding path program 1 times [2022-07-14 00:16:49,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:16:49,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770237403] [2022-07-14 00:16:49,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:49,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:16:49,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:16:49,701 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) [2022-07-14 00:16:49,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-14 00:16:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:52,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:16:52,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-14 00:17:02,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:02,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:17:02,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770237403] [2022-07-14 00:17:02,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770237403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:02,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:02,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:17:02,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97740262] [2022-07-14 00:17:02,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:02,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:17:02,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:17:02,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:17:02,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:17:02,535 INFO L87 Difference]: Start difference. First operand 4716 states and 6745 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:17:04,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:06,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:21,063 INFO L93 Difference]: Finished difference Result 11790 states and 16874 transitions. [2022-07-14 00:17:21,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 00:17:21,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 228 [2022-07-14 00:17:21,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:21,136 INFO L225 Difference]: With dead ends: 11790 [2022-07-14 00:17:21,137 INFO L226 Difference]: Without dead ends: 7084 [2022-07-14 00:17:21,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:17:21,170 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 769 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:21,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 2922 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 587 Invalid, 2 Unknown, 0 Unchecked, 18.0s Time] [2022-07-14 00:17:21,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7084 states. [2022-07-14 00:17:21,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7084 to 7066. [2022-07-14 00:17:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7066 states, 5039 states have (on average 1.3282397301051796) internal successors, (6693), 5117 states have internal predecessors, (6693), 1624 states have call successors, (1624), 373 states have call predecessors, (1624), 402 states have return successors, (1781), 1623 states have call predecessors, (1781), 1623 states have call successors, (1781) [2022-07-14 00:17:21,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7066 states to 7066 states and 10098 transitions. [2022-07-14 00:17:21,631 INFO L78 Accepts]: Start accepts. Automaton has 7066 states and 10098 transitions. Word has length 228 [2022-07-14 00:17:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:21,633 INFO L495 AbstractCegarLoop]: Abstraction has 7066 states and 10098 transitions. [2022-07-14 00:17:21,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:17:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 7066 states and 10098 transitions. [2022-07-14 00:17:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-14 00:17:21,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:21,646 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-14 00:17:21,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:21,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:17:21,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:21,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:21,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1627636270, now seen corresponding path program 1 times [2022-07-14 00:17:21,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:17:21,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664237124] [2022-07-14 00:17:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:21,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:17:21,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:17:21,872 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) [2022-07-14 00:17:21,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-14 00:17:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 2758 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:17:24,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-14 00:17:34,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:34,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:17:34,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664237124] [2022-07-14 00:17:34,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664237124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:34,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:34,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:17:34,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871538108] [2022-07-14 00:17:34,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:34,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:17:34,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:17:34,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:17:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:17:34,332 INFO L87 Difference]: Start difference. First operand 7066 states and 10098 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:17:36,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:38,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:54,789 INFO L93 Difference]: Finished difference Result 21202 states and 30310 transitions. [2022-07-14 00:17:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 00:17:54,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 230 [2022-07-14 00:17:54,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:55,005 INFO L225 Difference]: With dead ends: 21202 [2022-07-14 00:17:55,006 INFO L226 Difference]: Without dead ends: 14146 [2022-07-14 00:17:55,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:17:55,105 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 747 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:55,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 3243 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 605 Invalid, 2 Unknown, 0 Unchecked, 19.6s Time] [2022-07-14 00:17:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14146 states. [2022-07-14 00:17:55,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14146 to 14064. [2022-07-14 00:17:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14064 states, 10015 states have (on average 1.330204692960559) internal successors, (13322), 10219 states have internal predecessors, (13322), 3244 states have call successors, (3244), 745 states have call predecessors, (3244), 804 states have return successors, (3535), 3195 states have call predecessors, (3535), 3243 states have call successors, (3535) [2022-07-14 00:17:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14064 states to 14064 states and 20101 transitions. [2022-07-14 00:17:56,147 INFO L78 Accepts]: Start accepts. Automaton has 14064 states and 20101 transitions. Word has length 230 [2022-07-14 00:17:56,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:56,148 INFO L495 AbstractCegarLoop]: Abstraction has 14064 states and 20101 transitions. [2022-07-14 00:17:56,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:17:56,149 INFO L276 IsEmpty]: Start isEmpty. Operand 14064 states and 20101 transitions. [2022-07-14 00:17:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-14 00:17:56,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:56,168 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-14 00:17:56,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:56,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:17:56,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:56,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:56,388 INFO L85 PathProgramCache]: Analyzing trace with hash 27161038, now seen corresponding path program 1 times [2022-07-14 00:17:56,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:17:56,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101229338] [2022-07-14 00:17:56,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:56,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:17:56,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:17:56,408 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) [2022-07-14 00:17:56,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-14 00:17:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:59,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:17:59,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:18:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-14 00:18:09,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:18:09,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:18:09,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101229338] [2022-07-14 00:18:09,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101229338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:18:09,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:18:09,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:18:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301455559] [2022-07-14 00:18:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:18:09,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:18:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:18:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:18:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:18:09,774 INFO L87 Difference]: Start difference. First operand 14064 states and 20101 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:18:11,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:13,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:28,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:18:28,792 INFO L93 Difference]: Finished difference Result 32852 states and 46981 transitions. [2022-07-14 00:18:28,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 00:18:28,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 229 [2022-07-14 00:18:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:18:29,089 INFO L225 Difference]: With dead ends: 32852 [2022-07-14 00:18:29,089 INFO L226 Difference]: Without dead ends: 18798 [2022-07-14 00:18:29,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:18:29,232 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 757 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:18:29,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 3082 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 589 Invalid, 2 Unknown, 0 Unchecked, 18.1s Time] [2022-07-14 00:18:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18798 states. [2022-07-14 00:18:30,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18798 to 18756. [2022-07-14 00:18:30,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18756 states, 13355 states have (on average 1.32983901160614) internal successors, (17760), 13631 states have internal predecessors, (17760), 4324 states have call successors, (4324), 993 states have call predecessors, (4324), 1076 states have return successors, (4699), 4259 states have call predecessors, (4699), 4323 states have call successors, (4699) [2022-07-14 00:18:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18756 states to 18756 states and 26783 transitions. [2022-07-14 00:18:30,267 INFO L78 Accepts]: Start accepts. Automaton has 18756 states and 26783 transitions. Word has length 229 [2022-07-14 00:18:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:18:30,282 INFO L495 AbstractCegarLoop]: Abstraction has 18756 states and 26783 transitions. [2022-07-14 00:18:30,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:18:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 18756 states and 26783 transitions. [2022-07-14 00:18:30,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-14 00:18:30,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:18:30,303 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-14 00:18:30,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-14 00:18:30,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:18:30,523 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:18:30,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:18:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1343364159, now seen corresponding path program 1 times [2022-07-14 00:18:30,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:18:30,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047912955] [2022-07-14 00:18:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:18:30,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:18:30,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:18:30,528 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) [2022-07-14 00:18:30,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-14 00:18:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:32,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:18:32,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:18:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-14 00:18:42,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:18:42,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:18:42,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047912955] [2022-07-14 00:18:42,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047912955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:18:42,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:18:42,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:18:42,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29512660] [2022-07-14 00:18:42,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:18:42,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:18:42,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:18:42,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:18:42,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:18:42,510 INFO L87 Difference]: Start difference. First operand 18756 states and 26783 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:18:44,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:46,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []