./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.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 c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:27:59,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:27:59,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:27:59,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:27:59,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:27:59,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:27:59,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:27:59,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:27:59,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:27:59,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:27:59,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:27:59,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:27:59,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:27:59,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:27:59,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:27:59,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:27:59,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:27:59,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:27:59,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:27:59,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:27:59,547 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:27:59,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:27:59,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:27:59,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:27:59,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:27:59,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:27:59,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:27:59,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:27:59,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:27:59,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:27:59,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:27:59,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:27:59,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:27:59,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:27:59,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:27:59,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:27:59,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:27:59,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:27:59,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:27:59,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:27:59,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:27:59,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:27:59,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 12:27:59,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:27:59,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:27:59,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:27:59,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:27:59,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:27:59,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:27:59,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:27:59,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:27:59,620 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:27:59,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:27:59,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 12:27:59,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:27:59,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:27:59,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:27:59,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:27:59,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:27:59,622 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:27:59,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:27:59,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:27:59,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:27:59,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:27:59,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:27:59,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:27:59,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:27:59,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:27:59,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 12:27:59,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 12:27:59,624 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:27:59,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:27:59,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:27:59,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 [2022-07-21 12:27:59,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:27:59,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:27:59,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:27:59,913 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:27:59,913 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:27:59,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-21 12:27:59,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f26426d9c/b53019505cc841388e561a818d0dbd41/FLAGa1279f430 [2022-07-21 12:28:00,603 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:28:00,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-21 12:28:00,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f26426d9c/b53019505cc841388e561a818d0dbd41/FLAGa1279f430 [2022-07-21 12:28:00,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f26426d9c/b53019505cc841388e561a818d0dbd41 [2022-07-21 12:28:00,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:28:00,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:28:00,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:28:00,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:28:00,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:28:00,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:28:00" (1/1) ... [2022-07-21 12:28:00,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f770f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:00, skipping insertion in model container [2022-07-21 12:28:00,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:28:00" (1/1) ... [2022-07-21 12:28:00,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:28:00,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:28:02,086 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-07-21 12:28:02,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:28:02,232 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:28:02,401 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: request_id = (int )(response_que.response_id >> 4) & 255 [6760] 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:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 12:28:02,407 INFO L158 Benchmark]: Toolchain (without parser) took 1621.51ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 31.8MB in the beginning and 49.8MB in the end (delta: -18.0MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2022-07-21 12:28:02,407 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 50.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 12:28:02,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1620.04ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 31.5MB in the beginning and 49.8MB in the end (delta: -18.3MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2022-07-21 12:28:02,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 50.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1620.04ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 31.5MB in the beginning and 49.8MB in the end (delta: -18.3MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: request_id = (int )(response_que.response_id >> 4) & 255 [6760] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: request_id = (int )(response_que.response_id >> 4) & 255 [6760]: de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.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 c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:28:03,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:28:03,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:28:03,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:28:03,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:28:03,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:28:03,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:28:03,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:28:03,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:28:03,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:28:03,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:28:03,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:28:03,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:28:03,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:28:03,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:28:03,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:28:03,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:28:03,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:28:03,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:28:03,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:28:03,881 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:28:03,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:28:03,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:28:03,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:28:03,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:28:03,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:28:03,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:28:03,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:28:03,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:28:03,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:28:03,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:28:03,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:28:03,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:28:03,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:28:03,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:28:03,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:28:03,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:28:03,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:28:03,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:28:03,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:28:03,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:28:03,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:28:03,907 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 12:28:03,932 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:28:03,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:28:03,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:28:03,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:28:03,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:28:03,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:28:03,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:28:03,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:28:03,935 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:28:03,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:28:03,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:28:03,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:28:03,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:28:03,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:28:03,940 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 12:28:03,940 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 12:28:03,940 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 12:28:03,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:28:03,941 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:28:03,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:28:03,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:28:03,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:28:03,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:28:03,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:28:03,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:28:03,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:28:03,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:28:03,942 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 12:28:03,943 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 12:28:03,943 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:28:03,943 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:28:03,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:28:03,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 12:28:03,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 [2022-07-21 12:28:04,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:28:04,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:28:04,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:28:04,226 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:28:04,226 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:28:04,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-21 12:28:04,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4045bfcf1/518f0fa11b7c4f15809a99dbab720fd8/FLAG63cee538c [2022-07-21 12:28:04,881 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:28:04,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-21 12:28:04,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4045bfcf1/518f0fa11b7c4f15809a99dbab720fd8/FLAG63cee538c [2022-07-21 12:28:05,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4045bfcf1/518f0fa11b7c4f15809a99dbab720fd8 [2022-07-21 12:28:05,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:28:05,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:28:05,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:28:05,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:28:05,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:28:05,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:28:05" (1/1) ... [2022-07-21 12:28:05,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa0f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:05, skipping insertion in model container [2022-07-21 12:28:05,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:28:05" (1/1) ... [2022-07-21 12:28:05,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:28:05,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:28:06,782 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-07-21 12:28:06,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:28:06,938 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 12:28:07,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:28:07,270 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-07-21 12:28:07,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:28:07,316 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:28:07,633 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-07-21 12:28:07,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:28:07,743 INFO L208 MainTranslator]: Completed translation [2022-07-21 12:28:07,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:07 WrapperNode [2022-07-21 12:28:07,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 12:28:07,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 12:28:07,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 12:28:07,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 12:28:07,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:07" (1/1) ... [2022-07-21 12:28:07,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:07" (1/1) ... [2022-07-21 12:28:07,910 INFO L137 Inliner]: procedures = 320, calls = 2532, calls flagged for inlining = 126, calls inlined = 120, statements flattened = 5396 [2022-07-21 12:28:07,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 12:28:07,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 12:28:07,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 12:28:07,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 12:28:07,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:07" (1/1) ... [2022-07-21 12:28:07,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:07" (1/1) ... [2022-07-21 12:28:07,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:07" (1/1) ... [2022-07-21 12:28:07,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:07" (1/1) ... [2022-07-21 12:28:08,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:07" (1/1) ... [2022-07-21 12:28:08,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:07" (1/1) ... [2022-07-21 12:28:08,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:07" (1/1) ... [2022-07-21 12:28:08,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 12:28:08,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 12:28:08,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 12:28:08,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 12:28:08,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:07" (1/1) ... [2022-07-21 12:28:08,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:28:08,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:28:08,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 12:28:08,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 12:28:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 12:28:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-21 12:28:08,244 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-21 12:28:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 12:28:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 12:28:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 12:28:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 12:28:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 12:28:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-07-21 12:28:08,245 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-07-21 12:28:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 12:28:08,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 12:28:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 12:28:08,245 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 12:28:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-07-21 12:28:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-07-21 12:28:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 12:28:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 12:28:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure twa_get_request_id [2022-07-21 12:28:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_get_request_id [2022-07-21 12:28:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure twa_fill_sense [2022-07-21 12:28:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_fill_sense [2022-07-21 12:28:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2022-07-21 12:28:08,247 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2022-07-21 12:28:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-07-21 12:28:08,247 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-07-21 12:28:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_remove_host [2022-07-21 12:28:08,247 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_remove_host [2022-07-21 12:28:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 12:28:08,247 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 12:28:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 12:28:08,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 12:28:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_4 [2022-07-21 12:28:08,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_4 [2022-07-21 12:28:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-21 12:28:08,248 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-21 12:28:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 12:28:08,248 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 12:28:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-07-21 12:28:08,249 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-07-21 12:28:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure twa_resume [2022-07-21 12:28:08,249 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_resume [2022-07-21 12:28:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 12:28:08,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 12:28:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sglist [2022-07-21 12:28:08,249 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sglist [2022-07-21 12:28:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-21 12:28:08,250 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-21 12:28:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 12:28:08,250 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 12:28:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure twa_remove [2022-07-21 12:28:08,250 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_remove [2022-07-21 12:28:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 12:28:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure twa_reset_sequence [2022-07-21 12:28:08,251 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_reset_sequence [2022-07-21 12:28:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-07-21 12:28:08,251 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-07-21 12:28:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 12:28:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure twa_get_param [2022-07-21 12:28:08,251 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_get_param [2022-07-21 12:28:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-07-21 12:28:08,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-07-21 12:28:08,262 INFO L130 BoogieDeclarations]: Found specification of procedure twa_string_lookup [2022-07-21 12:28:08,263 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_string_lookup [2022-07-21 12:28:08,263 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 12:28:08,263 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 12:28:08,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 12:28:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 12:28:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 12:28:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 12:28:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 12:28:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-07-21 12:28:08,264 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-07-21 12:28:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 12:28:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-21 12:28:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 12:28:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 12:28:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure __twa_shutdown [2022-07-21 12:28:08,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __twa_shutdown [2022-07-21 12:28:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_twa_chrdev_mutex [2022-07-21 12:28:08,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_twa_chrdev_mutex [2022-07-21 12:28:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 12:28:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-07-21 12:28:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-07-21 12:28:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-07-21 12:28:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-07-21 12:28:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure twa_shutdown [2022-07-21 12:28:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_shutdown [2022-07-21 12:28:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure twa_post_command_packet [2022-07-21 12:28:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_post_command_packet [2022-07-21 12:28:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-21 12:28:08,268 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-21 12:28:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure twa_free_request_id [2022-07-21 12:28:08,268 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_free_request_id [2022-07-21 12:28:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-07-21 12:28:08,268 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-07-21 12:28:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_dma_unmap [2022-07-21 12:28:08,268 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_dma_unmap [2022-07-21 12:28:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure twa_decode_bits [2022-07-21 12:28:08,269 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_decode_bits [2022-07-21 12:28:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-21 12:28:08,269 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-21 12:28:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-07-21 12:28:08,269 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-07-21 12:28:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 12:28:08,269 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 12:28:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure pci_try_set_mwi [2022-07-21 12:28:08,270 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_try_set_mwi [2022-07-21 12:28:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 12:28:08,270 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 12:28:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-07-21 12:28:08,271 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-07-21 12:28:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure twa_initconnection [2022-07-21 12:28:08,273 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_initconnection [2022-07-21 12:28:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-07-21 12:28:08,273 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-07-21 12:28:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-21 12:28:08,274 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-21 12:28:08,274 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-07-21 12:28:08,274 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-07-21 12:28:08,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 12:28:08,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 12:28:08,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 12:28:08,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 12:28:08,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 12:28:08,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 12:28:08,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-21 12:28:08,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-21 12:28:08,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ioctl_lock_of_TAG_TW_Device_Extension [2022-07-21 12:28:08,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ioctl_lock_of_TAG_TW_Device_Extension [2022-07-21 12:28:08,279 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_msi_exact [2022-07-21 12:28:08,280 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_msi_exact [2022-07-21 12:28:08,280 INFO L130 BoogieDeclarations]: Found specification of procedure twa_aen_queue_event [2022-07-21 12:28:08,280 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_aen_queue_event [2022-07-21 12:28:08,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 12:28:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure twa_interrupt [2022-07-21 12:28:08,281 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_interrupt [2022-07-21 12:28:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-21 12:28:08,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-21 12:28:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-21 12:28:08,281 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-21 12:28:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_count [2022-07-21 12:28:08,281 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_count [2022-07-21 12:28:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 12:28:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-21 12:28:08,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-21 12:28:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-07-21 12:28:08,282 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-07-21 12:28:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 12:28:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 12:28:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 12:28:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-21 12:28:08,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-21 12:28:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 12:28:08,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 12:28:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 12:28:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-07-21 12:28:08,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-07-21 12:28:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure twa_allocate_memory [2022-07-21 12:28:08,283 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_allocate_memory [2022-07-21 12:28:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-07-21 12:28:08,284 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-07-21 12:28:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure twa_poll_response [2022-07-21 12:28:08,284 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_poll_response [2022-07-21 12:28:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_3 [2022-07-21 12:28:08,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_3 [2022-07-21 12:28:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ioctl_lock_of_TAG_TW_Device_Extension [2022-07-21 12:28:08,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ioctl_lock_of_TAG_TW_Device_Extension [2022-07-21 12:28:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure twa_scsiop_execute_scsi [2022-07-21 12:28:08,284 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_scsiop_execute_scsi [2022-07-21 12:28:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-07-21 12:28:08,285 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-07-21 12:28:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure twa_reset_device_extension [2022-07-21 12:28:08,285 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_reset_device_extension [2022-07-21 12:28:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure twa_free_device_extension [2022-07-21 12:28:08,285 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_free_device_extension [2022-07-21 12:28:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-07-21 12:28:08,285 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-07-21 12:28:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_twa_chrdev_mutex [2022-07-21 12:28:08,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_twa_chrdev_mutex [2022-07-21 12:28:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure twa_check_bits [2022-07-21 12:28:08,286 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_check_bits [2022-07-21 12:28:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-21 12:28:08,286 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-21 12:28:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-07-21 12:28:08,287 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-07-21 12:28:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-07-21 12:28:08,288 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-07-21 12:28:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-07-21 12:28:08,288 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-07-21 12:28:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 12:28:08,288 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 12:28:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 12:28:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure twa_aen_read_queue [2022-07-21 12:28:08,289 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_aen_read_queue [2022-07-21 12:28:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 12:28:08,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 12:28:08,885 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 12:28:08,887 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 12:28:09,052 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 12:28:56,344 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 12:28:56,363 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 12:28:56,363 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 12:28:56,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:28:56 BoogieIcfgContainer [2022-07-21 12:28:56,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 12:28:56,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 12:28:56,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 12:28:56,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 12:28:56,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:28:05" (1/3) ... [2022-07-21 12:28:56,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6b92ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:28:56, skipping insertion in model container [2022-07-21 12:28:56,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:28:07" (2/3) ... [2022-07-21 12:28:56,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6b92ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:28:56, skipping insertion in model container [2022-07-21 12:28:56,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:28:56" (3/3) ... [2022-07-21 12:28:56,376 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-21 12:28:56,386 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 12:28:56,386 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 12:28:56,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 12:28:56,453 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@2b70700b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@38e16013 [2022-07-21 12:28:56,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 12:28:56,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 1579 states, 1157 states have (on average 1.3785652549697494) internal successors, (1595), 1194 states have internal predecessors, (1595), 338 states have call successors, (338), 83 states have call predecessors, (338), 82 states have return successors, (328), 327 states have call predecessors, (328), 328 states have call successors, (328) [2022-07-21 12:28:56,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-21 12:28:56,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:28:56,484 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:28:56,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:28:56,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:28:56,489 INFO L85 PathProgramCache]: Analyzing trace with hash -650807549, now seen corresponding path program 1 times [2022-07-21 12:28:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:28:56,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553801745] [2022-07-21 12:28:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:28:56,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:28:56,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:28:56,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:28:56,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 12:28:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:28:59,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 12:28:59,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:28:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-21 12:28:59,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:28:59,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:28:59,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553801745] [2022-07-21 12:28:59,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553801745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:28:59,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:28:59,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:28:59,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028931951] [2022-07-21 12:28:59,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:28:59,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 12:28:59,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:28:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 12:28:59,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 12:28:59,155 INFO L87 Difference]: Start difference. First operand has 1579 states, 1157 states have (on average 1.3785652549697494) internal successors, (1595), 1194 states have internal predecessors, (1595), 338 states have call successors, (338), 83 states have call predecessors, (338), 82 states have return successors, (328), 327 states have call predecessors, (328), 328 states have call successors, (328) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 12:28:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:28:59,319 INFO L93 Difference]: Finished difference Result 3153 states and 4571 transitions. [2022-07-21 12:28:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 12:28:59,321 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 207 [2022-07-21 12:28:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:28:59,350 INFO L225 Difference]: With dead ends: 3153 [2022-07-21 12:28:59,351 INFO L226 Difference]: Without dead ends: 1562 [2022-07-21 12:28:59,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 12:28:59,371 INFO L413 NwaCegarLoop]: 2248 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:28:59,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:28:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-07-21 12:28:59,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1562. [2022-07-21 12:28:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1152 states have (on average 1.3689236111111112) internal successors, (1577), 1177 states have internal predecessors, (1577), 328 states have call successors, (328), 82 states have call predecessors, (328), 81 states have return successors, (318), 317 states have call predecessors, (318), 318 states have call successors, (318) [2022-07-21 12:28:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2223 transitions. [2022-07-21 12:28:59,551 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2223 transitions. Word has length 207 [2022-07-21 12:28:59,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:28:59,551 INFO L495 AbstractCegarLoop]: Abstraction has 1562 states and 2223 transitions. [2022-07-21 12:28:59,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 12:28:59,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2223 transitions. [2022-07-21 12:28:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-21 12:28:59,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:28:59,563 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:28:59,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 12:28:59,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:28:59,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:28:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:28:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1985613877, now seen corresponding path program 1 times [2022-07-21 12:28:59,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:28:59,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757359777] [2022-07-21 12:28:59,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:28:59,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:28:59,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:28:59,782 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:28:59,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 12:29:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:29:03,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 12:29:03,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:29:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-21 12:29:03,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:29:03,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:29:03,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757359777] [2022-07-21 12:29:03,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757359777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:29:03,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:29:03,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:29:03,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419680924] [2022-07-21 12:29:03,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:29:03,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:29:03,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:29:03,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:29:03,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:29:03,552 INFO L87 Difference]: Start difference. First operand 1562 states and 2223 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-21 12:29:04,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:29:04,245 INFO L93 Difference]: Finished difference Result 3112 states and 4492 transitions. [2022-07-21 12:29:04,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 12:29:04,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 207 [2022-07-21 12:29:04,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:29:04,258 INFO L225 Difference]: With dead ends: 3112 [2022-07-21 12:29:04,259 INFO L226 Difference]: Without dead ends: 1565 [2022-07-21 12:29:04,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:29:04,268 INFO L413 NwaCegarLoop]: 2212 mSDtfsCounter, 6 mSDsluCounter, 8812 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11024 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:29:04,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11024 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 12:29:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-07-21 12:29:04,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2022-07-21 12:29:04,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1154 states have (on average 1.3691507798960139) internal successors, (1580), 1180 states have internal predecessors, (1580), 328 states have call successors, (328), 82 states have call predecessors, (328), 82 states have return successors, (319), 317 states have call predecessors, (319), 318 states have call successors, (319) [2022-07-21 12:29:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2227 transitions. [2022-07-21 12:29:04,367 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2227 transitions. Word has length 207 [2022-07-21 12:29:04,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:29:04,368 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 2227 transitions. [2022-07-21 12:29:04,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-21 12:29:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2227 transitions. [2022-07-21 12:29:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-21 12:29:04,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:29:04,370 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:29:04,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 12:29:04,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:29:04,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:29:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:29:04,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1158805767, now seen corresponding path program 1 times [2022-07-21 12:29:04,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:29:04,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304763975] [2022-07-21 12:29:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:29:04,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:29:04,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:29:04,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:29:04,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 12:29:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:29:08,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 12:29:08,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:29:08,298 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-07-21 12:29:08,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:29:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-07-21 12:29:09,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:29:09,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304763975] [2022-07-21 12:29:09,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304763975] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:29:09,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:29:09,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-21 12:29:09,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436102702] [2022-07-21 12:29:09,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:29:09,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 12:29:09,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:29:09,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 12:29:09,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-21 12:29:09,111 INFO L87 Difference]: Start difference. First operand 1565 states and 2227 transitions. Second operand has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-21 12:29:10,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:29:10,447 INFO L93 Difference]: Finished difference Result 3123 states and 4506 transitions. [2022-07-21 12:29:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 12:29:10,448 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 214 [2022-07-21 12:29:10,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:29:10,458 INFO L225 Difference]: With dead ends: 3123 [2022-07-21 12:29:10,458 INFO L226 Difference]: Without dead ends: 1573 [2022-07-21 12:29:10,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-21 12:29:10,466 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 10 mSDsluCounter, 15422 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17636 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:29:10,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 17636 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 12:29:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2022-07-21 12:29:10,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1571. [2022-07-21 12:29:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1158 states have (on average 1.3687392055267702) internal successors, (1585), 1184 states have internal predecessors, (1585), 329 states have call successors, (329), 83 states have call predecessors, (329), 83 states have return successors, (320), 318 states have call predecessors, (320), 319 states have call successors, (320) [2022-07-21 12:29:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2234 transitions. [2022-07-21 12:29:10,519 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2234 transitions. Word has length 214 [2022-07-21 12:29:10,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:29:10,521 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 2234 transitions. [2022-07-21 12:29:10,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-21 12:29:10,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2234 transitions. [2022-07-21 12:29:10,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-21 12:29:10,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:29:10,525 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:29:10,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 12:29:10,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:29:10,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:29:10,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:29:10,740 INFO L85 PathProgramCache]: Analyzing trace with hash -237312011, now seen corresponding path program 2 times [2022-07-21 12:29:10,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:29:10,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804953154] [2022-07-21 12:29:10,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:29:10,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:29:10,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:29:10,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:29:10,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 12:29:12,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:29:12,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:29:13,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:29:13,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:29:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-21 12:29:13,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:29:13,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:29:13,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804953154] [2022-07-21 12:29:13,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804953154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:29:13,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:29:13,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:29:13,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112109068] [2022-07-21 12:29:13,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:29:13,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:29:13,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:29:13,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:29:13,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:29:13,121 INFO L87 Difference]: Start difference. First operand 1571 states and 2234 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 12:29:13,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:29:13,684 INFO L93 Difference]: Finished difference Result 4542 states and 6480 transitions. [2022-07-21 12:29:13,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:29:13,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 221 [2022-07-21 12:29:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:29:13,705 INFO L225 Difference]: With dead ends: 4542 [2022-07-21 12:29:13,705 INFO L226 Difference]: Without dead ends: 3012 [2022-07-21 12:29:13,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:29:13,714 INFO L413 NwaCegarLoop]: 2688 mSDtfsCounter, 2143 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 4794 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:29:13,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 4794 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 12:29:13,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2022-07-21 12:29:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2972. [2022-07-21 12:29:13,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2208 states have (on average 1.375) internal successors, (3036), 2251 states have internal predecessors, (3036), 603 states have call successors, (603), 160 states have call predecessors, (603), 160 states have return successors, (614), 586 states have call predecessors, (614), 593 states have call successors, (614) [2022-07-21 12:29:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 4253 transitions. [2022-07-21 12:29:13,804 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 4253 transitions. Word has length 221 [2022-07-21 12:29:13,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:29:13,806 INFO L495 AbstractCegarLoop]: Abstraction has 2972 states and 4253 transitions. [2022-07-21 12:29:13,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 12:29:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 4253 transitions. [2022-07-21 12:29:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-21 12:29:13,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:29:13,809 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:29:13,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 12:29:14,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:29:14,019 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:29:14,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:29:14,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2094996992, now seen corresponding path program 1 times [2022-07-21 12:29:14,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:29:14,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070435463] [2022-07-21 12:29:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:29:14,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:29:14,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:29:14,024 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:29:14,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 12:29:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:29:17,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 3504 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 12:29:17,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:29:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 102 proven. 3 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2022-07-21 12:29:17,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:29:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2022-07-21 12:29:18,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:29:18,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070435463] [2022-07-21 12:29:18,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070435463] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:29:18,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:29:18,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-21 12:29:18,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297281005] [2022-07-21 12:29:18,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:29:18,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 12:29:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:29:18,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 12:29:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-21 12:29:18,511 INFO L87 Difference]: Start difference. First operand 2972 states and 4253 transitions. Second operand has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-21 12:29:19,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:29:19,874 INFO L93 Difference]: Finished difference Result 5942 states and 8636 transitions. [2022-07-21 12:29:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 12:29:19,876 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 221 [2022-07-21 12:29:19,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:29:19,897 INFO L225 Difference]: With dead ends: 5942 [2022-07-21 12:29:19,897 INFO L226 Difference]: Without dead ends: 2982 [2022-07-21 12:29:19,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-07-21 12:29:19,911 INFO L413 NwaCegarLoop]: 2215 mSDtfsCounter, 18 mSDsluCounter, 15428 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 17643 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:29:19,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 17643 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 12:29:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2022-07-21 12:29:19,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 2974. [2022-07-21 12:29:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2210 states have (on average 1.3755656108597285) internal successors, (3040), 2253 states have internal predecessors, (3040), 603 states have call successors, (603), 160 states have call predecessors, (603), 160 states have return successors, (614), 586 states have call predecessors, (614), 593 states have call successors, (614) [2022-07-21 12:29:19,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4257 transitions. [2022-07-21 12:29:19,993 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4257 transitions. Word has length 221 [2022-07-21 12:29:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:29:19,993 INFO L495 AbstractCegarLoop]: Abstraction has 2974 states and 4257 transitions. [2022-07-21 12:29:19,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-21 12:29:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4257 transitions. [2022-07-21 12:29:19,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-21 12:29:19,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:29:19,996 INFO L195 NwaCegarLoop]: trace histogram [21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:29:20,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 12:29:20,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:29:20,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:29:20,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:29:20,212 INFO L85 PathProgramCache]: Analyzing trace with hash 977688914, now seen corresponding path program 2 times [2022-07-21 12:29:20,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:29:20,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453385826] [2022-07-21 12:29:20,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:29:20,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:29:20,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:29:20,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:29:20,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 12:29:22,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:29:22,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:29:22,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:29:22,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:29:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-07-21 12:29:22,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:29:22,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:29:22,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453385826] [2022-07-21 12:29:22,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453385826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:29:22,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:29:22,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:29:22,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778202251] [2022-07-21 12:29:22,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:29:22,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:29:22,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:29:22,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:29:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:29:22,596 INFO L87 Difference]: Start difference. First operand 2974 states and 4257 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 12:29:23,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:29:23,054 INFO L93 Difference]: Finished difference Result 8812 states and 12625 transitions. [2022-07-21 12:29:23,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:29:23,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 228 [2022-07-21 12:29:23,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:29:23,084 INFO L225 Difference]: With dead ends: 8812 [2022-07-21 12:29:23,084 INFO L226 Difference]: Without dead ends: 5879 [2022-07-21 12:29:23,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:29:23,099 INFO L413 NwaCegarLoop]: 2540 mSDtfsCounter, 2143 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:29:23,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 4744 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:29:23,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2022-07-21 12:29:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5872. [2022-07-21 12:29:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 4375 states have (on average 1.3766857142857143) internal successors, (6023), 4452 states have internal predecessors, (6023), 1178 states have call successors, (1178), 317 states have call predecessors, (1178), 318 states have return successors, (1210), 1154 states have call predecessors, (1210), 1168 states have call successors, (1210) [2022-07-21 12:29:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 8411 transitions. [2022-07-21 12:29:23,303 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 8411 transitions. Word has length 228 [2022-07-21 12:29:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:29:23,306 INFO L495 AbstractCegarLoop]: Abstraction has 5872 states and 8411 transitions. [2022-07-21 12:29:23,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 12:29:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 8411 transitions. [2022-07-21 12:29:23,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-21 12:29:23,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:29:23,310 INFO L195 NwaCegarLoop]: trace histogram [21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:29:23,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 12:29:23,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:29:23,528 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:29:23,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:29:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1466196661, now seen corresponding path program 1 times [2022-07-21 12:29:23,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:29:23,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441553657] [2022-07-21 12:29:23,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:29:23,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:29:23,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:29:23,532 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:29:23,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 12:29:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:29:27,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 3686 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 12:29:27,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:29:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 144 proven. 6 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2022-07-21 12:29:27,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:29:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2022-07-21 12:29:29,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:29:29,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441553657] [2022-07-21 12:29:29,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441553657] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:29:29,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:29:29,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-21 12:29:29,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032413082] [2022-07-21 12:29:29,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:29:29,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 12:29:29,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:29:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 12:29:29,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-21 12:29:29,370 INFO L87 Difference]: Start difference. First operand 5872 states and 8411 transitions. Second operand has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 15 states have internal predecessors, (79), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-21 12:29:31,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:29:31,331 INFO L93 Difference]: Finished difference Result 11760 states and 17103 transitions. [2022-07-21 12:29:31,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 12:29:31,332 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 15 states have internal predecessors, (79), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 237 [2022-07-21 12:29:31,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:29:31,360 INFO L225 Difference]: With dead ends: 11760 [2022-07-21 12:29:31,360 INFO L226 Difference]: Without dead ends: 5900 [2022-07-21 12:29:31,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-07-21 12:29:31,382 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 29 mSDsluCounter, 17626 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 19842 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:29:31,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 19842 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 12:29:31,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2022-07-21 12:29:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 5876. [2022-07-21 12:29:31,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 4379 states have (on average 1.3772550810687372) internal successors, (6031), 4456 states have internal predecessors, (6031), 1178 states have call successors, (1178), 317 states have call predecessors, (1178), 318 states have return successors, (1210), 1154 states have call predecessors, (1210), 1168 states have call successors, (1210) [2022-07-21 12:29:31,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 8419 transitions. [2022-07-21 12:29:31,538 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 8419 transitions. Word has length 237 [2022-07-21 12:29:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:29:31,539 INFO L495 AbstractCegarLoop]: Abstraction has 5876 states and 8419 transitions. [2022-07-21 12:29:31,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 15 states have internal predecessors, (79), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-21 12:29:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 8419 transitions. [2022-07-21 12:29:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-07-21 12:29:31,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:29:31,542 INFO L195 NwaCegarLoop]: trace histogram [28, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:29:31,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 12:29:31,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:29:31,760 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:29:31,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:29:31,760 INFO L85 PathProgramCache]: Analyzing trace with hash -558060025, now seen corresponding path program 2 times [2022-07-21 12:29:31,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:29:31,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342410918] [2022-07-21 12:29:31,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:29:31,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:29:31,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:29:31,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:29:31,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 12:29:34,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:29:34,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:29:34,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:29:34,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:29:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2022-07-21 12:29:34,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:29:34,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:29:34,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342410918] [2022-07-21 12:29:34,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342410918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:29:34,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:29:34,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:29:34,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551535761] [2022-07-21 12:29:34,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:29:34,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:29:34,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:29:34,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:29:34,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:29:34,418 INFO L87 Difference]: Start difference. First operand 5876 states and 8419 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 12:29:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:29:35,042 INFO L93 Difference]: Finished difference Result 16732 states and 24039 transitions. [2022-07-21 12:29:35,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:29:35,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 244 [2022-07-21 12:29:35,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:29:35,104 INFO L225 Difference]: With dead ends: 16732 [2022-07-21 12:29:35,104 INFO L226 Difference]: Without dead ends: 10897 [2022-07-21 12:29:35,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:29:35,129 INFO L413 NwaCegarLoop]: 2524 mSDtfsCounter, 1956 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 4680 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:29:35,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 4680 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:29:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10897 states. [2022-07-21 12:29:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10897 to 10862. [2022-07-21 12:29:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10862 states, 8077 states have (on average 1.3771202179026867) internal successors, (11123), 8224 states have internal predecessors, (11123), 2180 states have call successors, (2180), 599 states have call predecessors, (2180), 604 states have return successors, (2330), 2142 states have call predecessors, (2330), 2170 states have call successors, (2330) [2022-07-21 12:29:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10862 states to 10862 states and 15633 transitions. [2022-07-21 12:29:35,485 INFO L78 Accepts]: Start accepts. Automaton has 10862 states and 15633 transitions. Word has length 244 [2022-07-21 12:29:35,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:29:35,485 INFO L495 AbstractCegarLoop]: Abstraction has 10862 states and 15633 transitions. [2022-07-21 12:29:35,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 12:29:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 10862 states and 15633 transitions. [2022-07-21 12:29:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-21 12:29:35,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:29:35,488 INFO L195 NwaCegarLoop]: trace histogram [28, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:29:35,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 12:29:35,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:29:35,707 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:29:35,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:29:35,708 INFO L85 PathProgramCache]: Analyzing trace with hash 258270171, now seen corresponding path program 1 times [2022-07-21 12:29:35,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:29:35,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146476080] [2022-07-21 12:29:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:29:35,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:29:35,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:29:35,712 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:29:35,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 12:29:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:29:40,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 3731 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 12:29:40,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:29:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 459 proven. 10 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2022-07-21 12:29:40,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:29:41,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 31 proven. 165 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2022-07-21 12:29:41,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:29:41,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146476080] [2022-07-21 12:29:41,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146476080] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:29:41,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:29:41,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-21 12:29:41,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056279973] [2022-07-21 12:29:41,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:29:41,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 12:29:41,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:29:41,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 12:29:41,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-21 12:29:41,966 INFO L87 Difference]: Start difference. First operand 10862 states and 15633 transitions. Second operand has 17 states, 15 states have (on average 5.8) internal successors, (87), 17 states have internal predecessors, (87), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 12:29:43,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:29:43,951 INFO L93 Difference]: Finished difference Result 21777 states and 31928 transitions. [2022-07-21 12:29:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 12:29:43,952 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.8) internal successors, (87), 17 states have internal predecessors, (87), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 255 [2022-07-21 12:29:43,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:29:43,989 INFO L225 Difference]: With dead ends: 21777 [2022-07-21 12:29:43,990 INFO L226 Difference]: Without dead ends: 10940 [2022-07-21 12:29:44,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-07-21 12:29:44,016 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 62 mSDsluCounter, 19832 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 22048 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:29:44,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 22048 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 12:29:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10940 states. [2022-07-21 12:29:44,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10940 to 10878. [2022-07-21 12:29:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10878 states, 8092 states have (on average 1.3779041028175976) internal successors, (11150), 8239 states have internal predecessors, (11150), 2180 states have call successors, (2180), 600 states have call predecessors, (2180), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-21 12:29:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10878 states to 10878 states and 15661 transitions. [2022-07-21 12:29:44,325 INFO L78 Accepts]: Start accepts. Automaton has 10878 states and 15661 transitions. Word has length 255 [2022-07-21 12:29:44,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:29:44,326 INFO L495 AbstractCegarLoop]: Abstraction has 10878 states and 15661 transitions. [2022-07-21 12:29:44,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.8) internal successors, (87), 17 states have internal predecessors, (87), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 12:29:44,326 INFO L276 IsEmpty]: Start isEmpty. Operand 10878 states and 15661 transitions. [2022-07-21 12:29:44,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-21 12:29:44,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:29:44,329 INFO L195 NwaCegarLoop]: trace histogram [31, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:29:44,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 12:29:44,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:29:44,543 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:29:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:29:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1135204157, now seen corresponding path program 2 times [2022-07-21 12:29:44,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:29:44,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878525970] [2022-07-21 12:29:44,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:29:44,547 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:29:44,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:29:44,548 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:29:44,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 12:29:46,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:29:46,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:29:46,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:29:46,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:29:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2022-07-21 12:29:46,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:29:46,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:29:46,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878525970] [2022-07-21 12:29:46,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878525970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:29:46,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:29:46,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:29:46,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121865045] [2022-07-21 12:29:46,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:29:46,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:29:46,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:29:46,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:29:46,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:29:46,805 INFO L87 Difference]: Start difference. First operand 10878 states and 15661 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:29:47,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:29:47,255 INFO L93 Difference]: Finished difference Result 10904 states and 15693 transitions. [2022-07-21 12:29:47,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:29:47,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 258 [2022-07-21 12:29:47,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:29:47,302 INFO L225 Difference]: With dead ends: 10904 [2022-07-21 12:29:47,303 INFO L226 Difference]: Without dead ends: 10891 [2022-07-21 12:29:47,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:29:47,312 INFO L413 NwaCegarLoop]: 2238 mSDtfsCounter, 2218 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:29:47,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2218 Valid, 2254 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:29:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10891 states. [2022-07-21 12:29:47,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10891 to 10878. [2022-07-21 12:29:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10878 states, 8092 states have (on average 1.3774097874443896) internal successors, (11146), 8239 states have internal predecessors, (11146), 2180 states have call successors, (2180), 600 states have call predecessors, (2180), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-21 12:29:47,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10878 states to 10878 states and 15657 transitions. [2022-07-21 12:29:47,672 INFO L78 Accepts]: Start accepts. Automaton has 10878 states and 15657 transitions. Word has length 258 [2022-07-21 12:29:47,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:29:47,673 INFO L495 AbstractCegarLoop]: Abstraction has 10878 states and 15657 transitions. [2022-07-21 12:29:47,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:29:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand 10878 states and 15657 transitions. [2022-07-21 12:29:47,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-21 12:29:47,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:29:47,677 INFO L195 NwaCegarLoop]: trace histogram [31, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:29:47,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 12:29:47,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:29:47,903 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:29:47,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:29:47,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1077945855, now seen corresponding path program 1 times [2022-07-21 12:29:47,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:29:47,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603740756] [2022-07-21 12:29:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:29:47,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:29:47,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:29:47,908 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:29:47,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 12:29:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:29:52,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 3762 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 12:29:52,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:29:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 511 proven. 15 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2022-07-21 12:29:52,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:29:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 36 proven. 207 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2022-07-21 12:29:54,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:29:54,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603740756] [2022-07-21 12:29:54,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603740756] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:29:54,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:29:54,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-21 12:29:54,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949104299] [2022-07-21 12:29:54,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:29:54,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 12:29:54,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:29:54,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 12:29:54,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-07-21 12:29:54,318 INFO L87 Difference]: Start difference. First operand 10878 states and 15657 transitions. Second operand has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 12:29:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:29:56,739 INFO L93 Difference]: Finished difference Result 21815 states and 31971 transitions. [2022-07-21 12:29:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 12:29:56,740 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 258 [2022-07-21 12:29:56,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:29:56,777 INFO L225 Difference]: With dead ends: 21815 [2022-07-21 12:29:56,778 INFO L226 Difference]: Without dead ends: 10964 [2022-07-21 12:29:56,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-07-21 12:29:56,809 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 98 mSDsluCounter, 22035 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 24251 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 12:29:56,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 24251 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 12:29:56,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10964 states. [2022-07-21 12:29:57,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10964 to 10886. [2022-07-21 12:29:57,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10886 states, 8100 states have (on average 1.3780246913580247) internal successors, (11162), 8247 states have internal predecessors, (11162), 2180 states have call successors, (2180), 600 states have call predecessors, (2180), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-21 12:29:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10886 states to 10886 states and 15673 transitions. [2022-07-21 12:29:57,188 INFO L78 Accepts]: Start accepts. Automaton has 10886 states and 15673 transitions. Word has length 258 [2022-07-21 12:29:57,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:29:57,189 INFO L495 AbstractCegarLoop]: Abstraction has 10886 states and 15673 transitions. [2022-07-21 12:29:57,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 12:29:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 10886 states and 15673 transitions. [2022-07-21 12:29:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-21 12:29:57,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:29:57,192 INFO L195 NwaCegarLoop]: trace histogram [34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:29:57,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 12:29:57,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:29:57,393 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:29:57,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:29:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1841410329, now seen corresponding path program 2 times [2022-07-21 12:29:57,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:29:57,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116113105] [2022-07-21 12:29:57,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:29:57,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:29:57,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:29:57,408 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:29:57,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 12:29:59,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:29:59,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:29:59,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:29:59,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:30:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1380 trivial. 0 not checked. [2022-07-21 12:30:01,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:30:01,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:30:01,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116113105] [2022-07-21 12:30:01,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116113105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:30:01,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:30:01,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:30:01,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941169374] [2022-07-21 12:30:01,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:30:01,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:30:01,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:30:01,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:30:01,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:30:01,396 INFO L87 Difference]: Start difference. First operand 10886 states and 15673 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:30:01,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:30:01,571 INFO L93 Difference]: Finished difference Result 10888 states and 15674 transitions. [2022-07-21 12:30:01,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:30:01,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 261 [2022-07-21 12:30:01,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:30:01,607 INFO L225 Difference]: With dead ends: 10888 [2022-07-21 12:30:01,607 INFO L226 Difference]: Without dead ends: 10885 [2022-07-21 12:30:01,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:30:01,615 INFO L413 NwaCegarLoop]: 2220 mSDtfsCounter, 2135 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:30:01,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2135 Valid, 2220 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:30:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10885 states. [2022-07-21 12:30:01,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10885 to 10885. [2022-07-21 12:30:01,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10885 states, 8100 states have (on average 1.3779012345679011) internal successors, (11161), 8246 states have internal predecessors, (11161), 2179 states have call successors, (2179), 600 states have call predecessors, (2179), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-21 12:30:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10885 states to 10885 states and 15671 transitions. [2022-07-21 12:30:01,943 INFO L78 Accepts]: Start accepts. Automaton has 10885 states and 15671 transitions. Word has length 261 [2022-07-21 12:30:01,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:30:01,944 INFO L495 AbstractCegarLoop]: Abstraction has 10885 states and 15671 transitions. [2022-07-21 12:30:01,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:30:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 10885 states and 15671 transitions. [2022-07-21 12:30:01,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-21 12:30:01,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:30:01,946 INFO L195 NwaCegarLoop]: trace histogram [34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:30:02,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 12:30:02,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:30:02,151 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:30:02,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:30:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1248693024, now seen corresponding path program 1 times [2022-07-21 12:30:02,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:30:02,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120636305] [2022-07-21 12:30:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:30:02,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:30:02,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:30:02,155 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:30:02,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 12:30:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:30:06,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 3796 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 12:30:06,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:30:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 567 proven. 21 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2022-07-21 12:30:07,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:30:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 41 proven. 254 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2022-07-21 12:30:09,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:30:09,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120636305] [2022-07-21 12:30:09,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120636305] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:30:09,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:30:09,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-21 12:30:09,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836390162] [2022-07-21 12:30:09,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:30:09,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 12:30:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:30:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 12:30:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-21 12:30:09,750 INFO L87 Difference]: Start difference. First operand 10885 states and 15671 transitions. Second operand has 21 states, 19 states have (on average 4.842105263157895) internal successors, (92), 21 states have internal predecessors, (92), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 12:30:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:30:13,202 INFO L93 Difference]: Finished difference Result 21845 states and 32015 transitions. [2022-07-21 12:30:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 12:30:13,203 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.842105263157895) internal successors, (92), 21 states have internal predecessors, (92), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 262 [2022-07-21 12:30:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:30:13,259 INFO L225 Difference]: With dead ends: 21845 [2022-07-21 12:30:13,259 INFO L226 Difference]: Without dead ends: 10987 [2022-07-21 12:30:13,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2022-07-21 12:30:13,404 INFO L413 NwaCegarLoop]: 2215 mSDtfsCounter, 79 mSDsluCounter, 33038 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 35253 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:30:13,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 35253 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 12:30:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2022-07-21 12:30:13,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 10893. [2022-07-21 12:30:13,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10893 states, 8108 states have (on average 1.3785150468672915) internal successors, (11177), 8254 states have internal predecessors, (11177), 2179 states have call successors, (2179), 600 states have call predecessors, (2179), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-21 12:30:13,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10893 states to 10893 states and 15687 transitions. [2022-07-21 12:30:13,735 INFO L78 Accepts]: Start accepts. Automaton has 10893 states and 15687 transitions. Word has length 262 [2022-07-21 12:30:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:30:13,735 INFO L495 AbstractCegarLoop]: Abstraction has 10893 states and 15687 transitions. [2022-07-21 12:30:13,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.842105263157895) internal successors, (92), 21 states have internal predecessors, (92), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 12:30:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 10893 states and 15687 transitions. [2022-07-21 12:30:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-21 12:30:13,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:30:13,738 INFO L195 NwaCegarLoop]: trace histogram [37, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:30:13,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 12:30:13,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:30:13,951 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:30:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:30:13,952 INFO L85 PathProgramCache]: Analyzing trace with hash -436266952, now seen corresponding path program 2 times [2022-07-21 12:30:13,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:30:13,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792472568] [2022-07-21 12:30:13,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:30:13,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:30:13,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:30:13,956 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:30:13,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 12:30:16,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:30:16,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:30:16,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:30:16,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:30:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-07-21 12:30:18,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:30:18,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:30:18,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792472568] [2022-07-21 12:30:18,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792472568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:30:18,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:30:18,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:30:18,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955179690] [2022-07-21 12:30:18,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:30:18,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:30:18,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:30:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:30:18,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:30:18,188 INFO L87 Difference]: Start difference. First operand 10893 states and 15687 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:30:18,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:30:18,664 INFO L93 Difference]: Finished difference Result 32304 states and 46568 transitions. [2022-07-21 12:30:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:30:18,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 265 [2022-07-21 12:30:18,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:30:18,737 INFO L225 Difference]: With dead ends: 32304 [2022-07-21 12:30:18,737 INFO L226 Difference]: Without dead ends: 21468 [2022-07-21 12:30:18,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:30:18,764 INFO L413 NwaCegarLoop]: 3054 mSDtfsCounter, 2110 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 5191 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:30:18,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 5191 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:30:18,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21468 states. [2022-07-21 12:30:19,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21468 to 21436. [2022-07-21 12:30:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21436 states, 15990 states have (on average 1.380175109443402) internal successors, (22069), 16277 states have internal predecessors, (22069), 4266 states have call successors, (4266), 1173 states have call predecessors, (4266), 1179 states have return successors, (4569), 4193 states have call predecessors, (4569), 4256 states have call successors, (4569) [2022-07-21 12:30:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21436 states to 21436 states and 30904 transitions. [2022-07-21 12:30:19,395 INFO L78 Accepts]: Start accepts. Automaton has 21436 states and 30904 transitions. Word has length 265 [2022-07-21 12:30:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:30:19,396 INFO L495 AbstractCegarLoop]: Abstraction has 21436 states and 30904 transitions. [2022-07-21 12:30:19,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:30:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 21436 states and 30904 transitions. [2022-07-21 12:30:19,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-21 12:30:19,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:30:19,399 INFO L195 NwaCegarLoop]: trace histogram [37, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:30:19,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-21 12:30:19,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:30:19,627 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:30:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:30:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash -639821084, now seen corresponding path program 1 times [2022-07-21 12:30:19,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:30:19,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203816251] [2022-07-21 12:30:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:30:19,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:30:19,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:30:19,632 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:30:19,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 12:30:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:30:24,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 3830 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 12:30:24,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:30:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 627 proven. 28 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-07-21 12:30:24,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:30:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 46 proven. 306 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2022-07-21 12:30:27,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:30:27,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203816251] [2022-07-21 12:30:27,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203816251] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:30:27,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:30:27,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-07-21 12:30:27,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200804319] [2022-07-21 12:30:27,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:30:27,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 12:30:27,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:30:27,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 12:30:27,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-07-21 12:30:27,808 INFO L87 Difference]: Start difference. First operand 21436 states and 30904 transitions. Second operand has 23 states, 21 states have (on average 4.523809523809524) internal successors, (95), 23 states have internal predecessors, (95), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 12:30:31,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:30:31,706 INFO L93 Difference]: Finished difference Result 43083 states and 63205 transitions. [2022-07-21 12:30:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 12:30:31,707 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.523809523809524) internal successors, (95), 23 states have internal predecessors, (95), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 266 [2022-07-21 12:30:31,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:30:31,793 INFO L225 Difference]: With dead ends: 43083 [2022-07-21 12:30:31,794 INFO L226 Difference]: Without dead ends: 21674 [2022-07-21 12:30:31,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-07-21 12:30:31,866 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 121 mSDsluCounter, 26437 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 28653 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 12:30:31,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 28653 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 12:30:31,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21674 states. [2022-07-21 12:30:32,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21674 to 21452. [2022-07-21 12:30:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21452 states, 16006 states have (on average 1.380794701986755) internal successors, (22101), 16293 states have internal predecessors, (22101), 4266 states have call successors, (4266), 1173 states have call predecessors, (4266), 1179 states have return successors, (4569), 4193 states have call predecessors, (4569), 4256 states have call successors, (4569) [2022-07-21 12:30:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21452 states to 21452 states and 30936 transitions. [2022-07-21 12:30:32,480 INFO L78 Accepts]: Start accepts. Automaton has 21452 states and 30936 transitions. Word has length 266 [2022-07-21 12:30:32,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:30:32,481 INFO L495 AbstractCegarLoop]: Abstraction has 21452 states and 30936 transitions. [2022-07-21 12:30:32,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.523809523809524) internal successors, (95), 23 states have internal predecessors, (95), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 12:30:32,481 INFO L276 IsEmpty]: Start isEmpty. Operand 21452 states and 30936 transitions. [2022-07-21 12:30:32,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-21 12:30:32,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:30:32,483 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:30:32,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-21 12:30:32,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:30:32,699 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:30:32,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:30:32,700 INFO L85 PathProgramCache]: Analyzing trace with hash 607363324, now seen corresponding path program 2 times [2022-07-21 12:30:32,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:30:32,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937848506] [2022-07-21 12:30:32,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:30:32,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:30:32,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:30:32,705 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:30:32,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 12:30:34,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:30:34,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:30:35,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:30:35,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:30:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2022-07-21 12:30:36,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:30:36,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:30:36,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937848506] [2022-07-21 12:30:36,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937848506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:30:36,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:30:36,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:30:36,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541688518] [2022-07-21 12:30:36,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:30:36,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:30:36,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:30:36,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:30:36,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:30:36,695 INFO L87 Difference]: Start difference. First operand 21452 states and 30936 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:30:37,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:30:37,056 INFO L93 Difference]: Finished difference Result 21454 states and 30937 transitions. [2022-07-21 12:30:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:30:37,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 269 [2022-07-21 12:30:37,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:30:37,134 INFO L225 Difference]: With dead ends: 21454 [2022-07-21 12:30:37,134 INFO L226 Difference]: Without dead ends: 21451 [2022-07-21 12:30:37,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:30:37,149 INFO L413 NwaCegarLoop]: 2218 mSDtfsCounter, 2131 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2131 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:30:37,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2131 Valid, 2218 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:30:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21451 states. [2022-07-21 12:30:37,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21451 to 21451. [2022-07-21 12:30:37,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21451 states, 16006 states have (on average 1.3807322254154692) internal successors, (22100), 16292 states have internal predecessors, (22100), 4265 states have call successors, (4265), 1173 states have call predecessors, (4265), 1179 states have return successors, (4569), 4193 states have call predecessors, (4569), 4256 states have call successors, (4569) [2022-07-21 12:30:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21451 states to 21451 states and 30934 transitions. [2022-07-21 12:30:37,873 INFO L78 Accepts]: Start accepts. Automaton has 21451 states and 30934 transitions. Word has length 269 [2022-07-21 12:30:37,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:30:37,873 INFO L495 AbstractCegarLoop]: Abstraction has 21451 states and 30934 transitions. [2022-07-21 12:30:37,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:30:37,873 INFO L276 IsEmpty]: Start isEmpty. Operand 21451 states and 30934 transitions. [2022-07-21 12:30:37,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-07-21 12:30:37,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:30:37,875 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:30:37,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-21 12:30:38,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:30:38,078 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:30:38,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:30:38,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1647951267, now seen corresponding path program 1 times [2022-07-21 12:30:38,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:30:38,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606545245] [2022-07-21 12:30:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:30:38,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:30:38,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:30:38,083 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:30:38,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-21 12:30:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:30:47,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 3864 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:30:47,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:30:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2022-07-21 12:30:49,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:30:49,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:30:49,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606545245] [2022-07-21 12:30:49,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606545245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:30:49,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:30:49,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:30:49,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927655297] [2022-07-21 12:30:49,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:30:49,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:30:49,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:30:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:30:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:30:49,292 INFO L87 Difference]: Start difference. First operand 21451 states and 30934 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:30:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:30:49,652 INFO L93 Difference]: Finished difference Result 21453 states and 30935 transitions. [2022-07-21 12:30:49,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:30:49,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 270 [2022-07-21 12:30:49,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:30:49,726 INFO L225 Difference]: With dead ends: 21453 [2022-07-21 12:30:49,726 INFO L226 Difference]: Without dead ends: 21450 [2022-07-21 12:30:49,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:30:49,741 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 2128 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:30:49,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2128 Valid, 2216 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:30:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21450 states. [2022-07-21 12:30:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21450 to 21450. [2022-07-21 12:30:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21450 states, 16006 states have (on average 1.3806697488441835) internal successors, (22099), 16291 states have internal predecessors, (22099), 4264 states have call successors, (4264), 1173 states have call predecessors, (4264), 1179 states have return successors, (4569), 4193 states have call predecessors, (4569), 4256 states have call successors, (4569) [2022-07-21 12:30:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21450 states to 21450 states and 30932 transitions. [2022-07-21 12:30:50,370 INFO L78 Accepts]: Start accepts. Automaton has 21450 states and 30932 transitions. Word has length 270 [2022-07-21 12:30:50,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:30:50,370 INFO L495 AbstractCegarLoop]: Abstraction has 21450 states and 30932 transitions. [2022-07-21 12:30:50,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:30:50,371 INFO L276 IsEmpty]: Start isEmpty. Operand 21450 states and 30932 transitions. [2022-07-21 12:30:50,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-21 12:30:50,373 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:30:50,373 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:30:50,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-21 12:30:50,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:30:50,584 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:30:50,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:30:50,585 INFO L85 PathProgramCache]: Analyzing trace with hash -453556001, now seen corresponding path program 1 times [2022-07-21 12:30:50,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:30:50,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841771310] [2022-07-21 12:30:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:30:50,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:30:50,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:30:50,589 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:30:50,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-21 12:31:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:31:00,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 3865 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:31:00,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:31:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2022-07-21 12:31:01,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:31:01,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:31:01,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841771310] [2022-07-21 12:31:01,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841771310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:31:01,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:31:01,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:31:01,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249238251] [2022-07-21 12:31:01,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:31:01,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:31:01,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:31:01,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:31:01,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:31:01,958 INFO L87 Difference]: Start difference. First operand 21450 states and 30932 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:31:02,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:31:02,530 INFO L93 Difference]: Finished difference Result 28013 states and 39932 transitions. [2022-07-21 12:31:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:31:02,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 271 [2022-07-21 12:31:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:31:02,626 INFO L225 Difference]: With dead ends: 28013 [2022-07-21 12:31:02,627 INFO L226 Difference]: Without dead ends: 27974 [2022-07-21 12:31:02,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:31:02,647 INFO L413 NwaCegarLoop]: 2316 mSDtfsCounter, 1883 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:31:02,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1883 Valid, 3352 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:31:02,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27974 states. [2022-07-21 12:31:03,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27974 to 26021. [2022-07-21 12:31:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26021 states, 19427 states have (on average 1.375353888917486) internal successors, (26719), 19753 states have internal predecessors, (26719), 5025 states have call successors, (5025), 1562 states have call predecessors, (5025), 1568 states have return successors, (5338), 4946 states have call predecessors, (5338), 5019 states have call successors, (5338) [2022-07-21 12:31:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26021 states to 26021 states and 37082 transitions. [2022-07-21 12:31:03,423 INFO L78 Accepts]: Start accepts. Automaton has 26021 states and 37082 transitions. Word has length 271 [2022-07-21 12:31:03,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:31:03,424 INFO L495 AbstractCegarLoop]: Abstraction has 26021 states and 37082 transitions. [2022-07-21 12:31:03,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:31:03,424 INFO L276 IsEmpty]: Start isEmpty. Operand 26021 states and 37082 transitions. [2022-07-21 12:31:03,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-07-21 12:31:03,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:31:03,438 INFO L195 NwaCegarLoop]: trace histogram [40, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:31:03,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-21 12:31:03,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:31:03,664 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:31:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:31:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash -161822822, now seen corresponding path program 1 times [2022-07-21 12:31:03,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:31:03,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770400990] [2022-07-21 12:31:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:31:03,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:31:03,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:31:03,668 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:31:03,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-21 12:31:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:31:13,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 4303 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:31:13,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:31:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2022-07-21 12:31:13,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:31:13,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:31:13,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770400990] [2022-07-21 12:31:13,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770400990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:31:13,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:31:13,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:31:13,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458096094] [2022-07-21 12:31:13,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:31:13,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:31:13,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:31:13,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:31:13,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:31:13,824 INFO L87 Difference]: Start difference. First operand 26021 states and 37082 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-21 12:31:15,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:31:15,391 INFO L93 Difference]: Finished difference Result 70615 states and 100377 transitions. [2022-07-21 12:31:15,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:31:15,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 383 [2022-07-21 12:31:15,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:31:15,567 INFO L225 Difference]: With dead ends: 70615 [2022-07-21 12:31:15,567 INFO L226 Difference]: Without dead ends: 44619 [2022-07-21 12:31:15,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:31:15,647 INFO L413 NwaCegarLoop]: 3298 mSDtfsCounter, 1629 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 5404 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:31:15,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 5404 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 12:31:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44619 states. [2022-07-21 12:31:16,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44619 to 42635. [2022-07-21 12:31:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42635 states, 31867 states have (on average 1.3690651771424984) internal successors, (43628), 32307 states have internal predecessors, (43628), 8143 states have call successors, (8143), 2626 states have call predecessors, (8143), 2624 states have return successors, (8693), 8036 states have call predecessors, (8693), 8137 states have call successors, (8693) [2022-07-21 12:31:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42635 states to 42635 states and 60464 transitions. [2022-07-21 12:31:17,112 INFO L78 Accepts]: Start accepts. Automaton has 42635 states and 60464 transitions. Word has length 383 [2022-07-21 12:31:17,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:31:17,113 INFO L495 AbstractCegarLoop]: Abstraction has 42635 states and 60464 transitions. [2022-07-21 12:31:17,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-21 12:31:17,113 INFO L276 IsEmpty]: Start isEmpty. Operand 42635 states and 60464 transitions. [2022-07-21 12:31:17,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-07-21 12:31:17,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:31:17,137 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:31:17,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-07-21 12:31:17,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:31:17,352 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:31:17,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:31:17,352 INFO L85 PathProgramCache]: Analyzing trace with hash -321975785, now seen corresponding path program 1 times [2022-07-21 12:31:17,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:31:17,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135426328] [2022-07-21 12:31:17,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:31:17,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:31:17,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:31:17,357 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:31:17,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-21 12:31:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:31:27,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 4401 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 12:31:27,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:31:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1661 trivial. 0 not checked. [2022-07-21 12:31:27,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:31:27,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:31:27,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135426328] [2022-07-21 12:31:27,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135426328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:31:27,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:31:27,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:31:27,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034956902] [2022-07-21 12:31:27,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:31:27,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:31:27,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:31:27,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:31:27,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:31:27,944 INFO L87 Difference]: Start difference. First operand 42635 states and 60464 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-21 12:31:29,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:31:29,529 INFO L93 Difference]: Finished difference Result 93727 states and 134609 transitions. [2022-07-21 12:31:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 12:31:29,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) Word has length 414 [2022-07-21 12:31:29,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:31:29,762 INFO L225 Difference]: With dead ends: 93727 [2022-07-21 12:31:29,762 INFO L226 Difference]: Without dead ends: 51149 [2022-07-21 12:31:29,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 12:31:29,881 INFO L413 NwaCegarLoop]: 2841 mSDtfsCounter, 592 mSDsluCounter, 10802 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 13643 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:31:29,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 13643 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:31:29,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51149 states. [2022-07-21 12:31:31,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51149 to 42715. [2022-07-21 12:31:31,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42715 states, 31931 states have (on average 1.3683254517553474) internal successors, (43692), 32371 states have internal predecessors, (43692), 8143 states have call successors, (8143), 2626 states have call predecessors, (8143), 2640 states have return successors, (8757), 8052 states have call predecessors, (8757), 8137 states have call successors, (8757) [2022-07-21 12:31:31,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42715 states to 42715 states and 60592 transitions. [2022-07-21 12:31:31,540 INFO L78 Accepts]: Start accepts. Automaton has 42715 states and 60592 transitions. Word has length 414 [2022-07-21 12:31:31,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:31:31,540 INFO L495 AbstractCegarLoop]: Abstraction has 42715 states and 60592 transitions. [2022-07-21 12:31:31,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-21 12:31:31,541 INFO L276 IsEmpty]: Start isEmpty. Operand 42715 states and 60592 transitions. [2022-07-21 12:31:31,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-07-21 12:31:31,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:31:31,560 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:31:31,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-21 12:31:31,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:31:31,761 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:31:31,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:31:31,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2043978471, now seen corresponding path program 1 times [2022-07-21 12:31:31,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:31:31,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588847029] [2022-07-21 12:31:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:31:31,765 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:31:31,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:31:31,766 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:31:31,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-21 12:31:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:31:42,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 4431 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 12:31:42,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:31:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2022-07-21 12:31:42,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:31:42,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:31:42,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588847029] [2022-07-21 12:31:42,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588847029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:31:42,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:31:42,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:31:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595451737] [2022-07-21 12:31:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:31:42,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:31:42,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:31:42,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:31:42,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:31:42,262 INFO L87 Difference]: Start difference. First operand 42715 states and 60592 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-21 12:31:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:31:44,295 INFO L93 Difference]: Finished difference Result 94117 states and 135289 transitions. [2022-07-21 12:31:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 12:31:44,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) Word has length 414 [2022-07-21 12:31:44,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:31:44,516 INFO L225 Difference]: With dead ends: 94117 [2022-07-21 12:31:44,516 INFO L226 Difference]: Without dead ends: 51459 [2022-07-21 12:31:44,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 12:31:44,637 INFO L413 NwaCegarLoop]: 2728 mSDtfsCounter, 1197 mSDsluCounter, 10014 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 12742 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:31:44,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 12742 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:31:44,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51459 states. [2022-07-21 12:31:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51459 to 42795. [2022-07-21 12:31:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42795 states, 31995 states have (on average 1.3675886857321455) internal successors, (43756), 32435 states have internal predecessors, (43756), 8143 states have call successors, (8143), 2626 states have call predecessors, (8143), 2656 states have return successors, (8853), 8068 states have call predecessors, (8853), 8137 states have call successors, (8853) [2022-07-21 12:31:46,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42795 states to 42795 states and 60752 transitions. [2022-07-21 12:31:46,328 INFO L78 Accepts]: Start accepts. Automaton has 42795 states and 60752 transitions. Word has length 414 [2022-07-21 12:31:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:31:46,328 INFO L495 AbstractCegarLoop]: Abstraction has 42795 states and 60752 transitions. [2022-07-21 12:31:46,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-21 12:31:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 42795 states and 60752 transitions. [2022-07-21 12:31:46,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-07-21 12:31:46,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:31:46,349 INFO L195 NwaCegarLoop]: trace histogram [40, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:31:46,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-21 12:31:46,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:31:46,550 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:31:46,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:31:46,550 INFO L85 PathProgramCache]: Analyzing trace with hash 438621061, now seen corresponding path program 1 times [2022-07-21 12:31:46,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:31:46,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030507965] [2022-07-21 12:31:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:31:46,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:31:46,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:31:46,554 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:31:46,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-21 12:31:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:31:56,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 4448 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 12:31:56,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:31:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1699 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2022-07-21 12:31:57,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:31:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1699 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 1665 trivial. 0 not checked. [2022-07-21 12:31:59,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:31:59,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030507965] [2022-07-21 12:31:59,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030507965] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:31:59,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:31:59,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2022-07-21 12:31:59,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84520337] [2022-07-21 12:31:59,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:31:59,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 12:31:59,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:31:59,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 12:31:59,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2022-07-21 12:31:59,350 INFO L87 Difference]: Start difference. First operand 42795 states and 60752 transitions. Second operand has 21 states, 20 states have (on average 10.05) internal successors, (201), 17 states have internal predecessors, (201), 6 states have call successors, (55), 2 states have call predecessors, (55), 5 states have return successors, (54), 9 states have call predecessors, (54), 6 states have call successors, (54) [2022-07-21 12:32:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:32:13,599 INFO L93 Difference]: Finished difference Result 112789 states and 165795 transitions. [2022-07-21 12:32:13,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 12:32:13,602 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 10.05) internal successors, (201), 17 states have internal predecessors, (201), 6 states have call successors, (55), 2 states have call predecessors, (55), 5 states have return successors, (54), 9 states have call predecessors, (54), 6 states have call successors, (54) Word has length 420 [2022-07-21 12:32:13,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:32:13,875 INFO L225 Difference]: With dead ends: 112789 [2022-07-21 12:32:13,876 INFO L226 Difference]: Without dead ends: 70051 [2022-07-21 12:32:13,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 823 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-07-21 12:32:13,994 INFO L413 NwaCegarLoop]: 3537 mSDtfsCounter, 4909 mSDsluCounter, 50043 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 1078 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5021 SdHoareTripleChecker+Valid, 53580 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1078 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:32:13,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5021 Valid, 53580 Invalid, 1795 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1078 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-07-21 12:32:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70051 states. [2022-07-21 12:32:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70051 to 42795. [2022-07-21 12:32:16,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42795 states, 31995 states have (on average 1.3668385685263322) internal successors, (43732), 32435 states have internal predecessors, (43732), 8143 states have call successors, (8143), 2626 states have call predecessors, (8143), 2656 states have return successors, (8853), 8060 states have call predecessors, (8853), 8137 states have call successors, (8853)