./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--net--wireless--p54--p54usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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--net--wireless--p54--p54usb.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 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 13:51:32,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 13:51:32,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 13:51:32,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 13:51:32,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 13:51:32,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 13:51:32,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 13:51:32,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 13:51:32,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 13:51:32,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 13:51:32,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 13:51:32,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 13:51:32,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 13:51:32,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 13:51:32,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 13:51:32,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 13:51:32,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 13:51:32,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 13:51:32,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 13:51:32,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 13:51:32,740 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 13:51:32,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 13:51:32,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 13:51:32,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 13:51:32,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 13:51:32,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 13:51:32,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 13:51:32,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 13:51:32,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 13:51:32,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 13:51:32,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 13:51:32,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 13:51:32,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 13:51:32,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 13:51:32,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 13:51:32,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 13:51:32,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 13:51:32,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 13:51:32,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 13:51:32,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 13:51:32,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 13:51:32,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 13:51:32,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 13:51:32,790 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 13:51:32,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 13:51:32,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 13:51:32,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 13:51:32,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 13:51:32,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 13:51:32,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 13:51:32,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 13:51:32,793 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 13:51:32,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 13:51:32,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 13:51:32,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 13:51:32,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 13:51:32,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 13:51:32,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 13:51:32,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 13:51:32,795 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 13:51:32,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 13:51:32,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 13:51:32,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 13:51:32,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 13:51:32,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 13:51:32,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 13:51:32,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 13:51:32,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 13:51:32,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 13:51:32,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 13:51:32,797 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 13:51:32,798 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 13:51:32,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 13:51:32,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab [2022-07-12 13:51:33,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 13:51:33,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 13:51:33,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 13:51:33,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 13:51:33,025 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 13:51:33,026 INFO L432 ainManager$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--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-12 13:51:33,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79b06e443/9de6a958e46a45f796dfadcc2976d8cc/FLAG98c52c202 [2022-07-12 13:51:33,802 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 13:51:33,803 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--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-12 13:51:33,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79b06e443/9de6a958e46a45f796dfadcc2976d8cc/FLAG98c52c202 [2022-07-12 13:51:34,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79b06e443/9de6a958e46a45f796dfadcc2976d8cc [2022-07-12 13:51:34,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 13:51:34,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 13:51:34,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 13:51:34,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 13:51:34,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 13:51:34,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:51:34" (1/1) ... [2022-07-12 13:51:34,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2afd4433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:34, skipping insertion in model container [2022-07-12 13:51:34,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:51:34" (1/1) ... [2022-07-12 13:51:34,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 13:51:34,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 13:51:35,519 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--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-12 13:51:35,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 13:51:35,664 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 13:51:35,890 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-12 13:51:35,901 INFO L158 Benchmark]: Toolchain (without parser) took 1785.14ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 70.0MB in the beginning and 50.6MB in the end (delta: 19.4MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. [2022-07-12 13:51:35,901 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory was 51.3MB in the beginning and 51.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 13:51:35,904 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1783.32ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 70.0MB in the beginning and 50.6MB in the end (delta: 19.4MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. [2022-07-12 13:51:35,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory was 51.3MB in the beginning and 51.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1783.32ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 70.0MB in the beginning and 50.6MB in the end (delta: 19.4MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) 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--net--wireless--p54--p54usb.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 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 13:51:37,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 13:51:37,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 13:51:37,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 13:51:37,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 13:51:37,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 13:51:37,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 13:51:37,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 13:51:37,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 13:51:37,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 13:51:37,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 13:51:37,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 13:51:37,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 13:51:37,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 13:51:37,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 13:51:37,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 13:51:37,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 13:51:37,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 13:51:37,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 13:51:37,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 13:51:37,831 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 13:51:37,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 13:51:37,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 13:51:37,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 13:51:37,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 13:51:37,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 13:51:37,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 13:51:37,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 13:51:37,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 13:51:37,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 13:51:37,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 13:51:37,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 13:51:37,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 13:51:37,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 13:51:37,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 13:51:37,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 13:51:37,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 13:51:37,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 13:51:37,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 13:51:37,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 13:51:37,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 13:51:37,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 13:51:37,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-12 13:51:37,883 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 13:51:37,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 13:51:37,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 13:51:37,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 13:51:37,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 13:51:37,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 13:51:37,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 13:51:37,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 13:51:37,887 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 13:51:37,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 13:51:37,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 13:51:37,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 13:51:37,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 13:51:37,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 13:51:37,897 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 13:51:37,898 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 13:51:37,898 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 13:51:37,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 13:51:37,898 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 13:51:37,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 13:51:37,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 13:51:37,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 13:51:37,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 13:51:37,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 13:51:37,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 13:51:37,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 13:51:37,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 13:51:37,900 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 13:51:37,900 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 13:51:37,901 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 13:51:37,901 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 13:51:37,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 13:51:37,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 13:51:37,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab [2022-07-12 13:51:38,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 13:51:38,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 13:51:38,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 13:51:38,204 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 13:51:38,204 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 13:51:38,206 INFO L432 ainManager$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--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-12 13:51:38,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57b420f77/957ecee6797640dc9048dfe2574e8256/FLAG306341aef [2022-07-12 13:51:38,967 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 13:51:38,968 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--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-12 13:51:39,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57b420f77/957ecee6797640dc9048dfe2574e8256/FLAG306341aef [2022-07-12 13:51:39,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57b420f77/957ecee6797640dc9048dfe2574e8256 [2022-07-12 13:51:39,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 13:51:39,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 13:51:39,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 13:51:39,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 13:51:39,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 13:51:39,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:51:39" (1/1) ... [2022-07-12 13:51:39,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17394e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:39, skipping insertion in model container [2022-07-12 13:51:39,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:51:39" (1/1) ... [2022-07-12 13:51:39,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 13:51:39,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 13:51:40,481 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--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-12 13:51:40,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 13:51:40,667 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-12 13:51:40,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 13:51:40,928 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--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-12 13:51:40,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 13:51:40,979 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 13:51:41,216 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--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-12 13:51:41,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 13:51:41,347 INFO L208 MainTranslator]: Completed translation [2022-07-12 13:51:41,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:41 WrapperNode [2022-07-12 13:51:41,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 13:51:41,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 13:51:41,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 13:51:41,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 13:51:41,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:41" (1/1) ... [2022-07-12 13:51:41,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:41" (1/1) ... [2022-07-12 13:51:41,548 INFO L137 Inliner]: procedures = 232, calls = 1688, calls flagged for inlining = 75, calls inlined = 52, statements flattened = 3434 [2022-07-12 13:51:41,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 13:51:41,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 13:51:41,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 13:51:41,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 13:51:41,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:41" (1/1) ... [2022-07-12 13:51:41,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:41" (1/1) ... [2022-07-12 13:51:41,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:41" (1/1) ... [2022-07-12 13:51:41,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:41" (1/1) ... [2022-07-12 13:51:41,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:41" (1/1) ... [2022-07-12 13:51:41,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:41" (1/1) ... [2022-07-12 13:51:41,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:41" (1/1) ... [2022-07-12 13:51:41,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 13:51:41,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 13:51:41,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 13:51:41,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 13:51:41,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:41" (1/1) ... [2022-07-12 13:51:41,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 13:51:41,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 13:51:41,780 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) [2022-07-12 13:51:41,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 13:51:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-12 13:51:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-12 13:51:41,820 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-12 13:51:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-12 13:51:41,820 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-12 13:51:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-12 13:51:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 13:51:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 13:51:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-12 13:51:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 13:51:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 13:51:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 13:51:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-12 13:51:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-12 13:51:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2022-07-12 13:51:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2022-07-12 13:51:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2022-07-12 13:51:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2022-07-12 13:51:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure p54_free_common [2022-07-12 13:51:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_free_common [2022-07-12 13:51:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_stop [2022-07-12 13:51:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_stop [2022-07-12 13:51:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 13:51:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 13:51:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-12 13:51:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-12 13:51:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 13:51:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 13:51:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 13:51:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 13:51:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 13:51:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 13:51:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-07-12 13:51:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-07-12 13:51:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 13:51:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 13:51:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 13:51:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-12 13:51:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 13:51:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure p54_find_type [2022-07-12 13:51:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_find_type [2022-07-12 13:51:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-12 13:51:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-12 13:51:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-12 13:51:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-12 13:51:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 13:51:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 13:51:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 13:51:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-12 13:51:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 13:51:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-12 13:51:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_open [2022-07-12 13:51:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_open [2022-07-12 13:51:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-12 13:51:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-12 13:51:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-12 13:51:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-12 13:51:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-12 13:51:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_post_reset [2022-07-12 13:51:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_post_reset [2022-07-12 13:51:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-12 13:51:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-12 13:51:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-12 13:51:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-12 13:51:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_disconnect [2022-07-12 13:51:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_disconnect [2022-07-12 13:51:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-12 13:51:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-12 13:51:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2022-07-12 13:51:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2022-07-12 13:51:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 13:51:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 13:51:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-12 13:51:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-12 13:51:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-12 13:51:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-12 13:51:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 13:51:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 13:51:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-07-12 13:51:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-07-12 13:51:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-12 13:51:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_pre_reset [2022-07-12 13:51:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_pre_reset [2022-07-12 13:51:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-12 13:51:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-12 13:51:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-12 13:51:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 13:51:41,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 13:51:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-12 13:51:41,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-12 13:51:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 13:51:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 13:51:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_read [2022-07-12 13:51:41,838 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_read [2022-07-12 13:51:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_write [2022-07-12 13:51:41,839 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_write [2022-07-12 13:51:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-12 13:51:41,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-12 13:51:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-12 13:51:41,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-12 13:51:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 13:51:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev_of_p54u_priv [2022-07-12 13:51:41,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev_of_p54u_priv [2022-07-12 13:51:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-12 13:51:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-12 13:51:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-12 13:51:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_resume [2022-07-12 13:51:41,841 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_resume [2022-07-12 13:51:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-12 13:51:41,841 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-12 13:51:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-12 13:51:41,842 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-12 13:51:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_free_urbs [2022-07-12 13:51:41,844 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_free_urbs [2022-07-12 13:51:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-07-12 13:51:41,844 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-07-12 13:51:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-12 13:51:41,846 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-12 13:51:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_bulk_msg [2022-07-12 13:51:41,846 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_bulk_msg [2022-07-12 13:51:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-12 13:51:41,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-12 13:51:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-12 13:51:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-12 13:51:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-12 13:51:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-07-12 13:51:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-07-12 13:51:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 13:51:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 13:51:42,372 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 13:51:42,375 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 13:51:42,860 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 13:52:45,517 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 13:52:45,527 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 13:52:45,527 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 13:52:45,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:52:45 BoogieIcfgContainer [2022-07-12 13:52:45,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 13:52:45,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 13:52:45,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 13:52:45,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 13:52:45,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 01:51:39" (1/3) ... [2022-07-12 13:52:45,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fff5a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:52:45, skipping insertion in model container [2022-07-12 13:52:45,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:51:41" (2/3) ... [2022-07-12 13:52:45,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fff5a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:52:45, skipping insertion in model container [2022-07-12 13:52:45,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:52:45" (3/3) ... [2022-07-12 13:52:45,536 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-12 13:52:45,548 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 13:52:45,549 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 13:52:45,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 13:52:45,605 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@864e7d4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7cb48e2f [2022-07-12 13:52:45,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 13:52:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 729 states, 516 states have (on average 1.3468992248062015) internal successors, (695), 540 states have internal predecessors, (695), 163 states have call successors, (163), 49 states have call predecessors, (163), 48 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2022-07-12 13:52:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-12 13:52:45,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:52:45,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:52:45,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:52:45,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:52:45,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1349896211, now seen corresponding path program 1 times [2022-07-12 13:52:45,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:52:45,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391310801] [2022-07-12 13:52:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:52:45,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:52:45,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:52:45,643 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) [2022-07-12 13:52:45,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 13:52:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:52:47,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 13:52:47,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:52:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 13:52:47,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:52:47,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:52:47,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391310801] [2022-07-12 13:52:47,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391310801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:52:47,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:52:47,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 13:52:47,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947780374] [2022-07-12 13:52:47,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:52:47,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 13:52:47,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:52:47,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 13:52:47,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 13:52:47,479 INFO L87 Difference]: Start difference. First operand has 729 states, 516 states have (on average 1.3468992248062015) internal successors, (695), 540 states have internal predecessors, (695), 163 states have call successors, (163), 49 states have call predecessors, (163), 48 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 13:52:47,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:52:47,596 INFO L93 Difference]: Finished difference Result 1453 states and 2054 transitions. [2022-07-12 13:52:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 13:52:47,599 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-07-12 13:52:47,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:52:47,619 INFO L225 Difference]: With dead ends: 1453 [2022-07-12 13:52:47,619 INFO L226 Difference]: Without dead ends: 718 [2022-07-12 13:52:47,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 13:52:47,634 INFO L413 NwaCegarLoop]: 1007 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, 1007 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 [2022-07-12 13:52:47,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 13:52:47,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-07-12 13:52:47,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2022-07-12 13:52:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 511 states have (on average 1.3346379647749511) internal successors, (682), 529 states have internal predecessors, (682), 159 states have call successors, (159), 48 states have call predecessors, (159), 47 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-12 13:52:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 994 transitions. [2022-07-12 13:52:47,756 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 994 transitions. Word has length 39 [2022-07-12 13:52:47,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:52:47,756 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 994 transitions. [2022-07-12 13:52:47,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 13:52:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 994 transitions. [2022-07-12 13:52:47,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-12 13:52:47,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:52:47,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:52:47,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 13:52:47,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:52:47,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:52:47,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:52:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1859369301, now seen corresponding path program 1 times [2022-07-12 13:52:47,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:52:47,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114377146] [2022-07-12 13:52:47,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:52:47,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:52:47,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:52:47,984 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) [2022-07-12 13:52:47,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 13:52:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:52:49,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 13:52:49,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:52:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 13:52:50,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:52:50,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:52:50,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114377146] [2022-07-12 13:52:50,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114377146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:52:50,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:52:50,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 13:52:50,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429669183] [2022-07-12 13:52:50,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:52:50,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 13:52:50,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:52:50,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 13:52:50,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 13:52:50,168 INFO L87 Difference]: Start difference. First operand 718 states and 994 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 13:52:50,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:52:50,503 INFO L93 Difference]: Finished difference Result 1433 states and 1985 transitions. [2022-07-12 13:52:50,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 13:52:50,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-07-12 13:52:50,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:52:50,509 INFO L225 Difference]: With dead ends: 1433 [2022-07-12 13:52:50,509 INFO L226 Difference]: Without dead ends: 719 [2022-07-12 13:52:50,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 13:52:50,512 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 176 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 13:52:50,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 3762 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 13:52:50,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-07-12 13:52:50,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2022-07-12 13:52:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 512 states have (on average 1.333984375) internal successors, (683), 530 states have internal predecessors, (683), 159 states have call successors, (159), 48 states have call predecessors, (159), 47 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-12 13:52:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 995 transitions. [2022-07-12 13:52:50,543 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 995 transitions. Word has length 39 [2022-07-12 13:52:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:52:50,545 INFO L495 AbstractCegarLoop]: Abstraction has 719 states and 995 transitions. [2022-07-12 13:52:50,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 13:52:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 995 transitions. [2022-07-12 13:52:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-12 13:52:50,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:52:50,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:52:50,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-12 13:52:50,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:52:50,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:52:50,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:52:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash 290922194, now seen corresponding path program 1 times [2022-07-12 13:52:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:52:50,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234435054] [2022-07-12 13:52:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:52:50,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:52:50,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:52:50,758 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) [2022-07-12 13:52:50,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 13:52:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:52:52,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 13:52:52,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:52:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 13:52:53,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 13:52:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 13:52:54,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:52:54,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234435054] [2022-07-12 13:52:54,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234435054] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 13:52:54,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 13:52:54,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-07-12 13:52:54,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18918577] [2022-07-12 13:52:54,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 13:52:54,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 13:52:54,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:52:54,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 13:52:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 13:52:54,193 INFO L87 Difference]: Start difference. First operand 719 states and 995 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 13:52:54,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:52:54,693 INFO L93 Difference]: Finished difference Result 1435 states and 1987 transitions. [2022-07-12 13:52:54,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 13:52:54,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2022-07-12 13:52:54,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:52:54,699 INFO L225 Difference]: With dead ends: 1435 [2022-07-12 13:52:54,699 INFO L226 Difference]: Without dead ends: 720 [2022-07-12 13:52:54,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-12 13:52:54,706 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 177 mSDsluCounter, 4550 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 5542 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 13:52:54,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 5542 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 13:52:54,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-07-12 13:52:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2022-07-12 13:52:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 513 states have (on average 1.3333333333333333) internal successors, (684), 531 states have internal predecessors, (684), 159 states have call successors, (159), 48 states have call predecessors, (159), 47 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-12 13:52:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 996 transitions. [2022-07-12 13:52:54,740 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 996 transitions. Word has length 40 [2022-07-12 13:52:54,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:52:54,740 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 996 transitions. [2022-07-12 13:52:54,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 13:52:54,740 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 996 transitions. [2022-07-12 13:52:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 13:52:54,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:52:54,743 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 13:52:54,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 13:52:54,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:52:54,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:52:54,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:52:54,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1769518197, now seen corresponding path program 2 times [2022-07-12 13:52:54,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:52:54,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588656300] [2022-07-12 13:52:54,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 13:52:54,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:52:54,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:52:54,968 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) [2022-07-12 13:52:54,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 13:52:56,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 13:52:56,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 13:52:56,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 13:52:56,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:52:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 13:52:56,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:52:56,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:52:56,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588656300] [2022-07-12 13:52:56,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588656300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:52:56,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:52:56,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 13:52:56,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587305497] [2022-07-12 13:52:56,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:52:56,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 13:52:56,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:52:56,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 13:52:56,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:52:56,925 INFO L87 Difference]: Start difference. First operand 720 states and 996 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 13:52:59,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:52:59,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:52:59,579 INFO L93 Difference]: Finished difference Result 2125 states and 2944 transitions. [2022-07-12 13:52:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 13:52:59,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-07-12 13:52:59,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:52:59,586 INFO L225 Difference]: With dead ends: 2125 [2022-07-12 13:52:59,586 INFO L226 Difference]: Without dead ends: 1413 [2022-07-12 13:52:59,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:52:59,593 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 959 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 13:52:59,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 2134 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 13:52:59,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2022-07-12 13:52:59,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1409. [2022-07-12 13:52:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1005 states have (on average 1.3333333333333333) internal successors, (1340), 1036 states have internal predecessors, (1340), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-12 13:52:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1952 transitions. [2022-07-12 13:52:59,651 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1952 transitions. Word has length 41 [2022-07-12 13:52:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:52:59,651 INFO L495 AbstractCegarLoop]: Abstraction has 1409 states and 1952 transitions. [2022-07-12 13:52:59,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 13:52:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1952 transitions. [2022-07-12 13:52:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-12 13:52:59,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:52:59,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:52:59,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 13:52:59,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:52:59,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:52:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:52:59,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1815198130, now seen corresponding path program 1 times [2022-07-12 13:52:59,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:52:59,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833197233] [2022-07-12 13:52:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:52:59,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:52:59,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:52:59,882 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) [2022-07-12 13:52:59,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 13:53:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:53:01,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 13:53:01,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:53:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 13:53:02,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 13:53:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 13:53:05,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:53:05,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833197233] [2022-07-12 13:53:05,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833197233] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 13:53:05,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 13:53:05,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-12 13:53:05,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142194060] [2022-07-12 13:53:05,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 13:53:05,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 13:53:05,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:53:05,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 13:53:05,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-12 13:53:05,197 INFO L87 Difference]: Start difference. First operand 1409 states and 1952 transitions. Second operand has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-12 13:53:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:53:06,252 INFO L93 Difference]: Finished difference Result 2808 states and 3895 transitions. [2022-07-12 13:53:06,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 13:53:06,253 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2022-07-12 13:53:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:53:06,261 INFO L225 Difference]: With dead ends: 2808 [2022-07-12 13:53:06,261 INFO L226 Difference]: Without dead ends: 1411 [2022-07-12 13:53:06,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-12 13:53:06,268 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 354 mSDsluCounter, 4749 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 5741 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 13:53:06,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 5741 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 13:53:06,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-07-12 13:53:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1411. [2022-07-12 13:53:06,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1007 states have (on average 1.3326713008937439) internal successors, (1342), 1038 states have internal predecessors, (1342), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-12 13:53:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1954 transitions. [2022-07-12 13:53:06,329 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1954 transitions. Word has length 61 [2022-07-12 13:53:06,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:53:06,329 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1954 transitions. [2022-07-12 13:53:06,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-12 13:53:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1954 transitions. [2022-07-12 13:53:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 13:53:06,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:53:06,333 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:53:06,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-12 13:53:06,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:53:06,551 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:53:06,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:53:06,552 INFO L85 PathProgramCache]: Analyzing trace with hash 934865561, now seen corresponding path program 2 times [2022-07-12 13:53:06,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:53:06,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541523728] [2022-07-12 13:53:06,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 13:53:06,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:53:06,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:53:06,560 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) [2022-07-12 13:53:06,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 13:53:08,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 13:53:08,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 13:53:08,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 13:53:08,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:53:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 13:53:08,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:53:08,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:53:08,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541523728] [2022-07-12 13:53:08,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541523728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:53:08,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:53:08,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 13:53:08,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128787221] [2022-07-12 13:53:08,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:53:08,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 13:53:08,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:53:08,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 13:53:08,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:53:08,353 INFO L87 Difference]: Start difference. First operand 1411 states and 1954 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 13:53:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:53:08,709 INFO L93 Difference]: Finished difference Result 1433 states and 1980 transitions. [2022-07-12 13:53:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 13:53:08,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2022-07-12 13:53:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:53:08,716 INFO L225 Difference]: With dead ends: 1433 [2022-07-12 13:53:08,716 INFO L226 Difference]: Without dead ends: 1422 [2022-07-12 13:53:08,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:53:08,717 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 989 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1019 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 [2022-07-12 13:53:08,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1019 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 13:53:08,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2022-07-12 13:53:08,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1411. [2022-07-12 13:53:08,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1007 states have (on average 1.3316782522343595) internal successors, (1341), 1038 states have internal predecessors, (1341), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-12 13:53:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1953 transitions. [2022-07-12 13:53:08,769 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1953 transitions. Word has length 62 [2022-07-12 13:53:08,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:53:08,770 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1953 transitions. [2022-07-12 13:53:08,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 13:53:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1953 transitions. [2022-07-12 13:53:08,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 13:53:08,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:53:08,771 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:53:08,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 13:53:08,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:53:08,987 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:53:08,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:53:08,988 INFO L85 PathProgramCache]: Analyzing trace with hash 992123863, now seen corresponding path program 1 times [2022-07-12 13:53:08,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:53:08,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764508456] [2022-07-12 13:53:08,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:53:08,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:53:08,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:53:08,993 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) [2022-07-12 13:53:08,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 13:53:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:53:10,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 13:53:10,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:53:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 13:53:12,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 13:53:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 13:53:15,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:53:15,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764508456] [2022-07-12 13:53:15,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764508456] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 13:53:15,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 13:53:15,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-12 13:53:15,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292549510] [2022-07-12 13:53:15,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 13:53:15,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 13:53:15,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:53:15,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 13:53:15,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-12 13:53:15,784 INFO L87 Difference]: Start difference. First operand 1411 states and 1953 transitions. Second operand has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-12 13:53:17,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:53:17,183 INFO L93 Difference]: Finished difference Result 2812 states and 3897 transitions. [2022-07-12 13:53:17,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 13:53:17,184 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) Word has length 62 [2022-07-12 13:53:17,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:53:17,191 INFO L225 Difference]: With dead ends: 2812 [2022-07-12 13:53:17,191 INFO L226 Difference]: Without dead ends: 1413 [2022-07-12 13:53:17,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-12 13:53:17,196 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 181 mSDsluCounter, 5540 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 13:53:17,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 6532 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 13:53:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2022-07-12 13:53:17,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1413. [2022-07-12 13:53:17,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1009 states have (on average 1.3310208126858276) internal successors, (1343), 1040 states have internal predecessors, (1343), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-12 13:53:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1955 transitions. [2022-07-12 13:53:17,244 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1955 transitions. Word has length 62 [2022-07-12 13:53:17,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:53:17,246 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 1955 transitions. [2022-07-12 13:53:17,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-12 13:53:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1955 transitions. [2022-07-12 13:53:17,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 13:53:17,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:53:17,248 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:53:17,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-12 13:53:17,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:53:17,468 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:53:17,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:53:17,468 INFO L85 PathProgramCache]: Analyzing trace with hash -528382000, now seen corresponding path program 2 times [2022-07-12 13:53:17,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:53:17,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054799356] [2022-07-12 13:53:17,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 13:53:17,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:53:17,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:53:17,473 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) [2022-07-12 13:53:17,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-12 13:53:19,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 13:53:19,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 13:53:19,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 13:53:19,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:53:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 13:53:21,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:53:21,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:53:21,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054799356] [2022-07-12 13:53:21,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054799356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:53:21,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:53:21,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 13:53:21,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912662517] [2022-07-12 13:53:21,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:53:21,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 13:53:21,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:53:21,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 13:53:21,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:53:21,508 INFO L87 Difference]: Start difference. First operand 1413 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 13:53:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:53:21,585 INFO L93 Difference]: Finished difference Result 1415 states and 1956 transitions. [2022-07-12 13:53:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 13:53:21,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2022-07-12 13:53:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:53:21,592 INFO L225 Difference]: With dead ends: 1415 [2022-07-12 13:53:21,592 INFO L226 Difference]: Without dead ends: 1412 [2022-07-12 13:53:21,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:53:21,593 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 948 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 991 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 [2022-07-12 13:53:21,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 991 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 13:53:21,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-07-12 13:53:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2022-07-12 13:53:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1009 states have (on average 1.330029732408325) internal successors, (1342), 1039 states have internal predecessors, (1342), 308 states have call successors, (308), 95 states have call predecessors, (308), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-12 13:53:21,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1953 transitions. [2022-07-12 13:53:21,639 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1953 transitions. Word has length 63 [2022-07-12 13:53:21,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:53:21,640 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 1953 transitions. [2022-07-12 13:53:21,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 13:53:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1953 transitions. [2022-07-12 13:53:21,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 13:53:21,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:53:21,642 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:53:21,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-12 13:53:21,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:53:21,855 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:53:21,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:53:21,856 INFO L85 PathProgramCache]: Analyzing trace with hash 799813546, now seen corresponding path program 1 times [2022-07-12 13:53:21,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:53:21,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751390523] [2022-07-12 13:53:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:53:21,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:53:21,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:53:21,863 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) [2022-07-12 13:53:21,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-12 13:53:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:53:24,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 13:53:24,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:53:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 13:53:26,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:53:26,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:53:26,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751390523] [2022-07-12 13:53:26,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751390523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:53:26,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:53:26,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 13:53:26,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796778985] [2022-07-12 13:53:26,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:53:26,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 13:53:26,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:53:26,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 13:53:26,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:53:26,497 INFO L87 Difference]: Start difference. First operand 1412 states and 1953 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 13:53:26,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:53:26,559 INFO L93 Difference]: Finished difference Result 1414 states and 1954 transitions. [2022-07-12 13:53:26,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 13:53:26,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2022-07-12 13:53:26,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:53:26,566 INFO L225 Difference]: With dead ends: 1414 [2022-07-12 13:53:26,567 INFO L226 Difference]: Without dead ends: 1411 [2022-07-12 13:53:26,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:53:26,568 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 945 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 989 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 [2022-07-12 13:53:26,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 989 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 13:53:26,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-07-12 13:53:26,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1411. [2022-07-12 13:53:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1009 states have (on average 1.3290386521308226) internal successors, (1341), 1038 states have internal predecessors, (1341), 307 states have call successors, (307), 95 states have call predecessors, (307), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-12 13:53:26,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1951 transitions. [2022-07-12 13:53:26,624 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1951 transitions. Word has length 64 [2022-07-12 13:53:26,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:53:26,625 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1951 transitions. [2022-07-12 13:53:26,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 13:53:26,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1951 transitions. [2022-07-12 13:53:26,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 13:53:26,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:53:26,627 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:53:26,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-12 13:53:26,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:53:26,848 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:53:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:53:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash -975792621, now seen corresponding path program 1 times [2022-07-12 13:53:26,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:53:26,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594459891] [2022-07-12 13:53:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:53:26,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:53:26,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:53:26,855 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) [2022-07-12 13:53:26,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-12 13:53:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:53:28,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 3203 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 13:53:28,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:53:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 13:53:31,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:53:31,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:53:31,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594459891] [2022-07-12 13:53:31,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594459891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:53:31,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:53:31,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 13:53:31,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699532285] [2022-07-12 13:53:31,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:53:31,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 13:53:31,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:53:31,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 13:53:31,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:53:31,378 INFO L87 Difference]: Start difference. First operand 1411 states and 1951 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 13:53:31,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:53:31,438 INFO L93 Difference]: Finished difference Result 1413 states and 1952 transitions. [2022-07-12 13:53:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 13:53:31,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2022-07-12 13:53:31,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:53:31,446 INFO L225 Difference]: With dead ends: 1413 [2022-07-12 13:53:31,446 INFO L226 Difference]: Without dead ends: 1410 [2022-07-12 13:53:31,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:53:31,448 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 942 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 987 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 [2022-07-12 13:53:31,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 987 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 13:53:31,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2022-07-12 13:53:31,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1410. [2022-07-12 13:53:31,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1009 states have (on average 1.32804757185332) internal successors, (1340), 1037 states have internal predecessors, (1340), 306 states have call successors, (306), 95 states have call predecessors, (306), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-12 13:53:31,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1949 transitions. [2022-07-12 13:53:31,538 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1949 transitions. Word has length 65 [2022-07-12 13:53:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:53:31,539 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 1949 transitions. [2022-07-12 13:53:31,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 13:53:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1949 transitions. [2022-07-12 13:53:31,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 13:53:31,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:53:31,544 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:53:31,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-12 13:53:31,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:53:31,763 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:53:31,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:53:31,764 INFO L85 PathProgramCache]: Analyzing trace with hash -185004083, now seen corresponding path program 1 times [2022-07-12 13:53:31,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:53:31,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072624745] [2022-07-12 13:53:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:53:31,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:53:31,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:53:31,769 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) [2022-07-12 13:53:31,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-12 13:53:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:53:33,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 13:53:33,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:53:36,370 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 13:53:36,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:53:36,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:53:36,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072624745] [2022-07-12 13:53:36,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072624745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:53:36,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:53:36,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 13:53:36,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407583009] [2022-07-12 13:53:36,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:53:36,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 13:53:36,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:53:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 13:53:36,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:53:36,372 INFO L87 Difference]: Start difference. First operand 1410 states and 1949 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 13:53:36,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:53:36,623 INFO L93 Difference]: Finished difference Result 4176 states and 5791 transitions. [2022-07-12 13:53:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 13:53:36,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 66 [2022-07-12 13:53:36,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:53:36,645 INFO L225 Difference]: With dead ends: 4176 [2022-07-12 13:53:36,646 INFO L226 Difference]: Without dead ends: 2776 [2022-07-12 13:53:36,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:53:36,654 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 931 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 13:53:36,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 2140 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 13:53:36,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2022-07-12 13:53:36,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2771. [2022-07-12 13:53:36,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 1981 states have (on average 1.331145885916204) internal successors, (2637), 2035 states have internal predecessors, (2637), 605 states have call successors, (605), 187 states have call predecessors, (605), 184 states have return successors, (602), 600 states have call predecessors, (602), 602 states have call successors, (602) [2022-07-12 13:53:36,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 3844 transitions. [2022-07-12 13:53:36,785 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 3844 transitions. Word has length 66 [2022-07-12 13:53:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:53:36,786 INFO L495 AbstractCegarLoop]: Abstraction has 2771 states and 3844 transitions. [2022-07-12 13:53:36,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 13:53:36,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 3844 transitions. [2022-07-12 13:53:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 13:53:36,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:53:36,790 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:53:36,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-12 13:53:37,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:53:37,004 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:53:37,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:53:37,004 INFO L85 PathProgramCache]: Analyzing trace with hash -779176628, now seen corresponding path program 1 times [2022-07-12 13:53:37,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:53:37,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985056053] [2022-07-12 13:53:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:53:37,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:53:37,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:53:37,009 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) [2022-07-12 13:53:37,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-12 13:53:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:53:39,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 3558 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 13:53:39,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:53:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 13:53:39,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:53:39,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:53:39,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985056053] [2022-07-12 13:53:39,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985056053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:53:39,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:53:39,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 13:53:39,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815866262] [2022-07-12 13:53:39,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:53:39,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 13:53:39,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:53:39,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 13:53:39,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:53:39,720 INFO L87 Difference]: Start difference. First operand 2771 states and 3844 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 13:53:40,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:53:40,416 INFO L93 Difference]: Finished difference Result 5599 states and 7766 transitions. [2022-07-12 13:53:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 13:53:40,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2022-07-12 13:53:40,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:53:40,432 INFO L225 Difference]: With dead ends: 5599 [2022-07-12 13:53:40,432 INFO L226 Difference]: Without dead ends: 2846 [2022-07-12 13:53:40,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:53:40,442 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 52 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 13:53:40,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1948 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 13:53:40,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-07-12 13:53:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2833. [2022-07-12 13:53:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2833 states, 2041 states have (on average 1.33219010289074) internal successors, (2719), 2095 states have internal predecessors, (2719), 605 states have call successors, (605), 189 states have call predecessors, (605), 186 states have return successors, (602), 600 states have call predecessors, (602), 602 states have call successors, (602) [2022-07-12 13:53:40,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3926 transitions. [2022-07-12 13:53:40,568 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3926 transitions. Word has length 112 [2022-07-12 13:53:40,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:53:40,568 INFO L495 AbstractCegarLoop]: Abstraction has 2833 states and 3926 transitions. [2022-07-12 13:53:40,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 13:53:40,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3926 transitions. [2022-07-12 13:53:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 13:53:40,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:53:40,575 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:53:40,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-12 13:53:40,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:53:40,792 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:53:40,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:53:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2095317379, now seen corresponding path program 1 times [2022-07-12 13:53:40,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:53:40,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336209127] [2022-07-12 13:53:40,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:53:40,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:53:40,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:53:40,798 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) [2022-07-12 13:53:40,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-12 13:53:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:53:43,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 3652 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 13:53:43,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:53:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 13:53:45,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:53:45,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:53:45,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336209127] [2022-07-12 13:53:45,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336209127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:53:45,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:53:45,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 13:53:45,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319747479] [2022-07-12 13:53:45,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:53:45,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 13:53:45,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:53:45,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 13:53:45,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 13:53:45,192 INFO L87 Difference]: Start difference. First operand 2833 states and 3926 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 13:53:48,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:53:50,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:53:50,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:53:50,544 INFO L93 Difference]: Finished difference Result 5905 states and 8249 transitions. [2022-07-12 13:53:50,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 13:53:50,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-07-12 13:53:50,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:53:50,563 INFO L225 Difference]: With dead ends: 5905 [2022-07-12 13:53:50,563 INFO L226 Difference]: Without dead ends: 3102 [2022-07-12 13:53:50,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 13:53:50,574 INFO L413 NwaCegarLoop]: 1072 mSDtfsCounter, 152 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 5191 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-12 13:53:50,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 5191 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-07-12 13:53:50,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2022-07-12 13:53:50,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 2853. [2022-07-12 13:53:50,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2057 states have (on average 1.329606222654351) internal successors, (2735), 2111 states have internal predecessors, (2735), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-12 13:53:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 3970 transitions. [2022-07-12 13:53:50,710 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 3970 transitions. Word has length 141 [2022-07-12 13:53:50,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:53:50,710 INFO L495 AbstractCegarLoop]: Abstraction has 2853 states and 3970 transitions. [2022-07-12 13:53:50,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 13:53:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 3970 transitions. [2022-07-12 13:53:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 13:53:50,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:53:50,717 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:53:50,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-07-12 13:53:50,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:53:50,932 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:53:50,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:53:50,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1072486492, now seen corresponding path program 1 times [2022-07-12 13:53:50,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:53:50,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758592196] [2022-07-12 13:53:50,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:53:50,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:53:50,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:53:50,938 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) [2022-07-12 13:53:50,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-12 13:53:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:53:54,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 13:53:54,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:53:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 13:53:55,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 13:53:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 13:53:59,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:53:59,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758592196] [2022-07-12 13:53:59,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758592196] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 13:53:59,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 13:53:59,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-12 13:53:59,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088834669] [2022-07-12 13:53:59,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 13:53:59,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 13:53:59,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:53:59,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 13:53:59,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-12 13:53:59,211 INFO L87 Difference]: Start difference. First operand 2853 states and 3970 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 13:54:04,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:54:04,119 INFO L93 Difference]: Finished difference Result 5726 states and 7989 transitions. [2022-07-12 13:54:04,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 13:54:04,120 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 147 [2022-07-12 13:54:04,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:54:04,135 INFO L225 Difference]: With dead ends: 5726 [2022-07-12 13:54:04,135 INFO L226 Difference]: Without dead ends: 2887 [2022-07-12 13:54:04,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-07-12 13:54:04,145 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 26 mSDsluCounter, 4918 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5903 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 13:54:04,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5903 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 13:54:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2022-07-12 13:54:04,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2877. [2022-07-12 13:54:04,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2081 states have (on average 1.3258049014896685) internal successors, (2759), 2135 states have internal predecessors, (2759), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-12 13:54:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 3994 transitions. [2022-07-12 13:54:04,331 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 3994 transitions. Word has length 147 [2022-07-12 13:54:04,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:54:04,332 INFO L495 AbstractCegarLoop]: Abstraction has 2877 states and 3994 transitions. [2022-07-12 13:54:04,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 13:54:04,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 3994 transitions. [2022-07-12 13:54:04,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-12 13:54:04,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:54:04,337 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:54:04,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-12 13:54:04,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:54:04,560 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:54:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:54:04,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1148257020, now seen corresponding path program 2 times [2022-07-12 13:54:04,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:54:04,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208819606] [2022-07-12 13:54:04,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 13:54:04,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:54:04,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:54:04,569 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) [2022-07-12 13:54:04,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-12 13:54:06,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 13:54:06,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 13:54:06,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 13:54:06,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:54:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-12 13:54:07,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:54:07,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:54:07,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208819606] [2022-07-12 13:54:07,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208819606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:54:07,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:54:07,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 13:54:07,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100213543] [2022-07-12 13:54:07,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:54:07,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 13:54:07,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:54:07,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 13:54:07,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:54:07,135 INFO L87 Difference]: Start difference. First operand 2877 states and 3994 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-12 13:54:07,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:54:07,350 INFO L93 Difference]: Finished difference Result 6273 states and 8767 transitions. [2022-07-12 13:54:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 13:54:07,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 153 [2022-07-12 13:54:07,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:54:07,374 INFO L225 Difference]: With dead ends: 6273 [2022-07-12 13:54:07,375 INFO L226 Difference]: Without dead ends: 3426 [2022-07-12 13:54:07,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:54:07,387 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 147 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 13:54:07,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2181 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 13:54:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2022-07-12 13:54:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 2889. [2022-07-12 13:54:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2093 states have (on average 1.3239369326325847) internal successors, (2771), 2147 states have internal predecessors, (2771), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-12 13:54:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4006 transitions. [2022-07-12 13:54:07,516 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4006 transitions. Word has length 153 [2022-07-12 13:54:07,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:54:07,517 INFO L495 AbstractCegarLoop]: Abstraction has 2889 states and 4006 transitions. [2022-07-12 13:54:07,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-12 13:54:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4006 transitions. [2022-07-12 13:54:07,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 13:54:07,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:54:07,522 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:54:07,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-12 13:54:07,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:54:07,739 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:54:07,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:54:07,740 INFO L85 PathProgramCache]: Analyzing trace with hash -604240790, now seen corresponding path program 1 times [2022-07-12 13:54:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:54:07,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870074462] [2022-07-12 13:54:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:54:07,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:54:07,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:54:07,745 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) [2022-07-12 13:54:07,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-12 13:54:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:54:11,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 3771 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 13:54:11,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:54:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 67 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 13:54:15,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 13:54:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 57 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 13:54:24,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:54:24,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870074462] [2022-07-12 13:54:24,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870074462] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 13:54:24,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 13:54:24,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-12 13:54:24,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117674165] [2022-07-12 13:54:24,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 13:54:24,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 13:54:24,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:54:24,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 13:54:24,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-12 13:54:24,310 INFO L87 Difference]: Start difference. First operand 2889 states and 4006 transitions. Second operand has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-12 13:54:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:54:45,344 INFO L93 Difference]: Finished difference Result 5846 states and 8145 transitions. [2022-07-12 13:54:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 13:54:45,346 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 169 [2022-07-12 13:54:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:54:45,372 INFO L225 Difference]: With dead ends: 5846 [2022-07-12 13:54:45,372 INFO L226 Difference]: Without dead ends: 2971 [2022-07-12 13:54:45,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=635, Invalid=1171, Unknown=0, NotChecked=0, Total=1806 [2022-07-12 13:54:45,384 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 158 mSDsluCounter, 14805 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 15796 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-12 13:54:45,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 15796 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-07-12 13:54:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2022-07-12 13:54:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2937. [2022-07-12 13:54:45,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2141 states have (on average 1.3166744511910322) internal successors, (2819), 2195 states have internal predecessors, (2819), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-12 13:54:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 4054 transitions. [2022-07-12 13:54:45,550 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 4054 transitions. Word has length 169 [2022-07-12 13:54:45,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:54:45,551 INFO L495 AbstractCegarLoop]: Abstraction has 2937 states and 4054 transitions. [2022-07-12 13:54:45,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-12 13:54:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 4054 transitions. [2022-07-12 13:54:45,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-12 13:54:45,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:54:45,556 INFO L195 NwaCegarLoop]: trace histogram [26, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:54:45,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-12 13:54:45,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:54:45,775 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:54:45,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:54:45,776 INFO L85 PathProgramCache]: Analyzing trace with hash 731148714, now seen corresponding path program 2 times [2022-07-12 13:54:45,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:54:45,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710620530] [2022-07-12 13:54:45,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 13:54:45,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:54:45,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:54:45,781 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) [2022-07-12 13:54:45,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-12 13:54:47,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 13:54:47,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 13:54:48,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 3127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 13:54:48,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:54:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2022-07-12 13:54:48,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:54:48,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:54:48,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710620530] [2022-07-12 13:54:48,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710620530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:54:48,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:54:48,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 13:54:48,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037213176] [2022-07-12 13:54:48,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:54:48,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 13:54:48,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:54:48,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 13:54:48,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:54:48,591 INFO L87 Difference]: Start difference. First operand 2937 states and 4054 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-12 13:54:50,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:54:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:54:51,104 INFO L93 Difference]: Finished difference Result 5846 states and 8078 transitions. [2022-07-12 13:54:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 13:54:51,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 181 [2022-07-12 13:54:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:54:51,117 INFO L225 Difference]: With dead ends: 5846 [2022-07-12 13:54:51,117 INFO L226 Difference]: Without dead ends: 2939 [2022-07-12 13:54:51,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 13:54:51,139 INFO L413 NwaCegarLoop]: 1901 mSDtfsCounter, 960 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 13:54:51,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2867 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 13:54:51,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-07-12 13:54:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2934. [2022-07-12 13:54:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2934 states, 2139 states have (on average 1.3151005142589995) internal successors, (2813), 2193 states have internal predecessors, (2813), 604 states have call successors, (604), 188 states have call predecessors, (604), 190 states have return successors, (628), 604 states have call predecessors, (628), 600 states have call successors, (628) [2022-07-12 13:54:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4045 transitions. [2022-07-12 13:54:51,248 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4045 transitions. Word has length 181 [2022-07-12 13:54:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:54:51,249 INFO L495 AbstractCegarLoop]: Abstraction has 2934 states and 4045 transitions. [2022-07-12 13:54:51,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-12 13:54:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4045 transitions. [2022-07-12 13:54:51,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-12 13:54:51,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:54:51,254 INFO L195 NwaCegarLoop]: trace histogram [26, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 13:54:51,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-12 13:54:51,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 13:54:51,475 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:54:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:54:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1008632914, now seen corresponding path program 1 times [2022-07-12 13:54:51,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 13:54:51,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131711260] [2022-07-12 13:54:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:54:51,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 13:54:51,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 13:54:51,481 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) [2022-07-12 13:54:51,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-12 13:54:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:54:55,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 3911 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-12 13:54:55,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:55:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 127 proven. 253 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 13:55:09,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 13:55:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 117 proven. 253 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 13:55:42,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 13:55:42,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131711260] [2022-07-12 13:55:42,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131711260] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 13:55:42,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 13:55:42,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-12 13:55:42,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683518351] [2022-07-12 13:55:42,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 13:55:42,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-12 13:55:42,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 13:55:42,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-12 13:55:42,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-07-12 13:55:42,241 INFO L87 Difference]: Start difference. First operand 2934 states and 4045 transitions. Second operand has 50 states, 50 states have (on average 3.26) internal successors, (163), 50 states have internal predecessors, (163), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28)