./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.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 f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 01:37:20,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 01:37:20,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 01:37:20,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 01:37:20,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 01:37:20,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 01:37:20,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 01:37:20,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 01:37:20,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 01:37:20,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 01:37:20,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 01:37:20,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 01:37:20,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 01:37:20,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 01:37:20,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 01:37:20,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 01:37:20,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 01:37:20,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 01:37:20,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 01:37:20,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 01:37:20,858 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 01:37:20,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 01:37:20,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 01:37:20,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 01:37:20,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 01:37:20,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 01:37:20,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 01:37:20,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 01:37:20,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 01:37:20,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 01:37:20,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 01:37:20,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 01:37:20,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 01:37:20,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 01:37:20,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 01:37:20,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 01:37:20,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 01:37:20,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 01:37:20,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 01:37:20,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 01:37:20,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 01:37:20,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 01:37:20,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 01:37:20,917 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 01:37:20,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 01:37:20,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 01:37:20,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 01:37:20,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 01:37:20,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 01:37:20,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 01:37:20,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 01:37:20,921 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 01:37:20,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 01:37:20,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 01:37:20,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 01:37:20,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 01:37:20,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 01:37:20,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 01:37:20,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 01:37:20,928 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 01:37:20,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 01:37:20,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 01:37:20,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 01:37:20,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 01:37:20,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:37:20,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 01:37:20,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 01:37:20,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 01:37:20,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 01:37:20,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 01:37:20,931 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 01:37:20,932 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 01:37:20,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 01:37:20,932 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef [2022-07-20 01:37:21,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 01:37:21,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 01:37:21,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 01:37:21,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 01:37:21,236 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 01:37:21,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2022-07-20 01:37:21,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02cbd0b6e/ac708ada3dfd4497becef7e96f6fde0a/FLAGda81070b2 [2022-07-20 01:37:22,025 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 01:37:22,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2022-07-20 01:37:22,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02cbd0b6e/ac708ada3dfd4497becef7e96f6fde0a/FLAGda81070b2 [2022-07-20 01:37:22,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02cbd0b6e/ac708ada3dfd4497becef7e96f6fde0a [2022-07-20 01:37:22,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 01:37:22,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 01:37:22,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 01:37:22,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 01:37:22,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 01:37:22,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:37:22" (1/1) ... [2022-07-20 01:37:22,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201c82fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:22, skipping insertion in model container [2022-07-20 01:37:22,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:37:22" (1/1) ... [2022-07-20 01:37:22,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 01:37:22,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:37:24,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2022-07-20 01:37:24,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:37:24,737 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 01:37:25,001 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:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-20 01:37:25,010 INFO L158 Benchmark]: Toolchain (without parser) took 2685.02ms. Allocated memory was 115.3MB in the beginning and 224.4MB in the end (delta: 109.1MB). Free memory was 64.9MB in the beginning and 134.0MB in the end (delta: -69.1MB). Peak memory consumption was 75.6MB. Max. memory is 16.1GB. [2022-07-20 01:37:25,011 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 115.3MB. Free memory was 85.9MB in the beginning and 85.9MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 01:37:25,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2681.28ms. Allocated memory was 115.3MB in the beginning and 224.4MB in the end (delta: 109.1MB). Free memory was 64.7MB in the beginning and 134.0MB in the end (delta: -69.3MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. [2022-07-20 01:37:25,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 115.3MB. Free memory was 85.9MB in the beginning and 85.9MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2681.28ms. Allocated memory was 115.3MB in the beginning and 224.4MB in the end (delta: 109.1MB). Free memory was 64.7MB in the beginning and 134.0MB in the end (delta: -69.3MB). Peak memory consumption was 73.5MB. 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-43_2a-drivers--usb--gadget--udc--bdc--bdc.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 f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 01:37:26,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 01:37:26,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 01:37:26,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 01:37:26,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 01:37:26,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 01:37:26,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 01:37:26,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 01:37:26,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 01:37:26,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 01:37:26,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 01:37:26,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 01:37:26,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 01:37:26,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 01:37:26,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 01:37:26,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 01:37:26,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 01:37:26,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 01:37:26,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 01:37:26,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 01:37:26,898 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 01:37:26,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 01:37:26,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 01:37:26,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 01:37:26,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 01:37:26,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 01:37:26,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 01:37:26,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 01:37:26,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 01:37:26,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 01:37:26,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 01:37:26,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 01:37:26,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 01:37:26,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 01:37:26,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 01:37:26,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 01:37:26,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 01:37:26,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 01:37:26,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 01:37:26,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 01:37:26,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 01:37:26,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 01:37:26,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-20 01:37:26,961 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 01:37:26,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 01:37:26,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 01:37:26,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 01:37:26,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 01:37:26,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 01:37:26,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 01:37:26,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 01:37:26,965 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 01:37:26,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 01:37:26,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 01:37:26,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 01:37:26,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 01:37:26,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 01:37:26,967 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 01:37:26,967 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 01:37:26,967 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 01:37:26,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 01:37:26,967 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 01:37:26,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 01:37:26,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 01:37:26,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 01:37:26,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 01:37:26,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:37:26,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 01:37:26,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 01:37:26,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 01:37:26,969 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 01:37:26,969 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 01:37:26,969 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 01:37:26,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 01:37:26,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 01:37:26,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 01:37:26,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef [2022-07-20 01:37:27,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 01:37:27,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 01:37:27,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 01:37:27,337 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 01:37:27,337 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 01:37:27,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2022-07-20 01:37:27,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c9a0396/8f939ba41e9d4673b5b2b7c0f3929144/FLAG7e5c4c52b [2022-07-20 01:37:28,242 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 01:37:28,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2022-07-20 01:37:28,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c9a0396/8f939ba41e9d4673b5b2b7c0f3929144/FLAG7e5c4c52b [2022-07-20 01:37:28,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c9a0396/8f939ba41e9d4673b5b2b7c0f3929144 [2022-07-20 01:37:28,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 01:37:28,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 01:37:28,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 01:37:28,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 01:37:28,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 01:37:28,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:37:28" (1/1) ... [2022-07-20 01:37:28,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2201692d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:28, skipping insertion in model container [2022-07-20 01:37:28,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:37:28" (1/1) ... [2022-07-20 01:37:28,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 01:37:28,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:37:30,704 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2022-07-20 01:37:30,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:37:30,784 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 01:37:30,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:37:31,224 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2022-07-20 01:37:31,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:37:31,242 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 01:37:31,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2022-07-20 01:37:31,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:37:31,816 INFO L208 MainTranslator]: Completed translation [2022-07-20 01:37:31,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:31 WrapperNode [2022-07-20 01:37:31,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 01:37:31,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 01:37:31,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 01:37:31,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 01:37:31,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:31" (1/1) ... [2022-07-20 01:37:31,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:31" (1/1) ... [2022-07-20 01:37:32,099 INFO L137 Inliner]: procedures = 288, calls = 5784, calls flagged for inlining = 107, calls inlined = 80, statements flattened = 6223 [2022-07-20 01:37:32,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 01:37:32,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 01:37:32,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 01:37:32,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 01:37:32,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:31" (1/1) ... [2022-07-20 01:37:32,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:31" (1/1) ... [2022-07-20 01:37:32,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:31" (1/1) ... [2022-07-20 01:37:32,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:31" (1/1) ... [2022-07-20 01:37:32,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:31" (1/1) ... [2022-07-20 01:37:32,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:31" (1/1) ... [2022-07-20 01:37:32,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:31" (1/1) ... [2022-07-20 01:37:32,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 01:37:32,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 01:37:32,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 01:37:32,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 01:37:32,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:31" (1/1) ... [2022-07-20 01:37:32,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:37:32,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 01:37:32,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 01:37:32,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 01:37:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue_status_stage [2022-07-20 01:37:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue_status_stage [2022-07-20 01:37:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-20 01:37:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue [2022-07-20 01:37:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue [2022-07-20 01:37:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure ep_bd_list_free [2022-07-20 01:37:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_bd_list_free [2022-07-20 01:37:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-20 01:37:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 01:37:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-20 01:37:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 01:37:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 01:37:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure init_ep [2022-07-20 01:37:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ep [2022-07-20 01:37:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 01:37:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 01:37:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-07-20 01:37:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-07-20 01:37:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-20 01:37:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-20 01:37:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_reset [2022-07-20 01:37:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_reset [2022-07-20 01:37:32,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 01:37:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 01:37:32,534 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-07-20 01:37:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-07-20 01:37:32,535 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_disable [2022-07-20 01:37:32,535 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_disable [2022-07-20 01:37:32,535 INFO L130 BoogieDeclarations]: Found specification of procedure usb_del_gadget_udc [2022-07-20 01:37:32,536 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_del_gadget_udc [2022-07-20 01:37:32,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-20 01:37:32,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-20 01:37:32,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 01:37:32,536 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 01:37:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2022-07-20 01:37:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2022-07-20 01:37:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 01:37:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 01:37:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2022-07-20 01:37:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2022-07-20 01:37:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_req_complete [2022-07-20 01:37:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_req_complete [2022-07-20 01:37:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_free_request [2022-07-20 01:37:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_free_request [2022-07-20 01:37:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure bd_add_to_bdi [2022-07-20 01:37:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_add_to_bdi [2022-07-20 01:37:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_remove [2022-07-20 01:37:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_remove [2022-07-20 01:37:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2022-07-20 01:37:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2022-07-20 01:37:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 01:37:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-20 01:37:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-20 01:37:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_stop [2022-07-20 01:37:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_stop [2022-07-20 01:37:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 01:37:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-20 01:37:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-20 01:37:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-20 01:37:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-20 01:37:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_isoc [2022-07-20 01:37:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_isoc [2022-07-20 01:37:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-20 01:37:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-20 01:37:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-20 01:37:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-20 01:37:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-20 01:37:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 01:37:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 01:37:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 01:37:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_free_ep [2022-07-20 01:37:32,545 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_free_ep [2022-07-20 01:37:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-20 01:37:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 01:37:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-20 01:37:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_notify_xfr [2022-07-20 01:37:32,545 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_notify_xfr [2022-07-20 01:37:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-20 01:37:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-20 01:37:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-20 01:37:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-20 01:37:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop_ep [2022-07-20 01:37:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop_ep [2022-07-20 01:37:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-20 01:37:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-20 01:37:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_set_stall [2022-07-20 01:37:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_set_stall [2022-07-20 01:37:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-20 01:37:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-20 01:37:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_map_request [2022-07-20 01:37:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_map_request [2022-07-20 01:37:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_free [2022-07-20 01:37:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_free [2022-07-20 01:37:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_dbg_bd_list [2022-07-20 01:37:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_dbg_bd_list [2022-07-20 01:37:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure ep_set_halt [2022-07-20 01:37:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_set_halt [2022-07-20 01:37:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-20 01:37:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-20 01:37:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_tbi [2022-07-20 01:37:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_tbi [2022-07-20 01:37:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-20 01:37:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-20 01:37:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_init [2022-07-20 01:37:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_init [2022-07-20 01:37:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_config_ep [2022-07-20 01:37:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_config_ep [2022-07-20 01:37:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_enable [2022-07-20 01:37:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_enable [2022-07-20 01:37:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_queue_xfr [2022-07-20 01:37:32,553 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_queue_xfr [2022-07-20 01:37:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_hw_exit [2022-07-20 01:37:32,555 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_hw_exit [2022-07-20 01:37:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-20 01:37:32,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-20 01:37:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-20 01:37:32,557 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-20 01:37:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_disable [2022-07-20 01:37:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_disable [2022-07-20 01:37:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-07-20 01:37:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-07-20 01:37:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 01:37:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 01:37:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-20 01:37:32,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-20 01:37:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 01:37:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2022-07-20 01:37:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-20 01:37:32,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-20 01:37:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-07-20 01:37:32,565 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-07-20 01:37:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 01:37:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_dequeue [2022-07-20 01:37:32,565 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_dequeue [2022-07-20 01:37:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_state [2022-07-20 01:37:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_state [2022-07-20 01:37:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-20 01:37:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-20 01:37:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 01:37:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_start [2022-07-20 01:37:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_start [2022-07-20 01:37:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure poll_oip [2022-07-20 01:37:32,567 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_oip [2022-07-20 01:37:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-07-20 01:37:32,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-07-20 01:37:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop [2022-07-20 01:37:32,567 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop [2022-07-20 01:37:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_softconn [2022-07-20 01:37:32,567 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_softconn [2022-07-20 01:37:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_run [2022-07-20 01:37:32,568 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_run [2022-07-20 01:37:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2022-07-20 01:37:32,568 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2022-07-20 01:37:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_submit_cmd [2022-07-20 01:37:32,568 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_submit_cmd [2022-07-20 01:37:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_wakeup [2022-07-20 01:37:32,568 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_wakeup [2022-07-20 01:37:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-20 01:37:32,569 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-20 01:37:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure find_end_bdi [2022-07-20 01:37:32,569 INFO L138 BoogieDeclarations]: Found implementation of procedure find_end_bdi [2022-07-20 01:37:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_bd [2022-07-20 01:37:32,569 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_bd [2022-07-20 01:37:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_writel [2022-07-20 01:37:32,570 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_writel [2022-07-20 01:37:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 01:37:32,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 01:37:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure chain_table [2022-07-20 01:37:32,570 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_table [2022-07-20 01:37:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_readl [2022-07-20 01:37:32,570 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_readl [2022-07-20 01:37:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_enable [2022-07-20 01:37:32,571 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_enable [2022-07-20 01:37:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-20 01:37:32,571 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-20 01:37:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_probe [2022-07-20 01:37:32,571 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_probe [2022-07-20 01:37:33,340 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 01:37:33,343 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 01:37:41,167 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 01:38:40,527 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 01:38:40,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 01:38:40,544 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 01:38:40,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:38:40 BoogieIcfgContainer [2022-07-20 01:38:40,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 01:38:40,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 01:38:40,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 01:38:40,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 01:38:40,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:37:28" (1/3) ... [2022-07-20 01:38:40,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7621a297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:38:40, skipping insertion in model container [2022-07-20 01:38:40,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:37:31" (2/3) ... [2022-07-20 01:38:40,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7621a297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:38:40, skipping insertion in model container [2022-07-20 01:38:40,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:38:40" (3/3) ... [2022-07-20 01:38:40,555 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2022-07-20 01:38:40,569 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 01:38:40,569 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 01:38:40,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 01:38:40,645 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@106ea956, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a7ae4b2 [2022-07-20 01:38:40,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 01:38:40,655 INFO L276 IsEmpty]: Start isEmpty. Operand has 1459 states, 1027 states have (on average 1.3320350535540408) internal successors, (1368), 1045 states have internal predecessors, (1368), 353 states have call successors, (353), 78 states have call predecessors, (353), 77 states have return successors, (348), 348 states have call predecessors, (348), 348 states have call successors, (348) [2022-07-20 01:38:40,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-20 01:38:40,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:38:40,685 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:38:40,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:38:40,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:38:40,691 INFO L85 PathProgramCache]: Analyzing trace with hash -171950750, now seen corresponding path program 1 times [2022-07-20 01:38:40,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:38:40,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891990945] [2022-07-20 01:38:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:38:40,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:38:40,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:38:40,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:38:40,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 01:38:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:42,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 3365 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:38:42,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:38:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-20 01:38:42,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:38:42,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:38:42,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891990945] [2022-07-20 01:38:42,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891990945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:38:42,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:38:42,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:38:42,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33191294] [2022-07-20 01:38:42,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:38:42,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:38:42,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:38:42,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:38:42,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:38:42,217 INFO L87 Difference]: Start difference. First operand has 1459 states, 1027 states have (on average 1.3320350535540408) internal successors, (1368), 1045 states have internal predecessors, (1368), 353 states have call successors, (353), 78 states have call predecessors, (353), 77 states have return successors, (348), 348 states have call predecessors, (348), 348 states have call successors, (348) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-20 01:38:43,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:38:43,046 INFO L93 Difference]: Finished difference Result 3953 states and 5642 transitions. [2022-07-20 01:38:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:38:43,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2022-07-20 01:38:43,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:38:43,088 INFO L225 Difference]: With dead ends: 3953 [2022-07-20 01:38:43,089 INFO L226 Difference]: Without dead ends: 2471 [2022-07-20 01:38:43,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:38:43,111 INFO L413 NwaCegarLoop]: 2405 mSDtfsCounter, 1437 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 4442 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 01:38:43,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 4442 Invalid, 26 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 01:38:43,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2022-07-20 01:38:43,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2466. [2022-07-20 01:38:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 1727 states have (on average 1.3103647944412276) internal successors, (2263), 1748 states have internal predecessors, (2263), 601 states have call successors, (601), 138 states have call predecessors, (601), 137 states have return successors, (600), 599 states have call predecessors, (600), 600 states have call successors, (600) [2022-07-20 01:38:43,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3464 transitions. [2022-07-20 01:38:43,362 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3464 transitions. Word has length 72 [2022-07-20 01:38:43,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:38:43,362 INFO L495 AbstractCegarLoop]: Abstraction has 2466 states and 3464 transitions. [2022-07-20 01:38:43,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-20 01:38:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3464 transitions. [2022-07-20 01:38:43,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-20 01:38:43,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:38:43,375 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:38:43,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-20 01:38:43,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:38:43,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:38:43,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:38:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1774106033, now seen corresponding path program 1 times [2022-07-20 01:38:43,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:38:43,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952618877] [2022-07-20 01:38:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:38:43,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:38:43,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:38:43,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:38:43,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 01:38:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:45,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 3596 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 01:38:45,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:38:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-07-20 01:38:45,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:38:45,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:38:45,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952618877] [2022-07-20 01:38:45,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952618877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:38:45,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:38:45,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:38:45,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190060836] [2022-07-20 01:38:45,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:38:45,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:38:45,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:38:45,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:38:45,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:38:45,357 INFO L87 Difference]: Start difference. First operand 2466 states and 3464 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-20 01:38:45,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:38:45,961 INFO L93 Difference]: Finished difference Result 4940 states and 6961 transitions. [2022-07-20 01:38:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:38:45,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 152 [2022-07-20 01:38:45,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:38:45,976 INFO L225 Difference]: With dead ends: 4940 [2022-07-20 01:38:45,977 INFO L226 Difference]: Without dead ends: 2472 [2022-07-20 01:38:45,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-20 01:38:45,986 INFO L413 NwaCegarLoop]: 2035 mSDtfsCounter, 6 mSDsluCounter, 8117 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10152 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 01:38:45,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 10152 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 01:38:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-07-20 01:38:46,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2472. [2022-07-20 01:38:46,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 1731 states have (on average 1.3108030040439052) internal successors, (2269), 1754 states have internal predecessors, (2269), 601 states have call successors, (601), 138 states have call predecessors, (601), 139 states have return successors, (604), 599 states have call predecessors, (604), 600 states have call successors, (604) [2022-07-20 01:38:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3474 transitions. [2022-07-20 01:38:46,094 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3474 transitions. Word has length 152 [2022-07-20 01:38:46,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:38:46,095 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 3474 transitions. [2022-07-20 01:38:46,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-20 01:38:46,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3474 transitions. [2022-07-20 01:38:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-20 01:38:46,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:38:46,100 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:38:46,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 01:38:46,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:38:46,320 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:38:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:38:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1819481269, now seen corresponding path program 1 times [2022-07-20 01:38:46,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:38:46,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090174838] [2022-07-20 01:38:46,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:38:46,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:38:46,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:38:46,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:38:46,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 01:38:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:47,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 3629 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 01:38:47,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:38:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-07-20 01:38:47,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:38:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-20 01:38:48,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:38:48,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090174838] [2022-07-20 01:38:48,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090174838] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:38:48,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:38:48,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-20 01:38:48,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769227449] [2022-07-20 01:38:48,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:38:48,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 01:38:48,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:38:48,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 01:38:48,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-20 01:38:48,741 INFO L87 Difference]: Start difference. First operand 2472 states and 3474 transitions. Second operand has 11 states, 9 states have (on average 8.555555555555555) internal successors, (77), 11 states have internal predecessors, (77), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-20 01:38:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:38:49,773 INFO L93 Difference]: Finished difference Result 4952 states and 6981 transitions. [2022-07-20 01:38:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 01:38:49,774 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.555555555555555) internal successors, (77), 11 states have internal predecessors, (77), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 155 [2022-07-20 01:38:49,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:38:49,793 INFO L225 Difference]: With dead ends: 4952 [2022-07-20 01:38:49,793 INFO L226 Difference]: Without dead ends: 2478 [2022-07-20 01:38:49,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-20 01:38:49,807 INFO L413 NwaCegarLoop]: 2036 mSDtfsCounter, 17 mSDsluCounter, 14207 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 16243 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 01:38:49,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 16243 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 01:38:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2022-07-20 01:38:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2474. [2022-07-20 01:38:49,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 1733 states have (on average 1.311598384304674) internal successors, (2273), 1756 states have internal predecessors, (2273), 601 states have call successors, (601), 138 states have call predecessors, (601), 139 states have return successors, (604), 599 states have call predecessors, (604), 600 states have call successors, (604) [2022-07-20 01:38:49,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3478 transitions. [2022-07-20 01:38:49,926 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3478 transitions. Word has length 155 [2022-07-20 01:38:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:38:49,928 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 3478 transitions. [2022-07-20 01:38:49,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.555555555555555) internal successors, (77), 11 states have internal predecessors, (77), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-20 01:38:49,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3478 transitions. [2022-07-20 01:38:49,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-20 01:38:49,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:38:49,936 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:38:49,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 01:38:50,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:38:50,151 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:38:50,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:38:50,151 INFO L85 PathProgramCache]: Analyzing trace with hash 892030863, now seen corresponding path program 2 times [2022-07-20 01:38:50,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:38:50,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352268362] [2022-07-20 01:38:50,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:38:50,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:38:50,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:38:50,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:38:50,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 01:38:51,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:38:51,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:38:51,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:38:51,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:38:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-20 01:38:52,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:38:52,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:38:52,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352268362] [2022-07-20 01:38:52,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352268362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:38:52,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:38:52,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:38:52,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872067495] [2022-07-20 01:38:52,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:38:52,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:38:52,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:38:52,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:38:52,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:38:52,385 INFO L87 Difference]: Start difference. First operand 2474 states and 3478 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-20 01:38:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:38:52,531 INFO L93 Difference]: Finished difference Result 4431 states and 6244 transitions. [2022-07-20 01:38:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:38:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 158 [2022-07-20 01:38:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:38:52,558 INFO L225 Difference]: With dead ends: 4431 [2022-07-20 01:38:52,558 INFO L226 Difference]: Without dead ends: 4428 [2022-07-20 01:38:52,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:38:52,563 INFO L413 NwaCegarLoop]: 2498 mSDtfsCounter, 1425 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 4502 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:38:52,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 4502 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 01:38:52,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2022-07-20 01:38:52,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4385. [2022-07-20 01:38:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 3075 states have (on average 1.310569105691057) internal successors, (4030), 3124 states have internal predecessors, (4030), 1060 states have call successors, (1060), 250 states have call predecessors, (1060), 249 states have return successors, (1080), 1044 states have call predecessors, (1080), 1059 states have call successors, (1080) [2022-07-20 01:38:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 6170 transitions. [2022-07-20 01:38:52,740 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 6170 transitions. Word has length 158 [2022-07-20 01:38:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:38:52,741 INFO L495 AbstractCegarLoop]: Abstraction has 4385 states and 6170 transitions. [2022-07-20 01:38:52,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-20 01:38:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 6170 transitions. [2022-07-20 01:38:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-20 01:38:52,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:38:52,750 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:38:52,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 01:38:52,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:38:52,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:38:52,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:38:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2031371136, now seen corresponding path program 1 times [2022-07-20 01:38:52,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:38:52,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876030995] [2022-07-20 01:38:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:38:52,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:38:52,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:38:52,975 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:38:52,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 01:38:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:54,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 3979 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 01:38:54,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:38:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-20 01:38:54,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:38:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-20 01:38:55,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:38:55,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876030995] [2022-07-20 01:38:55,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876030995] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:38:55,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:38:55,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-20 01:38:55,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507928259] [2022-07-20 01:38:55,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:38:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 01:38:55,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:38:55,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 01:38:55,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-20 01:38:55,641 INFO L87 Difference]: Start difference. First operand 4385 states and 6170 transitions. Second operand has 13 states, 11 states have (on average 10.090909090909092) internal successors, (111), 13 states have internal predecessors, (111), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-20 01:38:57,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:38:57,107 INFO L93 Difference]: Finished difference Result 8798 states and 12421 transitions. [2022-07-20 01:38:57,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 01:38:57,109 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.090909090909092) internal successors, (111), 13 states have internal predecessors, (111), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 200 [2022-07-20 01:38:57,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:38:57,137 INFO L225 Difference]: With dead ends: 8798 [2022-07-20 01:38:57,137 INFO L226 Difference]: Without dead ends: 4405 [2022-07-20 01:38:57,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-07-20 01:38:57,158 INFO L413 NwaCegarLoop]: 2037 mSDtfsCounter, 15 mSDsluCounter, 18275 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 20312 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:38:57,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 20312 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-20 01:38:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4405 states. [2022-07-20 01:38:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4405 to 4389. [2022-07-20 01:38:57,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4389 states, 3079 states have (on average 1.3114647612861319) internal successors, (4038), 3128 states have internal predecessors, (4038), 1060 states have call successors, (1060), 250 states have call predecessors, (1060), 249 states have return successors, (1080), 1044 states have call predecessors, (1080), 1059 states have call successors, (1080) [2022-07-20 01:38:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 6178 transitions. [2022-07-20 01:38:57,342 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 6178 transitions. Word has length 200 [2022-07-20 01:38:57,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:38:57,342 INFO L495 AbstractCegarLoop]: Abstraction has 4389 states and 6178 transitions. [2022-07-20 01:38:57,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.090909090909092) internal successors, (111), 13 states have internal predecessors, (111), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-20 01:38:57,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 6178 transitions. [2022-07-20 01:38:57,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-20 01:38:57,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:38:57,353 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:38:57,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 01:38:57,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:38:57,567 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:38:57,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:38:57,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1610400742, now seen corresponding path program 2 times [2022-07-20 01:38:57,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:38:57,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519395738] [2022-07-20 01:38:57,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:38:57,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:38:57,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:38:57,576 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:38:57,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 01:38:58,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:38:58,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:38:58,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 3397 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:38:58,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:38:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-07-20 01:38:58,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:38:58,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:38:58,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519395738] [2022-07-20 01:38:58,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519395738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:38:58,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:38:58,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:38:58,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773215891] [2022-07-20 01:38:58,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:38:58,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:38:58,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:38:58,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:38:59,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:38:59,000 INFO L87 Difference]: Start difference. First operand 4389 states and 6178 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:38:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:38:59,393 INFO L93 Difference]: Finished difference Result 8776 states and 12359 transitions. [2022-07-20 01:38:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:38:59,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 203 [2022-07-20 01:38:59,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:38:59,421 INFO L225 Difference]: With dead ends: 8776 [2022-07-20 01:38:59,421 INFO L226 Difference]: Without dead ends: 4391 [2022-07-20 01:38:59,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:38:59,441 INFO L413 NwaCegarLoop]: 2044 mSDtfsCounter, 0 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 01:38:59,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 01:38:59,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4391 states. [2022-07-20 01:38:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4391 to 4391. [2022-07-20 01:38:59,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 3081 states have (on average 1.3112625770853619) internal successors, (4040), 3130 states have internal predecessors, (4040), 1060 states have call successors, (1060), 250 states have call predecessors, (1060), 249 states have return successors, (1080), 1044 states have call predecessors, (1080), 1059 states have call successors, (1080) [2022-07-20 01:38:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6180 transitions. [2022-07-20 01:38:59,605 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6180 transitions. Word has length 203 [2022-07-20 01:38:59,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:38:59,606 INFO L495 AbstractCegarLoop]: Abstraction has 4391 states and 6180 transitions. [2022-07-20 01:38:59,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:38:59,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6180 transitions. [2022-07-20 01:38:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-20 01:38:59,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:38:59,615 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:38:59,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 01:38:59,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:38:59,835 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:38:59,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:38:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash -756293852, now seen corresponding path program 1 times [2022-07-20 01:38:59,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:38:59,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991471950] [2022-07-20 01:38:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:38:59,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:38:59,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:38:59,841 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:38:59,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 01:39:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:01,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 4014 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 01:39:01,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-07-20 01:39:01,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:39:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-07-20 01:39:03,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:03,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991471950] [2022-07-20 01:39:03,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991471950] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:39:03,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:39:03,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-20 01:39:03,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524580012] [2022-07-20 01:39:03,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:39:03,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-20 01:39:03,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:03,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-20 01:39:03,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-20 01:39:03,079 INFO L87 Difference]: Start difference. First operand 4391 states and 6180 transitions. Second operand has 15 states, 13 states have (on average 8.692307692307692) internal successors, (113), 15 states have internal predecessors, (113), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-20 01:39:04,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:04,683 INFO L93 Difference]: Finished difference Result 8818 states and 12453 transitions. [2022-07-20 01:39:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 01:39:04,684 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 8.692307692307692) internal successors, (113), 15 states have internal predecessors, (113), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 203 [2022-07-20 01:39:04,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:04,712 INFO L225 Difference]: With dead ends: 8818 [2022-07-20 01:39:04,712 INFO L226 Difference]: Without dead ends: 4419 [2022-07-20 01:39:04,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-20 01:39:04,734 INFO L413 NwaCegarLoop]: 2038 mSDtfsCounter, 32 mSDsluCounter, 18281 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 20319 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:04,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 20319 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-20 01:39:04,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2022-07-20 01:39:04,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 4395. [2022-07-20 01:39:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 3085 states have (on average 1.3121555915721232) internal successors, (4048), 3134 states have internal predecessors, (4048), 1060 states have call successors, (1060), 250 states have call predecessors, (1060), 249 states have return successors, (1080), 1044 states have call predecessors, (1080), 1059 states have call successors, (1080) [2022-07-20 01:39:04,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 6188 transitions. [2022-07-20 01:39:04,929 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 6188 transitions. Word has length 203 [2022-07-20 01:39:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:04,930 INFO L495 AbstractCegarLoop]: Abstraction has 4395 states and 6188 transitions. [2022-07-20 01:39:04,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 8.692307692307692) internal successors, (113), 15 states have internal predecessors, (113), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-20 01:39:04,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 6188 transitions. [2022-07-20 01:39:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-20 01:39:04,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:04,939 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:39:04,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-20 01:39:05,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:05,168 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:05,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:05,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1580850178, now seen corresponding path program 2 times [2022-07-20 01:39:05,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:05,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246225939] [2022-07-20 01:39:05,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:39:05,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:05,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:05,172 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:39:05,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 01:39:06,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:39:06,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:39:06,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:39:06,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-20 01:39:06,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:06,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:06,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246225939] [2022-07-20 01:39:06,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246225939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:06,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:06,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:39:06,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477537033] [2022-07-20 01:39:06,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:06,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:39:06,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:06,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:39:06,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:39:06,333 INFO L87 Difference]: Start difference. First operand 4395 states and 6188 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:39:06,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:06,528 INFO L93 Difference]: Finished difference Result 8788 states and 12378 transitions. [2022-07-20 01:39:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:39:06,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 206 [2022-07-20 01:39:06,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:06,562 INFO L225 Difference]: With dead ends: 8788 [2022-07-20 01:39:06,562 INFO L226 Difference]: Without dead ends: 4397 [2022-07-20 01:39:06,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:39:06,579 INFO L413 NwaCegarLoop]: 2044 mSDtfsCounter, 0 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:06,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 01:39:06,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2022-07-20 01:39:06,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 4397. [2022-07-20 01:39:06,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4397 states, 3087 states have (on average 1.3119533527696794) internal successors, (4050), 3136 states have internal predecessors, (4050), 1060 states have call successors, (1060), 250 states have call predecessors, (1060), 249 states have return successors, (1080), 1044 states have call predecessors, (1080), 1059 states have call successors, (1080) [2022-07-20 01:39:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6190 transitions. [2022-07-20 01:39:06,751 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6190 transitions. Word has length 206 [2022-07-20 01:39:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:06,752 INFO L495 AbstractCegarLoop]: Abstraction has 4397 states and 6190 transitions. [2022-07-20 01:39:06,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:39:06,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6190 transitions. [2022-07-20 01:39:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-20 01:39:06,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:06,762 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:39:06,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-20 01:39:06,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:06,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:06,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:06,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1332703684, now seen corresponding path program 1 times [2022-07-20 01:39:06,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:06,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446421156] [2022-07-20 01:39:06,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:06,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:06,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:06,982 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:39:06,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 01:39:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:08,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 01:39:08,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-20 01:39:08,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:08,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:08,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446421156] [2022-07-20 01:39:08,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446421156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:08,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:08,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:39:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748105396] [2022-07-20 01:39:08,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:08,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:39:08,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:39:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:39:08,995 INFO L87 Difference]: Start difference. First operand 4397 states and 6190 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-20 01:39:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:10,908 INFO L93 Difference]: Finished difference Result 8792 states and 12380 transitions. [2022-07-20 01:39:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:39:10,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 206 [2022-07-20 01:39:10,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:10,928 INFO L225 Difference]: With dead ends: 8792 [2022-07-20 01:39:10,928 INFO L226 Difference]: Without dead ends: 4399 [2022-07-20 01:39:10,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:39:10,943 INFO L413 NwaCegarLoop]: 1952 mSDtfsCounter, 5 mSDsluCounter, 7702 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9654 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:10,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9654 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-20 01:39:10,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2022-07-20 01:39:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 4399. [2022-07-20 01:39:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 3088 states have (on average 1.3115284974093264) internal successors, (4050), 3138 states have internal predecessors, (4050), 1060 states have call successors, (1060), 250 states have call predecessors, (1060), 250 states have return successors, (1081), 1044 states have call predecessors, (1081), 1059 states have call successors, (1081) [2022-07-20 01:39:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 6191 transitions. [2022-07-20 01:39:11,079 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 6191 transitions. Word has length 206 [2022-07-20 01:39:11,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:11,081 INFO L495 AbstractCegarLoop]: Abstraction has 4399 states and 6191 transitions. [2022-07-20 01:39:11,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-20 01:39:11,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 6191 transitions. [2022-07-20 01:39:11,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-20 01:39:11,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:11,089 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:39:11,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 01:39:11,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:11,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:11,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2118258110, now seen corresponding path program 1 times [2022-07-20 01:39:11,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:11,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956848057] [2022-07-20 01:39:11,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:11,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:11,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:11,309 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:39:11,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 01:39:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:13,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-20 01:39:13,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-07-20 01:39:13,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:13,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:13,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956848057] [2022-07-20 01:39:13,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956848057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:13,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:13,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:39:13,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452997446] [2022-07-20 01:39:13,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:13,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:39:13,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:13,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:39:13,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:39:13,445 INFO L87 Difference]: Start difference. First operand 4399 states and 6191 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-20 01:39:15,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:15,583 INFO L93 Difference]: Finished difference Result 8794 states and 12389 transitions. [2022-07-20 01:39:15,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:39:15,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 206 [2022-07-20 01:39:15,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:15,600 INFO L225 Difference]: With dead ends: 8794 [2022-07-20 01:39:15,600 INFO L226 Difference]: Without dead ends: 4399 [2022-07-20 01:39:15,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:39:15,610 INFO L413 NwaCegarLoop]: 1949 mSDtfsCounter, 43 mSDsluCounter, 7642 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 9591 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:15,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 9591 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-20 01:39:15,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2022-07-20 01:39:15,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 4399. [2022-07-20 01:39:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 3088 states have (on average 1.3102331606217616) internal successors, (4046), 3138 states have internal predecessors, (4046), 1060 states have call successors, (1060), 250 states have call predecessors, (1060), 250 states have return successors, (1081), 1044 states have call predecessors, (1081), 1059 states have call successors, (1081) [2022-07-20 01:39:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 6187 transitions. [2022-07-20 01:39:15,767 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 6187 transitions. Word has length 206 [2022-07-20 01:39:15,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:15,768 INFO L495 AbstractCegarLoop]: Abstraction has 4399 states and 6187 transitions. [2022-07-20 01:39:15,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-20 01:39:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 6187 transitions. [2022-07-20 01:39:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-20 01:39:15,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:15,776 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:39:15,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 01:39:15,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:15,991 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:15,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:15,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1957854468, now seen corresponding path program 1 times [2022-07-20 01:39:15,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:15,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182311025] [2022-07-20 01:39:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:15,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:15,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:15,997 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:39:15,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-20 01:39:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:18,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-20 01:39:18,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-20 01:39:18,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:18,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:18,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182311025] [2022-07-20 01:39:18,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182311025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:18,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:18,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:39:18,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294053280] [2022-07-20 01:39:18,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:18,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:39:18,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:39:18,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:39:18,299 INFO L87 Difference]: Start difference. First operand 4399 states and 6187 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:39:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:20,161 INFO L93 Difference]: Finished difference Result 8794 states and 12381 transitions. [2022-07-20 01:39:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:39:20,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 206 [2022-07-20 01:39:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:20,176 INFO L225 Difference]: With dead ends: 8794 [2022-07-20 01:39:20,177 INFO L226 Difference]: Without dead ends: 4399 [2022-07-20 01:39:20,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:39:20,190 INFO L413 NwaCegarLoop]: 1948 mSDtfsCounter, 35 mSDsluCounter, 7645 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 9593 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:20,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 9593 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-20 01:39:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2022-07-20 01:39:20,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 4399. [2022-07-20 01:39:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 3088 states have (on average 1.3089378238341969) internal successors, (4042), 3138 states have internal predecessors, (4042), 1060 states have call successors, (1060), 250 states have call predecessors, (1060), 250 states have return successors, (1081), 1044 states have call predecessors, (1081), 1059 states have call successors, (1081) [2022-07-20 01:39:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 6183 transitions. [2022-07-20 01:39:20,321 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 6183 transitions. Word has length 206 [2022-07-20 01:39:20,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:20,321 INFO L495 AbstractCegarLoop]: Abstraction has 4399 states and 6183 transitions. [2022-07-20 01:39:20,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 01:39:20,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 6183 transitions. [2022-07-20 01:39:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-20 01:39:20,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:20,329 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:39:20,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-20 01:39:20,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:20,547 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:20,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:20,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1527766202, now seen corresponding path program 1 times [2022-07-20 01:39:20,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:20,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471448829] [2022-07-20 01:39:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:20,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:20,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:20,552 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:39:20,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-20 01:39:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:22,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 01:39:22,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-20 01:39:22,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:22,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:22,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471448829] [2022-07-20 01:39:22,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471448829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:22,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:22,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:39:22,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420924379] [2022-07-20 01:39:22,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:22,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:39:22,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:22,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:39:22,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:39:22,803 INFO L87 Difference]: Start difference. First operand 4399 states and 6183 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-20 01:39:23,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:23,034 INFO L93 Difference]: Finished difference Result 4442 states and 6227 transitions. [2022-07-20 01:39:23,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:39:23,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 206 [2022-07-20 01:39:23,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:23,053 INFO L225 Difference]: With dead ends: 4442 [2022-07-20 01:39:23,053 INFO L226 Difference]: Without dead ends: 4439 [2022-07-20 01:39:23,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-20 01:39:23,057 INFO L413 NwaCegarLoop]: 2046 mSDtfsCounter, 10 mSDsluCounter, 8157 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10203 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:23,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 10203 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 01:39:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2022-07-20 01:39:23,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 4439. [2022-07-20 01:39:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4439 states, 3112 states have (on average 1.306555269922879) internal successors, (4066), 3162 states have internal predecessors, (4066), 1068 states have call successors, (1068), 258 states have call predecessors, (1068), 258 states have return successors, (1089), 1052 states have call predecessors, (1089), 1067 states have call successors, (1089) [2022-07-20 01:39:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4439 states to 4439 states and 6223 transitions. [2022-07-20 01:39:23,234 INFO L78 Accepts]: Start accepts. Automaton has 4439 states and 6223 transitions. Word has length 206 [2022-07-20 01:39:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:23,234 INFO L495 AbstractCegarLoop]: Abstraction has 4439 states and 6223 transitions. [2022-07-20 01:39:23,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-20 01:39:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4439 states and 6223 transitions. [2022-07-20 01:39:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-20 01:39:23,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:23,245 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-20 01:39:23,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-20 01:39:23,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:23,460 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:23,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:23,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1888062237, now seen corresponding path program 1 times [2022-07-20 01:39:23,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:23,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902128055] [2022-07-20 01:39:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:23,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:23,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:23,466 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:39:23,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-20 01:39:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:26,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 4150 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-20 01:39:26,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-20 01:39:26,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:26,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:26,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902128055] [2022-07-20 01:39:26,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902128055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:26,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:26,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 01:39:26,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125915349] [2022-07-20 01:39:26,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:26,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 01:39:26,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 01:39:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:39:26,300 INFO L87 Difference]: Start difference. First operand 4439 states and 6223 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-20 01:39:26,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:26,554 INFO L93 Difference]: Finished difference Result 8914 states and 12511 transitions. [2022-07-20 01:39:26,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 01:39:26,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) Word has length 239 [2022-07-20 01:39:26,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:26,571 INFO L225 Difference]: With dead ends: 8914 [2022-07-20 01:39:26,572 INFO L226 Difference]: Without dead ends: 4479 [2022-07-20 01:39:26,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:39:26,584 INFO L413 NwaCegarLoop]: 2039 mSDtfsCounter, 0 mSDsluCounter, 10184 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12223 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:26,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12223 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 01:39:26,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4479 states. [2022-07-20 01:39:26,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4479 to 4467. [2022-07-20 01:39:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 3132 states have (on average 1.3045977011494252) internal successors, (4086), 3182 states have internal predecessors, (4086), 1068 states have call successors, (1068), 258 states have call predecessors, (1068), 266 states have return successors, (1109), 1060 states have call predecessors, (1109), 1067 states have call successors, (1109) [2022-07-20 01:39:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6263 transitions. [2022-07-20 01:39:26,718 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6263 transitions. Word has length 239 [2022-07-20 01:39:26,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:26,720 INFO L495 AbstractCegarLoop]: Abstraction has 4467 states and 6263 transitions. [2022-07-20 01:39:26,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-20 01:39:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6263 transitions. [2022-07-20 01:39:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-07-20 01:39:26,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:26,732 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 9, 9, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-20 01:39:26,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-20 01:39:26,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:26,948 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:26,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:26,948 INFO L85 PathProgramCache]: Analyzing trace with hash 424726677, now seen corresponding path program 1 times [2022-07-20 01:39:26,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:26,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076797269] [2022-07-20 01:39:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:26,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:26,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:26,953 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:39:26,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-20 01:39:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:29,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 4262 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 01:39:29,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-07-20 01:39:29,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:29,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:29,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076797269] [2022-07-20 01:39:29,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076797269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:29,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:29,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 01:39:29,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786984463] [2022-07-20 01:39:29,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:29,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:39:29,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:29,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:39:29,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:39:29,629 INFO L87 Difference]: Start difference. First operand 4467 states and 6263 transitions. Second operand has 5 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-07-20 01:39:29,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:29,766 INFO L93 Difference]: Finished difference Result 4574 states and 6420 transitions. [2022-07-20 01:39:29,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 01:39:29,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 289 [2022-07-20 01:39:29,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:29,783 INFO L225 Difference]: With dead ends: 4574 [2022-07-20 01:39:29,783 INFO L226 Difference]: Without dead ends: 4571 [2022-07-20 01:39:29,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:39:29,787 INFO L413 NwaCegarLoop]: 2076 mSDtfsCounter, 35 mSDsluCounter, 6174 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 8250 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:29,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 8250 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 01:39:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2022-07-20 01:39:29,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 4483. [2022-07-20 01:39:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4483 states, 3144 states have (on average 1.3034351145038168) internal successors, (4098), 3194 states have internal predecessors, (4098), 1068 states have call successors, (1068), 262 states have call predecessors, (1068), 270 states have return successors, (1109), 1060 states have call predecessors, (1109), 1067 states have call successors, (1109) [2022-07-20 01:39:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 6275 transitions. [2022-07-20 01:39:29,935 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 6275 transitions. Word has length 289 [2022-07-20 01:39:29,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:29,936 INFO L495 AbstractCegarLoop]: Abstraction has 4483 states and 6275 transitions. [2022-07-20 01:39:29,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-07-20 01:39:29,937 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 6275 transitions. [2022-07-20 01:39:29,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-07-20 01:39:29,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:29,956 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:39:30,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-20 01:39:30,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:30,172 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:30,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:30,172 INFO L85 PathProgramCache]: Analyzing trace with hash 481023157, now seen corresponding path program 1 times [2022-07-20 01:39:30,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:30,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834607215] [2022-07-20 01:39:30,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:30,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:30,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:30,177 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:39:30,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-20 01:39:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:32,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 4863 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:39:32,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-07-20 01:39:32,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:32,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:32,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834607215] [2022-07-20 01:39:32,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834607215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:32,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:32,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:39:32,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915955741] [2022-07-20 01:39:32,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:32,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:39:32,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:32,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:39:32,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:39:32,729 INFO L87 Difference]: Start difference. First operand 4483 states and 6275 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-20 01:39:33,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:33,075 INFO L93 Difference]: Finished difference Result 11440 states and 15991 transitions. [2022-07-20 01:39:33,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:39:33,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 356 [2022-07-20 01:39:33,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:33,098 INFO L225 Difference]: With dead ends: 11440 [2022-07-20 01:39:33,099 INFO L226 Difference]: Without dead ends: 6955 [2022-07-20 01:39:33,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:39:33,110 INFO L413 NwaCegarLoop]: 3527 mSDtfsCounter, 1987 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 5065 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:33,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 5065 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 01:39:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6955 states. [2022-07-20 01:39:33,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6955 to 6946. [2022-07-20 01:39:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 4908 states have (on average 1.311124694376528) internal successors, (6435), 4992 states have internal predecessors, (6435), 1597 states have call successors, (1597), 432 states have call predecessors, (1597), 440 states have return successors, (1653), 1578 states have call predecessors, (1653), 1596 states have call successors, (1653) [2022-07-20 01:39:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 9685 transitions. [2022-07-20 01:39:33,395 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 9685 transitions. Word has length 356 [2022-07-20 01:39:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:33,396 INFO L495 AbstractCegarLoop]: Abstraction has 6946 states and 9685 transitions. [2022-07-20 01:39:33,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-20 01:39:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 9685 transitions. [2022-07-20 01:39:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-07-20 01:39:33,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:33,419 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:39:33,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-20 01:39:33,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:33,640 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash 666460051, now seen corresponding path program 1 times [2022-07-20 01:39:33,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:33,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148387157] [2022-07-20 01:39:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:33,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:33,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:33,646 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) [2022-07-20 01:39:33,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-20 01:39:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:35,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 4863 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:39:35,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-07-20 01:39:36,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:36,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:36,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148387157] [2022-07-20 01:39:36,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148387157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:36,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:36,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:39:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389219307] [2022-07-20 01:39:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:36,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:39:36,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:36,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:39:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:39:36,287 INFO L87 Difference]: Start difference. First operand 6946 states and 9685 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-20 01:39:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:36,533 INFO L93 Difference]: Finished difference Result 18281 states and 25488 transitions. [2022-07-20 01:39:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:39:36,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 356 [2022-07-20 01:39:36,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:36,578 INFO L225 Difference]: With dead ends: 18281 [2022-07-20 01:39:36,579 INFO L226 Difference]: Without dead ends: 11339 [2022-07-20 01:39:36,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:39:36,605 INFO L413 NwaCegarLoop]: 3399 mSDtfsCounter, 1952 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 5430 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:36,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1952 Valid, 5430 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 01:39:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11339 states. [2022-07-20 01:39:36,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11339 to 11336. [2022-07-20 01:39:36,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11336 states, 8000 states have (on average 1.307875) internal successors, (10463), 8131 states have internal predecessors, (10463), 2623 states have call successors, (2623), 695 states have call predecessors, (2623), 712 states have return successors, (2713), 2597 states have call predecessors, (2713), 2622 states have call successors, (2713) [2022-07-20 01:39:37,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11336 states to 11336 states and 15799 transitions. [2022-07-20 01:39:37,033 INFO L78 Accepts]: Start accepts. Automaton has 11336 states and 15799 transitions. Word has length 356 [2022-07-20 01:39:37,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:37,034 INFO L495 AbstractCegarLoop]: Abstraction has 11336 states and 15799 transitions. [2022-07-20 01:39:37,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-20 01:39:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 11336 states and 15799 transitions. [2022-07-20 01:39:37,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-07-20 01:39:37,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:37,071 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:39:37,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-20 01:39:37,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:37,288 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:37,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:37,288 INFO L85 PathProgramCache]: Analyzing trace with hash -775352991, now seen corresponding path program 1 times [2022-07-20 01:39:37,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:37,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170071403] [2022-07-20 01:39:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:37,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:37,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:37,294 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) [2022-07-20 01:39:37,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-20 01:39:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:39,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 5041 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 01:39:39,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-07-20 01:39:39,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:39,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:39,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170071403] [2022-07-20 01:39:39,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170071403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:39,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:39,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:39:39,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981427088] [2022-07-20 01:39:39,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:39,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:39:39,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:39,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:39:39,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:39:39,865 INFO L87 Difference]: Start difference. First operand 11336 states and 15799 transitions. Second operand has 6 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 3 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-07-20 01:39:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:41,898 INFO L93 Difference]: Finished difference Result 22418 states and 31267 transitions. [2022-07-20 01:39:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:39:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 3 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 383 [2022-07-20 01:39:41,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:41,936 INFO L225 Difference]: With dead ends: 22418 [2022-07-20 01:39:41,936 INFO L226 Difference]: Without dead ends: 11336 [2022-07-20 01:39:41,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:39:41,964 INFO L413 NwaCegarLoop]: 1947 mSDtfsCounter, 174 mSDsluCounter, 7476 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 9423 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:41,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 9423 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-20 01:39:41,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11336 states. [2022-07-20 01:39:42,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11336 to 11336. [2022-07-20 01:39:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11336 states, 8000 states have (on average 1.306875) internal successors, (10455), 8131 states have internal predecessors, (10455), 2623 states have call successors, (2623), 695 states have call predecessors, (2623), 712 states have return successors, (2713), 2597 states have call predecessors, (2713), 2622 states have call successors, (2713) [2022-07-20 01:39:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11336 states to 11336 states and 15791 transitions. [2022-07-20 01:39:42,397 INFO L78 Accepts]: Start accepts. Automaton has 11336 states and 15791 transitions. Word has length 383 [2022-07-20 01:39:42,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:42,397 INFO L495 AbstractCegarLoop]: Abstraction has 11336 states and 15791 transitions. [2022-07-20 01:39:42,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 3 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-07-20 01:39:42,398 INFO L276 IsEmpty]: Start isEmpty. Operand 11336 states and 15791 transitions. [2022-07-20 01:39:42,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-07-20 01:39:42,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:42,430 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:39:42,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-20 01:39:42,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:42,636 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:42,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:42,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1182376477, now seen corresponding path program 1 times [2022-07-20 01:39:42,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:42,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963184644] [2022-07-20 01:39:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:42,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:42,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:42,641 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) [2022-07-20 01:39:42,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-20 01:39:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:44,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 5041 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:39:44,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-07-20 01:39:44,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:44,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:44,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963184644] [2022-07-20 01:39:44,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963184644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:44,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:44,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 01:39:44,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179008592] [2022-07-20 01:39:44,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:44,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:39:44,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:44,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:39:44,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:39:44,923 INFO L87 Difference]: Start difference. First operand 11336 states and 15791 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 2 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) [2022-07-20 01:39:45,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:45,756 INFO L93 Difference]: Finished difference Result 31073 states and 43299 transitions. [2022-07-20 01:39:45,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 01:39:45,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 2 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) Word has length 383 [2022-07-20 01:39:45,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:45,838 INFO L225 Difference]: With dead ends: 31073 [2022-07-20 01:39:45,839 INFO L226 Difference]: Without dead ends: 19991 [2022-07-20 01:39:45,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:39:45,875 INFO L413 NwaCegarLoop]: 3287 mSDtfsCounter, 2028 mSDsluCounter, 8594 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 11881 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:45,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 11881 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 01:39:45,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19991 states. [2022-07-20 01:39:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19991 to 11368. [2022-07-20 01:39:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11368 states, 8024 states have (on average 1.3059571286141576) internal successors, (10479), 8155 states have internal predecessors, (10479), 2623 states have call successors, (2623), 695 states have call predecessors, (2623), 720 states have return successors, (2721), 2605 states have call predecessors, (2721), 2622 states have call successors, (2721) [2022-07-20 01:39:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11368 states to 11368 states and 15823 transitions. [2022-07-20 01:39:46,779 INFO L78 Accepts]: Start accepts. Automaton has 11368 states and 15823 transitions. Word has length 383 [2022-07-20 01:39:46,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:46,779 INFO L495 AbstractCegarLoop]: Abstraction has 11368 states and 15823 transitions. [2022-07-20 01:39:46,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 2 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) [2022-07-20 01:39:46,780 INFO L276 IsEmpty]: Start isEmpty. Operand 11368 states and 15823 transitions. [2022-07-20 01:39:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-07-20 01:39:46,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:46,807 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:39:46,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-20 01:39:47,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:47,011 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:47,012 INFO L85 PathProgramCache]: Analyzing trace with hash -899204884, now seen corresponding path program 1 times [2022-07-20 01:39:47,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:47,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615924799] [2022-07-20 01:39:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:47,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:47,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:47,016 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:39:47,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-20 01:39:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:49,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 5129 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-20 01:39:49,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2022-07-20 01:39:49,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:49,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:49,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615924799] [2022-07-20 01:39:49,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615924799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:49,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:49,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 01:39:49,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3513700] [2022-07-20 01:39:49,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:49,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 01:39:49,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 01:39:49,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:39:49,433 INFO L87 Difference]: Start difference. First operand 11368 states and 15823 transitions. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 6 states have internal predecessors, (219), 2 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) [2022-07-20 01:39:51,943 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 [] [2022-07-20 01:39:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:53,398 INFO L93 Difference]: Finished difference Result 22548 states and 31429 transitions. [2022-07-20 01:39:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 01:39:53,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 6 states have internal predecessors, (219), 2 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) Word has length 410 [2022-07-20 01:39:53,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:53,441 INFO L225 Difference]: With dead ends: 22548 [2022-07-20 01:39:53,441 INFO L226 Difference]: Without dead ends: 11434 [2022-07-20 01:39:53,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-20 01:39:53,469 INFO L413 NwaCegarLoop]: 2037 mSDtfsCounter, 9 mSDsluCounter, 10167 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12204 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:53,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 12204 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-07-20 01:39:53,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11434 states. [2022-07-20 01:39:53,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11434 to 11416. [2022-07-20 01:39:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11416 states, 8064 states have (on average 1.3044394841269842) internal successors, (10519), 8195 states have internal predecessors, (10519), 2623 states have call successors, (2623), 695 states have call predecessors, (2623), 728 states have return successors, (2761), 2613 states have call predecessors, (2761), 2622 states have call successors, (2761) [2022-07-20 01:39:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11416 states to 11416 states and 15903 transitions. [2022-07-20 01:39:53,985 INFO L78 Accepts]: Start accepts. Automaton has 11416 states and 15903 transitions. Word has length 410 [2022-07-20 01:39:53,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:53,986 INFO L495 AbstractCegarLoop]: Abstraction has 11416 states and 15903 transitions. [2022-07-20 01:39:53,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 6 states have internal predecessors, (219), 2 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) [2022-07-20 01:39:53,986 INFO L276 IsEmpty]: Start isEmpty. Operand 11416 states and 15903 transitions. [2022-07-20 01:39:54,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-07-20 01:39:54,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:54,018 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:39:54,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-07-20 01:39:54,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:54,240 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:54,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash -954835870, now seen corresponding path program 1 times [2022-07-20 01:39:54,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:54,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361353487] [2022-07-20 01:39:54,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:54,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:54,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:54,244 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:39:54,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-20 01:39:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:39:56,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 5172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 01:39:56,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:39:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-07-20 01:39:56,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:39:56,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:39:56,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361353487] [2022-07-20 01:39:56,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361353487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:39:56,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:39:56,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 01:39:56,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912582799] [2022-07-20 01:39:56,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:39:56,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:39:56,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:39:56,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:39:56,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:39:56,815 INFO L87 Difference]: Start difference. First operand 11416 states and 15903 transitions. Second operand has 5 states, 5 states have (on average 43.6) internal successors, (218), 4 states have internal predecessors, (218), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (50), 3 states have call predecessors, (50), 2 states have call successors, (50) [2022-07-20 01:39:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:39:57,677 INFO L93 Difference]: Finished difference Result 31305 states and 43627 transitions. [2022-07-20 01:39:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 01:39:57,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 4 states have internal predecessors, (218), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (50), 3 states have call predecessors, (50), 2 states have call successors, (50) Word has length 430 [2022-07-20 01:39:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:39:57,733 INFO L225 Difference]: With dead ends: 31305 [2022-07-20 01:39:57,733 INFO L226 Difference]: Without dead ends: 20143 [2022-07-20 01:39:57,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:39:57,755 INFO L413 NwaCegarLoop]: 3079 mSDtfsCounter, 2028 mSDsluCounter, 8178 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 11257 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 01:39:57,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 11257 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 01:39:57,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20143 states. [2022-07-20 01:39:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20143 to 11416. [2022-07-20 01:39:58,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11416 states, 8064 states have (on average 1.3044394841269842) internal successors, (10519), 8195 states have internal predecessors, (10519), 2623 states have call successors, (2623), 695 states have call predecessors, (2623), 728 states have return successors, (2761), 2613 states have call predecessors, (2761), 2622 states have call successors, (2761) [2022-07-20 01:39:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11416 states to 11416 states and 15903 transitions. [2022-07-20 01:39:58,212 INFO L78 Accepts]: Start accepts. Automaton has 11416 states and 15903 transitions. Word has length 430 [2022-07-20 01:39:58,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:39:58,212 INFO L495 AbstractCegarLoop]: Abstraction has 11416 states and 15903 transitions. [2022-07-20 01:39:58,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 4 states have internal predecessors, (218), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (50), 3 states have call predecessors, (50), 2 states have call successors, (50) [2022-07-20 01:39:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 11416 states and 15903 transitions. [2022-07-20 01:39:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-07-20 01:39:58,242 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:39:58,242 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:39:58,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-20 01:39:58,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:39:58,456 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:39:58,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:39:58,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2004896543, now seen corresponding path program 1 times [2022-07-20 01:39:58,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:39:58,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123272853] [2022-07-20 01:39:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:39:58,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:39:58,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:39:58,461 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:39:58,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-20 01:40:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:40:01,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 5679 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 01:40:01,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:40:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-07-20 01:40:01,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:40:01,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:40:01,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123272853] [2022-07-20 01:40:01,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123272853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:40:01,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:40:01,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:40:01,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115823606] [2022-07-20 01:40:01,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:40:01,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:40:01,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:40:01,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:40:01,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:40:01,657 INFO L87 Difference]: Start difference. First operand 11416 states and 15903 transitions. Second operand has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-20 01:40:02,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:40:02,625 INFO L93 Difference]: Finished difference Result 23874 states and 33443 transitions. [2022-07-20 01:40:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:40:02,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 2 states have call successors, (60) Word has length 504 [2022-07-20 01:40:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:40:02,673 INFO L225 Difference]: With dead ends: 23874 [2022-07-20 01:40:02,673 INFO L226 Difference]: Without dead ends: 12712 [2022-07-20 01:40:02,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:40:02,704 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 143 mSDsluCounter, 8596 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 10776 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 01:40:02,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 10776 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 01:40:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12712 states. [2022-07-20 01:40:03,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12712 to 11456. [2022-07-20 01:40:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11456 states, 8096 states have (on average 1.303236166007905) internal successors, (10551), 8227 states have internal predecessors, (10551), 2623 states have call successors, (2623), 695 states have call predecessors, (2623), 736 states have return successors, (2777), 2621 states have call predecessors, (2777), 2622 states have call successors, (2777) [2022-07-20 01:40:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11456 states to 11456 states and 15951 transitions. [2022-07-20 01:40:03,255 INFO L78 Accepts]: Start accepts. Automaton has 11456 states and 15951 transitions. Word has length 504 [2022-07-20 01:40:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:40:03,256 INFO L495 AbstractCegarLoop]: Abstraction has 11456 states and 15951 transitions. [2022-07-20 01:40:03,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-20 01:40:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 11456 states and 15951 transitions. [2022-07-20 01:40:03,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-07-20 01:40:03,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:40:03,288 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:40:03,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-20 01:40:03,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:40:03,504 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:40:03,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:40:03,504 INFO L85 PathProgramCache]: Analyzing trace with hash 95859240, now seen corresponding path program 1 times [2022-07-20 01:40:03,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:40:03,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743206017] [2022-07-20 01:40:03,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:40:03,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:40:03,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:40:03,508 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:40:03,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-20 01:40:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:40:06,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 5679 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 01:40:06,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:40:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-07-20 01:40:06,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:40:06,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:40:06,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743206017] [2022-07-20 01:40:06,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743206017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:40:06,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:40:06,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:40:06,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92944447] [2022-07-20 01:40:06,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:40:06,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:40:06,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:40:06,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:40:06,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:40:06,629 INFO L87 Difference]: Start difference. First operand 11456 states and 15951 transitions. Second operand has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-20 01:40:07,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:40:07,506 INFO L93 Difference]: Finished difference Result 23482 states and 32811 transitions. [2022-07-20 01:40:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:40:07,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 2 states have call successors, (60) Word has length 504 [2022-07-20 01:40:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:40:07,541 INFO L225 Difference]: With dead ends: 23482 [2022-07-20 01:40:07,542 INFO L226 Difference]: Without dead ends: 12280 [2022-07-20 01:40:07,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-20 01:40:07,564 INFO L413 NwaCegarLoop]: 2138 mSDtfsCounter, 126 mSDsluCounter, 8407 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 10545 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 01:40:07,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 10545 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 01:40:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12280 states. [2022-07-20 01:40:07,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12280 to 11472. [2022-07-20 01:40:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11472 states, 8112 states have (on average 1.302638067061144) internal successors, (10567), 8235 states have internal predecessors, (10567), 2623 states have call successors, (2623), 695 states have call predecessors, (2623), 736 states have return successors, (2777), 2629 states have call predecessors, (2777), 2622 states have call successors, (2777) [2022-07-20 01:40:08,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 15967 transitions. [2022-07-20 01:40:08,025 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 15967 transitions. Word has length 504 [2022-07-20 01:40:08,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:40:08,025 INFO L495 AbstractCegarLoop]: Abstraction has 11472 states and 15967 transitions. [2022-07-20 01:40:08,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-20 01:40:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 15967 transitions. [2022-07-20 01:40:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-07-20 01:40:08,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:40:08,058 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:40:08,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-20 01:40:08,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:40:08,272 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:40:08,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:40:08,272 INFO L85 PathProgramCache]: Analyzing trace with hash 415905805, now seen corresponding path program 1 times [2022-07-20 01:40:08,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:40:08,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435201116] [2022-07-20 01:40:08,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:40:08,275 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:40:08,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:40:08,277 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:40:08,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-20 01:40:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:40:11,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 5695 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 01:40:11,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:40:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2022-07-20 01:40:11,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:40:11,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:40:11,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435201116] [2022-07-20 01:40:11,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435201116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:40:11,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:40:11,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:40:11,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558463539] [2022-07-20 01:40:11,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:40:11,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:40:11,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:40:11,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:40:11,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:40:11,575 INFO L87 Difference]: Start difference. First operand 11472 states and 15967 transitions. Second operand has 6 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-07-20 01:40:13,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:40:13,969 INFO L93 Difference]: Finished difference Result 23882 states and 33411 transitions. [2022-07-20 01:40:13,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:40:13,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 507 [2022-07-20 01:40:13,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:40:14,006 INFO L225 Difference]: With dead ends: 23882 [2022-07-20 01:40:14,006 INFO L226 Difference]: Without dead ends: 12664 [2022-07-20 01:40:14,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:40:14,026 INFO L413 NwaCegarLoop]: 2094 mSDtfsCounter, 135 mSDsluCounter, 8151 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 10245 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-20 01:40:14,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 10245 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-20 01:40:14,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12664 states. [2022-07-20 01:40:14,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12664 to 11472. [2022-07-20 01:40:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11472 states, 8112 states have (on average 1.3016518737672584) internal successors, (10559), 8235 states have internal predecessors, (10559), 2623 states have call successors, (2623), 695 states have call predecessors, (2623), 736 states have return successors, (2777), 2629 states have call predecessors, (2777), 2622 states have call successors, (2777) [2022-07-20 01:40:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 15959 transitions. [2022-07-20 01:40:14,396 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 15959 transitions. Word has length 507 [2022-07-20 01:40:14,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:40:14,396 INFO L495 AbstractCegarLoop]: Abstraction has 11472 states and 15959 transitions. [2022-07-20 01:40:14,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-07-20 01:40:14,396 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 15959 transitions. [2022-07-20 01:40:14,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-07-20 01:40:14,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:40:14,418 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:40:14,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-20 01:40:14,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:40:14,619 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:40:14,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:40:14,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1243392181, now seen corresponding path program 1 times [2022-07-20 01:40:14,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:40:14,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142998951] [2022-07-20 01:40:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:40:14,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:40:14,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:40:14,624 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:40:14,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-20 01:40:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:40:17,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 5695 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 01:40:17,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:40:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2022-07-20 01:40:18,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:40:18,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:40:18,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142998951] [2022-07-20 01:40:18,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142998951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:40:18,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:40:18,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:40:18,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358000931] [2022-07-20 01:40:18,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:40:18,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:40:18,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:40:18,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:40:18,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:40:18,059 INFO L87 Difference]: Start difference. First operand 11472 states and 15959 transitions. Second operand has 6 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-07-20 01:40:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:40:20,543 INFO L93 Difference]: Finished difference Result 22690 states and 31595 transitions. [2022-07-20 01:40:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:40:20,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 507 [2022-07-20 01:40:20,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:40:20,659 INFO L225 Difference]: With dead ends: 22690 [2022-07-20 01:40:20,659 INFO L226 Difference]: Without dead ends: 11472 [2022-07-20 01:40:20,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:40:20,676 INFO L413 NwaCegarLoop]: 1945 mSDtfsCounter, 11 mSDsluCounter, 7667 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 9612 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:40:20,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 9612 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-20 01:40:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11472 states. [2022-07-20 01:40:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11472 to 11472. [2022-07-20 01:40:20,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11472 states, 8112 states have (on average 1.3006656804733727) internal successors, (10551), 8235 states have internal predecessors, (10551), 2623 states have call successors, (2623), 695 states have call predecessors, (2623), 736 states have return successors, (2777), 2629 states have call predecessors, (2777), 2622 states have call successors, (2777) [2022-07-20 01:40:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 15951 transitions. [2022-07-20 01:40:21,033 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 15951 transitions. Word has length 507 [2022-07-20 01:40:21,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:40:21,034 INFO L495 AbstractCegarLoop]: Abstraction has 11472 states and 15951 transitions. [2022-07-20 01:40:21,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-07-20 01:40:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 15951 transitions. [2022-07-20 01:40:21,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-07-20 01:40:21,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:40:21,058 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:40:21,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-20 01:40:21,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:40:21,259 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:40:21,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:40:21,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1891408947, now seen corresponding path program 1 times [2022-07-20 01:40:21,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:40:21,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182501333] [2022-07-20 01:40:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:40:21,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:40:21,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:40:21,264 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:40:21,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-20 01:40:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:40:24,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 5695 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 01:40:24,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:40:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-07-20 01:40:24,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:40:24,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:40:24,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182501333] [2022-07-20 01:40:24,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182501333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:40:24,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:40:24,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:40:24,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883126076] [2022-07-20 01:40:24,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:40:24,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:40:24,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:40:24,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:40:24,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:40:24,969 INFO L87 Difference]: Start difference. First operand 11472 states and 15951 transitions. Second operand has 6 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-07-20 01:40:27,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:40:27,404 INFO L93 Difference]: Finished difference Result 22940 states and 31942 transitions. [2022-07-20 01:40:27,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:40:27,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 507 [2022-07-20 01:40:27,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:40:27,444 INFO L225 Difference]: With dead ends: 22940 [2022-07-20 01:40:27,445 INFO L226 Difference]: Without dead ends: 11472 [2022-07-20 01:40:27,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:40:27,474 INFO L413 NwaCegarLoop]: 1944 mSDtfsCounter, 11 mSDsluCounter, 7664 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 9608 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:40:27,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 9608 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-20 01:40:27,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11472 states. [2022-07-20 01:40:27,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11472 to 11472. [2022-07-20 01:40:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11472 states, 8112 states have (on average 1.29930966469428) internal successors, (10540), 8235 states have internal predecessors, (10540), 2623 states have call successors, (2623), 695 states have call predecessors, (2623), 736 states have return successors, (2777), 2629 states have call predecessors, (2777), 2622 states have call successors, (2777) [2022-07-20 01:40:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 15940 transitions. [2022-07-20 01:40:27,917 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 15940 transitions. Word has length 507 [2022-07-20 01:40:27,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:40:27,917 INFO L495 AbstractCegarLoop]: Abstraction has 11472 states and 15940 transitions. [2022-07-20 01:40:27,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-07-20 01:40:27,918 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 15940 transitions. [2022-07-20 01:40:27,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-07-20 01:40:27,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:40:27,940 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:40:28,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-20 01:40:28,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:40:28,141 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:40:28,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:40:28,141 INFO L85 PathProgramCache]: Analyzing trace with hash 393286223, now seen corresponding path program 1 times [2022-07-20 01:40:28,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:40:28,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173967949] [2022-07-20 01:40:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:40:28,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:40:28,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:40:28,146 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:40:28,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-20 01:40:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:40:31,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 5695 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:40:31,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:40:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2022-07-20 01:40:31,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:40:31,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:40:31,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173967949] [2022-07-20 01:40:31,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173967949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:40:31,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:40:31,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 01:40:31,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536900595] [2022-07-20 01:40:31,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:40:31,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:40:31,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:40:31,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:40:31,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:40:31,858 INFO L87 Difference]: Start difference. First operand 11472 states and 15940 transitions. Second operand has 5 states, 5 states have (on average 52.4) internal successors, (262), 4 states have internal predecessors, (262), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-20 01:40:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:40:32,825 INFO L93 Difference]: Finished difference Result 22752 states and 31632 transitions. [2022-07-20 01:40:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 01:40:32,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.4) internal successors, (262), 4 states have internal predecessors, (262), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 2 states have call successors, (60) Word has length 507 [2022-07-20 01:40:32,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:40:32,861 INFO L225 Difference]: With dead ends: 22752 [2022-07-20 01:40:32,862 INFO L226 Difference]: Without dead ends: 11534 [2022-07-20 01:40:32,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:40:32,887 INFO L413 NwaCegarLoop]: 2038 mSDtfsCounter, 5 mSDsluCounter, 6098 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8136 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 01:40:32,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8136 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 01:40:32,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11534 states. [2022-07-20 01:40:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11534 to 11504. [2022-07-20 01:40:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11504 states, 8136 states have (on average 1.2984267453294003) internal successors, (10564), 8259 states have internal predecessors, (10564), 2623 states have call successors, (2623), 695 states have call predecessors, (2623), 744 states have return successors, (2789), 2637 states have call predecessors, (2789), 2622 states have call successors, (2789) [2022-07-20 01:40:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11504 states to 11504 states and 15976 transitions. [2022-07-20 01:40:33,384 INFO L78 Accepts]: Start accepts. Automaton has 11504 states and 15976 transitions. Word has length 507 [2022-07-20 01:40:33,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:40:33,385 INFO L495 AbstractCegarLoop]: Abstraction has 11504 states and 15976 transitions. [2022-07-20 01:40:33,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.4) internal successors, (262), 4 states have internal predecessors, (262), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 2 states have call successors, (60) [2022-07-20 01:40:33,385 INFO L276 IsEmpty]: Start isEmpty. Operand 11504 states and 15976 transitions. [2022-07-20 01:40:33,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-07-20 01:40:33,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:40:33,411 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:40:33,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-20 01:40:33,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:40:33,612 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:40:33,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:40:33,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1034621758, now seen corresponding path program 1 times [2022-07-20 01:40:33,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:40:33,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446286158] [2022-07-20 01:40:33,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:40:33,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:40:33,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:40:33,617 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:40:33,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-20 01:40:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:40:37,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 5750 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 01:40:37,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:40:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2022-07-20 01:40:37,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:40:37,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:40:37,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446286158] [2022-07-20 01:40:37,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446286158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:40:37,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:40:37,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 01:40:37,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939710499] [2022-07-20 01:40:37,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:40:37,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 01:40:37,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:40:37,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 01:40:37,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 01:40:37,528 INFO L87 Difference]: Start difference. First operand 11504 states and 15976 transitions. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 2 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-07-20 01:40:37,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:40:37,902 INFO L93 Difference]: Finished difference Result 23169 states and 32273 transitions. [2022-07-20 01:40:37,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 01:40:37,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 2 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 521 [2022-07-20 01:40:37,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:40:37,941 INFO L225 Difference]: With dead ends: 23169 [2022-07-20 01:40:37,941 INFO L226 Difference]: Without dead ends: 11647 [2022-07-20 01:40:37,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:40:37,969 INFO L413 NwaCegarLoop]: 2038 mSDtfsCounter, 12 mSDsluCounter, 4064 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6102 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:40:37,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6102 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 01:40:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11647 states. [2022-07-20 01:40:38,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11647 to 11515. [2022-07-20 01:40:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11515 states, 8147 states have (on average 1.2980238124462993) internal successors, (10575), 8270 states have internal predecessors, (10575), 2623 states have call successors, (2623), 695 states have call predecessors, (2623), 744 states have return successors, (2789), 2637 states have call predecessors, (2789), 2622 states have call successors, (2789) [2022-07-20 01:40:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11515 states to 11515 states and 15987 transitions. [2022-07-20 01:40:38,321 INFO L78 Accepts]: Start accepts. Automaton has 11515 states and 15987 transitions. Word has length 521 [2022-07-20 01:40:38,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:40:38,322 INFO L495 AbstractCegarLoop]: Abstraction has 11515 states and 15987 transitions. [2022-07-20 01:40:38,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 2 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-07-20 01:40:38,322 INFO L276 IsEmpty]: Start isEmpty. Operand 11515 states and 15987 transitions. [2022-07-20 01:40:38,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-07-20 01:40:38,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:40:38,344 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:40:38,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-20 01:40:38,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:40:38,545 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:40:38,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:40:38,546 INFO L85 PathProgramCache]: Analyzing trace with hash 292819295, now seen corresponding path program 1 times [2022-07-20 01:40:38,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:40:38,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100157395] [2022-07-20 01:40:38,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:40:38,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:40:38,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:40:38,551 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:40:38,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-20 01:40:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:40:42,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 5798 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:40:42,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:40:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 272 proven. 1 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2022-07-20 01:40:42,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:40:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-07-20 01:40:43,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:40:43,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100157395] [2022-07-20 01:40:43,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100157395] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:40:43,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:40:43,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-20 01:40:43,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670684508] [2022-07-20 01:40:43,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:40:43,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 01:40:43,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:40:43,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 01:40:43,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-20 01:40:43,609 INFO L87 Difference]: Start difference. First operand 11515 states and 15987 transitions. Second operand has 8 states, 8 states have (on average 49.5) internal successors, (396), 8 states have internal predecessors, (396), 4 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) [2022-07-20 01:40:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:40:44,385 INFO L93 Difference]: Finished difference Result 23521 states and 32817 transitions. [2022-07-20 01:40:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 01:40:44,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 49.5) internal successors, (396), 8 states have internal predecessors, (396), 4 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) Word has length 541 [2022-07-20 01:40:44,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:40:44,428 INFO L225 Difference]: With dead ends: 23521 [2022-07-20 01:40:44,429 INFO L226 Difference]: Without dead ends: 11966 [2022-07-20 01:40:44,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1082 GetRequests, 1074 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-20 01:40:44,459 INFO L413 NwaCegarLoop]: 2053 mSDtfsCounter, 54 mSDsluCounter, 10144 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 12197 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 01:40:44,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 12197 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 01:40:44,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11966 states. [2022-07-20 01:40:44,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11966 to 11746. [2022-07-20 01:40:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11746 states, 8312 states have (on average 1.296077959576516) internal successors, (10773), 8435 states have internal predecessors, (10773), 2689 states have call successors, (2689), 695 states have call predecessors, (2689), 744 states have return successors, (2855), 2703 states have call predecessors, (2855), 2688 states have call successors, (2855) [2022-07-20 01:40:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11746 states to 11746 states and 16317 transitions. [2022-07-20 01:40:44,853 INFO L78 Accepts]: Start accepts. Automaton has 11746 states and 16317 transitions. Word has length 541 [2022-07-20 01:40:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:40:44,854 INFO L495 AbstractCegarLoop]: Abstraction has 11746 states and 16317 transitions. [2022-07-20 01:40:44,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 49.5) internal successors, (396), 8 states have internal predecessors, (396), 4 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) [2022-07-20 01:40:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 11746 states and 16317 transitions. [2022-07-20 01:40:44,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-07-20 01:40:44,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:40:44,879 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:40:44,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-07-20 01:40:45,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:40:45,087 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:40:45,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:40:45,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2056719511, now seen corresponding path program 1 times [2022-07-20 01:40:45,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:40:45,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651278593] [2022-07-20 01:40:45,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:40:45,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:40:45,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:40:45,092 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:40:45,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-20 01:40:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:40:49,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 5847 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 01:40:49,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:40:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2022-07-20 01:40:49,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:40:49,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:40:49,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651278593] [2022-07-20 01:40:49,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651278593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:40:49,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:40:49,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:40:49,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837957383] [2022-07-20 01:40:49,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:40:49,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:40:49,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:40:49,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:40:49,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:40:49,497 INFO L87 Difference]: Start difference. First operand 11746 states and 16317 transitions. Second operand has 6 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 3 states have call successors, (68), 2 states have call predecessors, (68), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2022-07-20 01:40:51,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:40:51,564 INFO L93 Difference]: Finished difference Result 23510 states and 32757 transitions. [2022-07-20 01:40:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:40:51,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 3 states have call successors, (68), 2 states have call predecessors, (68), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) Word has length 542 [2022-07-20 01:40:51,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:40:51,603 INFO L225 Difference]: With dead ends: 23510 [2022-07-20 01:40:51,603 INFO L226 Difference]: Without dead ends: 11768 [2022-07-20 01:40:51,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:40:51,632 INFO L413 NwaCegarLoop]: 1943 mSDtfsCounter, 3 mSDsluCounter, 7672 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9615 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-20 01:40:51,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9615 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-20 01:40:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11768 states. [2022-07-20 01:40:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11768 to 11746. [2022-07-20 01:40:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11746 states, 8312 states have (on average 1.2947545717035611) internal successors, (10762), 8435 states have internal predecessors, (10762), 2689 states have call successors, (2689), 695 states have call predecessors, (2689), 744 states have return successors, (2855), 2703 states have call predecessors, (2855), 2688 states have call successors, (2855) [2022-07-20 01:40:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11746 states to 11746 states and 16306 transitions. [2022-07-20 01:40:51,999 INFO L78 Accepts]: Start accepts. Automaton has 11746 states and 16306 transitions. Word has length 542 [2022-07-20 01:40:52,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:40:52,000 INFO L495 AbstractCegarLoop]: Abstraction has 11746 states and 16306 transitions. [2022-07-20 01:40:52,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 3 states have call successors, (68), 2 states have call predecessors, (68), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2022-07-20 01:40:52,000 INFO L276 IsEmpty]: Start isEmpty. Operand 11746 states and 16306 transitions. [2022-07-20 01:40:52,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-07-20 01:40:52,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:40:52,024 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:40:52,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-07-20 01:40:52,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:40:52,225 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:40:52,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:40:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1749173401, now seen corresponding path program 1 times [2022-07-20 01:40:52,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:40:52,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930961219] [2022-07-20 01:40:52,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:40:52,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:40:52,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:40:52,229 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:40:52,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-20 01:40:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:40:56,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 5847 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:40:56,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:40:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2022-07-20 01:40:56,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:40:56,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:40:56,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930961219] [2022-07-20 01:40:56,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930961219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:40:56,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:40:56,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 01:40:56,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716883712] [2022-07-20 01:40:56,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:40:56,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:40:56,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:40:56,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:40:56,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:40:56,569 INFO L87 Difference]: Start difference. First operand 11746 states and 16306 transitions. Second operand has 5 states, 5 states have (on average 55.8) internal successors, (279), 4 states have internal predecessors, (279), 2 states have call successors, (68), 2 states have call predecessors, (68), 3 states have return successors, (65), 3 states have call predecessors, (65), 2 states have call successors, (65) [2022-07-20 01:40:57,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:40:57,384 INFO L93 Difference]: Finished difference Result 23278 states and 32345 transitions. [2022-07-20 01:40:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 01:40:57,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.8) internal successors, (279), 4 states have internal predecessors, (279), 2 states have call successors, (68), 2 states have call predecessors, (68), 3 states have return successors, (65), 3 states have call predecessors, (65), 2 states have call successors, (65) Word has length 542 [2022-07-20 01:40:57,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:40:57,424 INFO L225 Difference]: With dead ends: 23278 [2022-07-20 01:40:57,424 INFO L226 Difference]: Without dead ends: 11808 [2022-07-20 01:40:57,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:40:57,457 INFO L413 NwaCegarLoop]: 2036 mSDtfsCounter, 5 mSDsluCounter, 6092 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8128 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 01:40:57,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 8128 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 01:40:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11808 states. [2022-07-20 01:40:57,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11808 to 11778. [2022-07-20 01:40:57,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11778 states, 8336 states have (on average 1.2939059500959693) internal successors, (10786), 8459 states have internal predecessors, (10786), 2689 states have call successors, (2689), 695 states have call predecessors, (2689), 752 states have return successors, (2875), 2711 states have call predecessors, (2875), 2688 states have call successors, (2875) [2022-07-20 01:40:57,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11778 states to 11778 states and 16350 transitions. [2022-07-20 01:40:57,925 INFO L78 Accepts]: Start accepts. Automaton has 11778 states and 16350 transitions. Word has length 542 [2022-07-20 01:40:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:40:57,926 INFO L495 AbstractCegarLoop]: Abstraction has 11778 states and 16350 transitions. [2022-07-20 01:40:57,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.8) internal successors, (279), 4 states have internal predecessors, (279), 2 states have call successors, (68), 2 states have call predecessors, (68), 3 states have return successors, (65), 3 states have call predecessors, (65), 2 states have call successors, (65) [2022-07-20 01:40:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 11778 states and 16350 transitions. [2022-07-20 01:40:57,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-07-20 01:40:57,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:40:57,950 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:40:58,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-07-20 01:40:58,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:40:58,151 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:40:58,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:40:58,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2039518039, now seen corresponding path program 1 times [2022-07-20 01:40:58,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:40:58,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064707485] [2022-07-20 01:40:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:40:58,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:40:58,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:40:58,156 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:40:58,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-07-20 01:41:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:41:02,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 5847 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 01:41:02,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:41:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2022-07-20 01:41:02,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:41:02,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:41:02,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064707485] [2022-07-20 01:41:02,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064707485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:41:02,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:41:02,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 01:41:02,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986525516] [2022-07-20 01:41:02,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:41:02,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 01:41:02,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:41:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 01:41:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-20 01:41:02,635 INFO L87 Difference]: Start difference. First operand 11778 states and 16350 transitions. Second operand has 8 states, 8 states have (on average 34.875) internal successors, (279), 6 states have internal predecessors, (279), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (65), 4 states have call predecessors, (65), 2 states have call successors, (65) [2022-07-20 01:41:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:41:08,352 INFO L93 Difference]: Finished difference Result 23734 states and 33013 transitions. [2022-07-20 01:41:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 01:41:08,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 34.875) internal successors, (279), 6 states have internal predecessors, (279), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (65), 4 states have call predecessors, (65), 2 states have call successors, (65) Word has length 542 [2022-07-20 01:41:08,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:41:08,390 INFO L225 Difference]: With dead ends: 23734 [2022-07-20 01:41:08,390 INFO L226 Difference]: Without dead ends: 12232 [2022-07-20 01:41:08,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-20 01:41:08,413 INFO L413 NwaCegarLoop]: 2113 mSDtfsCounter, 128 mSDsluCounter, 12482 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 14595 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-20 01:41:08,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 14595 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-20 01:41:08,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12232 states. [2022-07-20 01:41:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12232 to 11818. [2022-07-20 01:41:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11818 states, 8368 states have (on average 1.2927820267686425) internal successors, (10818), 8491 states have internal predecessors, (10818), 2689 states have call successors, (2689), 695 states have call predecessors, (2689), 760 states have return successors, (2883), 2719 states have call predecessors, (2883), 2688 states have call successors, (2883) [2022-07-20 01:41:08,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11818 states to 11818 states and 16390 transitions. [2022-07-20 01:41:08,879 INFO L78 Accepts]: Start accepts. Automaton has 11818 states and 16390 transitions. Word has length 542 [2022-07-20 01:41:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:41:08,879 INFO L495 AbstractCegarLoop]: Abstraction has 11818 states and 16390 transitions. [2022-07-20 01:41:08,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.875) internal successors, (279), 6 states have internal predecessors, (279), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (65), 4 states have call predecessors, (65), 2 states have call successors, (65) [2022-07-20 01:41:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 11818 states and 16390 transitions. [2022-07-20 01:41:08,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-07-20 01:41:08,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:41:08,900 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:41:08,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-07-20 01:41:09,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:41:09,101 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:41:09,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:41:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash -618101590, now seen corresponding path program 1 times [2022-07-20 01:41:09,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:41:09,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373200364] [2022-07-20 01:41:09,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:41:09,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:41:09,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:41:09,108 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:41:09,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-07-20 01:41:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:41:13,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 5828 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:41:13,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:41:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2022-07-20 01:41:13,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:41:13,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:41:13,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373200364] [2022-07-20 01:41:13,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373200364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:41:13,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:41:13,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 01:41:13,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629766728] [2022-07-20 01:41:13,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:41:13,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:41:13,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:41:13,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:41:13,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:41:13,233 INFO L87 Difference]: Start difference. First operand 11818 states and 16390 transitions. Second operand has 5 states, 5 states have (on average 55.6) internal successors, (278), 4 states have internal predecessors, (278), 2 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (64), 3 states have call predecessors, (64), 2 states have call successors, (64) [2022-07-20 01:41:13,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:41:13,790 INFO L93 Difference]: Finished difference Result 23693 states and 32907 transitions. [2022-07-20 01:41:13,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 01:41:13,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.6) internal successors, (278), 4 states have internal predecessors, (278), 2 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (64), 3 states have call predecessors, (64), 2 states have call successors, (64) Word has length 536 [2022-07-20 01:41:13,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:41:13,838 INFO L225 Difference]: With dead ends: 23693 [2022-07-20 01:41:13,838 INFO L226 Difference]: Without dead ends: 11879 [2022-07-20 01:41:13,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:41:13,866 INFO L413 NwaCegarLoop]: 2037 mSDtfsCounter, 3 mSDsluCounter, 6103 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8140 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 01:41:13,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8140 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 01:41:13,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11879 states. [2022-07-20 01:41:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11879 to 11846. [2022-07-20 01:41:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11846 states, 8393 states have (on average 1.291909924937448) internal successors, (10843), 8508 states have internal predecessors, (10843), 2689 states have call successors, (2689), 695 states have call predecessors, (2689), 763 states have return successors, (2889), 2730 states have call predecessors, (2889), 2688 states have call successors, (2889) [2022-07-20 01:41:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11846 states to 11846 states and 16421 transitions. [2022-07-20 01:41:14,228 INFO L78 Accepts]: Start accepts. Automaton has 11846 states and 16421 transitions. Word has length 536 [2022-07-20 01:41:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:41:14,228 INFO L495 AbstractCegarLoop]: Abstraction has 11846 states and 16421 transitions. [2022-07-20 01:41:14,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.6) internal successors, (278), 4 states have internal predecessors, (278), 2 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (64), 3 states have call predecessors, (64), 2 states have call successors, (64) [2022-07-20 01:41:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 11846 states and 16421 transitions. [2022-07-20 01:41:14,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-07-20 01:41:14,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:41:14,250 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 12, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:41:14,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0