./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-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-?-6c24879 [2022-07-12 14:34:41,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 14:34:41,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 14:34:41,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 14:34:41,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 14:34:41,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 14:34:41,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 14:34:41,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 14:34:41,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 14:34:41,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 14:34:41,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 14:34:41,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 14:34:41,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 14:34:41,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 14:34:41,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 14:34:41,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 14:34:41,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 14:34:41,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 14:34:41,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 14:34:41,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 14:34:41,890 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 14:34:41,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 14:34:41,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 14:34:41,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 14:34:41,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 14:34:41,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 14:34:41,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 14:34:41,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 14:34:41,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 14:34:41,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 14:34:41,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 14:34:41,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 14:34:41,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 14:34:41,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 14:34:41,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 14:34:41,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 14:34:41,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 14:34:41,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 14:34:41,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 14:34:41,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 14:34:41,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 14:34:41,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 14:34:41,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 14:34:41,945 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 14:34:41,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 14:34:41,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 14:34:41,954 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 14:34:41,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 14:34:41,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 14:34:41,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 14:34:41,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 14:34:41,956 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 14:34:41,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 14:34:41,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 14:34:41,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 14:34:41,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 14:34:41,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 14:34:41,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 14:34:41,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 14:34:41,959 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 14:34:41,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 14:34:41,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 14:34:41,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 14:34:41,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 14:34:41,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 14:34:41,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 14:34:41,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 14:34:41,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 14:34:41,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 14:34:41,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 14:34:41,962 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 14:34:41,962 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 14:34:41,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 14:34:41,963 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef [2022-07-12 14:34:42,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 14:34:42,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 14:34:42,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 14:34:42,213 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 14:34:42,214 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 14:34:42,215 INFO L432 ainManager$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 [2022-07-12 14:34:42,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c23aee2d4/ed0484fd415a4988b71b0f9390ab3161/FLAG3c7b5c6e9 [2022-07-12 14:34:43,002 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 14:34:43,002 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 [2022-07-12 14:34:43,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c23aee2d4/ed0484fd415a4988b71b0f9390ab3161/FLAG3c7b5c6e9 [2022-07-12 14:34:43,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c23aee2d4/ed0484fd415a4988b71b0f9390ab3161 [2022-07-12 14:34:43,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 14:34:43,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 14:34:43,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 14:34:43,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 14:34:43,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 14:34:43,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:34:43" (1/1) ... [2022-07-12 14:34:43,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d46f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:43, skipping insertion in model container [2022-07-12 14:34:43,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:34:43" (1/1) ... [2022-07-12 14:34:43,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 14:34:43,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 14:34:45,496 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] [2022-07-12 14:34:45,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:34:45,569 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 14:34:45,813 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) [2022-07-12 14:34:45,819 INFO L158 Benchmark]: Toolchain (without parser) took 2510.48ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 72.1MB in the beginning and 77.6MB in the end (delta: -5.5MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. [2022-07-12 14:34:45,819 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory was 66.3MB in the beginning and 66.2MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 14:34:45,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2508.76ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 71.8MB in the beginning and 77.6MB in the end (delta: -5.8MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. [2022-07-12 14:34:45,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory was 66.3MB in the beginning and 66.2MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2508.76ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 71.8MB in the beginning and 77.6MB in the end (delta: -5.8MB). Peak memory consumption was 68.7MB. 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-?-6c24879 [2022-07-12 14:34:47,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 14:34:47,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 14:34:47,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 14:34:47,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 14:34:47,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 14:34:47,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 14:34:47,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 14:34:47,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 14:34:47,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 14:34:47,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 14:34:47,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 14:34:47,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 14:34:47,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 14:34:47,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 14:34:47,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 14:34:47,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 14:34:47,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 14:34:47,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 14:34:47,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 14:34:47,721 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 14:34:47,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 14:34:47,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 14:34:47,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 14:34:47,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 14:34:47,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 14:34:47,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 14:34:47,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 14:34:47,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 14:34:47,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 14:34:47,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 14:34:47,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 14:34:47,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 14:34:47,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 14:34:47,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 14:34:47,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 14:34:47,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 14:34:47,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 14:34:47,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 14:34:47,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 14:34:47,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 14:34:47,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 14:34:47,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-12 14:34:47,782 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 14:34:47,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 14:34:47,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 14:34:47,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 14:34:47,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 14:34:47,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 14:34:47,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 14:34:47,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 14:34:47,785 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 14:34:47,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 14:34:47,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 14:34:47,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 14:34:47,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 14:34:47,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 14:34:47,795 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 14:34:47,796 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 14:34:47,796 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 14:34:47,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 14:34:47,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 14:34:47,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 14:34:47,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 14:34:47,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 14:34:47,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 14:34:47,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 14:34:47,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 14:34:47,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 14:34:47,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 14:34:47,800 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 14:34:47,800 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 14:34:47,801 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 14:34:47,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 14:34:47,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 14:34:47,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 14:34:47,802 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef [2022-07-12 14:34:48,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 14:34:48,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 14:34:48,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 14:34:48,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 14:34:48,132 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 14:34:48,133 INFO L432 ainManager$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 [2022-07-12 14:34:48,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c4f8a29/875aed71cb95407ba2888e95b3df7ec7/FLAG05a2c306d [2022-07-12 14:34:48,975 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 14:34:48,976 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 [2022-07-12 14:34:49,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c4f8a29/875aed71cb95407ba2888e95b3df7ec7/FLAG05a2c306d [2022-07-12 14:34:49,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c4f8a29/875aed71cb95407ba2888e95b3df7ec7 [2022-07-12 14:34:49,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 14:34:49,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 14:34:49,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 14:34:49,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 14:34:49,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 14:34:49,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:34:49" (1/1) ... [2022-07-12 14:34:49,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e12d107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:49, skipping insertion in model container [2022-07-12 14:34:49,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:34:49" (1/1) ... [2022-07-12 14:34:49,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 14:34:49,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 14:34:51,826 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] [2022-07-12 14:34:51,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:34:51,922 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-12 14:34:52,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 14:34:52,438 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] [2022-07-12 14:34:52,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:34:52,458 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 14:34:52,868 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] [2022-07-12 14:34:52,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:34:52,960 INFO L208 MainTranslator]: Completed translation [2022-07-12 14:34:52,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:52 WrapperNode [2022-07-12 14:34:52,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 14:34:52,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 14:34:52,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 14:34:52,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 14:34:52,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:52" (1/1) ... [2022-07-12 14:34:53,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:52" (1/1) ... [2022-07-12 14:34:53,326 INFO L137 Inliner]: procedures = 288, calls = 5784, calls flagged for inlining = 107, calls inlined = 80, statements flattened = 6223 [2022-07-12 14:34:53,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 14:34:53,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 14:34:53,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 14:34:53,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 14:34:53,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:52" (1/1) ... [2022-07-12 14:34:53,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:52" (1/1) ... [2022-07-12 14:34:53,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:52" (1/1) ... [2022-07-12 14:34:53,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:52" (1/1) ... [2022-07-12 14:34:53,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:52" (1/1) ... [2022-07-12 14:34:53,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:52" (1/1) ... [2022-07-12 14:34:53,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:52" (1/1) ... [2022-07-12 14:34:53,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 14:34:53,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 14:34:53,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 14:34:53,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 14:34:53,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:52" (1/1) ... [2022-07-12 14:34:53,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 14:34:53,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 14:34:53,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 14:34:53,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 14:34:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue_status_stage [2022-07-12 14:34:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue_status_stage [2022-07-12 14:34:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-12 14:34:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue [2022-07-12 14:34:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue [2022-07-12 14:34:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure ep_bd_list_free [2022-07-12 14:34:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_bd_list_free [2022-07-12 14:34:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-12 14:34:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 14:34:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-12 14:34:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 14:34:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 14:34:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure init_ep [2022-07-12 14:34:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ep [2022-07-12 14:34:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-12 14:34:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-12 14:34:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-07-12 14:34:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-07-12 14:34:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-12 14:34:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-12 14:34:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_reset [2022-07-12 14:34:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_reset [2022-07-12 14:34:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 14:34:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 14:34:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-07-12 14:34:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-07-12 14:34:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_disable [2022-07-12 14:34:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_disable [2022-07-12 14:34:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure usb_del_gadget_udc [2022-07-12 14:34:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_del_gadget_udc [2022-07-12 14:34:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 14:34:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 14:34:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 14:34:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 14:34:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2022-07-12 14:34:53,732 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2022-07-12 14:34:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 14:34:53,732 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 14:34:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2022-07-12 14:34:53,732 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2022-07-12 14:34:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_req_complete [2022-07-12 14:34:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_req_complete [2022-07-12 14:34:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_free_request [2022-07-12 14:34:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_free_request [2022-07-12 14:34:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure bd_add_to_bdi [2022-07-12 14:34:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_add_to_bdi [2022-07-12 14:34:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_remove [2022-07-12 14:34:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_remove [2022-07-12 14:34:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2022-07-12 14:34:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2022-07-12 14:34:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 14:34:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-12 14:34:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-12 14:34:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_stop [2022-07-12 14:34:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_stop [2022-07-12 14:34:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 14:34:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-12 14:34:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-12 14:34:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-12 14:34:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-12 14:34:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_isoc [2022-07-12 14:34:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_isoc [2022-07-12 14:34:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-12 14:34:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-12 14:34:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-12 14:34:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-12 14:34:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-12 14:34:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 14:34:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 14:34:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 14:34:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_free_ep [2022-07-12 14:34:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_free_ep [2022-07-12 14:34:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-12 14:34:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 14:34:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-12 14:34:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_notify_xfr [2022-07-12 14:34:53,738 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_notify_xfr [2022-07-12 14:34:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-12 14:34:53,738 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-12 14:34:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-12 14:34:53,739 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-12 14:34:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop_ep [2022-07-12 14:34:53,739 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop_ep [2022-07-12 14:34:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-12 14:34:53,739 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-12 14:34:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_set_stall [2022-07-12 14:34:53,740 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_set_stall [2022-07-12 14:34:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-12 14:34:53,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-12 14:34:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_map_request [2022-07-12 14:34:53,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_map_request [2022-07-12 14:34:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_free [2022-07-12 14:34:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_free [2022-07-12 14:34:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_dbg_bd_list [2022-07-12 14:34:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_dbg_bd_list [2022-07-12 14:34:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure ep_set_halt [2022-07-12 14:34:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_set_halt [2022-07-12 14:34:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-12 14:34:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-12 14:34:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_tbi [2022-07-12 14:34:53,742 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_tbi [2022-07-12 14:34:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-12 14:34:53,742 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-12 14:34:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_init [2022-07-12 14:34:53,742 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_init [2022-07-12 14:34:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_config_ep [2022-07-12 14:34:53,743 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_config_ep [2022-07-12 14:34:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_enable [2022-07-12 14:34:53,743 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_enable [2022-07-12 14:34:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_queue_xfr [2022-07-12 14:34:53,743 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_queue_xfr [2022-07-12 14:34:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_hw_exit [2022-07-12 14:34:53,744 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_hw_exit [2022-07-12 14:34:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-12 14:34:53,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-12 14:34:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 14:34:53,744 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 14:34:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_disable [2022-07-12 14:34:53,745 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_disable [2022-07-12 14:34:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-07-12 14:34:53,745 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-07-12 14:34:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 14:34:53,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 14:34:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-12 14:34:53,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-12 14:34:53,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 14:34:53,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2022-07-12 14:34:53,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-12 14:34:53,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-12 14:34:53,746 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-07-12 14:34:53,746 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-07-12 14:34:53,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 14:34:53,747 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_dequeue [2022-07-12 14:34:53,747 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_dequeue [2022-07-12 14:34:53,747 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_state [2022-07-12 14:34:53,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_state [2022-07-12 14:34:53,747 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-12 14:34:53,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-12 14:34:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 14:34:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_start [2022-07-12 14:34:53,748 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_start [2022-07-12 14:34:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure poll_oip [2022-07-12 14:34:53,748 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_oip [2022-07-12 14:34:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-07-12 14:34:53,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-07-12 14:34:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop [2022-07-12 14:34:53,749 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop [2022-07-12 14:34:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_softconn [2022-07-12 14:34:53,749 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_softconn [2022-07-12 14:34:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_run [2022-07-12 14:34:53,749 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_run [2022-07-12 14:34:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2022-07-12 14:34:53,750 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2022-07-12 14:34:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_submit_cmd [2022-07-12 14:34:53,750 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_submit_cmd [2022-07-12 14:34:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_wakeup [2022-07-12 14:34:53,750 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_wakeup [2022-07-12 14:34:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-12 14:34:53,750 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-12 14:34:53,751 INFO L130 BoogieDeclarations]: Found specification of procedure find_end_bdi [2022-07-12 14:34:53,751 INFO L138 BoogieDeclarations]: Found implementation of procedure find_end_bdi [2022-07-12 14:34:53,751 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_bd [2022-07-12 14:34:53,751 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_bd [2022-07-12 14:34:53,751 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_writel [2022-07-12 14:34:53,751 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_writel [2022-07-12 14:34:53,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 14:34:53,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 14:34:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure chain_table [2022-07-12 14:34:53,752 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_table [2022-07-12 14:34:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_readl [2022-07-12 14:34:53,752 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_readl [2022-07-12 14:34:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_enable [2022-07-12 14:34:53,752 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_enable [2022-07-12 14:34:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-12 14:34:53,753 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-12 14:34:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_probe [2022-07-12 14:34:53,753 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_probe [2022-07-12 14:34:54,383 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 14:34:54,391 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 14:35:02,349 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 14:36:03,287 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 14:36:03,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 14:36:03,311 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 14:36:03,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:36:03 BoogieIcfgContainer [2022-07-12 14:36:03,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 14:36:03,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 14:36:03,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 14:36:03,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 14:36:03,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:34:49" (1/3) ... [2022-07-12 14:36:03,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b743ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:36:03, skipping insertion in model container [2022-07-12 14:36:03,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:34:52" (2/3) ... [2022-07-12 14:36:03,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b743ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:36:03, skipping insertion in model container [2022-07-12 14:36:03,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:36:03" (3/3) ... [2022-07-12 14:36:03,331 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 [2022-07-12 14:36:03,345 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 14:36:03,346 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 14:36:03,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 14:36:03,451 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@3dbf83c3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@106ea956 [2022-07-12 14:36:03,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 14:36:03,462 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) [2022-07-12 14:36:03,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 14:36:03,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:03,493 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] [2022-07-12 14:36:03,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:03,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash -171950750, now seen corresponding path program 1 times [2022-07-12 14:36:03,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:03,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593834547] [2022-07-12 14:36:03,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:03,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:03,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:03,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:03,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 14:36:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:04,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 3365 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:36:04,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-12 14:36:05,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:36:05,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:05,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593834547] [2022-07-12 14:36:05,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593834547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:36:05,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:36:05,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:36:05,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021381676] [2022-07-12 14:36:05,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:36:05,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:36:05,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:05,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:36:05,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:36:05,078 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) [2022-07-12 14:36:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:05,942 INFO L93 Difference]: Finished difference Result 3953 states and 5642 transitions. [2022-07-12 14:36:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:36:05,945 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 [2022-07-12 14:36:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:05,983 INFO L225 Difference]: With dead ends: 3953 [2022-07-12 14:36:05,983 INFO L226 Difference]: Without dead ends: 2471 [2022-07-12 14:36:05,996 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 [2022-07-12 14:36:06,003 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, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 14:36:06,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 4442 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 14:36:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2022-07-12 14:36:06,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2466. [2022-07-12 14:36:06,261 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) [2022-07-12 14:36:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3464 transitions. [2022-07-12 14:36:06,282 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3464 transitions. Word has length 72 [2022-07-12 14:36:06,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:06,283 INFO L495 AbstractCegarLoop]: Abstraction has 2466 states and 3464 transitions. [2022-07-12 14:36:06,284 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) [2022-07-12 14:36:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3464 transitions. [2022-07-12 14:36:06,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-12 14:36:06,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:06,301 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] [2022-07-12 14:36:06,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:06,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:06,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:06,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:06,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1774106033, now seen corresponding path program 1 times [2022-07-12 14:36:06,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:06,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952618877] [2022-07-12 14:36:06,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:06,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:06,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:06,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:06,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 14:36:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:08,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 3596 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 14:36:08,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-07-12 14:36:08,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:36:08,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:08,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952618877] [2022-07-12 14:36:08,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952618877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:36:08,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:36:08,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:36:08,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190060836] [2022-07-12 14:36:08,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:36:08,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:36:08,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:36:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:36:08,282 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) [2022-07-12 14:36:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:08,765 INFO L93 Difference]: Finished difference Result 4940 states and 6961 transitions. [2022-07-12 14:36:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:36:08,766 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 [2022-07-12 14:36:08,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:08,780 INFO L225 Difference]: With dead ends: 4940 [2022-07-12 14:36:08,781 INFO L226 Difference]: Without dead ends: 2472 [2022-07-12 14:36:08,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:36:08,791 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 [2022-07-12 14:36:08,792 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] [2022-07-12 14:36:08,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-07-12 14:36:08,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2472. [2022-07-12 14:36:08,881 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) [2022-07-12 14:36:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3474 transitions. [2022-07-12 14:36:08,897 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3474 transitions. Word has length 152 [2022-07-12 14:36:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:08,898 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 3474 transitions. [2022-07-12 14:36:08,898 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) [2022-07-12 14:36:08,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3474 transitions. [2022-07-12 14:36:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 14:36:08,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:08,904 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] [2022-07-12 14:36:08,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:09,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:09,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1819481269, now seen corresponding path program 1 times [2022-07-12 14:36:09,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:09,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090174838] [2022-07-12 14:36:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:09,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:09,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:09,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:09,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 14:36:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:10,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 3629 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 14:36:10,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-07-12 14:36:10,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:36:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-12 14:36:11,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:11,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090174838] [2022-07-12 14:36:11,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090174838] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:36:11,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:36:11,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-12 14:36:11,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754125686] [2022-07-12 14:36:11,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:36:11,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 14:36:11,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:11,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 14:36:11,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-12 14:36:11,584 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) [2022-07-12 14:36:12,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:12,539 INFO L93 Difference]: Finished difference Result 4952 states and 6981 transitions. [2022-07-12 14:36:12,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 14:36:12,540 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 [2022-07-12 14:36:12,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:12,556 INFO L225 Difference]: With dead ends: 4952 [2022-07-12 14:36:12,556 INFO L226 Difference]: Without dead ends: 2478 [2022-07-12 14:36:12,567 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 [2022-07-12 14:36:12,569 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 [2022-07-12 14:36:12,569 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] [2022-07-12 14:36:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2022-07-12 14:36:12,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2474. [2022-07-12 14:36:12,668 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) [2022-07-12 14:36:12,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3478 transitions. [2022-07-12 14:36:12,684 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3478 transitions. Word has length 155 [2022-07-12 14:36:12,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:12,684 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 3478 transitions. [2022-07-12 14:36:12,685 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) [2022-07-12 14:36:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3478 transitions. [2022-07-12 14:36:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-12 14:36:12,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:12,690 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] [2022-07-12 14:36:12,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:12,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:12,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:12,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:12,904 INFO L85 PathProgramCache]: Analyzing trace with hash 892030863, now seen corresponding path program 2 times [2022-07-12 14:36:12,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:12,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301578293] [2022-07-12 14:36:12,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:36:12,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:12,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:12,912 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:12,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 14:36:13,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:36:13,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:36:13,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:36:13,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-12 14:36:14,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:36:14,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:14,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301578293] [2022-07-12 14:36:14,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301578293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:36:14,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:36:14,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 14:36:14,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872067495] [2022-07-12 14:36:14,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:36:14,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:36:14,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:14,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:36:14,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:36:14,885 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) [2022-07-12 14:36:15,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:15,001 INFO L93 Difference]: Finished difference Result 4431 states and 6244 transitions. [2022-07-12 14:36:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:36:15,002 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 [2022-07-12 14:36:15,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:15,036 INFO L225 Difference]: With dead ends: 4431 [2022-07-12 14:36:15,037 INFO L226 Difference]: Without dead ends: 4428 [2022-07-12 14:36:15,042 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 [2022-07-12 14:36:15,044 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 [2022-07-12 14:36:15,045 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] [2022-07-12 14:36:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2022-07-12 14:36:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4385. [2022-07-12 14:36:15,239 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) [2022-07-12 14:36:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 6170 transitions. [2022-07-12 14:36:15,267 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 6170 transitions. Word has length 158 [2022-07-12 14:36:15,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:15,269 INFO L495 AbstractCegarLoop]: Abstraction has 4385 states and 6170 transitions. [2022-07-12 14:36:15,269 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) [2022-07-12 14:36:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 6170 transitions. [2022-07-12 14:36:15,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-12 14:36:15,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:15,278 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] [2022-07-12 14:36:15,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:15,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:15,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:15,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:15,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2031371136, now seen corresponding path program 1 times [2022-07-12 14:36:15,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:15,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876030995] [2022-07-12 14:36:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:15,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:15,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:15,498 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:15,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 14:36:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:17,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 3979 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 14:36:17,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-12 14:36:17,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:36:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-12 14:36:18,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:18,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876030995] [2022-07-12 14:36:18,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876030995] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:36:18,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:36:18,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-12 14:36:18,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507928259] [2022-07-12 14:36:18,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:36:18,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 14:36:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:18,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 14:36:18,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-12 14:36:18,208 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) [2022-07-12 14:36:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:19,612 INFO L93 Difference]: Finished difference Result 8798 states and 12421 transitions. [2022-07-12 14:36:19,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 14:36:19,613 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 [2022-07-12 14:36:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:19,648 INFO L225 Difference]: With dead ends: 8798 [2022-07-12 14:36:19,649 INFO L226 Difference]: Without dead ends: 4405 [2022-07-12 14:36:19,672 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 [2022-07-12 14:36:19,673 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:36:19,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 20312 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 14:36:19,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4405 states. [2022-07-12 14:36:19,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4405 to 4389. [2022-07-12 14:36:19,835 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) [2022-07-12 14:36:19,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 6178 transitions. [2022-07-12 14:36:19,857 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 6178 transitions. Word has length 200 [2022-07-12 14:36:19,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:19,857 INFO L495 AbstractCegarLoop]: Abstraction has 4389 states and 6178 transitions. [2022-07-12 14:36:19,858 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) [2022-07-12 14:36:19,859 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 6178 transitions. [2022-07-12 14:36:19,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-12 14:36:19,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:19,868 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] [2022-07-12 14:36:19,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:20,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:20,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:20,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:20,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1610400742, now seen corresponding path program 2 times [2022-07-12 14:36:20,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:20,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519395738] [2022-07-12 14:36:20,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:36:20,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:20,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:20,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:20,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 14:36:21,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:36:21,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:36:21,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 3397 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:36:21,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-07-12 14:36:21,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:36:21,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:21,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519395738] [2022-07-12 14:36:21,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519395738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:36:21,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:36:21,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:36:21,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773215891] [2022-07-12 14:36:21,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:36:21,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:36:21,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:21,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:36:21,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:36:21,361 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) [2022-07-12 14:36:21,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:21,964 INFO L93 Difference]: Finished difference Result 8776 states and 12359 transitions. [2022-07-12 14:36:21,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:36:21,965 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 [2022-07-12 14:36:21,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:21,995 INFO L225 Difference]: With dead ends: 8776 [2022-07-12 14:36:21,995 INFO L226 Difference]: Without dead ends: 4391 [2022-07-12 14:36:22,015 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 [2022-07-12 14:36:22,016 INFO L413 NwaCegarLoop]: 2044 mSDtfsCounter, 0 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 14:36:22,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 14:36:22,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4391 states. [2022-07-12 14:36:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4391 to 4391. [2022-07-12 14:36:22,202 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) [2022-07-12 14:36:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6180 transitions. [2022-07-12 14:36:22,223 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6180 transitions. Word has length 203 [2022-07-12 14:36:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:22,223 INFO L495 AbstractCegarLoop]: Abstraction has 4391 states and 6180 transitions. [2022-07-12 14:36:22,224 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) [2022-07-12 14:36:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6180 transitions. [2022-07-12 14:36:22,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-12 14:36:22,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:22,232 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] [2022-07-12 14:36:22,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:22,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:22,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:22,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:22,446 INFO L85 PathProgramCache]: Analyzing trace with hash -756293852, now seen corresponding path program 1 times [2022-07-12 14:36:22,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:22,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991471950] [2022-07-12 14:36:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:22,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:22,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:22,452 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:22,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 14:36:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:23,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 4014 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 14:36:23,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-07-12 14:36:24,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:36:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-07-12 14:36:25,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:25,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991471950] [2022-07-12 14:36:25,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991471950] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:36:25,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:36:25,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-12 14:36:25,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524580012] [2022-07-12 14:36:25,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:36:25,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 14:36:25,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:25,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 14:36:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-12 14:36:25,494 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) [2022-07-12 14:36:27,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:27,003 INFO L93 Difference]: Finished difference Result 8818 states and 12453 transitions. [2022-07-12 14:36:27,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 14:36:27,008 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 [2022-07-12 14:36:27,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:27,036 INFO L225 Difference]: With dead ends: 8818 [2022-07-12 14:36:27,037 INFO L226 Difference]: Without dead ends: 4419 [2022-07-12 14:36:27,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-12 14:36:27,057 INFO L413 NwaCegarLoop]: 2038 mSDtfsCounter, 32 mSDsluCounter, 18281 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:36:27,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 20319 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 14:36:27,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2022-07-12 14:36:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 4395. [2022-07-12 14:36:27,213 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) [2022-07-12 14:36:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 6188 transitions. [2022-07-12 14:36:27,231 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 6188 transitions. Word has length 203 [2022-07-12 14:36:27,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:27,231 INFO L495 AbstractCegarLoop]: Abstraction has 4395 states and 6188 transitions. [2022-07-12 14:36:27,232 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) [2022-07-12 14:36:27,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 6188 transitions. [2022-07-12 14:36:27,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-12 14:36:27,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:27,241 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] [2022-07-12 14:36:27,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:27,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:27,455 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:27,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1580850178, now seen corresponding path program 2 times [2022-07-12 14:36:27,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:27,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246225939] [2022-07-12 14:36:27,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:36:27,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:27,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:27,462 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:27,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-12 14:36:28,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:36:28,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:36:28,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:36:28,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-12 14:36:28,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:36:28,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:28,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246225939] [2022-07-12 14:36:28,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246225939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:36:28,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:36:28,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:36:28,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477537033] [2022-07-12 14:36:28,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:36:28,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:36:28,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:28,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:36:28,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:36:28,702 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) [2022-07-12 14:36:29,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:29,234 INFO L93 Difference]: Finished difference Result 8788 states and 12378 transitions. [2022-07-12 14:36:29,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:36:29,254 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 [2022-07-12 14:36:29,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:29,289 INFO L225 Difference]: With dead ends: 8788 [2022-07-12 14:36:29,289 INFO L226 Difference]: Without dead ends: 4397 [2022-07-12 14:36:29,308 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 [2022-07-12 14:36:29,309 INFO L413 NwaCegarLoop]: 2044 mSDtfsCounter, 0 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 14:36:29,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 14:36:29,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2022-07-12 14:36:29,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 4397. [2022-07-12 14:36:29,446 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) [2022-07-12 14:36:29,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6190 transitions. [2022-07-12 14:36:29,464 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6190 transitions. Word has length 206 [2022-07-12 14:36:29,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:29,466 INFO L495 AbstractCegarLoop]: Abstraction has 4397 states and 6190 transitions. [2022-07-12 14:36:29,466 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) [2022-07-12 14:36:29,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6190 transitions. [2022-07-12 14:36:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-12 14:36:29,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:29,476 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] [2022-07-12 14:36:29,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:29,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:29,696 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:29,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:29,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1332703684, now seen corresponding path program 1 times [2022-07-12 14:36:29,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:29,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446421156] [2022-07-12 14:36:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:29,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:29,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:29,702 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:29,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-12 14:36:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:31,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 14:36:31,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-12 14:36:31,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:36:31,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:31,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446421156] [2022-07-12 14:36:31,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446421156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:36:31,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:36:31,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:36:31,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748105396] [2022-07-12 14:36:31,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:36:31,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:36:31,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:31,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:36:31,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:36:31,761 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) [2022-07-12 14:36:33,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:33,647 INFO L93 Difference]: Finished difference Result 8792 states and 12380 transitions. [2022-07-12 14:36:33,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:36:33,648 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 [2022-07-12 14:36:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:33,681 INFO L225 Difference]: With dead ends: 8792 [2022-07-12 14:36:33,682 INFO L226 Difference]: Without dead ends: 4399 [2022-07-12 14:36:33,700 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 [2022-07-12 14:36:33,702 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, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 14:36:33,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9654 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 14:36:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2022-07-12 14:36:33,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 4399. [2022-07-12 14:36:33,828 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) [2022-07-12 14:36:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 6191 transitions. [2022-07-12 14:36:33,912 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 6191 transitions. Word has length 206 [2022-07-12 14:36:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:33,915 INFO L495 AbstractCegarLoop]: Abstraction has 4399 states and 6191 transitions. [2022-07-12 14:36:33,916 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) [2022-07-12 14:36:33,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 6191 transitions. [2022-07-12 14:36:33,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-12 14:36:33,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:33,924 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] [2022-07-12 14:36:33,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:34,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:34,143 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:34,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:34,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2118258110, now seen corresponding path program 1 times [2022-07-12 14:36:34,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:34,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956848057] [2022-07-12 14:36:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:34,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:34,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:34,150 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:34,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-12 14:36:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:36,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 14:36:36,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-07-12 14:36:36,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:36:36,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:36,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956848057] [2022-07-12 14:36:36,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956848057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:36:36,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:36:36,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:36:36,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452997446] [2022-07-12 14:36:36,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:36:36,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:36:36,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:36,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:36:36,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:36:36,323 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) [2022-07-12 14:36:38,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 14:36:39,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:39,314 INFO L93 Difference]: Finished difference Result 8794 states and 12389 transitions. [2022-07-12 14:36:39,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:36:39,315 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 [2022-07-12 14:36:39,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:39,337 INFO L225 Difference]: With dead ends: 8794 [2022-07-12 14:36:39,337 INFO L226 Difference]: Without dead ends: 4399 [2022-07-12 14:36:39,354 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 [2022-07-12 14:36:39,354 INFO L413 NwaCegarLoop]: 1949 mSDtfsCounter, 43 mSDsluCounter, 7642 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 14:36:39,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 9591 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-12 14:36:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2022-07-12 14:36:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 4399. [2022-07-12 14:36:39,489 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) [2022-07-12 14:36:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 6187 transitions. [2022-07-12 14:36:39,509 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 6187 transitions. Word has length 206 [2022-07-12 14:36:39,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:39,510 INFO L495 AbstractCegarLoop]: Abstraction has 4399 states and 6187 transitions. [2022-07-12 14:36:39,510 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) [2022-07-12 14:36:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 6187 transitions. [2022-07-12 14:36:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-12 14:36:39,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:39,520 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] [2022-07-12 14:36:39,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:39,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:39,743 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:39,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1957854468, now seen corresponding path program 1 times [2022-07-12 14:36:39,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:39,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071021452] [2022-07-12 14:36:39,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:39,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:39,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:39,749 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:39,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-12 14:36:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:41,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 14:36:41,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-12 14:36:42,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:36:42,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:42,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071021452] [2022-07-12 14:36:42,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071021452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:36:42,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:36:42,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:36:42,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085803693] [2022-07-12 14:36:42,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:36:42,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:36:42,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:42,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:36:42,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:36:42,069 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) [2022-07-12 14:36:44,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:44,041 INFO L93 Difference]: Finished difference Result 8794 states and 12381 transitions. [2022-07-12 14:36:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:36:44,041 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 [2022-07-12 14:36:44,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:44,060 INFO L225 Difference]: With dead ends: 8794 [2022-07-12 14:36:44,060 INFO L226 Difference]: Without dead ends: 4399 [2022-07-12 14:36:44,072 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 [2022-07-12 14:36:44,073 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, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 14:36:44,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 9593 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 14:36:44,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2022-07-12 14:36:44,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 4399. [2022-07-12 14:36:44,195 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) [2022-07-12 14:36:44,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 6183 transitions. [2022-07-12 14:36:44,212 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 6183 transitions. Word has length 206 [2022-07-12 14:36:44,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:44,213 INFO L495 AbstractCegarLoop]: Abstraction has 4399 states and 6183 transitions. [2022-07-12 14:36:44,213 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) [2022-07-12 14:36:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 6183 transitions. [2022-07-12 14:36:44,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-12 14:36:44,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:44,221 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] [2022-07-12 14:36:44,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:44,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:44,447 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:44,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:44,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1527766202, now seen corresponding path program 1 times [2022-07-12 14:36:44,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:44,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209440858] [2022-07-12 14:36:44,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:44,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:44,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:44,452 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:44,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-12 14:36:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:46,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 14:36:46,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-12 14:36:46,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:36:46,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:46,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209440858] [2022-07-12 14:36:46,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209440858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:36:46,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:36:46,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:36:46,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646575223] [2022-07-12 14:36:46,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:36:46,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:36:46,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:46,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:36:46,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:36:46,720 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) [2022-07-12 14:36:46,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:46,960 INFO L93 Difference]: Finished difference Result 4442 states and 6227 transitions. [2022-07-12 14:36:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:36:46,961 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 [2022-07-12 14:36:46,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:46,979 INFO L225 Difference]: With dead ends: 4442 [2022-07-12 14:36:46,979 INFO L226 Difference]: Without dead ends: 4439 [2022-07-12 14:36:46,983 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 [2022-07-12 14:36:46,984 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 [2022-07-12 14:36:46,984 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] [2022-07-12 14:36:46,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2022-07-12 14:36:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 4439. [2022-07-12 14:36:47,104 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) [2022-07-12 14:36:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4439 states to 4439 states and 6223 transitions. [2022-07-12 14:36:47,120 INFO L78 Accepts]: Start accepts. Automaton has 4439 states and 6223 transitions. Word has length 206 [2022-07-12 14:36:47,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:47,120 INFO L495 AbstractCegarLoop]: Abstraction has 4439 states and 6223 transitions. [2022-07-12 14:36:47,120 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) [2022-07-12 14:36:47,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4439 states and 6223 transitions. [2022-07-12 14:36:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-12 14:36:47,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:47,131 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] [2022-07-12 14:36:47,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:47,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:47,355 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:47,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:47,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1888062237, now seen corresponding path program 1 times [2022-07-12 14:36:47,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:47,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285249016] [2022-07-12 14:36:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:47,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:47,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:47,361 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:47,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-12 14:36:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:49,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 4150 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-12 14:36:49,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-12 14:36:50,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:36:50,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:50,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285249016] [2022-07-12 14:36:50,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285249016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:36:50,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:36:50,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 14:36:50,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085861414] [2022-07-12 14:36:50,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:36:50,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 14:36:50,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:50,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 14:36:50,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 14:36:50,139 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) [2022-07-12 14:36:50,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:50,364 INFO L93 Difference]: Finished difference Result 8914 states and 12511 transitions. [2022-07-12 14:36:50,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:36:50,365 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 [2022-07-12 14:36:50,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:50,386 INFO L225 Difference]: With dead ends: 8914 [2022-07-12 14:36:50,386 INFO L226 Difference]: Without dead ends: 4479 [2022-07-12 14:36:50,400 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 [2022-07-12 14:36:50,401 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:36:50,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12223 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:36:50,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4479 states. [2022-07-12 14:36:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4479 to 4467. [2022-07-12 14:36:50,521 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) [2022-07-12 14:36:50,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6263 transitions. [2022-07-12 14:36:50,540 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6263 transitions. Word has length 239 [2022-07-12 14:36:50,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:50,542 INFO L495 AbstractCegarLoop]: Abstraction has 4467 states and 6263 transitions. [2022-07-12 14:36:50,542 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) [2022-07-12 14:36:50,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6263 transitions. [2022-07-12 14:36:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-07-12 14:36:50,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:50,555 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] [2022-07-12 14:36:50,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:50,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:50,776 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash 424726677, now seen corresponding path program 1 times [2022-07-12 14:36:50,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:50,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351121378] [2022-07-12 14:36:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:50,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:50,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:50,782 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:50,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-12 14:36:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:53,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 4262 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 14:36:53,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-07-12 14:36:53,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:36:53,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:53,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351121378] [2022-07-12 14:36:53,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351121378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:36:53,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:36:53,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:36:53,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137166387] [2022-07-12 14:36:53,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:36:53,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:36:53,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:53,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:36:53,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:36:53,444 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) [2022-07-12 14:36:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:53,594 INFO L93 Difference]: Finished difference Result 4574 states and 6420 transitions. [2022-07-12 14:36:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:36:53,595 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 [2022-07-12 14:36:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:53,616 INFO L225 Difference]: With dead ends: 4574 [2022-07-12 14:36:53,616 INFO L226 Difference]: Without dead ends: 4571 [2022-07-12 14:36:53,620 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 [2022-07-12 14:36:53,621 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 [2022-07-12 14:36:53,621 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] [2022-07-12 14:36:53,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2022-07-12 14:36:53,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 4483. [2022-07-12 14:36:53,748 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) [2022-07-12 14:36:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 6275 transitions. [2022-07-12 14:36:53,808 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 6275 transitions. Word has length 289 [2022-07-12 14:36:53,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:53,809 INFO L495 AbstractCegarLoop]: Abstraction has 4483 states and 6275 transitions. [2022-07-12 14:36:53,809 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) [2022-07-12 14:36:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 6275 transitions. [2022-07-12 14:36:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-07-12 14:36:53,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:53,827 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] [2022-07-12 14:36:53,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:54,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:54,056 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:54,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:54,056 INFO L85 PathProgramCache]: Analyzing trace with hash 481023157, now seen corresponding path program 1 times [2022-07-12 14:36:54,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:54,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133608170] [2022-07-12 14:36:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:54,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:54,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:54,061 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:54,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-12 14:36:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:56,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 4863 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:36:56,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:36:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-07-12 14:36:56,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:36:56,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:36:56,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133608170] [2022-07-12 14:36:56,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133608170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:36:56,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:36:56,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:36:56,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467641711] [2022-07-12 14:36:56,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:36:56,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:36:56,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:36:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:36:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:36:56,564 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) [2022-07-12 14:36:56,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:36:56,910 INFO L93 Difference]: Finished difference Result 11440 states and 15991 transitions. [2022-07-12 14:36:56,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:36:56,911 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 [2022-07-12 14:36:56,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:36:56,938 INFO L225 Difference]: With dead ends: 11440 [2022-07-12 14:36:56,939 INFO L226 Difference]: Without dead ends: 6955 [2022-07-12 14:36:56,955 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 [2022-07-12 14:36:56,956 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 14:36:56,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 5065 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 14:36:56,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6955 states. [2022-07-12 14:36:57,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6955 to 6946. [2022-07-12 14:36:57,166 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) [2022-07-12 14:36:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 9685 transitions. [2022-07-12 14:36:57,193 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 9685 transitions. Word has length 356 [2022-07-12 14:36:57,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:36:57,194 INFO L495 AbstractCegarLoop]: Abstraction has 6946 states and 9685 transitions. [2022-07-12 14:36:57,195 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) [2022-07-12 14:36:57,195 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 9685 transitions. [2022-07-12 14:36:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-07-12 14:36:57,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:36:57,229 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] [2022-07-12 14:36:57,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-12 14:36:57,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:36:57,456 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:36:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:36:57,456 INFO L85 PathProgramCache]: Analyzing trace with hash 666460051, now seen corresponding path program 1 times [2022-07-12 14:36:57,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:36:57,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664856891] [2022-07-12 14:36:57,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:36:57,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:36:57,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:36:57,462 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:36:57,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-12 14:36:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:36:59,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 4863 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:36:59,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:37:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-07-12 14:37:00,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:37:00,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:37:00,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664856891] [2022-07-12 14:37:00,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664856891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:37:00,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:37:00,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 14:37:00,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196783972] [2022-07-12 14:37:00,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:37:00,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:37:00,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:37:00,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:37:00,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:37:00,154 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) [2022-07-12 14:37:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:37:00,429 INFO L93 Difference]: Finished difference Result 18281 states and 25488 transitions. [2022-07-12 14:37:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:37:00,430 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 [2022-07-12 14:37:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:37:00,483 INFO L225 Difference]: With dead ends: 18281 [2022-07-12 14:37:00,483 INFO L226 Difference]: Without dead ends: 11339 [2022-07-12 14:37:00,511 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 [2022-07-12 14:37:00,511 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 [2022-07-12 14:37:00,512 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] [2022-07-12 14:37:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11339 states. [2022-07-12 14:37:00,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11339 to 11336. [2022-07-12 14:37:00,977 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) [2022-07-12 14:37:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11336 states to 11336 states and 15799 transitions. [2022-07-12 14:37:01,026 INFO L78 Accepts]: Start accepts. Automaton has 11336 states and 15799 transitions. Word has length 356 [2022-07-12 14:37:01,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:37:01,026 INFO L495 AbstractCegarLoop]: Abstraction has 11336 states and 15799 transitions. [2022-07-12 14:37:01,027 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) [2022-07-12 14:37:01,027 INFO L276 IsEmpty]: Start isEmpty. Operand 11336 states and 15799 transitions. [2022-07-12 14:37:01,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-07-12 14:37:01,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:37:01,069 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] [2022-07-12 14:37:01,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-12 14:37:01,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:37:01,296 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:37:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:37:01,296 INFO L85 PathProgramCache]: Analyzing trace with hash -775352991, now seen corresponding path program 1 times [2022-07-12 14:37:01,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:37:01,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015855576] [2022-07-12 14:37:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:37:01,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:37:01,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:37:01,303 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:37:01,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-12 14:37:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:37:03,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 5041 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 14:37:03,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:37:03,872 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-07-12 14:37:03,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:37:03,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:37:03,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015855576] [2022-07-12 14:37:03,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015855576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:37:03,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:37:03,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:37:03,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564363240] [2022-07-12 14:37:03,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:37:03,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:37:03,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:37:03,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:37:03,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:37:03,874 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) [2022-07-12 14:37:05,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:37:05,801 INFO L93 Difference]: Finished difference Result 22418 states and 31267 transitions. [2022-07-12 14:37:05,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:37:05,802 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 [2022-07-12 14:37:05,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:37:05,849 INFO L225 Difference]: With dead ends: 22418 [2022-07-12 14:37:05,849 INFO L226 Difference]: Without dead ends: 11336 [2022-07-12 14:37:05,885 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 [2022-07-12 14:37:05,886 INFO L413 NwaCegarLoop]: 1947 mSDtfsCounter, 174 mSDsluCounter, 7476 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 14:37:05,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 9423 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 14:37:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11336 states. [2022-07-12 14:37:06,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11336 to 11336. [2022-07-12 14:37:06,288 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) [2022-07-12 14:37:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11336 states to 11336 states and 15791 transitions. [2022-07-12 14:37:06,338 INFO L78 Accepts]: Start accepts. Automaton has 11336 states and 15791 transitions. Word has length 383 [2022-07-12 14:37:06,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:37:06,339 INFO L495 AbstractCegarLoop]: Abstraction has 11336 states and 15791 transitions. [2022-07-12 14:37:06,339 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) [2022-07-12 14:37:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 11336 states and 15791 transitions. [2022-07-12 14:37:06,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-07-12 14:37:06,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:37:06,375 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] [2022-07-12 14:37:06,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-12 14:37:06,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:37:06,596 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:37:06,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:37:06,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1182376477, now seen corresponding path program 1 times [2022-07-12 14:37:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:37:06,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698447927] [2022-07-12 14:37:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:37:06,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:37:06,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:37:06,603 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:37:06,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-12 14:37:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:37:09,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 5041 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:37:09,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:37:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-07-12 14:37:09,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:37:09,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:37:09,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698447927] [2022-07-12 14:37:09,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698447927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:37:09,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:37:09,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:37:09,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157045634] [2022-07-12 14:37:09,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:37:09,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:37:09,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:37:09,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:37:09,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:37:09,111 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) [2022-07-12 14:37:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:37:09,871 INFO L93 Difference]: Finished difference Result 31073 states and 43299 transitions. [2022-07-12 14:37:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:37:09,872 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 [2022-07-12 14:37:09,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:37:09,946 INFO L225 Difference]: With dead ends: 31073 [2022-07-12 14:37:09,946 INFO L226 Difference]: Without dead ends: 19991 [2022-07-12 14:37:09,987 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 [2022-07-12 14:37:09,988 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 [2022-07-12 14:37:09,988 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] [2022-07-12 14:37:10,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19991 states. [2022-07-12 14:37:10,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19991 to 11368. [2022-07-12 14:37:10,615 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) [2022-07-12 14:37:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11368 states to 11368 states and 15823 transitions. [2022-07-12 14:37:10,656 INFO L78 Accepts]: Start accepts. Automaton has 11368 states and 15823 transitions. Word has length 383 [2022-07-12 14:37:10,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:37:10,656 INFO L495 AbstractCegarLoop]: Abstraction has 11368 states and 15823 transitions. [2022-07-12 14:37:10,657 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) [2022-07-12 14:37:10,657 INFO L276 IsEmpty]: Start isEmpty. Operand 11368 states and 15823 transitions. [2022-07-12 14:37:10,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-07-12 14:37:10,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:37:10,695 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] [2022-07-12 14:37:10,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-12 14:37:10,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:37:10,916 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:37:10,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:37:10,916 INFO L85 PathProgramCache]: Analyzing trace with hash -899204884, now seen corresponding path program 1 times [2022-07-12 14:37:10,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:37:10,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615924799] [2022-07-12 14:37:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:37:10,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:37:10,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:37:10,921 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) [2022-07-12 14:37:10,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-12 14:37:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:37:13,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 5129 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 14:37:13,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:37:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2022-07-12 14:37:13,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:37:13,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:37:13,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615924799] [2022-07-12 14:37:13,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615924799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:37:13,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:37:13,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 14:37:13,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3513700] [2022-07-12 14:37:13,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:37:13,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 14:37:13,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:37:13,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 14:37:13,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 14:37:13,593 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) [2022-07-12 14:37:16,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 14:37:17,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:37:17,665 INFO L93 Difference]: Finished difference Result 22548 states and 31429 transitions. [2022-07-12 14:37:17,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:37:17,666 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 [2022-07-12 14:37:17,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:37:17,703 INFO L225 Difference]: With dead ends: 22548 [2022-07-12 14:37:17,703 INFO L226 Difference]: Without dead ends: 11434 [2022-07-12 14:37:17,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 14:37:17,730 INFO L413 NwaCegarLoop]: 2037 mSDtfsCounter, 9 mSDsluCounter, 10167 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 3.7s IncrementalHoareTripleChecker+Time [2022-07-12 14:37:17,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 12204 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-07-12 14:37:17,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11434 states. [2022-07-12 14:37:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11434 to 11416. [2022-07-12 14:37:18,151 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) [2022-07-12 14:37:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11416 states to 11416 states and 15903 transitions. [2022-07-12 14:37:18,186 INFO L78 Accepts]: Start accepts. Automaton has 11416 states and 15903 transitions. Word has length 410 [2022-07-12 14:37:18,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:37:18,187 INFO L495 AbstractCegarLoop]: Abstraction has 11416 states and 15903 transitions. [2022-07-12 14:37:18,187 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) [2022-07-12 14:37:18,187 INFO L276 IsEmpty]: Start isEmpty. Operand 11416 states and 15903 transitions. [2022-07-12 14:37:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-07-12 14:37:18,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:37:18,216 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] [2022-07-12 14:37:18,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-07-12 14:37:18,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:37:18,432 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:37:18,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:37:18,432 INFO L85 PathProgramCache]: Analyzing trace with hash -954835870, now seen corresponding path program 1 times [2022-07-12 14:37:18,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:37:18,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361353487] [2022-07-12 14:37:18,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:37:18,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:37:18,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:37:18,436 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) [2022-07-12 14:37:18,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-12 14:37:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:37:20,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 5172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 14:37:20,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:37:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-07-12 14:37:20,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:37:20,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:37:20,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361353487] [2022-07-12 14:37:20,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361353487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:37:20,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:37:20,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:37:20,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912582799] [2022-07-12 14:37:20,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:37:20,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:37:20,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:37:20,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:37:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:37:20,958 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) [2022-07-12 14:37:21,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:37:21,971 INFO L93 Difference]: Finished difference Result 31305 states and 43627 transitions. [2022-07-12 14:37:21,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:37:21,972 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 [2022-07-12 14:37:21,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:37:22,055 INFO L225 Difference]: With dead ends: 31305 [2022-07-12 14:37:22,056 INFO L226 Difference]: Without dead ends: 20143 [2022-07-12 14:37:22,093 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 [2022-07-12 14:37:22,095 INFO L413 NwaCegarLoop]: 3079 mSDtfsCounter, 2028 mSDsluCounter, 8178 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-07-12 14:37:22,095 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] [2022-07-12 14:37:22,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20143 states. [2022-07-12 14:37:22,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20143 to 11416. [2022-07-12 14:37:22,642 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) [2022-07-12 14:37:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11416 states to 11416 states and 15903 transitions. [2022-07-12 14:37:22,679 INFO L78 Accepts]: Start accepts. Automaton has 11416 states and 15903 transitions. Word has length 430 [2022-07-12 14:37:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:37:22,679 INFO L495 AbstractCegarLoop]: Abstraction has 11416 states and 15903 transitions. [2022-07-12 14:37:22,680 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) [2022-07-12 14:37:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 11416 states and 15903 transitions. [2022-07-12 14:37:22,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-07-12 14:37:22,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:37:22,716 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] [2022-07-12 14:37:22,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-07-12 14:37:22,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:37:22,917 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:37:22,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:37:22,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2004896543, now seen corresponding path program 1 times [2022-07-12 14:37:22,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:37:22,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123272853] [2022-07-12 14:37:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:37:22,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:37:22,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:37:22,922 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) [2022-07-12 14:37:22,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-12 14:37:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:37:26,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 5679 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 14:37:26,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:37:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-07-12 14:37:26,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:37:26,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:37:26,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123272853] [2022-07-12 14:37:26,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123272853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:37:26,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:37:26,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:37:26,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115823606] [2022-07-12 14:37:26,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:37:26,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:37:26,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:37:26,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:37:26,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:37:26,206 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) [2022-07-12 14:37:27,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:37:27,463 INFO L93 Difference]: Finished difference Result 23874 states and 33443 transitions. [2022-07-12 14:37:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:37:27,464 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 [2022-07-12 14:37:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:37:27,516 INFO L225 Difference]: With dead ends: 23874 [2022-07-12 14:37:27,517 INFO L226 Difference]: Without dead ends: 12712 [2022-07-12 14:37:27,548 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 [2022-07-12 14:37:27,549 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 143 mSDsluCounter, 8596 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:37:27,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 10776 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 14:37:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12712 states. [2022-07-12 14:37:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12712 to 11456. [2022-07-12 14:37:28,048 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) [2022-07-12 14:37:28,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11456 states to 11456 states and 15951 transitions. [2022-07-12 14:37:28,097 INFO L78 Accepts]: Start accepts. Automaton has 11456 states and 15951 transitions. Word has length 504 [2022-07-12 14:37:28,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:37:28,098 INFO L495 AbstractCegarLoop]: Abstraction has 11456 states and 15951 transitions. [2022-07-12 14:37:28,099 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) [2022-07-12 14:37:28,099 INFO L276 IsEmpty]: Start isEmpty. Operand 11456 states and 15951 transitions. [2022-07-12 14:37:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-07-12 14:37:28,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:37:28,130 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] [2022-07-12 14:37:28,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-07-12 14:37:28,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:37:28,352 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:37:28,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:37:28,352 INFO L85 PathProgramCache]: Analyzing trace with hash 95859240, now seen corresponding path program 1 times [2022-07-12 14:37:28,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:37:28,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743206017] [2022-07-12 14:37:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:37:28,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:37:28,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:37:28,357 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) [2022-07-12 14:37:28,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-12 14:37:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:37:31,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 5679 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 14:37:31,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:37:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-07-12 14:37:31,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:37:31,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:37:31,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743206017] [2022-07-12 14:37:31,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743206017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:37:31,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:37:31,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:37:31,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92944447] [2022-07-12 14:37:31,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:37:31,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:37:31,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:37:31,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:37:31,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:37:31,453 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) [2022-07-12 14:37:32,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:37:32,794 INFO L93 Difference]: Finished difference Result 23482 states and 32811 transitions. [2022-07-12 14:37:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:37:32,795 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 [2022-07-12 14:37:32,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:37:32,828 INFO L225 Difference]: With dead ends: 23482 [2022-07-12 14:37:32,828 INFO L226 Difference]: Without dead ends: 12280 [2022-07-12 14:37:32,850 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 [2022-07-12 14:37:32,851 INFO L413 NwaCegarLoop]: 2138 mSDtfsCounter, 126 mSDsluCounter, 8407 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 14:37:32,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 10545 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 14:37:32,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12280 states. [2022-07-12 14:37:33,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12280 to 11472. [2022-07-12 14:37:33,184 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) [2022-07-12 14:37:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 15967 transitions. [2022-07-12 14:37:33,218 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 15967 transitions. Word has length 504 [2022-07-12 14:37:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:37:33,219 INFO L495 AbstractCegarLoop]: Abstraction has 11472 states and 15967 transitions. [2022-07-12 14:37:33,219 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) [2022-07-12 14:37:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 15967 transitions. [2022-07-12 14:37:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-07-12 14:37:33,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:37:33,251 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] [2022-07-12 14:37:33,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-12 14:37:33,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:37:33,464 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:37:33,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:37:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash 415905805, now seen corresponding path program 1 times [2022-07-12 14:37:33,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:37:33,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435201116] [2022-07-12 14:37:33,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:37:33,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:37:33,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:37:33,469 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) [2022-07-12 14:37:33,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-12 14:37:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:37:36,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 5695 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 14:37:36,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:37:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2022-07-12 14:37:36,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:37:36,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:37:36,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435201116] [2022-07-12 14:37:36,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435201116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:37:36,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:37:36,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:37:36,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558463539] [2022-07-12 14:37:36,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:37:36,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:37:36,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:37:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:37:36,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:37:36,854 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) [2022-07-12 14:37:39,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:37:39,285 INFO L93 Difference]: Finished difference Result 23882 states and 33411 transitions. [2022-07-12 14:37:39,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:37:39,286 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 [2022-07-12 14:37:39,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:37:39,332 INFO L225 Difference]: With dead ends: 23882 [2022-07-12 14:37:39,333 INFO L226 Difference]: Without dead ends: 12664 [2022-07-12 14:37:39,362 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 [2022-07-12 14:37:39,363 INFO L413 NwaCegarLoop]: 2094 mSDtfsCounter, 135 mSDsluCounter, 8151 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:37:39,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 10245 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 14:37:39,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12664 states. [2022-07-12 14:37:39,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12664 to 11472. [2022-07-12 14:37:39,832 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) [2022-07-12 14:37:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 15959 transitions. [2022-07-12 14:37:39,870 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 15959 transitions. Word has length 507 [2022-07-12 14:37:39,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:37:39,871 INFO L495 AbstractCegarLoop]: Abstraction has 11472 states and 15959 transitions. [2022-07-12 14:37:39,871 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) [2022-07-12 14:37:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 15959 transitions. [2022-07-12 14:37:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-07-12 14:37:39,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:37:39,906 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] [2022-07-12 14:37:39,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-12 14:37:40,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:37:40,111 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:37:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:37:40,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1243392181, now seen corresponding path program 1 times [2022-07-12 14:37:40,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:37:40,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142998951] [2022-07-12 14:37:40,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:37:40,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:37:40,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:37:40,117 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) [2022-07-12 14:37:40,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-12 14:37:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:37:43,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 5695 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 14:37:43,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:37:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2022-07-12 14:37:43,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:37:43,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:37:43,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142998951] [2022-07-12 14:37:43,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142998951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:37:43,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:37:43,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:37:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358000931] [2022-07-12 14:37:43,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:37:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:37:43,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:37:43,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:37:43,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:37:43,638 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) [2022-07-12 14:37:45,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:37:45,987 INFO L93 Difference]: Finished difference Result 22690 states and 31595 transitions. [2022-07-12 14:37:45,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:37:45,988 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 [2022-07-12 14:37:45,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:37:46,027 INFO L225 Difference]: With dead ends: 22690 [2022-07-12 14:37:46,027 INFO L226 Difference]: Without dead ends: 11472 [2022-07-12 14:37:46,055 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 [2022-07-12 14:37:46,055 INFO L413 NwaCegarLoop]: 1945 mSDtfsCounter, 11 mSDsluCounter, 7667 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:37:46,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 9612 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 14:37:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11472 states. [2022-07-12 14:37:46,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11472 to 11472. [2022-07-12 14:37:46,450 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) [2022-07-12 14:37:46,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 15951 transitions. [2022-07-12 14:37:46,481 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 15951 transitions. Word has length 507 [2022-07-12 14:37:46,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:37:46,482 INFO L495 AbstractCegarLoop]: Abstraction has 11472 states and 15951 transitions. [2022-07-12 14:37:46,482 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) [2022-07-12 14:37:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 15951 transitions. [2022-07-12 14:37:46,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-07-12 14:37:46,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:37:46,502 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] [2022-07-12 14:37:46,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-07-12 14:37:46,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:37:46,703 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:37:46,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:37:46,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1891408947, now seen corresponding path program 1 times [2022-07-12 14:37:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:37:46,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182501333] [2022-07-12 14:37:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:37:46,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:37:46,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:37:46,710 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) [2022-07-12 14:37:46,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-12 14:37:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:37:50,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 5695 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 14:37:50,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:37:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-07-12 14:37:50,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:37:50,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:37:50,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182501333] [2022-07-12 14:37:50,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182501333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:37:50,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:37:50,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:37:50,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883126076] [2022-07-12 14:37:50,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:37:50,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:37:50,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:37:50,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:37:50,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:37:50,372 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) [2022-07-12 14:37:52,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:37:52,717 INFO L93 Difference]: Finished difference Result 22940 states and 31942 transitions. [2022-07-12 14:37:52,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:37:52,718 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 [2022-07-12 14:37:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:37:52,755 INFO L225 Difference]: With dead ends: 22940 [2022-07-12 14:37:52,755 INFO L226 Difference]: Without dead ends: 11472 [2022-07-12 14:37:52,783 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 [2022-07-12 14:37:52,784 INFO L413 NwaCegarLoop]: 1944 mSDtfsCounter, 11 mSDsluCounter, 7664 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:37:52,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 9608 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 14:37:52,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11472 states. [2022-07-12 14:37:53,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11472 to 11472. [2022-07-12 14:37:53,176 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) [2022-07-12 14:37:53,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 15940 transitions. [2022-07-12 14:37:53,210 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 15940 transitions. Word has length 507 [2022-07-12 14:37:53,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:37:53,210 INFO L495 AbstractCegarLoop]: Abstraction has 11472 states and 15940 transitions. [2022-07-12 14:37:53,210 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) [2022-07-12 14:37:53,210 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 15940 transitions. [2022-07-12 14:37:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-07-12 14:37:53,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:37:53,233 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] [2022-07-12 14:37:53,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-12 14:37:53,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:37:53,434 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:37:53,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:37:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash 393286223, now seen corresponding path program 1 times [2022-07-12 14:37:53,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:37:53,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173967949] [2022-07-12 14:37:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:37:53,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:37:53,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:37:53,439 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) [2022-07-12 14:37:53,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-12 14:37:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:37:57,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 5695 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:37:57,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:37:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2022-07-12 14:37:57,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:37:57,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:37:57,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173967949] [2022-07-12 14:37:57,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173967949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:37:57,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:37:57,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:37:57,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536900595] [2022-07-12 14:37:57,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:37:57,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:37:57,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:37:57,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:37:57,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:37:57,122 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) [2022-07-12 14:37:58,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:37:58,158 INFO L93 Difference]: Finished difference Result 22752 states and 31632 transitions. [2022-07-12 14:37:58,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:37:58,159 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 [2022-07-12 14:37:58,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:37:58,187 INFO L225 Difference]: With dead ends: 22752 [2022-07-12 14:37:58,187 INFO L226 Difference]: Without dead ends: 11534 [2022-07-12 14:37:58,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:37:58,206 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 [2022-07-12 14:37:58,206 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] [2022-07-12 14:37:58,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11534 states. [2022-07-12 14:37:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11534 to 11504. [2022-07-12 14:37:58,519 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) [2022-07-12 14:37:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11504 states to 11504 states and 15976 transitions. [2022-07-12 14:37:58,553 INFO L78 Accepts]: Start accepts. Automaton has 11504 states and 15976 transitions. Word has length 507 [2022-07-12 14:37:58,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:37:58,554 INFO L495 AbstractCegarLoop]: Abstraction has 11504 states and 15976 transitions. [2022-07-12 14:37:58,554 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) [2022-07-12 14:37:58,554 INFO L276 IsEmpty]: Start isEmpty. Operand 11504 states and 15976 transitions. [2022-07-12 14:37:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-07-12 14:37:58,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:37:58,576 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] [2022-07-12 14:37:58,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-12 14:37:58,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:37:58,782 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:37:58,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:37:58,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1034621758, now seen corresponding path program 1 times [2022-07-12 14:37:58,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:37:58,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446286158] [2022-07-12 14:37:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:37:58,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:37:58,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:37:58,787 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) [2022-07-12 14:37:58,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-12 14:38:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:02,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 5750 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 14:38:02,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2022-07-12 14:38:02,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:02,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:02,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446286158] [2022-07-12 14:38:02,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446286158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:02,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:02,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 14:38:02,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939710499] [2022-07-12 14:38:02,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:02,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 14:38:02,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 14:38:02,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 14:38:02,637 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) [2022-07-12 14:38:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:03,226 INFO L93 Difference]: Finished difference Result 23169 states and 32273 transitions. [2022-07-12 14:38:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 14:38:03,227 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 [2022-07-12 14:38:03,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:03,261 INFO L225 Difference]: With dead ends: 23169 [2022-07-12 14:38:03,262 INFO L226 Difference]: Without dead ends: 11647 [2022-07-12 14:38:03,287 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 [2022-07-12 14:38:03,288 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 [2022-07-12 14:38:03,288 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] [2022-07-12 14:38:03,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11647 states. [2022-07-12 14:38:03,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11647 to 11515. [2022-07-12 14:38:03,674 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) [2022-07-12 14:38:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11515 states to 11515 states and 15987 transitions. [2022-07-12 14:38:03,709 INFO L78 Accepts]: Start accepts. Automaton has 11515 states and 15987 transitions. Word has length 521 [2022-07-12 14:38:03,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:03,709 INFO L495 AbstractCegarLoop]: Abstraction has 11515 states and 15987 transitions. [2022-07-12 14:38:03,710 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) [2022-07-12 14:38:03,710 INFO L276 IsEmpty]: Start isEmpty. Operand 11515 states and 15987 transitions. [2022-07-12 14:38:03,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-07-12 14:38:03,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:03,732 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] [2022-07-12 14:38:03,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-12 14:38:03,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:03,933 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:03,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash 292819295, now seen corresponding path program 1 times [2022-07-12 14:38:03,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:03,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100157395] [2022-07-12 14:38:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:03,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:03,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:03,939 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) [2022-07-12 14:38:03,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-12 14:38:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:08,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 5798 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:38:08,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 272 proven. 1 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2022-07-12 14:38:08,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:38:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-07-12 14:38:09,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:09,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100157395] [2022-07-12 14:38:09,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100157395] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:38:09,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:38:09,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-12 14:38:09,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670684508] [2022-07-12 14:38:09,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:38:09,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 14:38:09,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:09,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 14:38:09,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:38:09,035 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) [2022-07-12 14:38:09,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:09,844 INFO L93 Difference]: Finished difference Result 23521 states and 32817 transitions. [2022-07-12 14:38:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 14:38:09,845 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 [2022-07-12 14:38:09,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:09,875 INFO L225 Difference]: With dead ends: 23521 [2022-07-12 14:38:09,875 INFO L226 Difference]: Without dead ends: 11966 [2022-07-12 14:38:09,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1082 GetRequests, 1074 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-12 14:38:09,896 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:09,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 12197 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 14:38:09,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11966 states. [2022-07-12 14:38:10,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11966 to 11746. [2022-07-12 14:38:10,234 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) [2022-07-12 14:38:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11746 states to 11746 states and 16317 transitions. [2022-07-12 14:38:10,274 INFO L78 Accepts]: Start accepts. Automaton has 11746 states and 16317 transitions. Word has length 541 [2022-07-12 14:38:10,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:10,274 INFO L495 AbstractCegarLoop]: Abstraction has 11746 states and 16317 transitions. [2022-07-12 14:38:10,274 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) [2022-07-12 14:38:10,274 INFO L276 IsEmpty]: Start isEmpty. Operand 11746 states and 16317 transitions. [2022-07-12 14:38:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-07-12 14:38:10,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:10,299 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] [2022-07-12 14:38:10,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-07-12 14:38:10,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:10,499 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2056719511, now seen corresponding path program 1 times [2022-07-12 14:38:10,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:10,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651278593] [2022-07-12 14:38:10,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:10,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:10,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:10,504 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) [2022-07-12 14:38:10,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-12 14:38:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:14,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 5847 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 14:38:14,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2022-07-12 14:38:14,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:14,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:14,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651278593] [2022-07-12 14:38:14,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651278593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:14,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:14,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:38:14,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837957383] [2022-07-12 14:38:14,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:14,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:38:14,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:14,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:38:14,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:38:14,919 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) [2022-07-12 14:38:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:16,890 INFO L93 Difference]: Finished difference Result 23510 states and 32757 transitions. [2022-07-12 14:38:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:38:16,891 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 [2022-07-12 14:38:16,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:16,931 INFO L225 Difference]: With dead ends: 23510 [2022-07-12 14:38:16,931 INFO L226 Difference]: Without dead ends: 11768 [2022-07-12 14:38:16,961 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 [2022-07-12 14:38:16,962 INFO L413 NwaCegarLoop]: 1943 mSDtfsCounter, 3 mSDsluCounter, 7672 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:16,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9615 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 14:38:16,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11768 states. [2022-07-12 14:38:17,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11768 to 11746. [2022-07-12 14:38:17,381 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) [2022-07-12 14:38:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11746 states to 11746 states and 16306 transitions. [2022-07-12 14:38:17,414 INFO L78 Accepts]: Start accepts. Automaton has 11746 states and 16306 transitions. Word has length 542 [2022-07-12 14:38:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:17,415 INFO L495 AbstractCegarLoop]: Abstraction has 11746 states and 16306 transitions. [2022-07-12 14:38:17,415 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) [2022-07-12 14:38:17,415 INFO L276 IsEmpty]: Start isEmpty. Operand 11746 states and 16306 transitions. [2022-07-12 14:38:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-07-12 14:38:17,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:17,438 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] [2022-07-12 14:38:17,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-07-12 14:38:17,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:17,640 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:17,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:17,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1749173401, now seen corresponding path program 1 times [2022-07-12 14:38:17,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:17,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930961219] [2022-07-12 14:38:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:17,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:17,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:17,645 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) [2022-07-12 14:38:17,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-12 14:38:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:21,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 5847 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:38:21,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2022-07-12 14:38:22,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:22,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:22,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930961219] [2022-07-12 14:38:22,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930961219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:22,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:22,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:38:22,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716883712] [2022-07-12 14:38:22,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:22,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:38:22,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:22,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:38:22,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:38:22,032 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) [2022-07-12 14:38:22,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:22,802 INFO L93 Difference]: Finished difference Result 23278 states and 32345 transitions. [2022-07-12 14:38:22,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:38:22,803 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 [2022-07-12 14:38:22,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:22,840 INFO L225 Difference]: With dead ends: 23278 [2022-07-12 14:38:22,840 INFO L226 Difference]: Without dead ends: 11808 [2022-07-12 14:38:22,871 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 [2022-07-12 14:38:22,873 INFO L413 NwaCegarLoop]: 2036 mSDtfsCounter, 5 mSDsluCounter, 6092 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-07-12 14:38:22,873 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] [2022-07-12 14:38:22,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11808 states. [2022-07-12 14:38:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11808 to 11778. [2022-07-12 14:38:23,300 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) [2022-07-12 14:38:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11778 states to 11778 states and 16350 transitions. [2022-07-12 14:38:23,334 INFO L78 Accepts]: Start accepts. Automaton has 11778 states and 16350 transitions. Word has length 542 [2022-07-12 14:38:23,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:23,335 INFO L495 AbstractCegarLoop]: Abstraction has 11778 states and 16350 transitions. [2022-07-12 14:38:23,335 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) [2022-07-12 14:38:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 11778 states and 16350 transitions. [2022-07-12 14:38:23,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-07-12 14:38:23,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:23,358 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] [2022-07-12 14:38:23,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-07-12 14:38:23,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:23,558 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:23,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:23,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2039518039, now seen corresponding path program 1 times [2022-07-12 14:38:23,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:23,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064707485] [2022-07-12 14:38:23,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:23,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:23,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:23,564 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) [2022-07-12 14:38:23,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-07-12 14:38:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:27,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 5847 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 14:38:27,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2022-07-12 14:38:28,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:28,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:28,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064707485] [2022-07-12 14:38:28,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064707485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:28,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:28,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 14:38:28,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986525516] [2022-07-12 14:38:28,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:28,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 14:38:28,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:28,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 14:38:28,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:38:28,015 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) [2022-07-12 14:38:33,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:33,018 INFO L93 Difference]: Finished difference Result 23734 states and 33013 transitions. [2022-07-12 14:38:33,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 14:38:33,019 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 [2022-07-12 14:38:33,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:33,059 INFO L225 Difference]: With dead ends: 23734 [2022-07-12 14:38:33,059 INFO L226 Difference]: Without dead ends: 12232 [2022-07-12 14:38:33,087 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 [2022-07-12 14:38:33,088 INFO L413 NwaCegarLoop]: 2113 mSDtfsCounter, 128 mSDsluCounter, 12482 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s 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, 4.6s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:33,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 14595 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-12 14:38:33,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12232 states. [2022-07-12 14:38:33,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12232 to 11818. [2022-07-12 14:38:33,557 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) [2022-07-12 14:38:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11818 states to 11818 states and 16390 transitions. [2022-07-12 14:38:33,598 INFO L78 Accepts]: Start accepts. Automaton has 11818 states and 16390 transitions. Word has length 542 [2022-07-12 14:38:33,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:33,598 INFO L495 AbstractCegarLoop]: Abstraction has 11818 states and 16390 transitions. [2022-07-12 14:38:33,598 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) [2022-07-12 14:38:33,599 INFO L276 IsEmpty]: Start isEmpty. Operand 11818 states and 16390 transitions. [2022-07-12 14:38:33,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-07-12 14:38:33,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:33,623 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] [2022-07-12 14:38:33,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-07-12 14:38:33,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:33,827 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:33,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:33,828 INFO L85 PathProgramCache]: Analyzing trace with hash -618101590, now seen corresponding path program 1 times [2022-07-12 14:38:33,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:33,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373200364] [2022-07-12 14:38:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:33,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:33,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:33,833 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) [2022-07-12 14:38:33,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process