./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.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 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 01:04:02,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 01:04:02,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 01:04:02,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 01:04:02,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 01:04:02,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 01:04:02,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 01:04:02,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 01:04:02,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 01:04:02,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 01:04:02,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 01:04:02,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 01:04:02,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 01:04:02,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 01:04:02,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 01:04:02,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 01:04:02,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 01:04:02,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 01:04:02,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 01:04:02,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 01:04:02,888 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 01:04:02,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 01:04:02,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 01:04:02,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 01:04:02,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 01:04:02,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 01:04:02,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 01:04:02,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 01:04:02,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 01:04:02,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 01:04:02,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 01:04:02,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 01:04:02,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 01:04:02,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 01:04:02,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 01:04:02,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 01:04:02,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 01:04:02,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 01:04:02,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 01:04:02,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 01:04:02,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 01:04:02,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 01:04:02,910 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 01:04:02,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 01:04:02,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 01:04:02,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 01:04:02,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 01:04:02,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 01:04:02,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 01:04:02,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 01:04:02,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 01:04:02,940 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 01:04:02,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 01:04:02,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 01:04:02,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 01:04:02,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 01:04:02,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 01:04:02,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 01:04:02,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 01:04:02,942 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 01:04:02,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 01:04:02,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 01:04:02,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 01:04:02,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 01:04:02,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:04:02,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 01:04:02,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 01:04:02,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 01:04:02,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 01:04:02,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 01:04:02,944 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 01:04:02,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 01:04:02,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 01:04:02,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 [2022-07-20 01:04:03,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 01:04:03,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 01:04:03,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 01:04:03,206 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 01:04:03,207 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 01:04:03,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-20 01:04:03,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7601cb8ae/838fba59b7b84bcf944185ad0110081d/FLAG800da65a5 [2022-07-20 01:04:03,977 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 01:04:03,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-20 01:04:04,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7601cb8ae/838fba59b7b84bcf944185ad0110081d/FLAG800da65a5 [2022-07-20 01:04:04,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7601cb8ae/838fba59b7b84bcf944185ad0110081d [2022-07-20 01:04:04,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 01:04:04,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 01:04:04,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 01:04:04,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 01:04:04,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 01:04:04,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:04:04" (1/1) ... [2022-07-20 01:04:04,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4dd924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:04, skipping insertion in model container [2022-07-20 01:04:04,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:04:04" (1/1) ... [2022-07-20 01:04:04,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 01:04:04,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:04:05,228 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-20 01:04:05,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:04:05,364 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 01:04:05,498 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:1650) 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:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-20 01:04:05,507 INFO L158 Benchmark]: Toolchain (without parser) took 1426.58ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 48.3MB in the beginning and 53.0MB in the end (delta: -4.7MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2022-07-20 01:04:05,508 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 45.1MB in the beginning and 45.1MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 01:04:05,510 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1422.10ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 48.1MB in the beginning and 53.0MB in the end (delta: -4.9MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2022-07-20 01:04:05,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 45.1MB in the beginning and 45.1MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1422.10ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 48.1MB in the beginning and 53.0MB in the end (delta: -4.9MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.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 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 01:04:07,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 01:04:07,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 01:04:07,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 01:04:07,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 01:04:07,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 01:04:07,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 01:04:07,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 01:04:07,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 01:04:07,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 01:04:07,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 01:04:07,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 01:04:07,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 01:04:07,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 01:04:07,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 01:04:07,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 01:04:07,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 01:04:07,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 01:04:07,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 01:04:07,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 01:04:07,294 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 01:04:07,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 01:04:07,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 01:04:07,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 01:04:07,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 01:04:07,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 01:04:07,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 01:04:07,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 01:04:07,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 01:04:07,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 01:04:07,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 01:04:07,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 01:04:07,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 01:04:07,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 01:04:07,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 01:04:07,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 01:04:07,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 01:04:07,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 01:04:07,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 01:04:07,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 01:04:07,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 01:04:07,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 01:04:07,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-20 01:04:07,343 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 01:04:07,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 01:04:07,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 01:04:07,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 01:04:07,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 01:04:07,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 01:04:07,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 01:04:07,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 01:04:07,346 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 01:04:07,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 01:04:07,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 01:04:07,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 01:04:07,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 01:04:07,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 01:04:07,348 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 01:04:07,348 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 01:04:07,348 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 01:04:07,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 01:04:07,348 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 01:04:07,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 01:04:07,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 01:04:07,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 01:04:07,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 01:04:07,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:04:07,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 01:04:07,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 01:04:07,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 01:04:07,350 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 01:04:07,350 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 01:04:07,351 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 01:04:07,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 01:04:07,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 01:04:07,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 01:04:07,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 [2022-07-20 01:04:07,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 01:04:07,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 01:04:07,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 01:04:07,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 01:04:07,717 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 01:04:07,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-20 01:04:07,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52802adb0/2dc0e69737664f5e9fc134e5b93b445f/FLAGddc96ea45 [2022-07-20 01:04:08,415 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 01:04:08,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-20 01:04:08,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52802adb0/2dc0e69737664f5e9fc134e5b93b445f/FLAGddc96ea45 [2022-07-20 01:04:08,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52802adb0/2dc0e69737664f5e9fc134e5b93b445f [2022-07-20 01:04:08,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 01:04:08,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 01:04:08,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 01:04:08,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 01:04:08,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 01:04:08,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:04:08" (1/1) ... [2022-07-20 01:04:08,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d27499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:08, skipping insertion in model container [2022-07-20 01:04:08,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:04:08" (1/1) ... [2022-07-20 01:04:08,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 01:04:08,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:04:10,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-20 01:04:10,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:04:10,244 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 01:04:10,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:04:10,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-20 01:04:10,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:04:10,602 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 01:04:10,821 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-20 01:04:10,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:04:10,952 INFO L208 MainTranslator]: Completed translation [2022-07-20 01:04:10,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:10 WrapperNode [2022-07-20 01:04:10,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 01:04:10,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 01:04:10,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 01:04:10,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 01:04:10,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:10" (1/1) ... [2022-07-20 01:04:11,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:10" (1/1) ... [2022-07-20 01:04:11,124 INFO L137 Inliner]: procedures = 265, calls = 1509, calls flagged for inlining = 86, calls inlined = 78, statements flattened = 3180 [2022-07-20 01:04:11,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 01:04:11,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 01:04:11,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 01:04:11,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 01:04:11,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:10" (1/1) ... [2022-07-20 01:04:11,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:10" (1/1) ... [2022-07-20 01:04:11,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:10" (1/1) ... [2022-07-20 01:04:11,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:10" (1/1) ... [2022-07-20 01:04:11,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:10" (1/1) ... [2022-07-20 01:04:11,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:10" (1/1) ... [2022-07-20 01:04:11,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:10" (1/1) ... [2022-07-20 01:04:11,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 01:04:11,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 01:04:11,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 01:04:11,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 01:04:11,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:10" (1/1) ... [2022-07-20 01:04:11,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:04:11,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 01:04:11,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 01:04:11,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 01:04:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-20 01:04:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-20 01:04:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-20 01:04:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-20 01:04:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-20 01:04:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-20 01:04:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2022-07-20 01:04:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2022-07-20 01:04:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 01:04:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-20 01:04:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-20 01:04:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-20 01:04:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 01:04:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 01:04:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 01:04:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 01:04:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-07-20 01:04:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-07-20 01:04:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2022-07-20 01:04:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2022-07-20 01:04:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 01:04:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 01:04:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-07-20 01:04:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-07-20 01:04:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-20 01:04:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-20 01:04:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-20 01:04:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-20 01:04:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2022-07-20 01:04:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2022-07-20 01:04:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-07-20 01:04:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-07-20 01:04:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 01:04:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 01:04:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 01:04:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 01:04:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2022-07-20 01:04:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2022-07-20 01:04:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-20 01:04:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-20 01:04:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2022-07-20 01:04:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2022-07-20 01:04:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 01:04:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-20 01:04:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-20 01:04:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-07-20 01:04:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-07-20 01:04:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2022-07-20 01:04:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2022-07-20 01:04:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 01:04:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-07-20 01:04:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-07-20 01:04:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-07-20 01:04:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-07-20 01:04:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-20 01:04:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-20 01:04:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2022-07-20 01:04:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2022-07-20 01:04:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-20 01:04:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-20 01:04:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2022-07-20 01:04:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2022-07-20 01:04:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-20 01:04:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-20 01:04:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-20 01:04:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 01:04:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 01:04:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 01:04:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-20 01:04:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 01:04:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-20 01:04:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-20 01:04:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2022-07-20 01:04:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2022-07-20 01:04:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2022-07-20 01:04:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2022-07-20 01:04:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-20 01:04:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-20 01:04:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-07-20 01:04:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-07-20 01:04:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-20 01:04:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-20 01:04:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-20 01:04:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-20 01:04:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2022-07-20 01:04:11,463 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2022-07-20 01:04:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-20 01:04:11,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-20 01:04:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-20 01:04:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-20 01:04:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-20 01:04:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-20 01:04:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2022-07-20 01:04:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2022-07-20 01:04:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-20 01:04:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-20 01:04:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2022-07-20 01:04:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2022-07-20 01:04:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2022-07-20 01:04:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2022-07-20 01:04:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2022-07-20 01:04:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2022-07-20 01:04:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2022-07-20 01:04:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2022-07-20 01:04:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-20 01:04:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-20 01:04:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-20 01:04:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-20 01:04:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-20 01:04:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-20 01:04:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2022-07-20 01:04:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2022-07-20 01:04:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-07-20 01:04:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-07-20 01:04:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-07-20 01:04:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-07-20 01:04:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2022-07-20 01:04:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2022-07-20 01:04:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2022-07-20 01:04:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2022-07-20 01:04:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-20 01:04:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-20 01:04:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-20 01:04:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-20 01:04:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 01:04:11,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 01:04:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-20 01:04:11,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-20 01:04:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2022-07-20 01:04:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2022-07-20 01:04:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 01:04:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 01:04:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2022-07-20 01:04:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2022-07-20 01:04:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-20 01:04:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-20 01:04:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 01:04:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-20 01:04:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-20 01:04:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-20 01:04:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-20 01:04:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-20 01:04:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-07-20 01:04:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-07-20 01:04:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2022-07-20 01:04:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2022-07-20 01:04:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-20 01:04:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-20 01:04:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2022-07-20 01:04:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2022-07-20 01:04:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2022-07-20 01:04:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2022-07-20 01:04:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-07-20 01:04:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-07-20 01:04:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2022-07-20 01:04:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2022-07-20 01:04:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-20 01:04:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-20 01:04:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-07-20 01:04:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-07-20 01:04:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2022-07-20 01:04:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2022-07-20 01:04:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2022-07-20 01:04:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2022-07-20 01:04:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2022-07-20 01:04:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2022-07-20 01:04:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-20 01:04:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2022-07-20 01:04:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2022-07-20 01:04:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-20 01:04:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-20 01:04:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 01:04:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 01:04:12,051 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 01:04:12,053 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 01:04:12,633 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 01:04:23,103 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 01:04:23,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 01:04:23,126 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 01:04:23,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:04:23 BoogieIcfgContainer [2022-07-20 01:04:23,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 01:04:23,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 01:04:23,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 01:04:23,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 01:04:23,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:04:08" (1/3) ... [2022-07-20 01:04:23,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a8cb4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:04:23, skipping insertion in model container [2022-07-20 01:04:23,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:04:10" (2/3) ... [2022-07-20 01:04:23,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a8cb4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:04:23, skipping insertion in model container [2022-07-20 01:04:23,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:04:23" (3/3) ... [2022-07-20 01:04:23,138 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-20 01:04:23,150 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 01:04:23,150 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 01:04:23,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 01:04:23,233 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@455194bf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@40ccf797 [2022-07-20 01:04:23,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 01:04:23,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 769 states have (on average 1.340702210663199) internal successors, (1031), 808 states have internal predecessors, (1031), 261 states have call successors, (261), 71 states have call predecessors, (261), 70 states have return successors, (255), 247 states have call predecessors, (255), 255 states have call successors, (255) [2022-07-20 01:04:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-20 01:04:23,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:23,254 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-07-20 01:04:23,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:23,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:23,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1615853478, now seen corresponding path program 1 times [2022-07-20 01:04:23,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:23,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678493640] [2022-07-20 01:04:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:23,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:23,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:23,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:23,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 01:04:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:24,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-20 01:04:24,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-20 01:04:24,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:24,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:24,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678493640] [2022-07-20 01:04:24,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678493640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:24,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:24,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:04:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015498482] [2022-07-20 01:04:24,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:24,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-20 01:04:24,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:24,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-20 01:04:24,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 01:04:24,512 INFO L87 Difference]: Start difference. First operand has 1102 states, 769 states have (on average 1.340702210663199) internal successors, (1031), 808 states have internal predecessors, (1031), 261 states have call successors, (261), 71 states have call predecessors, (261), 70 states have return successors, (255), 247 states have call predecessors, (255), 255 states have call successors, (255) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-20 01:04:24,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:24,624 INFO L93 Difference]: Finished difference Result 2199 states and 3148 transitions. [2022-07-20 01:04:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-20 01:04:24,629 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-20 01:04:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:24,654 INFO L225 Difference]: With dead ends: 2199 [2022-07-20 01:04:24,655 INFO L226 Difference]: Without dead ends: 1089 [2022-07-20 01:04:24,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 01:04:24,672 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:24,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 01:04:24,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-07-20 01:04:24,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1089. [2022-07-20 01:04:24,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 764 states have (on average 1.331151832460733) internal successors, (1017), 795 states have internal predecessors, (1017), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-20 01:04:24,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1521 transitions. [2022-07-20 01:04:24,791 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1521 transitions. Word has length 72 [2022-07-20 01:04:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:24,792 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1521 transitions. [2022-07-20 01:04:24,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-20 01:04:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1521 transitions. [2022-07-20 01:04:24,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-20 01:04:24,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:24,796 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-07-20 01:04:24,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:25,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:25,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:25,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:25,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1669556384, now seen corresponding path program 1 times [2022-07-20 01:04:25,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:25,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226888872] [2022-07-20 01:04:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:25,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:25,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:25,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:25,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 01:04:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:26,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 01:04:26,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-20 01:04:26,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:26,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:26,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226888872] [2022-07-20 01:04:26,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226888872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:26,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:26,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 01:04:26,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663522391] [2022-07-20 01:04:26,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:26,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:04:26,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:26,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:04:26,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:04:26,180 INFO L87 Difference]: Start difference. First operand 1089 states and 1521 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-20 01:04:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:26,349 INFO L93 Difference]: Finished difference Result 2171 states and 3037 transitions. [2022-07-20 01:04:26,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 01:04:26,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2022-07-20 01:04:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:26,357 INFO L225 Difference]: With dead ends: 2171 [2022-07-20 01:04:26,357 INFO L226 Difference]: Without dead ends: 1090 [2022-07-20 01:04:26,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:04:26,362 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 364 mSDsluCounter, 4105 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:26,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 5624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 01:04:26,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-20 01:04:26,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-20 01:04:26,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 765 states have (on average 1.330718954248366) internal successors, (1018), 796 states have internal predecessors, (1018), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-20 01:04:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1522 transitions. [2022-07-20 01:04:26,401 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1522 transitions. Word has length 72 [2022-07-20 01:04:26,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:26,402 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1522 transitions. [2022-07-20 01:04:26,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-20 01:04:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1522 transitions. [2022-07-20 01:04:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-20 01:04:26,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:26,404 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-07-20 01:04:26,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:26,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:26,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:26,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2122471599, now seen corresponding path program 1 times [2022-07-20 01:04:26,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:26,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396008805] [2022-07-20 01:04:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:26,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:26,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:26,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:26,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 01:04:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:27,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 01:04:27,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-20 01:04:27,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:04:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-20 01:04:28,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:28,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396008805] [2022-07-20 01:04:28,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396008805] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:04:28,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:04:28,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-07-20 01:04:28,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761117514] [2022-07-20 01:04:28,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:04:28,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 01:04:28,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:28,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 01:04:28,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-20 01:04:28,193 INFO L87 Difference]: Start difference. First operand 1090 states and 1522 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-20 01:04:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:28,681 INFO L93 Difference]: Finished difference Result 2173 states and 3039 transitions. [2022-07-20 01:04:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:04:28,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-07-20 01:04:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:28,691 INFO L225 Difference]: With dead ends: 2173 [2022-07-20 01:04:28,691 INFO L226 Difference]: Without dead ends: 1091 [2022-07-20 01:04:28,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-20 01:04:28,702 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 729 mSDsluCounter, 7135 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 8654 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:28,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 8654 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 01:04:28,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-20 01:04:28,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-07-20 01:04:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 766 states have (on average 1.3302872062663185) internal successors, (1019), 797 states have internal predecessors, (1019), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-20 01:04:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1523 transitions. [2022-07-20 01:04:28,745 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1523 transitions. Word has length 73 [2022-07-20 01:04:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:28,746 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1523 transitions. [2022-07-20 01:04:28,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-20 01:04:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1523 transitions. [2022-07-20 01:04:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-20 01:04:28,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:28,750 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:04:28,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-20 01:04:28,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:28,972 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:28,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:28,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1017025920, now seen corresponding path program 2 times [2022-07-20 01:04:28,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:28,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377328858] [2022-07-20 01:04:28,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:04:28,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:28,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:28,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:29,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 01:04:29,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:04:29,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:04:29,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:04:29,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-20 01:04:30,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:30,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:30,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377328858] [2022-07-20 01:04:30,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377328858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:30,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:30,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:04:30,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525632686] [2022-07-20 01:04:30,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:30,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:04:30,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:30,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:04:30,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:30,223 INFO L87 Difference]: Start difference. First operand 1091 states and 1523 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 01:04:30,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:30,273 INFO L93 Difference]: Finished difference Result 1093 states and 1524 transitions. [2022-07-20 01:04:30,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:04:30,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2022-07-20 01:04:30,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:30,280 INFO L225 Difference]: With dead ends: 1093 [2022-07-20 01:04:30,280 INFO L226 Difference]: Without dead ends: 1090 [2022-07-20 01:04:30,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:30,281 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1475 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:30,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1518 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 01:04:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-20 01:04:30,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-20 01:04:30,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 766 states have (on average 1.328981723237598) internal successors, (1018), 796 states have internal predecessors, (1018), 254 states have call successors, (254), 70 states have call predecessors, (254), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-20 01:04:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1521 transitions. [2022-07-20 01:04:30,318 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1521 transitions. Word has length 74 [2022-07-20 01:04:30,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:30,320 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1521 transitions. [2022-07-20 01:04:30,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 01:04:30,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1521 transitions. [2022-07-20 01:04:30,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-20 01:04:30,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:30,322 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:04:30,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-20 01:04:30,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:30,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:30,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1462680797, now seen corresponding path program 1 times [2022-07-20 01:04:30,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:30,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889891481] [2022-07-20 01:04:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:30,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:30,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:30,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:30,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 01:04:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:31,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 01:04:31,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-20 01:04:31,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:04:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-20 01:04:32,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:32,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889891481] [2022-07-20 01:04:32,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889891481] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:04:32,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:04:32,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-20 01:04:32,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074669534] [2022-07-20 01:04:32,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:04:32,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 01:04:32,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:32,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 01:04:32,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-20 01:04:32,033 INFO L87 Difference]: Start difference. First operand 1090 states and 1521 transitions. Second operand has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-20 01:04:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:32,341 INFO L93 Difference]: Finished difference Result 2173 states and 3037 transitions. [2022-07-20 01:04:32,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 01:04:32,342 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 75 [2022-07-20 01:04:32,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:32,349 INFO L225 Difference]: With dead ends: 2173 [2022-07-20 01:04:32,349 INFO L226 Difference]: Without dead ends: 1091 [2022-07-20 01:04:32,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-20 01:04:32,354 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 365 mSDsluCounter, 9713 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 11230 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:32,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 11230 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 01:04:32,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-20 01:04:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-07-20 01:04:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 767 states have (on average 1.3285528031290743) internal successors, (1019), 797 states have internal predecessors, (1019), 254 states have call successors, (254), 70 states have call predecessors, (254), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-20 01:04:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1522 transitions. [2022-07-20 01:04:32,392 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1522 transitions. Word has length 75 [2022-07-20 01:04:32,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:32,393 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1522 transitions. [2022-07-20 01:04:32,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-20 01:04:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1522 transitions. [2022-07-20 01:04:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-20 01:04:32,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:32,395 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-07-20 01:04:32,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:32,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:32,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:32,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash -842212532, now seen corresponding path program 2 times [2022-07-20 01:04:32,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:32,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185804642] [2022-07-20 01:04:32,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:04:32,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:32,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:32,616 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:32,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 01:04:33,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:04:33,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:04:33,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:04:33,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-20 01:04:33,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:33,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:33,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185804642] [2022-07-20 01:04:33,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185804642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:33,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:33,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:04:33,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702489398] [2022-07-20 01:04:33,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:33,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:04:33,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:33,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:04:33,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:33,808 INFO L87 Difference]: Start difference. First operand 1091 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 01:04:33,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:33,842 INFO L93 Difference]: Finished difference Result 1093 states and 1523 transitions. [2022-07-20 01:04:33,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:04:33,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 76 [2022-07-20 01:04:33,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:33,849 INFO L225 Difference]: With dead ends: 1093 [2022-07-20 01:04:33,849 INFO L226 Difference]: Without dead ends: 1090 [2022-07-20 01:04:33,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:33,850 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 1472 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:33,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1516 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 01:04:33,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-20 01:04:33,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-20 01:04:33,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 767 states have (on average 1.3272490221642763) internal successors, (1018), 796 states have internal predecessors, (1018), 253 states have call successors, (253), 70 states have call predecessors, (253), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-20 01:04:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1520 transitions. [2022-07-20 01:04:33,884 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1520 transitions. Word has length 76 [2022-07-20 01:04:33,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:33,885 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1520 transitions. [2022-07-20 01:04:33,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 01:04:33,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1520 transitions. [2022-07-20 01:04:33,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-20 01:04:33,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:33,887 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-07-20 01:04:33,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:34,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:34,103 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:34,104 INFO L85 PathProgramCache]: Analyzing trace with hash -339131500, now seen corresponding path program 1 times [2022-07-20 01:04:34,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:34,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764179075] [2022-07-20 01:04:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:34,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:34,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:34,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:34,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 01:04:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:35,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 01:04:35,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:35,240 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-20 01:04:35,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:04:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-20 01:04:35,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:35,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764179075] [2022-07-20 01:04:35,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764179075] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:04:35,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:04:35,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-20 01:04:35,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907447827] [2022-07-20 01:04:35,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:04:35,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 01:04:35,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:35,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 01:04:35,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-20 01:04:35,905 INFO L87 Difference]: Start difference. First operand 1090 states and 1520 transitions. Second operand has 13 states, 11 states have (on average 4.0) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-20 01:04:36,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:36,292 INFO L93 Difference]: Finished difference Result 2173 states and 3035 transitions. [2022-07-20 01:04:36,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 01:04:36,293 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.0) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 77 [2022-07-20 01:04:36,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:36,304 INFO L225 Difference]: With dead ends: 2173 [2022-07-20 01:04:36,304 INFO L226 Difference]: Without dead ends: 1091 [2022-07-20 01:04:36,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-20 01:04:36,310 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 365 mSDsluCounter, 9701 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 11216 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:36,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 11216 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 01:04:36,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-20 01:04:36,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-07-20 01:04:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 768 states have (on average 1.3268229166666667) internal successors, (1019), 797 states have internal predecessors, (1019), 253 states have call successors, (253), 70 states have call predecessors, (253), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-20 01:04:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1521 transitions. [2022-07-20 01:04:36,349 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1521 transitions. Word has length 77 [2022-07-20 01:04:36,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:36,350 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1521 transitions. [2022-07-20 01:04:36,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.0) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-20 01:04:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1521 transitions. [2022-07-20 01:04:36,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-20 01:04:36,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:36,351 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2022-07-20 01:04:36,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:36,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:36,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:36,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:36,576 INFO L85 PathProgramCache]: Analyzing trace with hash 861504067, now seen corresponding path program 2 times [2022-07-20 01:04:36,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:36,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951844930] [2022-07-20 01:04:36,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:04:36,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:36,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:36,579 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:36,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 01:04:37,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:04:37,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:04:37,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:04:37,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-20 01:04:37,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:37,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:37,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951844930] [2022-07-20 01:04:37,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951844930] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:37,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:37,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:04:37,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227865757] [2022-07-20 01:04:37,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:37,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:04:37,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:37,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:04:37,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:37,716 INFO L87 Difference]: Start difference. First operand 1091 states and 1521 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 01:04:37,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:37,754 INFO L93 Difference]: Finished difference Result 1093 states and 1522 transitions. [2022-07-20 01:04:37,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:04:37,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 78 [2022-07-20 01:04:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:37,760 INFO L225 Difference]: With dead ends: 1093 [2022-07-20 01:04:37,760 INFO L226 Difference]: Without dead ends: 1090 [2022-07-20 01:04:37,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:37,761 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:37,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1514 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 01:04:37,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-20 01:04:37,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-20 01:04:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 768 states have (on average 1.3255208333333333) internal successors, (1018), 796 states have internal predecessors, (1018), 252 states have call successors, (252), 70 states have call predecessors, (252), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-20 01:04:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1519 transitions. [2022-07-20 01:04:37,795 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1519 transitions. Word has length 78 [2022-07-20 01:04:37,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:37,795 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1519 transitions. [2022-07-20 01:04:37,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 01:04:37,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1519 transitions. [2022-07-20 01:04:37,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-20 01:04:37,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:37,797 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2022-07-20 01:04:37,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:38,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:38,024 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:38,024 INFO L85 PathProgramCache]: Analyzing trace with hash 936480384, now seen corresponding path program 1 times [2022-07-20 01:04:38,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:38,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424517081] [2022-07-20 01:04:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:38,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:38,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:38,027 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:38,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 01:04:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:38,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:04:39,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-20 01:04:39,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:39,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:39,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424517081] [2022-07-20 01:04:39,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424517081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:39,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:39,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:04:39,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000782986] [2022-07-20 01:04:39,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:39,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:04:39,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:39,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:04:39,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:39,041 INFO L87 Difference]: Start difference. First operand 1090 states and 1519 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 01:04:39,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:39,300 INFO L93 Difference]: Finished difference Result 3228 states and 4505 transitions. [2022-07-20 01:04:39,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:04:39,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 79 [2022-07-20 01:04:39,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:39,314 INFO L225 Difference]: With dead ends: 3228 [2022-07-20 01:04:39,314 INFO L226 Difference]: Without dead ends: 2151 [2022-07-20 01:04:39,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:39,322 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 1479 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:39,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 3296 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 01:04:39,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2022-07-20 01:04:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2147. [2022-07-20 01:04:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 1512 states have (on average 1.3280423280423281) internal successors, (2008), 1566 states have internal predecessors, (2008), 496 states have call successors, (496), 139 states have call predecessors, (496), 138 states have return successors, (493), 477 states have call predecessors, (493), 493 states have call successors, (493) [2022-07-20 01:04:39,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 2997 transitions. [2022-07-20 01:04:39,407 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 2997 transitions. Word has length 79 [2022-07-20 01:04:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:39,408 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 2997 transitions. [2022-07-20 01:04:39,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 01:04:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 2997 transitions. [2022-07-20 01:04:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-20 01:04:39,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:39,413 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2022-07-20 01:04:39,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:39,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:39,627 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:39,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:39,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1356184505, now seen corresponding path program 1 times [2022-07-20 01:04:39,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:39,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54615361] [2022-07-20 01:04:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:39,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:39,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:39,631 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:39,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 01:04:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:40,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:04:40,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-20 01:04:40,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:40,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:40,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54615361] [2022-07-20 01:04:40,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54615361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:40,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:40,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:04:40,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916039386] [2022-07-20 01:04:40,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:40,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:04:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:40,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:04:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:40,700 INFO L87 Difference]: Start difference. First operand 2147 states and 2997 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-20 01:04:41,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:41,033 INFO L93 Difference]: Finished difference Result 6092 states and 8514 transitions. [2022-07-20 01:04:41,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:04:41,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2022-07-20 01:04:41,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:41,061 INFO L225 Difference]: With dead ends: 6092 [2022-07-20 01:04:41,062 INFO L226 Difference]: Without dead ends: 3968 [2022-07-20 01:04:41,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:41,076 INFO L413 NwaCegarLoop]: 1994 mSDtfsCounter, 1302 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 3461 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:41,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 3461 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 01:04:41,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-07-20 01:04:41,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3930. [2022-07-20 01:04:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 2772 states have (on average 1.3304473304473305) internal successors, (3688), 2870 states have internal predecessors, (3688), 897 states have call successors, (897), 263 states have call predecessors, (897), 260 states have return successors, (916), 858 states have call predecessors, (916), 894 states have call successors, (916) [2022-07-20 01:04:41,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 5501 transitions. [2022-07-20 01:04:41,251 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 5501 transitions. Word has length 85 [2022-07-20 01:04:41,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:41,252 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 5501 transitions. [2022-07-20 01:04:41,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-20 01:04:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 5501 transitions. [2022-07-20 01:04:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-20 01:04:41,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:41,255 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:04:41,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:41,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:41,469 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:41,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1100131717, now seen corresponding path program 1 times [2022-07-20 01:04:41,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:41,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458279153] [2022-07-20 01:04:41,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:41,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:41,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:41,474 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:41,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-20 01:04:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:42,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1685 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:04:42,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-20 01:04:42,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:42,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:42,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458279153] [2022-07-20 01:04:42,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458279153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:42,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:42,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:04:42,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504449413] [2022-07-20 01:04:42,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:42,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:04:42,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:42,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:04:42,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:42,580 INFO L87 Difference]: Start difference. First operand 3930 states and 5501 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-20 01:04:42,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:42,804 INFO L93 Difference]: Finished difference Result 3946 states and 5515 transitions. [2022-07-20 01:04:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:04:42,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 99 [2022-07-20 01:04:42,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:42,890 INFO L225 Difference]: With dead ends: 3946 [2022-07-20 01:04:42,890 INFO L226 Difference]: Without dead ends: 3938 [2022-07-20 01:04:42,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:42,892 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1510 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:42,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1528 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 01:04:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2022-07-20 01:04:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3930. [2022-07-20 01:04:43,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 2772 states have (on average 1.3297258297258296) internal successors, (3686), 2870 states have internal predecessors, (3686), 897 states have call successors, (897), 263 states have call predecessors, (897), 260 states have return successors, (916), 858 states have call predecessors, (916), 894 states have call successors, (916) [2022-07-20 01:04:43,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 5499 transitions. [2022-07-20 01:04:43,062 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 5499 transitions. Word has length 99 [2022-07-20 01:04:43,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:43,063 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 5499 transitions. [2022-07-20 01:04:43,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-20 01:04:43,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 5499 transitions. [2022-07-20 01:04:43,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-20 01:04:43,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:43,067 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:04:43,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:43,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:43,285 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:43,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:43,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1780190087, now seen corresponding path program 1 times [2022-07-20 01:04:43,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:43,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543492442] [2022-07-20 01:04:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:43,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:43,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:43,288 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:43,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-20 01:04:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:44,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:04:44,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-20 01:04:44,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:44,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:44,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543492442] [2022-07-20 01:04:44,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543492442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:44,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:44,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:04:44,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832371677] [2022-07-20 01:04:44,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:44,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:04:44,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:44,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:04:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:44,676 INFO L87 Difference]: Start difference. First operand 3930 states and 5499 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-20 01:04:44,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:44,910 INFO L93 Difference]: Finished difference Result 11724 states and 16423 transitions. [2022-07-20 01:04:44,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:04:44,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 99 [2022-07-20 01:04:44,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:45,017 INFO L225 Difference]: With dead ends: 11724 [2022-07-20 01:04:45,018 INFO L226 Difference]: Without dead ends: 7809 [2022-07-20 01:04:45,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:45,033 INFO L413 NwaCegarLoop]: 1914 mSDtfsCounter, 1451 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:45,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 3401 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 01:04:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7809 states. [2022-07-20 01:04:45,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7809 to 7803. [2022-07-20 01:04:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7803 states, 5501 states have (on average 1.3304853662970368) internal successors, (7319), 5696 states have internal predecessors, (7319), 1785 states have call successors, (1785), 523 states have call predecessors, (1785), 516 states have return successors, (1826), 1707 states have call predecessors, (1826), 1782 states have call successors, (1826) [2022-07-20 01:04:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7803 states to 7803 states and 10930 transitions. [2022-07-20 01:04:45,359 INFO L78 Accepts]: Start accepts. Automaton has 7803 states and 10930 transitions. Word has length 99 [2022-07-20 01:04:45,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:45,359 INFO L495 AbstractCegarLoop]: Abstraction has 7803 states and 10930 transitions. [2022-07-20 01:04:45,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-20 01:04:45,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7803 states and 10930 transitions. [2022-07-20 01:04:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-20 01:04:45,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:45,371 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-20 01:04:45,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:45,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:45,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:45,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1638859229, now seen corresponding path program 1 times [2022-07-20 01:04:45,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:45,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733320291] [2022-07-20 01:04:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:45,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:45,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:45,592 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:45,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-20 01:04:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:46,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:04:46,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-20 01:04:46,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:46,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:46,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733320291] [2022-07-20 01:04:46,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733320291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:46,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:46,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:04:46,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613170769] [2022-07-20 01:04:46,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:46,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:04:46,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:46,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:04:46,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:46,958 INFO L87 Difference]: Start difference. First operand 7803 states and 10930 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-20 01:04:47,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:47,567 INFO L93 Difference]: Finished difference Result 21077 states and 29504 transitions. [2022-07-20 01:04:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:04:47,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 188 [2022-07-20 01:04:47,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:47,640 INFO L225 Difference]: With dead ends: 21077 [2022-07-20 01:04:47,641 INFO L226 Difference]: Without dead ends: 13297 [2022-07-20 01:04:47,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:04:47,679 INFO L413 NwaCegarLoop]: 2185 mSDtfsCounter, 1099 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:47,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 3650 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 01:04:47,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13297 states. [2022-07-20 01:04:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13297 to 13275. [2022-07-20 01:04:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13275 states, 9282 states have (on average 1.3269769446240034) internal successors, (12317), 9639 states have internal predecessors, (12317), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 907 states have return successors, (3170), 2939 states have call predecessors, (3170), 3082 states have call successors, (3170) [2022-07-20 01:04:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 18572 transitions. [2022-07-20 01:04:48,303 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 18572 transitions. Word has length 188 [2022-07-20 01:04:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:48,304 INFO L495 AbstractCegarLoop]: Abstraction has 13275 states and 18572 transitions. [2022-07-20 01:04:48,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-20 01:04:48,305 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 18572 transitions. [2022-07-20 01:04:48,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-20 01:04:48,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:48,322 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 01:04:48,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:48,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:48,543 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:48,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:48,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1778802056, now seen corresponding path program 1 times [2022-07-20 01:04:48,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:48,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903024343] [2022-07-20 01:04:48,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:48,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:48,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:48,547 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:48,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-20 01:04:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:50,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 01:04:50,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-20 01:04:50,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:50,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:50,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903024343] [2022-07-20 01:04:50,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903024343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:50,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:50,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 01:04:50,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604089518] [2022-07-20 01:04:50,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:50,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 01:04:50,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:50,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 01:04:50,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 01:04:50,127 INFO L87 Difference]: Start difference. First operand 13275 states and 18572 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-20 01:04:50,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:50,864 INFO L93 Difference]: Finished difference Result 30969 states and 44179 transitions. [2022-07-20 01:04:50,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 01:04:50,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 211 [2022-07-20 01:04:50,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:51,045 INFO L225 Difference]: With dead ends: 30969 [2022-07-20 01:04:51,046 INFO L226 Difference]: Without dead ends: 17725 [2022-07-20 01:04:51,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:04:51,086 INFO L413 NwaCegarLoop]: 2030 mSDtfsCounter, 720 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 5520 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:51,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 5520 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 01:04:51,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17725 states. [2022-07-20 01:04:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17725 to 13291. [2022-07-20 01:04:51,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13291 states, 9298 states have (on average 1.3264142826414282) internal successors, (12333), 9655 states have internal predecessors, (12333), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 907 states have return successors, (3170), 2939 states have call predecessors, (3170), 3082 states have call successors, (3170) [2022-07-20 01:04:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13291 states to 13291 states and 18588 transitions. [2022-07-20 01:04:51,738 INFO L78 Accepts]: Start accepts. Automaton has 13291 states and 18588 transitions. Word has length 211 [2022-07-20 01:04:51,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:51,738 INFO L495 AbstractCegarLoop]: Abstraction has 13291 states and 18588 transitions. [2022-07-20 01:04:51,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-20 01:04:51,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13291 states and 18588 transitions. [2022-07-20 01:04:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-20 01:04:51,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:51,756 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 01:04:51,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:51,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:51,972 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:51,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1257617411, now seen corresponding path program 1 times [2022-07-20 01:04:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:51,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126572837] [2022-07-20 01:04:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:51,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:51,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:51,976 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:51,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-20 01:04:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:53,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:04:53,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-20 01:04:53,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:53,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:53,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126572837] [2022-07-20 01:04:53,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126572837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:53,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:53,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 01:04:53,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103795132] [2022-07-20 01:04:53,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:53,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:04:53,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:53,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:04:53,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:04:53,968 INFO L87 Difference]: Start difference. First operand 13291 states and 18588 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-20 01:04:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:54,613 INFO L93 Difference]: Finished difference Result 28824 states and 40740 transitions. [2022-07-20 01:04:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 01:04:54,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 234 [2022-07-20 01:04:54,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:54,696 INFO L225 Difference]: With dead ends: 28824 [2022-07-20 01:04:54,697 INFO L226 Difference]: Without dead ends: 15564 [2022-07-20 01:04:54,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:04:54,745 INFO L413 NwaCegarLoop]: 1892 mSDtfsCounter, 264 mSDsluCounter, 5350 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 7242 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:54,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 7242 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 01:04:54,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15564 states. [2022-07-20 01:04:55,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15564 to 13323. [2022-07-20 01:04:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13323 states, 9322 states have (on average 1.3255739111778588) internal successors, (12357), 9679 states have internal predecessors, (12357), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 915 states have return successors, (3186), 2947 states have call predecessors, (3186), 3082 states have call successors, (3186) [2022-07-20 01:04:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13323 states to 13323 states and 18628 transitions. [2022-07-20 01:04:55,442 INFO L78 Accepts]: Start accepts. Automaton has 13323 states and 18628 transitions. Word has length 234 [2022-07-20 01:04:55,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:55,444 INFO L495 AbstractCegarLoop]: Abstraction has 13323 states and 18628 transitions. [2022-07-20 01:04:55,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-20 01:04:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 13323 states and 18628 transitions. [2022-07-20 01:04:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-20 01:04:55,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:55,463 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-20 01:04:55,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:55,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:55,684 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:55,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:55,684 INFO L85 PathProgramCache]: Analyzing trace with hash -562124410, now seen corresponding path program 1 times [2022-07-20 01:04:55,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:55,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532549988] [2022-07-20 01:04:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:55,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:55,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:55,687 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:55,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-20 01:04:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:04:57,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:04:57,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:04:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-20 01:04:57,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:04:57,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:04:57,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532549988] [2022-07-20 01:04:57,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532549988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:04:57,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:04:57,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 01:04:57,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454266643] [2022-07-20 01:04:57,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:04:57,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:04:57,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:04:57,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:04:57,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:04:57,542 INFO L87 Difference]: Start difference. First operand 13323 states and 18628 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-20 01:04:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:04:58,152 INFO L93 Difference]: Finished difference Result 28888 states and 40820 transitions. [2022-07-20 01:04:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 01:04:58,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 241 [2022-07-20 01:04:58,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:04:58,210 INFO L225 Difference]: With dead ends: 28888 [2022-07-20 01:04:58,210 INFO L226 Difference]: Without dead ends: 15596 [2022-07-20 01:04:58,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:04:58,244 INFO L413 NwaCegarLoop]: 1888 mSDtfsCounter, 264 mSDsluCounter, 5342 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 7230 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:04:58,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 7230 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 01:04:58,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15596 states. [2022-07-20 01:04:58,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15596 to 13355. [2022-07-20 01:04:58,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13355 states, 9346 states have (on average 1.3247378557671732) internal successors, (12381), 9703 states have internal predecessors, (12381), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2955 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-20 01:04:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13355 states to 13355 states and 18668 transitions. [2022-07-20 01:04:58,898 INFO L78 Accepts]: Start accepts. Automaton has 13355 states and 18668 transitions. Word has length 241 [2022-07-20 01:04:58,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:04:58,899 INFO L495 AbstractCegarLoop]: Abstraction has 13355 states and 18668 transitions. [2022-07-20 01:04:58,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-20 01:04:58,899 INFO L276 IsEmpty]: Start isEmpty. Operand 13355 states and 18668 transitions. [2022-07-20 01:04:58,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-20 01:04:58,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:04:58,916 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-20 01:04:58,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-20 01:04:59,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:04:59,133 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:04:59,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:04:59,133 INFO L85 PathProgramCache]: Analyzing trace with hash 514428999, now seen corresponding path program 1 times [2022-07-20 01:04:59,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:04:59,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773073576] [2022-07-20 01:04:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:04:59,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:04:59,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:04:59,137 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:04:59,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-20 01:05:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:05:01,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:05:01,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:05:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-20 01:05:01,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:05:01,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:05:01,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773073576] [2022-07-20 01:05:01,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773073576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:05:01,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:05:01,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 01:05:01,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114182448] [2022-07-20 01:05:01,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:05:01,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:05:01,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:05:01,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:05:01,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:05:01,102 INFO L87 Difference]: Start difference. First operand 13355 states and 18668 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-20 01:05:01,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:05:01,765 INFO L93 Difference]: Finished difference Result 26751 states and 37469 transitions. [2022-07-20 01:05:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 01:05:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 241 [2022-07-20 01:05:01,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:05:01,825 INFO L225 Difference]: With dead ends: 26751 [2022-07-20 01:05:01,826 INFO L226 Difference]: Without dead ends: 13427 [2022-07-20 01:05:01,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-20 01:05:01,866 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 8 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6034 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:05:01,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6034 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 01:05:01,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13427 states. [2022-07-20 01:05:02,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13427 to 13395. [2022-07-20 01:05:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13395 states, 9386 states have (on average 1.3233539313871723) internal successors, (12421), 9743 states have internal predecessors, (12421), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2955 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-20 01:05:02,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 18708 transitions. [2022-07-20 01:05:02,361 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 18708 transitions. Word has length 241 [2022-07-20 01:05:02,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:05:02,361 INFO L495 AbstractCegarLoop]: Abstraction has 13395 states and 18708 transitions. [2022-07-20 01:05:02,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-20 01:05:02,362 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 18708 transitions. [2022-07-20 01:05:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-20 01:05:02,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:05:02,378 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-20 01:05:02,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-20 01:05:02,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:05:02,600 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:05:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:05:02,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1176236545, now seen corresponding path program 1 times [2022-07-20 01:05:02,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:05:02,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92961962] [2022-07-20 01:05:02,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:05:02,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:05:02,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:05:02,605 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:05:02,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-20 01:05:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:05:04,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 2231 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 01:05:04,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:05:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-20 01:05:04,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:05:04,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:05:04,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92961962] [2022-07-20 01:05:04,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92961962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:05:04,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:05:04,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 01:05:04,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878886206] [2022-07-20 01:05:04,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:05:04,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 01:05:04,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:05:04,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 01:05:04,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:05:04,760 INFO L87 Difference]: Start difference. First operand 13395 states and 18708 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-20 01:05:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:05:05,806 INFO L93 Difference]: Finished difference Result 31513 states and 44931 transitions. [2022-07-20 01:05:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 01:05:05,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 241 [2022-07-20 01:05:05,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:05:05,859 INFO L225 Difference]: With dead ends: 31513 [2022-07-20 01:05:05,859 INFO L226 Difference]: Without dead ends: 18149 [2022-07-20 01:05:05,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-20 01:05:05,903 INFO L413 NwaCegarLoop]: 2001 mSDtfsCounter, 1396 mSDsluCounter, 9084 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 11085 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 01:05:05,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 11085 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 01:05:05,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18149 states. [2022-07-20 01:05:06,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18149 to 13427. [2022-07-20 01:05:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 9418 states have (on average 1.322255255892971) internal successors, (12453), 9767 states have internal predecessors, (12453), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2963 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-20 01:05:06,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 18740 transitions. [2022-07-20 01:05:06,690 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 18740 transitions. Word has length 241 [2022-07-20 01:05:06,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:05:06,691 INFO L495 AbstractCegarLoop]: Abstraction has 13427 states and 18740 transitions. [2022-07-20 01:05:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-20 01:05:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 18740 transitions. [2022-07-20 01:05:06,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-20 01:05:06,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:05:06,709 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-20 01:05:06,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-20 01:05:06,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:05:06,932 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:05:06,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:05:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1540803124, now seen corresponding path program 1 times [2022-07-20 01:05:06,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:05:06,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950108355] [2022-07-20 01:05:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:05:06,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:05:06,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:05:06,935 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:05:06,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-20 01:05:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:05:08,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:05:08,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:05:08,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2022-07-20 01:05:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-07-20 01:05:09,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:05:09,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:05:09,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950108355] [2022-07-20 01:05:09,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950108355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:05:09,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:05:09,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 01:05:09,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696488470] [2022-07-20 01:05:09,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:05:09,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:05:09,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:05:09,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:05:09,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:05:09,167 INFO L87 Difference]: Start difference. First operand 13427 states and 18740 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-20 01:05:09,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:05:09,717 INFO L93 Difference]: Finished difference Result 26823 states and 37445 transitions. [2022-07-20 01:05:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 01:05:09,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 248 [2022-07-20 01:05:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:05:09,768 INFO L225 Difference]: With dead ends: 26823 [2022-07-20 01:05:09,768 INFO L226 Difference]: Without dead ends: 13427 [2022-07-20 01:05:09,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:05:09,806 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 0 mSDsluCounter, 4361 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5878 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:05:09,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5878 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 189 Unchecked, 0.0s Time] [2022-07-20 01:05:09,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13427 states. [2022-07-20 01:05:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13427 to 13427. [2022-07-20 01:05:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 9418 states have (on average 1.3214058186451476) internal successors, (12445), 9767 states have internal predecessors, (12445), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2963 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-20 01:05:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 18732 transitions. [2022-07-20 01:05:10,345 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 18732 transitions. Word has length 248 [2022-07-20 01:05:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:05:10,346 INFO L495 AbstractCegarLoop]: Abstraction has 13427 states and 18732 transitions. [2022-07-20 01:05:10,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-20 01:05:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 18732 transitions. [2022-07-20 01:05:10,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-20 01:05:10,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:05:10,376 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:05:10,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-20 01:05:10,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:05:10,596 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:05:10,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:05:10,596 INFO L85 PathProgramCache]: Analyzing trace with hash 937748831, now seen corresponding path program 1 times [2022-07-20 01:05:10,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:05:10,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971832153] [2022-07-20 01:05:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:05:10,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:05:10,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:05:10,599 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:05:10,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-20 01:05:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:05:12,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-20 01:05:12,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:05:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-20 01:05:12,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:05:12,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:05:12,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971832153] [2022-07-20 01:05:12,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971832153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:05:12,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:05:12,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:05:12,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43832849] [2022-07-20 01:05:12,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:05:12,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:05:12,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:05:12,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:05:12,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:05:12,707 INFO L87 Difference]: Start difference. First operand 13427 states and 18732 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-20 01:05:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:05:13,630 INFO L93 Difference]: Finished difference Result 29836 states and 42204 transitions. [2022-07-20 01:05:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:05:13,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 253 [2022-07-20 01:05:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:05:13,699 INFO L225 Difference]: With dead ends: 29836 [2022-07-20 01:05:13,700 INFO L226 Difference]: Without dead ends: 16440 [2022-07-20 01:05:13,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:05:13,738 INFO L413 NwaCegarLoop]: 1971 mSDtfsCounter, 705 mSDsluCounter, 7087 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 9058 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 01:05:13,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 9058 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 01:05:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16440 states. [2022-07-20 01:05:14,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16440 to 13467. [2022-07-20 01:05:14,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13467 states, 9450 states have (on average 1.3203174603174603) internal successors, (12477), 9799 states have internal predecessors, (12477), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 931 states have return successors, (3250), 2971 states have call predecessors, (3250), 3082 states have call successors, (3250) [2022-07-20 01:05:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13467 states to 13467 states and 18812 transitions. [2022-07-20 01:05:14,311 INFO L78 Accepts]: Start accepts. Automaton has 13467 states and 18812 transitions. Word has length 253 [2022-07-20 01:05:14,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:05:14,311 INFO L495 AbstractCegarLoop]: Abstraction has 13467 states and 18812 transitions. [2022-07-20 01:05:14,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-20 01:05:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 13467 states and 18812 transitions. [2022-07-20 01:05:14,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-20 01:05:14,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:05:14,322 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:05:14,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-20 01:05:14,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:05:14,524 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:05:14,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:05:14,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1571433039, now seen corresponding path program 1 times [2022-07-20 01:05:14,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:05:14,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734381957] [2022-07-20 01:05:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:05:14,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:05:14,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:05:14,528 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:05:14,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-20 01:05:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:05:16,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-20 01:05:16,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:05:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-20 01:05:16,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:05:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-20 01:05:17,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:05:17,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734381957] [2022-07-20 01:05:17,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734381957] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:05:17,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:05:17,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2022-07-20 01:05:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350137961] [2022-07-20 01:05:17,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:05:17,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 01:05:17,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:05:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 01:05:17,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-20 01:05:17,874 INFO L87 Difference]: Start difference. First operand 13467 states and 18812 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 10 states have internal predecessors, (161), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-20 01:05:20,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:05:21,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:05:21,709 INFO L93 Difference]: Finished difference Result 29190 states and 41214 transitions. [2022-07-20 01:05:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 01:05:21,711 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 10 states have internal predecessors, (161), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) Word has length 259 [2022-07-20 01:05:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:05:21,760 INFO L225 Difference]: With dead ends: 29190 [2022-07-20 01:05:21,761 INFO L226 Difference]: Without dead ends: 15754 [2022-07-20 01:05:21,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 501 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-07-20 01:05:21,790 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 306 mSDsluCounter, 16855 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 18570 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-20 01:05:21,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 18570 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 195 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-07-20 01:05:21,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15754 states. [2022-07-20 01:05:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15754 to 13499. [2022-07-20 01:05:22,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13499 states, 9474 states have (on average 1.3186616001688833) internal successors, (12493), 9823 states have internal predecessors, (12493), 3093 states have call successors, (3093), 920 states have call predecessors, (3093), 931 states have return successors, (3258), 2975 states have call predecessors, (3258), 3090 states have call successors, (3258) [2022-07-20 01:05:22,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13499 states to 13499 states and 18844 transitions. [2022-07-20 01:05:22,275 INFO L78 Accepts]: Start accepts. Automaton has 13499 states and 18844 transitions. Word has length 259 [2022-07-20 01:05:22,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:05:22,276 INFO L495 AbstractCegarLoop]: Abstraction has 13499 states and 18844 transitions. [2022-07-20 01:05:22,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 10 states have internal predecessors, (161), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-20 01:05:22,276 INFO L276 IsEmpty]: Start isEmpty. Operand 13499 states and 18844 transitions. [2022-07-20 01:05:22,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-07-20 01:05:22,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:05:22,289 INFO L195 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:05:22,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-20 01:05:22,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:05:22,490 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:05:22,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:05:22,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1159378091, now seen corresponding path program 1 times [2022-07-20 01:05:22,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:05:22,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613268448] [2022-07-20 01:05:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:05:22,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:05:22,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:05:22,494 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:05:22,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-20 01:05:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:05:25,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-20 01:05:25,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:05:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-20 01:05:25,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:05:25,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:05:25,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613268448] [2022-07-20 01:05:25,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613268448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:05:25,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:05:25,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 01:05:25,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196856803] [2022-07-20 01:05:25,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:05:25,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 01:05:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:05:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 01:05:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-20 01:05:25,619 INFO L87 Difference]: Start difference. First operand 13499 states and 18844 transitions. Second operand has 8 states, 8 states have (on average 24.5) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-20 01:05:28,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:05:29,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:05:29,294 INFO L93 Difference]: Finished difference Result 31509 states and 44935 transitions. [2022-07-20 01:05:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 01:05:29,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.5) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 388 [2022-07-20 01:05:29,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:05:29,360 INFO L225 Difference]: With dead ends: 31509 [2022-07-20 01:05:29,360 INFO L226 Difference]: Without dead ends: 18041 [2022-07-20 01:05:29,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-20 01:05:29,397 INFO L413 NwaCegarLoop]: 2321 mSDtfsCounter, 1275 mSDsluCounter, 12024 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 274 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 14345 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-20 01:05:29,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 14345 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 55 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-07-20 01:05:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18041 states. [2022-07-20 01:05:29,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18041 to 13219. [2022-07-20 01:05:29,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 9282 states have (on average 1.3200818789054083) internal successors, (12253), 9623 states have internal predecessors, (12253), 3025 states have call successors, (3025), 900 states have call predecessors, (3025), 911 states have return successors, (3186), 2907 states have call predecessors, (3186), 3022 states have call successors, (3186) [2022-07-20 01:05:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 18464 transitions. [2022-07-20 01:05:29,934 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 18464 transitions. Word has length 388 [2022-07-20 01:05:29,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:05:29,934 INFO L495 AbstractCegarLoop]: Abstraction has 13219 states and 18464 transitions. [2022-07-20 01:05:29,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.5) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-20 01:05:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 18464 transitions. [2022-07-20 01:05:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-07-20 01:05:29,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:05:29,944 INFO L195 NwaCegarLoop]: trace histogram [16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:05:30,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-20 01:05:30,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:05:30,145 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:05:30,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:05:30,146 INFO L85 PathProgramCache]: Analyzing trace with hash 643551835, now seen corresponding path program 1 times [2022-07-20 01:05:30,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:05:30,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413000777] [2022-07-20 01:05:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:05:30,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:05:30,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:05:30,149 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:05:30,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-20 01:05:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:05:33,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 3312 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 01:05:33,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:05:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 171 proven. 10 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-20 01:05:33,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:05:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 42 proven. 84 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-07-20 01:05:34,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:05:34,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413000777] [2022-07-20 01:05:34,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413000777] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:05:34,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:05:34,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-20 01:05:34,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820262227] [2022-07-20 01:05:34,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:05:34,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 01:05:34,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:05:34,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 01:05:34,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-20 01:05:34,224 INFO L87 Difference]: Start difference. First operand 13219 states and 18464 transitions. Second operand has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-20 01:05:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:05:36,066 INFO L93 Difference]: Finished difference Result 26497 states and 37041 transitions. [2022-07-20 01:05:36,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-20 01:05:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 389 [2022-07-20 01:05:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:05:36,147 INFO L225 Difference]: With dead ends: 26497 [2022-07-20 01:05:36,148 INFO L226 Difference]: Without dead ends: 13293 [2022-07-20 01:05:36,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=197, Invalid=355, Unknown=0, NotChecked=0, Total=552 [2022-07-20 01:05:36,195 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 30 mSDsluCounter, 7549 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 9061 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 01:05:36,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 9061 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 01:05:36,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13293 states. [2022-07-20 01:05:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13293 to 13283. [2022-07-20 01:05:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13283 states, 9342 states have (on average 1.320595161635624) internal successors, (12337), 9683 states have internal predecessors, (12337), 3025 states have call successors, (3025), 904 states have call predecessors, (3025), 915 states have return successors, (3186), 2907 states have call predecessors, (3186), 3022 states have call successors, (3186) [2022-07-20 01:05:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13283 states to 13283 states and 18548 transitions. [2022-07-20 01:05:36,711 INFO L78 Accepts]: Start accepts. Automaton has 13283 states and 18548 transitions. Word has length 389 [2022-07-20 01:05:36,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:05:36,711 INFO L495 AbstractCegarLoop]: Abstraction has 13283 states and 18548 transitions. [2022-07-20 01:05:36,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-20 01:05:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 13283 states and 18548 transitions. [2022-07-20 01:05:36,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-07-20 01:05:36,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:05:36,722 INFO L195 NwaCegarLoop]: trace histogram [34, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:05:36,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-07-20 01:05:36,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:05:36,923 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:05:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:05:36,923 INFO L85 PathProgramCache]: Analyzing trace with hash -676411589, now seen corresponding path program 2 times [2022-07-20 01:05:36,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:05:36,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998971554] [2022-07-20 01:05:36,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:05:36,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:05:36,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:05:36,927 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:05:36,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-20 01:05:38,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:05:38,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:05:38,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 01:05:38,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:05:38,705 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-07-20 01:05:38,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:05:38,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:05:38,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998971554] [2022-07-20 01:05:38,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998971554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:05:38,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:05:38,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-20 01:05:38,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435098840] [2022-07-20 01:05:38,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:05:38,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 01:05:38,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:05:38,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 01:05:38,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-20 01:05:38,709 INFO L87 Difference]: Start difference. First operand 13283 states and 18548 transitions. Second operand has 10 states, 10 states have (on average 17.8) internal successors, (178), 8 states have internal predecessors, (178), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-20 01:05:43,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:05:43,597 INFO L93 Difference]: Finished difference Result 42136 states and 59309 transitions. [2022-07-20 01:05:43,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-20 01:05:43,598 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 8 states have internal predecessors, (178), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) Word has length 407 [2022-07-20 01:05:43,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:05:43,728 INFO L225 Difference]: With dead ends: 42136 [2022-07-20 01:05:43,728 INFO L226 Difference]: Without dead ends: 28884 [2022-07-20 01:05:43,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-07-20 01:05:43,785 INFO L413 NwaCegarLoop]: 2751 mSDtfsCounter, 2310 mSDsluCounter, 20515 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 23266 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-20 01:05:43,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 23266 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-20 01:05:43,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28884 states. [2022-07-20 01:05:44,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28884 to 26475. [2022-07-20 01:05:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26475 states, 18594 states have (on average 1.3216629020114015) internal successors, (24575), 19295 states have internal predecessors, (24575), 6049 states have call successors, (6049), 1800 states have call predecessors, (6049), 1831 states have return successors, (6390), 5799 states have call predecessors, (6390), 6046 states have call successors, (6390) [2022-07-20 01:05:44,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26475 states to 26475 states and 37014 transitions. [2022-07-20 01:05:44,961 INFO L78 Accepts]: Start accepts. Automaton has 26475 states and 37014 transitions. Word has length 407 [2022-07-20 01:05:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:05:44,962 INFO L495 AbstractCegarLoop]: Abstraction has 26475 states and 37014 transitions. [2022-07-20 01:05:44,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 8 states have internal predecessors, (178), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-20 01:05:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand 26475 states and 37014 transitions. [2022-07-20 01:05:44,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-07-20 01:05:44,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:05:44,989 INFO L195 NwaCegarLoop]: trace histogram [34, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:05:45,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-20 01:05:45,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:05:45,197 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:05:45,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:05:45,197 INFO L85 PathProgramCache]: Analyzing trace with hash 217074749, now seen corresponding path program 1 times [2022-07-20 01:05:45,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:05:45,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960165584] [2022-07-20 01:05:45,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:05:45,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:05:45,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:05:45,201 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:05:45,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-20 01:05:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:05:48,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 3508 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-20 01:05:48,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:05:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 453 proven. 55 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-07-20 01:05:48,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:05:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 72 proven. 321 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2022-07-20 01:05:50,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:05:50,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960165584] [2022-07-20 01:05:50,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960165584] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:05:50,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:05:50,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-20 01:05:50,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244220742] [2022-07-20 01:05:50,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:05:50,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-20 01:05:50,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:05:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-20 01:05:50,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-20 01:05:50,927 INFO L87 Difference]: Start difference. First operand 26475 states and 37014 transitions. Second operand has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-20 01:05:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:05:58,170 INFO L93 Difference]: Finished difference Result 53369 states and 74677 transitions. [2022-07-20 01:05:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-20 01:05:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 407 [2022-07-20 01:05:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:05:58,302 INFO L225 Difference]: With dead ends: 53369 [2022-07-20 01:05:58,302 INFO L226 Difference]: Without dead ends: 26701 [2022-07-20 01:05:58,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-07-20 01:05:58,374 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 148 mSDsluCounter, 16662 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 18180 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 01:05:58,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 18180 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 01:05:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26701 states. [2022-07-20 01:05:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26701 to 26667. [2022-07-20 01:05:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26667 states, 18786 states have (on average 1.3162461407431065) internal successors, (24727), 19487 states have internal predecessors, (24727), 6049 states have call successors, (6049), 1800 states have call predecessors, (6049), 1831 states have return successors, (6390), 5799 states have call predecessors, (6390), 6046 states have call successors, (6390) [2022-07-20 01:05:59,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26667 states to 26667 states and 37166 transitions. [2022-07-20 01:05:59,468 INFO L78 Accepts]: Start accepts. Automaton has 26667 states and 37166 transitions. Word has length 407 [2022-07-20 01:05:59,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:05:59,469 INFO L495 AbstractCegarLoop]: Abstraction has 26667 states and 37166 transitions. [2022-07-20 01:05:59,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-20 01:05:59,469 INFO L276 IsEmpty]: Start isEmpty. Operand 26667 states and 37166 transitions. [2022-07-20 01:05:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-07-20 01:05:59,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:05:59,494 INFO L195 NwaCegarLoop]: trace histogram [70, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:05:59,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-20 01:05:59,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:05:59,716 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:05:59,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:05:59,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1470402045, now seen corresponding path program 2 times [2022-07-20 01:05:59,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:05:59,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955369545] [2022-07-20 01:05:59,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:05:59,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:05:59,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:05:59,719 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:05:59,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-20 01:06:39,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 01:06:39,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:06:40,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 3904 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-20 01:06:40,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:06:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 1449 proven. 253 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2022-07-20 01:06:41,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:06:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 132 proven. 1335 refuted. 0 times theorem prover too weak. 1503 trivial. 0 not checked. [2022-07-20 01:06:48,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:06:48,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955369545] [2022-07-20 01:06:48,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955369545] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:06:48,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:06:48,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-20 01:06:48,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336300250] [2022-07-20 01:06:48,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:06:48,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-20 01:06:48,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:06:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-20 01:06:48,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-07-20 01:06:48,552 INFO L87 Difference]: Start difference. First operand 26667 states and 37166 transitions. Second operand has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-20 01:07:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:07:21,936 INFO L93 Difference]: Finished difference Result 54185 states and 75629 transitions. [2022-07-20 01:07:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-07-20 01:07:21,938 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 443 [2022-07-20 01:07:21,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:07:22,046 INFO L225 Difference]: With dead ends: 54185 [2022-07-20 01:07:22,046 INFO L226 Difference]: Without dead ends: 27133 [2022-07-20 01:07:22,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=3869, Invalid=9013, Unknown=0, NotChecked=0, Total=12882 [2022-07-20 01:07:22,131 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 626 mSDsluCounter, 41136 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 42666 SdHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:07:22,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 42666 Invalid, 2873 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [352 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-07-20 01:07:22,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27133 states. [2022-07-20 01:07:23,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27133 to 27051. [2022-07-20 01:07:23,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27051 states, 19170 states have (on average 1.3099113197704746) internal successors, (25111), 19871 states have internal predecessors, (25111), 6049 states have call successors, (6049), 1800 states have call predecessors, (6049), 1831 states have return successors, (6390), 5799 states have call predecessors, (6390), 6046 states have call successors, (6390) [2022-07-20 01:07:23,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27051 states to 27051 states and 37550 transitions. [2022-07-20 01:07:23,367 INFO L78 Accepts]: Start accepts. Automaton has 27051 states and 37550 transitions. Word has length 443 [2022-07-20 01:07:23,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:07:23,367 INFO L495 AbstractCegarLoop]: Abstraction has 27051 states and 37550 transitions. [2022-07-20 01:07:23,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-20 01:07:23,368 INFO L276 IsEmpty]: Start isEmpty. Operand 27051 states and 37550 transitions. [2022-07-20 01:07:23,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-07-20 01:07:23,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:07:23,387 INFO L195 NwaCegarLoop]: trace histogram [142, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:07:23,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-20 01:07:23,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:07:23,588 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:07:23,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:07:23,589 INFO L85 PathProgramCache]: Analyzing trace with hash -970034819, now seen corresponding path program 3 times [2022-07-20 01:07:23,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:07:23,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990140969] [2022-07-20 01:07:23,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-20 01:07:23,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:07:23,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:07:23,593 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:07:23,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-20 01:07:54,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-20 01:07:54,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:07:54,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 01:07:54,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:07:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10854 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10843 trivial. 0 not checked. [2022-07-20 01:07:54,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:07:54,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:07:54,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990140969] [2022-07-20 01:07:54,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990140969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:07:54,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:07:54,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 01:07:54,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420914032] [2022-07-20 01:07:54,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:07:54,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:07:54,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:07:54,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:07:54,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:07:54,482 INFO L87 Difference]: Start difference. First operand 27051 states and 37550 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2022-07-20 01:07:56,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:07:56,052 INFO L93 Difference]: Finished difference Result 54880 states and 77020 transitions. [2022-07-20 01:07:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:07:56,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 515 [2022-07-20 01:07:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:07:56,160 INFO L225 Difference]: With dead ends: 54880 [2022-07-20 01:07:56,160 INFO L226 Difference]: Without dead ends: 27860 [2022-07-20 01:07:56,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:07:56,228 INFO L413 NwaCegarLoop]: 2246 mSDtfsCounter, 1301 mSDsluCounter, 5174 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 7420 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 01:07:56,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 7420 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 01:07:56,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27860 states. [2022-07-20 01:07:57,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27860 to 22755. [2022-07-20 01:07:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22755 states, 15806 states have (on average 1.3062760976844237) internal successors, (20647), 16463 states have internal predecessors, (20647), 5291 states have call successors, (5291), 1646 states have call predecessors, (5291), 1657 states have return successors, (5534), 5031 states have call predecessors, (5534), 5290 states have call successors, (5534) [2022-07-20 01:07:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22755 states to 22755 states and 31472 transitions. [2022-07-20 01:07:57,225 INFO L78 Accepts]: Start accepts. Automaton has 22755 states and 31472 transitions. Word has length 515 [2022-07-20 01:07:57,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:07:57,225 INFO L495 AbstractCegarLoop]: Abstraction has 22755 states and 31472 transitions. [2022-07-20 01:07:57,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2022-07-20 01:07:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand 22755 states and 31472 transitions. [2022-07-20 01:07:57,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2022-07-20 01:07:57,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:07:57,255 INFO L195 NwaCegarLoop]: trace histogram [142, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:07:57,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-07-20 01:07:57,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:07:57,460 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:07:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:07:57,461 INFO L85 PathProgramCache]: Analyzing trace with hash 530717614, now seen corresponding path program 1 times [2022-07-20 01:07:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:07:57,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625306072] [2022-07-20 01:07:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:07:57,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:07:57,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:07:57,465 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:07:57,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-20 01:08:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:08:01,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 4917 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-20 01:08:01,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:08:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10918 backedges. 5161 proven. 1081 refuted. 0 times theorem prover too weak. 4676 trivial. 0 not checked. [2022-07-20 01:08:08,147 INFO L328 TraceCheckSpWp]: Computing backward predicates...