./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--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 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 14:38:15,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 14:38:15,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 14:38:15,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 14:38:15,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 14:38:15,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 14:38:15,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 14:38:15,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 14:38:15,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 14:38:15,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 14:38:15,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 14:38:15,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 14:38:15,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 14:38:15,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 14:38:15,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 14:38:15,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 14:38:15,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 14:38:15,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 14:38:15,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 14:38:15,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 14:38:15,085 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 14:38:15,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 14:38:15,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 14:38:15,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 14:38:15,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 14:38:15,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 14:38:15,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 14:38:15,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 14:38:15,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 14:38:15,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 14:38:15,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 14:38:15,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 14:38:15,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 14:38:15,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 14:38:15,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 14:38:15,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 14:38:15,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 14:38:15,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 14:38:15,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 14:38:15,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 14:38:15,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 14:38:15,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 14:38:15,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 14:38:15,124 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 14:38:15,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 14:38:15,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 14:38:15,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 14:38:15,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 14:38:15,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 14:38:15,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 14:38:15,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 14:38:15,126 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 14:38:15,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 14:38:15,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 14:38:15,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 14:38:15,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 14:38:15,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 14:38:15,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 14:38:15,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 14:38:15,128 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 14:38:15,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 14:38:15,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 14:38:15,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 14:38:15,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 14:38:15,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 14:38:15,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 14:38:15,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 14:38:15,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 14:38:15,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 14:38:15,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 14:38:15,130 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 14:38:15,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 14:38:15,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 14:38:15,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2022-07-12 14:38:15,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 14:38:15,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 14:38:15,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 14:38:15,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 14:38:15,352 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 14:38:15,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-12 14:38:15,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e185849/3f3d4afcf65a43f192bd6598aa6cd778/FLAGbbb60a70b [2022-07-12 14:38:15,990 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 14:38:15,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-12 14:38:16,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e185849/3f3d4afcf65a43f192bd6598aa6cd778/FLAGbbb60a70b [2022-07-12 14:38:16,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e185849/3f3d4afcf65a43f192bd6598aa6cd778 [2022-07-12 14:38:16,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 14:38:16,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 14:38:16,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 14:38:16,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 14:38:16,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 14:38:16,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:38:16" (1/1) ... [2022-07-12 14:38:16,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cbcab2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:16, skipping insertion in model container [2022-07-12 14:38:16,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:38:16" (1/1) ... [2022-07-12 14:38:16,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 14:38:16,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 14:38:17,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-07-12 14:38:17,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:38:17,433 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 14:38:17,618 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) [2022-07-12 14:38:17,626 INFO L158 Benchmark]: Toolchain (without parser) took 1191.60ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 75.1MB in the beginning and 60.9MB in the end (delta: 14.3MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2022-07-12 14:38:17,626 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 14:38:17,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1190.15ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 74.8MB in the beginning and 60.9MB in the end (delta: 14.0MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2022-07-12 14:38:17,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1190.15ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 74.8MB in the beginning and 60.9MB in the end (delta: 14.0MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--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 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 14:38:19,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 14:38:19,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 14:38:19,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 14:38:19,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 14:38:19,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 14:38:19,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 14:38:19,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 14:38:19,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 14:38:19,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 14:38:19,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 14:38:19,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 14:38:19,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 14:38:19,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 14:38:19,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 14:38:19,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 14:38:19,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 14:38:19,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 14:38:19,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 14:38:19,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 14:38:19,197 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 14:38:19,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 14:38:19,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 14:38:19,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 14:38:19,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 14:38:19,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 14:38:19,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 14:38:19,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 14:38:19,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 14:38:19,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 14:38:19,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 14:38:19,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 14:38:19,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 14:38:19,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 14:38:19,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 14:38:19,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 14:38:19,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 14:38:19,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 14:38:19,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 14:38:19,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 14:38:19,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 14:38:19,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 14:38:19,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-12 14:38:19,242 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 14:38:19,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 14:38:19,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 14:38:19,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 14:38:19,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 14:38:19,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 14:38:19,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 14:38:19,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 14:38:19,244 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 14:38:19,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 14:38:19,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 14:38:19,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 14:38:19,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 14:38:19,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 14:38:19,246 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 14:38:19,246 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 14:38:19,246 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 14:38:19,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 14:38:19,246 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 14:38:19,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 14:38:19,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 14:38:19,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 14:38:19,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 14:38:19,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 14:38:19,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 14:38:19,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 14:38:19,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 14:38:19,248 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 14:38:19,248 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 14:38:19,248 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 14:38:19,248 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 14:38:19,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 14:38:19,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 14:38:19,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2022-07-12 14:38:19,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 14:38:19,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 14:38:19,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 14:38:19,534 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 14:38:19,535 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 14:38:19,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-12 14:38:19,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79f82c24a/9d2cc20612924436893f125abaeacb97/FLAGf0f773c56 [2022-07-12 14:38:20,133 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 14:38:20,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-12 14:38:20,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79f82c24a/9d2cc20612924436893f125abaeacb97/FLAGf0f773c56 [2022-07-12 14:38:20,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79f82c24a/9d2cc20612924436893f125abaeacb97 [2022-07-12 14:38:20,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 14:38:20,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 14:38:20,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 14:38:20,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 14:38:20,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 14:38:20,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:38:20" (1/1) ... [2022-07-12 14:38:20,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408247c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:20, skipping insertion in model container [2022-07-12 14:38:20,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:38:20" (1/1) ... [2022-07-12 14:38:20,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 14:38:20,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 14:38:21,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-07-12 14:38:21,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:38:21,690 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-12 14:38:21,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 14:38:21,957 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-07-12 14:38:21,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:38:21,982 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 14:38:22,214 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-07-12 14:38:22,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:38:22,295 INFO L208 MainTranslator]: Completed translation [2022-07-12 14:38:22,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:22 WrapperNode [2022-07-12 14:38:22,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 14:38:22,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 14:38:22,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 14:38:22,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 14:38:22,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:22" (1/1) ... [2022-07-12 14:38:22,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:22" (1/1) ... [2022-07-12 14:38:22,436 INFO L137 Inliner]: procedures = 220, calls = 1417, calls flagged for inlining = 89, calls inlined = 83, statements flattened = 3216 [2022-07-12 14:38:22,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 14:38:22,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 14:38:22,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 14:38:22,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 14:38:22,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:22" (1/1) ... [2022-07-12 14:38:22,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:22" (1/1) ... [2022-07-12 14:38:22,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:22" (1/1) ... [2022-07-12 14:38:22,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:22" (1/1) ... [2022-07-12 14:38:22,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:22" (1/1) ... [2022-07-12 14:38:22,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:22" (1/1) ... [2022-07-12 14:38:22,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:22" (1/1) ... [2022-07-12 14:38:22,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 14:38:22,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 14:38:22,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 14:38:22,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 14:38:22,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:22" (1/1) ... [2022-07-12 14:38:22,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 14:38:22,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 14:38:22,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 14:38:22,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 14:38:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-12 14:38:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-12 14:38:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-12 14:38:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-12 14:38:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2022-07-12 14:38:22,680 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2022-07-12 14:38:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 14:38:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 14:38:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-12 14:38:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 14:38:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 14:38:22,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 14:38:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-12 14:38:22,681 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-12 14:38:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-07-12 14:38:22,681 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-07-12 14:38:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2022-07-12 14:38:22,681 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2022-07-12 14:38:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-12 14:38:22,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-12 14:38:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 14:38:22,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 14:38:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-07-12 14:38:22,682 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-07-12 14:38:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-12 14:38:22,682 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-12 14:38:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 14:38:22,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 14:38:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2022-07-12 14:38:22,683 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2022-07-12 14:38:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-07-12 14:38:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-07-12 14:38:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 14:38:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 14:38:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 14:38:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 14:38:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2022-07-12 14:38:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2022-07-12 14:38:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 14:38:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 14:38:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2022-07-12 14:38:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2022-07-12 14:38:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 14:38:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-12 14:38:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-12 14:38:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-07-12 14:38:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-07-12 14:38:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2022-07-12 14:38:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2022-07-12 14:38:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 14:38:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-07-12 14:38:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-07-12 14:38:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-07-12 14:38:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-07-12 14:38:22,689 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-12 14:38:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-12 14:38:22,689 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2022-07-12 14:38:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2022-07-12 14:38:22,689 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-12 14:38:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-12 14:38:22,689 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2022-07-12 14:38:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2022-07-12 14:38:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-12 14:38:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-12 14:38:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-12 14:38:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 14:38:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 14:38:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 14:38:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-12 14:38:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 14:38:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-12 14:38:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-12 14:38:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2022-07-12 14:38:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2022-07-12 14:38:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2022-07-12 14:38:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2022-07-12 14:38:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-12 14:38:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-12 14:38:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-07-12 14:38:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-07-12 14:38:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-12 14:38:22,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-12 14:38:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2022-07-12 14:38:22,693 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2022-07-12 14:38:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-12 14:38:22,693 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-12 14:38:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-12 14:38:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-12 14:38:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2022-07-12 14:38:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2022-07-12 14:38:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-12 14:38:22,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-12 14:38:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2022-07-12 14:38:22,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2022-07-12 14:38:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2022-07-12 14:38:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2022-07-12 14:38:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2022-07-12 14:38:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2022-07-12 14:38:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 14:38:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 14:38:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-12 14:38:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-12 14:38:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-12 14:38:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-12 14:38:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-12 14:38:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-12 14:38:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2022-07-12 14:38:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2022-07-12 14:38:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-07-12 14:38:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-07-12 14:38:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-07-12 14:38:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-07-12 14:38:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2022-07-12 14:38:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2022-07-12 14:38:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2022-07-12 14:38:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2022-07-12 14:38:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-12 14:38:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-12 14:38:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-12 14:38:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-12 14:38:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 14:38:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 14:38:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-12 14:38:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-12 14:38:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2022-07-12 14:38:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2022-07-12 14:38:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 14:38:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 14:38:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 14:38:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-12 14:38:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-12 14:38:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 14:38:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 14:38:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-12 14:38:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-07-12 14:38:22,709 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-07-12 14:38:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2022-07-12 14:38:22,709 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2022-07-12 14:38:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-12 14:38:22,709 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-12 14:38:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2022-07-12 14:38:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2022-07-12 14:38:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2022-07-12 14:38:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2022-07-12 14:38:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-07-12 14:38:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-07-12 14:38:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2022-07-12 14:38:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2022-07-12 14:38:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-12 14:38:22,711 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-12 14:38:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-07-12 14:38:22,711 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-07-12 14:38:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2022-07-12 14:38:22,711 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2022-07-12 14:38:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2022-07-12 14:38:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2022-07-12 14:38:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2022-07-12 14:38:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2022-07-12 14:38:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-12 14:38:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2022-07-12 14:38:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2022-07-12 14:38:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-12 14:38:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-12 14:38:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 14:38:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 14:38:23,194 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 14:38:23,196 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 14:38:23,787 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 14:38:34,492 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 14:38:34,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 14:38:34,502 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 14:38:34,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:38:34 BoogieIcfgContainer [2022-07-12 14:38:34,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 14:38:34,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 14:38:34,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 14:38:34,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 14:38:34,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:38:20" (1/3) ... [2022-07-12 14:38:34,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e757201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:38:34, skipping insertion in model container [2022-07-12 14:38:34,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:22" (2/3) ... [2022-07-12 14:38:34,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e757201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:38:34, skipping insertion in model container [2022-07-12 14:38:34,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:38:34" (3/3) ... [2022-07-12 14:38:34,510 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-12 14:38:34,518 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 14:38:34,519 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 14:38:34,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 14:38:34,578 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@50da6c13, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@bf72052 [2022-07-12 14:38:34,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 14:38:34,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 1052 states, 741 states have (on average 1.3454790823211875) internal successors, (997), 774 states have internal predecessors, (997), 243 states have call successors, (243), 67 states have call predecessors, (243), 66 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2022-07-12 14:38:34,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 14:38:34,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:34,600 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 14:38:34,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:34,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1866951613, now seen corresponding path program 1 times [2022-07-12 14:38:34,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:34,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426239021] [2022-07-12 14:38:34,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:34,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:34,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:34,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:38:34,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 14:38:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:35,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 14:38:35,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 14:38:35,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:35,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:35,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426239021] [2022-07-12 14:38:35,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426239021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:35,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:35,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:38:35,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133036465] [2022-07-12 14:38:35,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:35,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:38:35,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:38:35,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:38:35,793 INFO L87 Difference]: Start difference. First operand has 1052 states, 741 states have (on average 1.3454790823211875) internal successors, (997), 774 states have internal predecessors, (997), 243 states have call successors, (243), 67 states have call predecessors, (243), 66 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 14:38:35,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:36,000 INFO L93 Difference]: Finished difference Result 2102 states and 3025 transitions. [2022-07-12 14:38:36,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:38:36,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 98 [2022-07-12 14:38:36,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:36,022 INFO L225 Difference]: With dead ends: 2102 [2022-07-12 14:38:36,024 INFO L226 Difference]: Without dead ends: 1037 [2022-07-12 14:38:36,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:38:36,038 INFO L413 NwaCegarLoop]: 1472 mSDtfsCounter, 346 mSDsluCounter, 3991 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 5463 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 [2022-07-12 14:38:36,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 5463 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:38:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-07-12 14:38:36,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1037. [2022-07-12 14:38:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 733 states have (on average 1.3369713506139154) internal successors, (980), 759 states have internal predecessors, (980), 238 states have call successors, (238), 66 states have call predecessors, (238), 65 states have return successors, (237), 229 states have call predecessors, (237), 237 states have call successors, (237) [2022-07-12 14:38:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1455 transitions. [2022-07-12 14:38:36,119 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1455 transitions. Word has length 98 [2022-07-12 14:38:36,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:36,120 INFO L495 AbstractCegarLoop]: Abstraction has 1037 states and 1455 transitions. [2022-07-12 14:38:36,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 14:38:36,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1455 transitions. [2022-07-12 14:38:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 14:38:36,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:36,124 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 14:38:36,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 14:38:36,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:36,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:36,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:36,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2076110020, now seen corresponding path program 1 times [2022-07-12 14:38:36,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:36,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563419487] [2022-07-12 14:38:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:36,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:36,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:36,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:38:36,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 14:38:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:37,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 14:38:37,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 14:38:37,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:38:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 14:38:37,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:37,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563419487] [2022-07-12 14:38:37,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563419487] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:38:37,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:38:37,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-07-12 14:38:37,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213266185] [2022-07-12 14:38:37,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:38:37,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 14:38:37,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:37,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 14:38:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 14:38:37,713 INFO L87 Difference]: Start difference. First operand 1037 states and 1455 transitions. Second operand has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 9 states have internal predecessors, (57), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 14:38:38,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:38,119 INFO L93 Difference]: Finished difference Result 2067 states and 2905 transitions. [2022-07-12 14:38:38,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:38:38,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 9 states have internal predecessors, (57), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) Word has length 99 [2022-07-12 14:38:38,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:38,125 INFO L225 Difference]: With dead ends: 2067 [2022-07-12 14:38:38,125 INFO L226 Difference]: Without dead ends: 1038 [2022-07-12 14:38:38,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-12 14:38:38,129 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 663 mSDsluCounter, 8291 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 9743 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:38,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 9743 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 14:38:38,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-07-12 14:38:38,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2022-07-12 14:38:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 734 states have (on average 1.3365122615803815) internal successors, (981), 760 states have internal predecessors, (981), 238 states have call successors, (238), 66 states have call predecessors, (238), 65 states have return successors, (237), 229 states have call predecessors, (237), 237 states have call successors, (237) [2022-07-12 14:38:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1456 transitions. [2022-07-12 14:38:38,193 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1456 transitions. Word has length 99 [2022-07-12 14:38:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:38,194 INFO L495 AbstractCegarLoop]: Abstraction has 1038 states and 1456 transitions. [2022-07-12 14:38:38,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 9 states have internal predecessors, (57), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 14:38:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1456 transitions. [2022-07-12 14:38:38,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 14:38:38,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:38,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:38:38,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 14:38:38,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:38,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:38,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:38,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1535666967, now seen corresponding path program 1 times [2022-07-12 14:38:38,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:38,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662156951] [2022-07-12 14:38:38,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:38,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:38,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:38,414 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:38:38,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 14:38:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:39,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 14:38:39,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 14:38:39,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:38:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 14:38:40,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:40,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662156951] [2022-07-12 14:38:40,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662156951] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:38:40,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:38:40,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-12 14:38:40,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091744757] [2022-07-12 14:38:40,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:38:40,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 14:38:40,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:40,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 14:38:40,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-12 14:38:40,082 INFO L87 Difference]: Start difference. First operand 1038 states and 1456 transitions. Second operand has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 14:38:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:40,338 INFO L93 Difference]: Finished difference Result 2069 states and 2907 transitions. [2022-07-12 14:38:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:38:40,339 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) Word has length 101 [2022-07-12 14:38:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:40,344 INFO L225 Difference]: With dead ends: 2069 [2022-07-12 14:38:40,344 INFO L226 Difference]: Without dead ends: 1039 [2022-07-12 14:38:40,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-12 14:38:40,348 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 336 mSDsluCounter, 7888 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 9340 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:40,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 9340 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 14:38:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2022-07-12 14:38:40,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2022-07-12 14:38:40,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 735 states have (on average 1.3360544217687076) internal successors, (982), 761 states have internal predecessors, (982), 238 states have call successors, (238), 66 states have call predecessors, (238), 65 states have return successors, (237), 229 states have call predecessors, (237), 237 states have call successors, (237) [2022-07-12 14:38:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1457 transitions. [2022-07-12 14:38:40,371 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1457 transitions. Word has length 101 [2022-07-12 14:38:40,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:40,371 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1457 transitions. [2022-07-12 14:38:40,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 14:38:40,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1457 transitions. [2022-07-12 14:38:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 14:38:40,373 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:40,373 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 14:38:40,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 14:38:40,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:40,595 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:40,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:40,596 INFO L85 PathProgramCache]: Analyzing trace with hash -892147740, now seen corresponding path program 2 times [2022-07-12 14:38:40,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:40,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094303877] [2022-07-12 14:38:40,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:38:40,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:40,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:40,599 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:38:40,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 14:38:41,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:38:41,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:38:41,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:38:41,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-12 14:38:41,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:41,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:41,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094303877] [2022-07-12 14:38:41,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094303877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:41,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:41,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:38:41,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391108149] [2022-07-12 14:38:41,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:41,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:38:41,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:41,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:38:41,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:41,483 INFO L87 Difference]: Start difference. First operand 1039 states and 1457 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 14:38:41,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:41,702 INFO L93 Difference]: Finished difference Result 3073 states and 4372 transitions. [2022-07-12 14:38:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:38:41,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2022-07-12 14:38:41,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:41,711 INFO L225 Difference]: With dead ends: 3073 [2022-07-12 14:38:41,711 INFO L226 Difference]: Without dead ends: 2047 [2022-07-12 14:38:41,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:41,714 INFO L413 NwaCegarLoop]: 1744 mSDtfsCounter, 1417 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:41,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 3201 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:38:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2022-07-12 14:38:41,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2044. [2022-07-12 14:38:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1447 states have (on average 1.336558396682792) internal successors, (1934), 1499 states have internal predecessors, (1934), 469 states have call successors, (469), 131 states have call predecessors, (469), 127 states have return successors, (493), 447 states have call predecessors, (493), 468 states have call successors, (493) [2022-07-12 14:38:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2896 transitions. [2022-07-12 14:38:41,761 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2896 transitions. Word has length 101 [2022-07-12 14:38:41,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:41,761 INFO L495 AbstractCegarLoop]: Abstraction has 2044 states and 2896 transitions. [2022-07-12 14:38:41,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 14:38:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2896 transitions. [2022-07-12 14:38:41,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 14:38:41,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:41,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 14:38:41,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 14:38:41,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:41,979 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:41,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1799856770, now seen corresponding path program 2 times [2022-07-12 14:38:41,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:41,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657231976] [2022-07-12 14:38:41,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:38:41,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:41,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:41,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:38:41,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 14:38:42,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:38:42,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:38:42,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:38:42,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:42,917 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-12 14:38:42,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:42,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:42,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657231976] [2022-07-12 14:38:42,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657231976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:42,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:42,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:38:42,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279072924] [2022-07-12 14:38:42,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:42,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:38:42,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:42,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:38:42,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:42,919 INFO L87 Difference]: Start difference. First operand 2044 states and 2896 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 14:38:43,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:43,150 INFO L93 Difference]: Finished difference Result 5091 states and 7315 transitions. [2022-07-12 14:38:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:38:43,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 102 [2022-07-12 14:38:43,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:43,166 INFO L225 Difference]: With dead ends: 5091 [2022-07-12 14:38:43,167 INFO L226 Difference]: Without dead ends: 3060 [2022-07-12 14:38:43,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:43,176 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 1431 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:43,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 3138 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:38:43,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2022-07-12 14:38:43,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3057. [2022-07-12 14:38:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3057 states, 2166 states have (on average 1.33471837488458) internal successors, (2891), 2244 states have internal predecessors, (2891), 698 states have call successors, (698), 196 states have call predecessors, (698), 192 states have return successors, (771), 668 states have call predecessors, (771), 697 states have call successors, (771) [2022-07-12 14:38:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 4360 transitions. [2022-07-12 14:38:43,267 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 4360 transitions. Word has length 102 [2022-07-12 14:38:43,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:43,269 INFO L495 AbstractCegarLoop]: Abstraction has 3057 states and 4360 transitions. [2022-07-12 14:38:43,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 14:38:43,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 4360 transitions. [2022-07-12 14:38:43,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-12 14:38:43,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:43,271 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:38:43,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-12 14:38:43,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:43,487 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:43,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:43,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1090911955, now seen corresponding path program 1 times [2022-07-12 14:38:43,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:43,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067740597] [2022-07-12 14:38:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:43,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:43,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:43,491 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:38:43,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 14:38:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:44,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 14:38:44,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 14:38:44,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:38:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 14:38:45,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:45,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067740597] [2022-07-12 14:38:45,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067740597] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:38:45,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:38:45,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-12 14:38:45,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409989125] [2022-07-12 14:38:45,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:38:45,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 14:38:45,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:45,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 14:38:45,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-12 14:38:45,270 INFO L87 Difference]: Start difference. First operand 3057 states and 4360 transitions. Second operand has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 14:38:45,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:45,563 INFO L93 Difference]: Finished difference Result 6113 states and 8731 transitions. [2022-07-12 14:38:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 14:38:45,564 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) Word has length 103 [2022-07-12 14:38:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:45,580 INFO L225 Difference]: With dead ends: 6113 [2022-07-12 14:38:45,580 INFO L226 Difference]: Without dead ends: 3060 [2022-07-12 14:38:45,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-12 14:38:45,593 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 337 mSDsluCounter, 9337 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 10789 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:45,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 10789 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 14:38:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2022-07-12 14:38:45,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3060. [2022-07-12 14:38:45,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 2169 states have (on average 1.334255417242969) internal successors, (2894), 2247 states have internal predecessors, (2894), 698 states have call successors, (698), 196 states have call predecessors, (698), 192 states have return successors, (771), 668 states have call predecessors, (771), 697 states have call successors, (771) [2022-07-12 14:38:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4363 transitions. [2022-07-12 14:38:45,673 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4363 transitions. Word has length 103 [2022-07-12 14:38:45,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:45,674 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 4363 transitions. [2022-07-12 14:38:45,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 14:38:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4363 transitions. [2022-07-12 14:38:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 14:38:45,679 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:45,680 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 14:38:45,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 14:38:45,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:45,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:45,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:45,888 INFO L85 PathProgramCache]: Analyzing trace with hash -729703118, now seen corresponding path program 1 times [2022-07-12 14:38:45,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:45,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641776353] [2022-07-12 14:38:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:45,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:45,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:45,890 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:38:45,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 14:38:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:46,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:38:46,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 14:38:46,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:46,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:46,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641776353] [2022-07-12 14:38:46,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641776353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:46,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:46,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:38:46,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782257950] [2022-07-12 14:38:46,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:46,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:38:46,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:46,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:38:46,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:46,877 INFO L87 Difference]: Start difference. First operand 3060 states and 4363 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 14:38:47,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:47,131 INFO L93 Difference]: Finished difference Result 7122 states and 10314 transitions. [2022-07-12 14:38:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:38:47,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 105 [2022-07-12 14:38:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:47,150 INFO L225 Difference]: With dead ends: 7122 [2022-07-12 14:38:47,150 INFO L226 Difference]: Without dead ends: 4075 [2022-07-12 14:38:47,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:47,162 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 1433 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:47,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 3138 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:38:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2022-07-12 14:38:47,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4072. [2022-07-12 14:38:47,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4072 states, 2889 states have (on average 1.332987192800277) internal successors, (3851), 2993 states have internal predecessors, (3851), 925 states have call successors, (925), 261 states have call predecessors, (925), 257 states have return successors, (1062), 887 states have call predecessors, (1062), 924 states have call successors, (1062) [2022-07-12 14:38:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4072 states to 4072 states and 5838 transitions. [2022-07-12 14:38:47,291 INFO L78 Accepts]: Start accepts. Automaton has 4072 states and 5838 transitions. Word has length 105 [2022-07-12 14:38:47,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:47,292 INFO L495 AbstractCegarLoop]: Abstraction has 4072 states and 5838 transitions. [2022-07-12 14:38:47,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 14:38:47,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4072 states and 5838 transitions. [2022-07-12 14:38:47,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 14:38:47,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:47,295 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:38:47,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-12 14:38:47,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:47,508 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:47,509 INFO L85 PathProgramCache]: Analyzing trace with hash 301796486, now seen corresponding path program 2 times [2022-07-12 14:38:47,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:47,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970083404] [2022-07-12 14:38:47,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:38:47,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:47,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:47,511 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:38:47,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-12 14:38:48,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:38:48,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:38:48,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:38:48,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 14:38:48,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:48,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:48,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970083404] [2022-07-12 14:38:48,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970083404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:48,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:48,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:38:48,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127413497] [2022-07-12 14:38:48,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:48,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:38:48,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:48,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:38:48,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:48,476 INFO L87 Difference]: Start difference. First operand 4072 states and 5838 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 14:38:48,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:48,722 INFO L93 Difference]: Finished difference Result 9141 states and 13298 transitions. [2022-07-12 14:38:48,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:38:48,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 104 [2022-07-12 14:38:48,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:48,786 INFO L225 Difference]: With dead ends: 9141 [2022-07-12 14:38:48,786 INFO L226 Difference]: Without dead ends: 5082 [2022-07-12 14:38:48,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:48,798 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1423 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:48,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 3134 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:38:48,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2022-07-12 14:38:48,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 5079. [2022-07-12 14:38:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5079 states, 3606 states have (on average 1.331392124237382) internal successors, (4801), 3736 states have internal predecessors, (4801), 1150 states have call successors, (1150), 326 states have call predecessors, (1150), 322 states have return successors, (1354), 1104 states have call predecessors, (1354), 1149 states have call successors, (1354) [2022-07-12 14:38:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 7305 transitions. [2022-07-12 14:38:48,915 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 7305 transitions. Word has length 104 [2022-07-12 14:38:48,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:48,915 INFO L495 AbstractCegarLoop]: Abstraction has 5079 states and 7305 transitions. [2022-07-12 14:38:48,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 14:38:48,915 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 7305 transitions. [2022-07-12 14:38:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 14:38:48,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:48,919 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:38:48,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-12 14:38:49,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:49,132 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:49,132 INFO L85 PathProgramCache]: Analyzing trace with hash -388977383, now seen corresponding path program 1 times [2022-07-12 14:38:49,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:49,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746224860] [2022-07-12 14:38:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:49,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:49,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:49,134 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:38:49,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-12 14:38:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:50,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:38:50,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-12 14:38:50,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:50,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:50,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746224860] [2022-07-12 14:38:50,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746224860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:50,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:50,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:38:50,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070267981] [2022-07-12 14:38:50,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:50,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:38:50,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:50,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:38:50,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:50,179 INFO L87 Difference]: Start difference. First operand 5079 states and 7305 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 14:38:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:50,572 INFO L93 Difference]: Finished difference Result 14616 states and 21098 transitions. [2022-07-12 14:38:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:38:50,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 126 [2022-07-12 14:38:50,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:50,629 INFO L225 Difference]: With dead ends: 14616 [2022-07-12 14:38:50,629 INFO L226 Difference]: Without dead ends: 9550 [2022-07-12 14:38:50,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:50,652 INFO L413 NwaCegarLoop]: 2277 mSDtfsCounter, 1281 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:50,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 3683 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 14:38:50,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9550 states. [2022-07-12 14:38:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9550 to 9502. [2022-07-12 14:38:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9502 states, 6757 states have (on average 1.3278081989048394) internal successors, (8972), 6997 states have internal predecessors, (8972), 2120 states have call successors, (2120), 636 states have call predecessors, (2120), 624 states have return successors, (2661), 2020 states have call predecessors, (2661), 2119 states have call successors, (2661) [2022-07-12 14:38:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9502 states to 9502 states and 13753 transitions. [2022-07-12 14:38:50,913 INFO L78 Accepts]: Start accepts. Automaton has 9502 states and 13753 transitions. Word has length 126 [2022-07-12 14:38:50,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:50,914 INFO L495 AbstractCegarLoop]: Abstraction has 9502 states and 13753 transitions. [2022-07-12 14:38:50,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 14:38:50,914 INFO L276 IsEmpty]: Start isEmpty. Operand 9502 states and 13753 transitions. [2022-07-12 14:38:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-12 14:38:50,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:50,919 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:38:50,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-12 14:38:51,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:51,140 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:51,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash -105772959, now seen corresponding path program 1 times [2022-07-12 14:38:51,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:51,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770169104] [2022-07-12 14:38:51,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:51,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:51,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:51,143 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:38:51,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-12 14:38:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:52,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 2213 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:38:52,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 14:38:52,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:52,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:52,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770169104] [2022-07-12 14:38:52,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770169104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:52,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:52,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:38:52,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209372334] [2022-07-12 14:38:52,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:52,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:38:52,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:52,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:38:52,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:52,478 INFO L87 Difference]: Start difference. First operand 9502 states and 13753 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 14:38:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:52,906 INFO L93 Difference]: Finished difference Result 25640 states and 37172 transitions. [2022-07-12 14:38:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:38:52,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 202 [2022-07-12 14:38:52,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:52,976 INFO L225 Difference]: With dead ends: 25640 [2022-07-12 14:38:52,976 INFO L226 Difference]: Without dead ends: 16151 [2022-07-12 14:38:53,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:53,007 INFO L413 NwaCegarLoop]: 2395 mSDtfsCounter, 1045 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:53,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 3802 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 14:38:53,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16151 states. [2022-07-12 14:38:53,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16151 to 16138. [2022-07-12 14:38:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16138 states, 11385 states have (on average 1.3246376811594203) internal successors, (15081), 11825 states have internal predecessors, (15081), 3667 states have call successors, (3667), 1108 states have call predecessors, (3667), 1085 states have return successors, (4666), 3478 states have call predecessors, (4666), 3666 states have call successors, (4666) [2022-07-12 14:38:53,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16138 states to 16138 states and 23414 transitions. [2022-07-12 14:38:53,491 INFO L78 Accepts]: Start accepts. Automaton has 16138 states and 23414 transitions. Word has length 202 [2022-07-12 14:38:53,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:53,491 INFO L495 AbstractCegarLoop]: Abstraction has 16138 states and 23414 transitions. [2022-07-12 14:38:53,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 14:38:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 16138 states and 23414 transitions. [2022-07-12 14:38:53,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-12 14:38:53,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:53,497 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:38:53,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-12 14:38:53,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:53,709 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:53,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:53,709 INFO L85 PathProgramCache]: Analyzing trace with hash -363337089, now seen corresponding path program 1 times [2022-07-12 14:38:53,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:53,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558874595] [2022-07-12 14:38:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:53,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:53,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:53,712 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:38:53,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-12 14:38:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:55,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 2307 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 14:38:55,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-12 14:38:55,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:55,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:55,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558874595] [2022-07-12 14:38:55,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558874595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:55,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:55,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 14:38:55,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900972876] [2022-07-12 14:38:55,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:55,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 14:38:55,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:55,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 14:38:55,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 14:38:55,344 INFO L87 Difference]: Start difference. First operand 16138 states and 23414 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 14:38:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:55,996 INFO L93 Difference]: Finished difference Result 37228 states and 55151 transitions. [2022-07-12 14:38:55,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:38:55,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 231 [2022-07-12 14:38:55,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:56,077 INFO L225 Difference]: With dead ends: 37228 [2022-07-12 14:38:56,078 INFO L226 Difference]: Without dead ends: 21118 [2022-07-12 14:38:56,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:38:56,129 INFO L413 NwaCegarLoop]: 1906 mSDtfsCounter, 639 mSDsluCounter, 3315 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 5221 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:56,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 5221 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 14:38:56,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21118 states. [2022-07-12 14:38:56,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21118 to 16158. [2022-07-12 14:38:56,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16158 states, 11405 states have (on average 1.324068391056554) internal successors, (15101), 11845 states have internal predecessors, (15101), 3667 states have call successors, (3667), 1108 states have call predecessors, (3667), 1085 states have return successors, (4666), 3478 states have call predecessors, (4666), 3666 states have call successors, (4666) [2022-07-12 14:38:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16158 states to 16158 states and 23434 transitions. [2022-07-12 14:38:56,700 INFO L78 Accepts]: Start accepts. Automaton has 16158 states and 23434 transitions. Word has length 231 [2022-07-12 14:38:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:38:56,701 INFO L495 AbstractCegarLoop]: Abstraction has 16158 states and 23434 transitions. [2022-07-12 14:38:56,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 14:38:56,701 INFO L276 IsEmpty]: Start isEmpty. Operand 16158 states and 23434 transitions. [2022-07-12 14:38:56,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-07-12 14:38:56,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:38:56,706 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-12 14:38:56,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-12 14:38:56,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:38:56,919 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:38:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:38:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2080841875, now seen corresponding path program 1 times [2022-07-12 14:38:56,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:38:56,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695422174] [2022-07-12 14:38:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:38:56,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:38:56,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:38:56,923 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:38:56,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-12 14:38:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:38:58,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 2322 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:38:58,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:38:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-12 14:38:58,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:38:58,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:38:58,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695422174] [2022-07-12 14:38:58,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695422174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:38:58,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:38:58,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:38:58,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272575513] [2022-07-12 14:38:58,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:38:58,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:38:58,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:38:58,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:38:58,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:58,421 INFO L87 Difference]: Start difference. First operand 16158 states and 23434 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-12 14:38:59,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:38:59,169 INFO L93 Difference]: Finished difference Result 39572 states and 57462 transitions. [2022-07-12 14:38:59,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:38:59,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 247 [2022-07-12 14:38:59,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:38:59,259 INFO L225 Difference]: With dead ends: 39572 [2022-07-12 14:38:59,259 INFO L226 Difference]: Without dead ends: 23442 [2022-07-12 14:38:59,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:38:59,310 INFO L413 NwaCegarLoop]: 2471 mSDtfsCounter, 1287 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:38:59,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 3695 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 14:38:59,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23442 states. [2022-07-12 14:38:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23442 to 23429. [2022-07-12 14:38:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23429 states, 16542 states have (on average 1.323177366702938) internal successors, (21888), 17182 states have internal predecessors, (21888), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1584 states have return successors, (6759), 5024 states have call predecessors, (6759), 5301 states have call successors, (6759) [2022-07-12 14:39:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23429 states to 23429 states and 33949 transitions. [2022-07-12 14:39:00,013 INFO L78 Accepts]: Start accepts. Automaton has 23429 states and 33949 transitions. Word has length 247 [2022-07-12 14:39:00,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:39:00,014 INFO L495 AbstractCegarLoop]: Abstraction has 23429 states and 33949 transitions. [2022-07-12 14:39:00,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-12 14:39:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 23429 states and 33949 transitions. [2022-07-12 14:39:00,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-12 14:39:00,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:39:00,021 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:39:00,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-12 14:39:00,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:39:00,247 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:39:00,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:39:00,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1591102348, now seen corresponding path program 1 times [2022-07-12 14:39:00,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:39:00,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879370096] [2022-07-12 14:39:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:39:00,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:39:00,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:39:00,252 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:39:00,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-12 14:39:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:39:01,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 2367 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:39:01,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:39:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-12 14:39:01,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:39:01,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:39:01,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879370096] [2022-07-12 14:39:01,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879370096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:39:01,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:39:01,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:39:01,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822720375] [2022-07-12 14:39:01,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:39:01,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:39:01,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:39:01,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:39:01,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:39:01,986 INFO L87 Difference]: Start difference. First operand 23429 states and 33949 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 14:39:02,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:39:02,771 INFO L93 Difference]: Finished difference Result 50505 states and 73946 transitions. [2022-07-12 14:39:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:39:02,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 254 [2022-07-12 14:39:02,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:39:02,972 INFO L225 Difference]: With dead ends: 50505 [2022-07-12 14:39:02,991 INFO L226 Difference]: Without dead ends: 27104 [2022-07-12 14:39:03,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:39:03,172 INFO L413 NwaCegarLoop]: 1756 mSDtfsCounter, 235 mSDsluCounter, 4999 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 6755 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 [2022-07-12 14:39:03,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 6755 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:39:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27104 states. [2022-07-12 14:39:03,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27104 to 23469. [2022-07-12 14:39:03,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23469 states, 16572 states have (on average 1.3225923244026068) internal successors, (21918), 17212 states have internal predecessors, (21918), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1594 states have return successors, (6779), 5034 states have call predecessors, (6779), 5301 states have call successors, (6779) [2022-07-12 14:39:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23469 states to 23469 states and 33999 transitions. [2022-07-12 14:39:04,021 INFO L78 Accepts]: Start accepts. Automaton has 23469 states and 33999 transitions. Word has length 254 [2022-07-12 14:39:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:39:04,021 INFO L495 AbstractCegarLoop]: Abstraction has 23469 states and 33999 transitions. [2022-07-12 14:39:04,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 14:39:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 23469 states and 33999 transitions. [2022-07-12 14:39:04,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-12 14:39:04,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:39:04,029 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:39:04,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-12 14:39:04,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:39:04,244 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:39:04,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:39:04,244 INFO L85 PathProgramCache]: Analyzing trace with hash 87904741, now seen corresponding path program 1 times [2022-07-12 14:39:04,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:39:04,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129416228] [2022-07-12 14:39:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:39:04,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:39:04,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:39:04,247 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:39:04,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-12 14:39:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:39:05,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:39:05,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:39:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-12 14:39:06,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:39:06,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:39:06,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129416228] [2022-07-12 14:39:06,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129416228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:39:06,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:39:06,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:39:06,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857265356] [2022-07-12 14:39:06,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:39:06,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:39:06,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:39:06,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:39:06,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:39:06,046 INFO L87 Difference]: Start difference. First operand 23469 states and 33999 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 14:39:06,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:39:06,768 INFO L93 Difference]: Finished difference Result 50605 states and 74066 transitions. [2022-07-12 14:39:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:39:06,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 260 [2022-07-12 14:39:06,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:39:06,857 INFO L225 Difference]: With dead ends: 50605 [2022-07-12 14:39:06,857 INFO L226 Difference]: Without dead ends: 27164 [2022-07-12 14:39:06,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:39:06,912 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 235 mSDsluCounter, 5038 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 6811 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:39:06,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 6811 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:39:06,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27164 states. [2022-07-12 14:39:07,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27164 to 23509. [2022-07-12 14:39:07,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23509 states, 16602 states have (on average 1.322009396458258) internal successors, (21948), 17242 states have internal predecessors, (21948), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5044 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-12 14:39:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23509 states to 23509 states and 34049 transitions. [2022-07-12 14:39:07,704 INFO L78 Accepts]: Start accepts. Automaton has 23509 states and 34049 transitions. Word has length 260 [2022-07-12 14:39:07,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:39:07,705 INFO L495 AbstractCegarLoop]: Abstraction has 23509 states and 34049 transitions. [2022-07-12 14:39:07,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 14:39:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 23509 states and 34049 transitions. [2022-07-12 14:39:07,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-12 14:39:07,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:39:07,715 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:39:07,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-12 14:39:07,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:39:07,932 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:39:07,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:39:07,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1808713068, now seen corresponding path program 1 times [2022-07-12 14:39:07,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:39:07,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029027969] [2022-07-12 14:39:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:39:07,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:39:07,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:39:07,935 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:39:07,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-12 14:39:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:39:09,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:39:09,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:39:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-12 14:39:09,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:39:09,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:39:09,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029027969] [2022-07-12 14:39:09,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029027969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:39:09,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:39:09,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:39:09,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857203197] [2022-07-12 14:39:09,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:39:09,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:39:09,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:39:09,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:39:09,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:39:09,881 INFO L87 Difference]: Start difference. First operand 23509 states and 34049 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 14:39:10,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:39:10,712 INFO L93 Difference]: Finished difference Result 47170 states and 68435 transitions. [2022-07-12 14:39:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 14:39:10,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 261 [2022-07-12 14:39:10,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:39:10,786 INFO L225 Difference]: With dead ends: 47170 [2022-07-12 14:39:10,786 INFO L226 Difference]: Without dead ends: 23689 [2022-07-12 14:39:10,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:39:10,833 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 8 mSDsluCounter, 4341 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5790 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 [2022-07-12 14:39:10,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5790 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:39:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23689 states. [2022-07-12 14:39:11,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23689 to 23609. [2022-07-12 14:39:11,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23609 states, 16702 states have (on average 1.3200814273739672) internal successors, (22048), 17342 states have internal predecessors, (22048), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5044 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-12 14:39:11,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23609 states to 23609 states and 34149 transitions. [2022-07-12 14:39:11,562 INFO L78 Accepts]: Start accepts. Automaton has 23609 states and 34149 transitions. Word has length 261 [2022-07-12 14:39:11,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:39:11,562 INFO L495 AbstractCegarLoop]: Abstraction has 23609 states and 34149 transitions. [2022-07-12 14:39:11,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 14:39:11,562 INFO L276 IsEmpty]: Start isEmpty. Operand 23609 states and 34149 transitions. [2022-07-12 14:39:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-12 14:39:11,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:39:11,568 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:39:11,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-12 14:39:11,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:39:11,788 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:39:11,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:39:11,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1429505202, now seen corresponding path program 1 times [2022-07-12 14:39:11,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:39:11,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719428212] [2022-07-12 14:39:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:39:11,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:39:11,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:39:11,791 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:39:11,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-12 14:39:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:39:13,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2394 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 14:39:13,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:39:13,841 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-12 14:39:13,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:39:13,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:39:13,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719428212] [2022-07-12 14:39:13,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719428212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:39:13,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:39:13,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 14:39:13,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634140799] [2022-07-12 14:39:13,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:39:13,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 14:39:13,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:39:13,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 14:39:13,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 14:39:13,843 INFO L87 Difference]: Start difference. First operand 23609 states and 34149 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-12 14:39:16,028 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 [] [2022-07-12 14:39:16,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:39:16,897 INFO L93 Difference]: Finished difference Result 50865 states and 74356 transitions. [2022-07-12 14:39:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:39:16,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 261 [2022-07-12 14:39:16,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:39:17,007 INFO L225 Difference]: With dead ends: 50865 [2022-07-12 14:39:17,008 INFO L226 Difference]: Without dead ends: 27284 [2022-07-12 14:39:17,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:39:17,069 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 335 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 4480 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:39:17,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 4480 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 14:39:17,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27284 states. [2022-07-12 14:39:17,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27284 to 23609. [2022-07-12 14:39:17,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23609 states, 16702 states have (on average 1.319482696683032) internal successors, (22038), 17342 states have internal predecessors, (22038), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5044 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-12 14:39:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23609 states to 23609 states and 34139 transitions. [2022-07-12 14:39:17,745 INFO L78 Accepts]: Start accepts. Automaton has 23609 states and 34139 transitions. Word has length 261 [2022-07-12 14:39:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:39:17,746 INFO L495 AbstractCegarLoop]: Abstraction has 23609 states and 34139 transitions. [2022-07-12 14:39:17,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-12 14:39:17,746 INFO L276 IsEmpty]: Start isEmpty. Operand 23609 states and 34139 transitions. [2022-07-12 14:39:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-12 14:39:17,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:39:17,752 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:39:17,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-12 14:39:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:39:17,952 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:39:17,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:39:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash 513467784, now seen corresponding path program 1 times [2022-07-12 14:39:17,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:39:17,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598973690] [2022-07-12 14:39:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:39:17,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:39:17,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:39:17,960 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:39:17,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-12 14:39:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:39:20,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 14:39:20,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:39:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-12 14:39:20,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:39:20,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:39:20,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598973690] [2022-07-12 14:39:20,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598973690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:39:20,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:39:20,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 14:39:20,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073664976] [2022-07-12 14:39:20,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:39:20,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 14:39:20,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:39:20,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 14:39:20,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 14:39:20,169 INFO L87 Difference]: Start difference. First operand 23609 states and 34139 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 14:39:21,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:39:21,766 INFO L93 Difference]: Finished difference Result 54800 states and 80837 transitions. [2022-07-12 14:39:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:39:21,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 260 [2022-07-12 14:39:21,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:39:21,880 INFO L225 Difference]: With dead ends: 54800 [2022-07-12 14:39:21,880 INFO L226 Difference]: Without dead ends: 31219 [2022-07-12 14:39:21,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 14:39:21,944 INFO L413 NwaCegarLoop]: 1885 mSDtfsCounter, 1245 mSDsluCounter, 8598 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 10483 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 14:39:21,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 10483 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 14:39:21,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31219 states. [2022-07-12 14:39:22,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31219 to 23649. [2022-07-12 14:39:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23649 states, 16742 states have (on average 1.318719388364592) internal successors, (22078), 17372 states have internal predecessors, (22078), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5054 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-12 14:39:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23649 states to 23649 states and 34179 transitions. [2022-07-12 14:39:22,993 INFO L78 Accepts]: Start accepts. Automaton has 23649 states and 34179 transitions. Word has length 260 [2022-07-12 14:39:22,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:39:22,994 INFO L495 AbstractCegarLoop]: Abstraction has 23649 states and 34179 transitions. [2022-07-12 14:39:22,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 14:39:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 23649 states and 34179 transitions. [2022-07-12 14:39:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-12 14:39:23,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:39:23,000 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 14:39:23,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-07-12 14:39:23,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:39:23,201 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:39:23,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:39:23,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1568997441, now seen corresponding path program 1 times [2022-07-12 14:39:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:39:23,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794003495] [2022-07-12 14:39:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:39:23,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:39:23,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:39:23,204 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:39:23,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-12 14:39:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:39:25,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:39:25,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:39:25,455 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 [2022-07-12 14:39:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-12 14:39:25,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:39:25,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:39:25,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794003495] [2022-07-12 14:39:25,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794003495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:39:25,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:39:25,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:39:25,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38505526] [2022-07-12 14:39:25,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:39:25,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:39:25,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:39:25,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:39:25,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:39:25,586 INFO L87 Difference]: Start difference. First operand 23649 states and 34179 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 14:39:26,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:39:26,209 INFO L93 Difference]: Finished difference Result 47270 states and 68325 transitions. [2022-07-12 14:39:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:39:26,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 267 [2022-07-12 14:39:26,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:39:26,304 INFO L225 Difference]: With dead ends: 47270 [2022-07-12 14:39:26,305 INFO L226 Difference]: Without dead ends: 23649 [2022-07-12 14:39:26,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:39:26,375 INFO L413 NwaCegarLoop]: 1455 mSDtfsCounter, 0 mSDsluCounter, 4175 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:39:26,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5630 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 191 Unchecked, 0.0s Time] [2022-07-12 14:39:26,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23649 states. [2022-07-12 14:39:27,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23649 to 23649. [2022-07-12 14:39:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23649 states, 16742 states have (on average 1.3181220881615099) internal successors, (22068), 17372 states have internal predecessors, (22068), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1604 states have return successors, (6799), 5054 states have call predecessors, (6799), 5301 states have call successors, (6799) [2022-07-12 14:39:27,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23649 states to 23649 states and 34169 transitions. [2022-07-12 14:39:27,309 INFO L78 Accepts]: Start accepts. Automaton has 23649 states and 34169 transitions. Word has length 267 [2022-07-12 14:39:27,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:39:27,309 INFO L495 AbstractCegarLoop]: Abstraction has 23649 states and 34169 transitions. [2022-07-12 14:39:27,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 14:39:27,310 INFO L276 IsEmpty]: Start isEmpty. Operand 23649 states and 34169 transitions. [2022-07-12 14:39:27,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-12 14:39:27,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:39:27,316 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:39:27,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-12 14:39:27,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:39:27,517 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:39:27,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:39:27,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1292337354, now seen corresponding path program 1 times [2022-07-12 14:39:27,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:39:27,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486558244] [2022-07-12 14:39:27,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:39:27,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:39:27,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:39:27,520 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:39:27,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-12 14:39:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:39:29,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 14:39:29,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:39:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-12 14:39:29,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:39:29,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:39:29,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486558244] [2022-07-12 14:39:29,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486558244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:39:29,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:39:29,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:39:29,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242932346] [2022-07-12 14:39:29,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:39:29,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:39:29,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:39:29,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:39:29,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:39:29,845 INFO L87 Difference]: Start difference. First operand 23649 states and 34169 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 14:39:31,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:39:31,028 INFO L93 Difference]: Finished difference Result 51890 states and 75916 transitions. [2022-07-12 14:39:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:39:31,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 273 [2022-07-12 14:39:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:39:31,146 INFO L225 Difference]: With dead ends: 51890 [2022-07-12 14:39:31,146 INFO L226 Difference]: Without dead ends: 28269 [2022-07-12 14:39:31,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 14:39:31,236 INFO L413 NwaCegarLoop]: 1859 mSDtfsCounter, 645 mSDsluCounter, 6716 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 8575 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 14:39:31,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 8575 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 14:39:31,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28269 states. [2022-07-12 14:39:32,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28269 to 23699. [2022-07-12 14:39:32,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23699 states, 16782 states have (on average 1.3173638422118936) internal successors, (22108), 17412 states have internal predecessors, (22108), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1614 states have return successors, (6869), 5064 states have call predecessors, (6869), 5301 states have call successors, (6869) [2022-07-12 14:39:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23699 states to 23699 states and 34279 transitions. [2022-07-12 14:39:32,261 INFO L78 Accepts]: Start accepts. Automaton has 23699 states and 34279 transitions. Word has length 273 [2022-07-12 14:39:32,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:39:32,262 INFO L495 AbstractCegarLoop]: Abstraction has 23699 states and 34279 transitions. [2022-07-12 14:39:32,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 14:39:32,262 INFO L276 IsEmpty]: Start isEmpty. Operand 23699 states and 34279 transitions. [2022-07-12 14:39:32,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-12 14:39:32,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:39:32,268 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 14:39:32,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-12 14:39:32,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:39:32,469 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:39:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:39:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1575192269, now seen corresponding path program 1 times [2022-07-12 14:39:32,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:39:32,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838443651] [2022-07-12 14:39:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:39:32,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:39:32,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:39:32,472 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:39:32,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-12 14:39:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:39:34,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 2538 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 14:39:34,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:39:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-12 14:39:34,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:39:34,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:39:34,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838443651] [2022-07-12 14:39:34,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838443651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:39:34,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:39:34,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 14:39:34,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541566980] [2022-07-12 14:39:34,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:39:34,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 14:39:34,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:39:34,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 14:39:34,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 14:39:34,516 INFO L87 Difference]: Start difference. First operand 23699 states and 34279 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-12 14:39:35,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:39:35,844 INFO L93 Difference]: Finished difference Result 56429 states and 81447 transitions. [2022-07-12 14:39:35,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:39:35,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 278 [2022-07-12 14:39:35,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:39:35,984 INFO L225 Difference]: With dead ends: 56429 [2022-07-12 14:39:35,984 INFO L226 Difference]: Without dead ends: 32758 [2022-07-12 14:39:36,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:39:36,072 INFO L413 NwaCegarLoop]: 2730 mSDtfsCounter, 1479 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 6703 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 14:39:36,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 6703 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 14:39:36,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32758 states. [2022-07-12 14:39:36,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32758 to 23719. [2022-07-12 14:39:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23719 states, 16802 states have (on average 1.3169860730865373) internal successors, (22128), 17432 states have internal predecessors, (22128), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1614 states have return successors, (6869), 5064 states have call predecessors, (6869), 5301 states have call successors, (6869) [2022-07-12 14:39:37,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23719 states to 23719 states and 34299 transitions. [2022-07-12 14:39:37,023 INFO L78 Accepts]: Start accepts. Automaton has 23719 states and 34299 transitions. Word has length 278 [2022-07-12 14:39:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:39:37,023 INFO L495 AbstractCegarLoop]: Abstraction has 23719 states and 34299 transitions. [2022-07-12 14:39:37,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-12 14:39:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand 23719 states and 34299 transitions. [2022-07-12 14:39:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-12 14:39:37,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:39:37,030 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 14:39:37,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-07-12 14:39:37,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:39:37,235 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:39:37,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:39:37,236 INFO L85 PathProgramCache]: Analyzing trace with hash -916711623, now seen corresponding path program 1 times [2022-07-12 14:39:37,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:39:37,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456724520] [2022-07-12 14:39:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:39:37,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:39:37,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:39:37,239 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:39:37,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-12 14:39:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:39:39,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 2489 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-12 14:39:39,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:39:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-12 14:39:40,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:39:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-12 14:39:41,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:39:41,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456724520] [2022-07-12 14:39:41,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456724520] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:39:41,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:39:41,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2022-07-12 14:39:41,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887157125] [2022-07-12 14:39:41,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:39:41,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 14:39:41,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:39:41,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 14:39:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-07-12 14:39:41,116 INFO L87 Difference]: Start difference. First operand 23719 states and 34299 transitions. Second operand has 20 states, 19 states have (on average 9.157894736842104) internal successors, (174), 16 states have internal predecessors, (174), 5 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) [2022-07-12 14:39:43,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 14:39:46,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 14:39:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:39:48,073 INFO L93 Difference]: Finished difference Result 51130 states and 74726 transitions. [2022-07-12 14:39:48,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 14:39:48,074 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 9.157894736842104) internal successors, (174), 16 states have internal predecessors, (174), 5 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) Word has length 278 [2022-07-12 14:39:48,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:39:48,201 INFO L225 Difference]: With dead ends: 51130 [2022-07-12 14:39:48,201 INFO L226 Difference]: Without dead ends: 27439 [2022-07-12 14:39:48,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-07-12 14:39:48,287 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 253 mSDsluCounter, 22192 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 23929 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-12 14:39:48,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 23929 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 268 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2022-07-12 14:39:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27439 states. [2022-07-12 14:39:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27439 to 23719. [2022-07-12 14:39:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23719 states, 16802 states have (on average 1.3163909058445422) internal successors, (22118), 17432 states have internal predecessors, (22118), 5302 states have call successors, (5302), 1618 states have call predecessors, (5302), 1614 states have return successors, (6869), 5059 states have call predecessors, (6869), 5301 states have call successors, (6869) [2022-07-12 14:39:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23719 states to 23719 states and 34289 transitions. [2022-07-12 14:39:49,372 INFO L78 Accepts]: Start accepts. Automaton has 23719 states and 34289 transitions. Word has length 278 [2022-07-12 14:39:49,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:39:49,373 INFO L495 AbstractCegarLoop]: Abstraction has 23719 states and 34289 transitions. [2022-07-12 14:39:49,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 9.157894736842104) internal successors, (174), 16 states have internal predecessors, (174), 5 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) [2022-07-12 14:39:49,373 INFO L276 IsEmpty]: Start isEmpty. Operand 23719 states and 34289 transitions. [2022-07-12 14:39:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-07-12 14:39:49,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:39:49,380 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:39:49,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-12 14:39:49,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:39:49,600 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:39:49,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:39:49,600 INFO L85 PathProgramCache]: Analyzing trace with hash 899872474, now seen corresponding path program 1 times [2022-07-12 14:39:49,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:39:49,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086577583] [2022-07-12 14:39:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:39:49,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:39:49,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:39:49,604 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:39:49,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-12 14:39:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:39:52,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 2769 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:39:52,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:39:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-12 14:39:52,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:39:52,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:39:52,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086577583] [2022-07-12 14:39:52,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086577583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:39:52,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:39:52,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:39:52,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109107830] [2022-07-12 14:39:52,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:39:52,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:39:52,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:39:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:39:52,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:39:52,766 INFO L87 Difference]: Start difference. First operand 23719 states and 34289 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-12 14:39:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:39:54,956 INFO L93 Difference]: Finished difference Result 57824 states and 83600 transitions. [2022-07-12 14:39:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:39:54,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 348 [2022-07-12 14:39:54,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:39:55,092 INFO L225 Difference]: With dead ends: 57824 [2022-07-12 14:39:55,092 INFO L226 Difference]: Without dead ends: 34133 [2022-07-12 14:39:55,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:39:55,171 INFO L413 NwaCegarLoop]: 2985 mSDtfsCounter, 1711 mSDsluCounter, 6902 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 9887 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 14:39:55,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 9887 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 14:39:55,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34133 states. [2022-07-12 14:39:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34133 to 23779. [2022-07-12 14:39:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23779 states, 16842 states have (on average 1.3162332264576653) internal successors, (22168), 17482 states have internal predecessors, (22168), 5322 states have call successors, (5322), 1618 states have call predecessors, (5322), 1614 states have return successors, (6889), 5079 states have call predecessors, (6889), 5321 states have call successors, (6889) [2022-07-12 14:39:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23779 states to 23779 states and 34379 transitions. [2022-07-12 14:39:56,089 INFO L78 Accepts]: Start accepts. Automaton has 23779 states and 34379 transitions. Word has length 348 [2022-07-12 14:39:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:39:56,089 INFO L495 AbstractCegarLoop]: Abstraction has 23779 states and 34379 transitions. [2022-07-12 14:39:56,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-12 14:39:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 23779 states and 34379 transitions. [2022-07-12 14:39:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-07-12 14:39:56,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:39:56,096 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:39:56,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-12 14:39:56,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:39:56,312 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:39:56,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:39:56,312 INFO L85 PathProgramCache]: Analyzing trace with hash -978138414, now seen corresponding path program 1 times [2022-07-12 14:39:56,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:39:56,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030157733] [2022-07-12 14:39:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:39:56,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:39:56,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:39:56,315 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:39:56,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-12 14:39:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:39:59,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 3557 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 14:39:59,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:39:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-07-12 14:39:59,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:39:59,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:39:59,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030157733] [2022-07-12 14:39:59,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030157733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:39:59,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:39:59,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 14:39:59,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831091110] [2022-07-12 14:39:59,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:39:59,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 14:39:59,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:39:59,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 14:39:59,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:39:59,532 INFO L87 Difference]: Start difference. First operand 23779 states and 34379 transitions. Second operand has 8 states, 8 states have (on average 25.25) internal successors, (202), 7 states have internal predecessors, (202), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-12 14:40:01,932 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 [] [2022-07-12 14:40:03,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:40:03,071 INFO L93 Difference]: Finished difference Result 49980 states and 72771 transitions. [2022-07-12 14:40:03,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 14:40:03,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 7 states have internal predecessors, (202), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 408 [2022-07-12 14:40:03,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:40:03,157 INFO L225 Difference]: With dead ends: 49980 [2022-07-12 14:40:03,157 INFO L226 Difference]: Without dead ends: 26229 [2022-07-12 14:40:03,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-12 14:40:03,220 INFO L413 NwaCegarLoop]: 2067 mSDtfsCounter, 1027 mSDsluCounter, 10899 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 194 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 12966 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 14:40:03,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 12966 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 14:40:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26229 states. [2022-07-12 14:40:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26229 to 23229. [2022-07-12 14:40:04,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23229 states, 16477 states have (on average 1.3180797475268555) internal successors, (21718), 17097 states have internal predecessors, (21718), 5182 states have call successors, (5182), 1573 states have call predecessors, (5182), 1569 states have return successors, (6739), 4939 states have call predecessors, (6739), 5181 states have call successors, (6739) [2022-07-12 14:40:04,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23229 states to 23229 states and 33639 transitions. [2022-07-12 14:40:04,129 INFO L78 Accepts]: Start accepts. Automaton has 23229 states and 33639 transitions. Word has length 408 [2022-07-12 14:40:04,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:40:04,129 INFO L495 AbstractCegarLoop]: Abstraction has 23229 states and 33639 transitions. [2022-07-12 14:40:04,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 7 states have internal predecessors, (202), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-12 14:40:04,129 INFO L276 IsEmpty]: Start isEmpty. Operand 23229 states and 33639 transitions. [2022-07-12 14:40:04,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-07-12 14:40:04,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:40:04,136 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, 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, 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] [2022-07-12 14:40:04,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-12 14:40:04,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:40:04,340 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:40:04,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:40:04,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1333573048, now seen corresponding path program 1 times [2022-07-12 14:40:04,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:40:04,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13086417] [2022-07-12 14:40:04,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:40:04,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:40:04,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:40:04,343 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:40:04,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-12 14:40:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:40:07,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 3497 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 14:40:07,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:40:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 163 proven. 10 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-07-12 14:40:07,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:40:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 34 proven. 84 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-07-12 14:40:08,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:40:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13086417] [2022-07-12 14:40:08,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13086417] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:40:08,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:40:08,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-12 14:40:08,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965007072] [2022-07-12 14:40:08,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:40:08,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 14:40:08,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:40:08,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 14:40:08,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-12 14:40:08,699 INFO L87 Difference]: Start difference. First operand 23229 states and 33639 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, (61), 2 states have call predecessors, (61), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-07-12 14:40:11,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:40:11,123 INFO L93 Difference]: Finished difference Result 46555 states and 67446 transitions. [2022-07-12 14:40:11,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 14:40:11,124 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, (61), 2 states have call predecessors, (61), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 405 [2022-07-12 14:40:11,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:40:11,203 INFO L225 Difference]: With dead ends: 46555 [2022-07-12 14:40:11,203 INFO L226 Difference]: Without dead ends: 23324 [2022-07-12 14:40:11,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=197, Invalid=355, Unknown=0, NotChecked=0, Total=552 [2022-07-12 14:40:11,259 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 29 mSDsluCounter, 7239 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 8689 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 14:40:11,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 8689 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 14:40:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23324 states. [2022-07-12 14:40:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23324 to 23314. [2022-07-12 14:40:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23314 states, 16557 states have (on average 1.318354774415655) internal successors, (21828), 17177 states have internal predecessors, (21828), 5182 states have call successors, (5182), 1578 states have call predecessors, (5182), 1574 states have return successors, (6739), 4939 states have call predecessors, (6739), 5181 states have call successors, (6739) [2022-07-12 14:40:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23314 states to 23314 states and 33749 transitions. [2022-07-12 14:40:12,040 INFO L78 Accepts]: Start accepts. Automaton has 23314 states and 33749 transitions. Word has length 405 [2022-07-12 14:40:12,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:40:12,041 INFO L495 AbstractCegarLoop]: Abstraction has 23314 states and 33749 transitions. [2022-07-12 14:40:12,041 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, (61), 2 states have call predecessors, (61), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-07-12 14:40:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 23314 states and 33749 transitions. [2022-07-12 14:40:12,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-07-12 14:40:12,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:40:12,049 INFO L195 NwaCegarLoop]: trace histogram [39, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:40:12,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-12 14:40:12,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:40:12,268 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:40:12,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:40:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2099534477, now seen corresponding path program 1 times [2022-07-12 14:40:12,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:40:12,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275857037] [2022-07-12 14:40:12,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:40:12,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:40:12,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:40:12,272 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:40:12,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-12 14:40:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:40:15,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 3719 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 14:40:15,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:40:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 547 proven. 55 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2022-07-12 14:40:16,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:40:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 64 proven. 389 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2022-07-12 14:40:18,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:40:18,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275857037] [2022-07-12 14:40:18,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275857037] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:40:18,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:40:18,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-12 14:40:18,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50564425] [2022-07-12 14:40:18,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:40:18,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 14:40:18,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:40:18,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 14:40:18,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-12 14:40:18,730 INFO L87 Difference]: Start difference. First operand 23314 states and 33749 transitions. Second operand has 26 states, 26 states have (on average 9.192307692307692) internal successors, (239), 26 states have internal predecessors, (239), 2 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-07-12 14:40:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:40:26,809 INFO L93 Difference]: Finished difference Result 46984 states and 68032 transitions. [2022-07-12 14:40:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-12 14:40:26,810 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.192307692307692) internal successors, (239), 26 states have internal predecessors, (239), 2 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 423 [2022-07-12 14:40:26,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:40:26,919 INFO L225 Difference]: With dead ends: 46984 [2022-07-12 14:40:26,920 INFO L226 Difference]: Without dead ends: 23498 [2022-07-12 14:40:27,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 820 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-07-12 14:40:27,005 INFO L413 NwaCegarLoop]: 1456 mSDtfsCounter, 191 mSDsluCounter, 17426 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 18882 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 14:40:27,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 18882 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 14:40:27,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23498 states. [2022-07-12 14:40:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23498 to 23464. [2022-07-12 14:40:28,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23464 states, 16707 states have (on average 1.314000119710301) internal successors, (21953), 17327 states have internal predecessors, (21953), 5182 states have call successors, (5182), 1578 states have call predecessors, (5182), 1574 states have return successors, (6739), 4939 states have call predecessors, (6739), 5181 states have call successors, (6739) [2022-07-12 14:40:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23464 states to 23464 states and 33874 transitions. [2022-07-12 14:40:28,101 INFO L78 Accepts]: Start accepts. Automaton has 23464 states and 33874 transitions. Word has length 423 [2022-07-12 14:40:28,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:40:28,102 INFO L495 AbstractCegarLoop]: Abstraction has 23464 states and 33874 transitions. [2022-07-12 14:40:28,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.192307692307692) internal successors, (239), 26 states have internal predecessors, (239), 2 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-07-12 14:40:28,102 INFO L276 IsEmpty]: Start isEmpty. Operand 23464 states and 33874 transitions. [2022-07-12 14:40:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-07-12 14:40:28,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:40:28,109 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, 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, 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] [2022-07-12 14:40:28,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-12 14:40:28,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:40:28,310 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:40:28,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:40:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash 581351656, now seen corresponding path program 2 times [2022-07-12 14:40:28,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:40:28,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522765285] [2022-07-12 14:40:28,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:40:28,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:40:28,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:40:28,314 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:40:28,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-12 14:40:29,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:40:29,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:40:29,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 14:40:29,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:40:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2962 trivial. 0 not checked. [2022-07-12 14:40:30,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:40:30,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:40:30,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522765285] [2022-07-12 14:40:30,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522765285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:40:30,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:40:30,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 14:40:30,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951706738] [2022-07-12 14:40:30,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:40:30,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 14:40:30,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:40:30,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 14:40:30,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 14:40:30,400 INFO L87 Difference]: Start difference. First operand 23464 states and 33874 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 8 states have internal predecessors, (182), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (36), 5 states have call predecessors, (36), 3 states have call successors, (36) [2022-07-12 14:40:35,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:40:35,329 INFO L93 Difference]: Finished difference Result 57069 states and 82385 transitions. [2022-07-12 14:40:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 14:40:35,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 8 states have internal predecessors, (182), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (36), 5 states have call predecessors, (36), 3 states have call successors, (36) Word has length 459 [2022-07-12 14:40:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:40:35,461 INFO L225 Difference]: With dead ends: 57069 [2022-07-12 14:40:35,461 INFO L226 Difference]: Without dead ends: 33633 [2022-07-12 14:40:35,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-07-12 14:40:35,542 INFO L413 NwaCegarLoop]: 2810 mSDtfsCounter, 1977 mSDsluCounter, 20718 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 23528 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:40:35,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 23528 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 14:40:35,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33633 states. [2022-07-12 14:40:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33633 to 23559. [2022-07-12 14:40:36,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23559 states, 16777 states have (on average 1.3129880193121535) internal successors, (22028), 17397 states have internal predecessors, (22028), 5192 states have call successors, (5192), 1578 states have call predecessors, (5192), 1589 states have return successors, (6764), 4969 states have call predecessors, (6764), 5191 states have call successors, (6764) [2022-07-12 14:40:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23559 states to 23559 states and 33984 transitions. [2022-07-12 14:40:36,662 INFO L78 Accepts]: Start accepts. Automaton has 23559 states and 33984 transitions. Word has length 459 [2022-07-12 14:40:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:40:36,662 INFO L495 AbstractCegarLoop]: Abstraction has 23559 states and 33984 transitions. [2022-07-12 14:40:36,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 8 states have internal predecessors, (182), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (36), 5 states have call predecessors, (36), 3 states have call successors, (36) [2022-07-12 14:40:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 23559 states and 33984 transitions. [2022-07-12 14:40:36,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-07-12 14:40:36,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:40:36,670 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, 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, 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] [2022-07-12 14:40:36,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-12 14:40:36,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:40:36,876 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:40:36,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:40:36,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1104828182, now seen corresponding path program 1 times [2022-07-12 14:40:36,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:40:36,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336708718] [2022-07-12 14:40:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:40:36,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:40:36,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:40:36,880 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:40:36,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-12 14:40:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:40:41,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 4089 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-12 14:40:41,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:40:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 1441 proven. 253 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2022-07-12 14:40:43,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:40:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 124 proven. 1335 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-07-12 14:40:50,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:40:50,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336708718] [2022-07-12 14:40:50,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336708718] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:40:50,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:40:50,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-12 14:40:50,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229683387] [2022-07-12 14:40:50,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:40:50,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-12 14:40:50,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:40:50,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-12 14:40:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-07-12 14:40:50,631 INFO L87 Difference]: Start difference. First operand 23559 states and 33984 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, (61), 2 states have call predecessors, (61), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-07-12 14:41:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:41:30,216 INFO L93 Difference]: Finished difference Result 47852 states and 69054 transitions. [2022-07-12 14:41:30,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-07-12 14:41:30,218 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, (61), 2 states have call predecessors, (61), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 459 [2022-07-12 14:41:30,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:41:30,305 INFO L225 Difference]: With dead ends: 47852 [2022-07-12 14:41:30,305 INFO L226 Difference]: Without dead ends: 23941 [2022-07-12 14:41:30,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 868 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1926 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=3869, Invalid=9013, Unknown=0, NotChecked=0, Total=12882 [2022-07-12 14:41:30,378 INFO L413 NwaCegarLoop]: 1468 mSDtfsCounter, 637 mSDsluCounter, 33680 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 35148 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:41:30,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 35148 Invalid, 2825 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [364 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-07-12 14:41:30,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23941 states. [2022-07-12 14:41:31,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23941 to 23859. [2022-07-12 14:41:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23859 states, 17077 states have (on average 1.3074896059026762) internal successors, (22328), 17697 states have internal predecessors, (22328), 5192 states have call successors, (5192), 1578 states have call predecessors, (5192), 1589 states have return successors, (6764), 4969 states have call predecessors, (6764), 5191 states have call successors, (6764) [2022-07-12 14:41:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23859 states to 23859 states and 34284 transitions. [2022-07-12 14:41:31,422 INFO L78 Accepts]: Start accepts. Automaton has 23859 states and 34284 transitions. Word has length 459 [2022-07-12 14:41:31,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:41:31,422 INFO L495 AbstractCegarLoop]: Abstraction has 23859 states and 34284 transitions. [2022-07-12 14:41:31,422 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, (61), 2 states have call predecessors, (61), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-07-12 14:41:31,423 INFO L276 IsEmpty]: Start isEmpty. Operand 23859 states and 34284 transitions. [2022-07-12 14:41:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2022-07-12 14:41:31,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:41:31,428 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, 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, 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] [2022-07-12 14:41:31,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-07-12 14:41:31,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:41:31,629 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:41:31,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:41:31,630 INFO L85 PathProgramCache]: Analyzing trace with hash 881863786, now seen corresponding path program 2 times [2022-07-12 14:41:31,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:41:31,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675282512] [2022-07-12 14:41:31,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:41:31,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:41:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:41:31,634 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:41:31,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-12 14:41:33,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:41:33,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:41:33,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:41:33,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:41:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10855 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10848 trivial. 0 not checked. [2022-07-12 14:41:33,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:41:33,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:41:33,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675282512] [2022-07-12 14:41:33,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675282512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:41:33,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:41:33,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:41:33,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972509304] [2022-07-12 14:41:33,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:41:33,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:41:33,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:41:33,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:41:33,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:41:33,622 INFO L87 Difference]: Start difference. First operand 23859 states and 34284 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 3 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-07-12 14:41:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:41:34,733 INFO L93 Difference]: Finished difference Result 48958 states and 70544 transitions. [2022-07-12 14:41:34,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:41:34,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 3 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 531 [2022-07-12 14:41:34,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:41:34,826 INFO L225 Difference]: With dead ends: 48958 [2022-07-12 14:41:34,826 INFO L226 Difference]: Without dead ends: 25127 [2022-07-12 14:41:34,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:41:34,897 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 257 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:41:34,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 2934 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:41:34,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25127 states. [2022-07-12 14:41:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25127 to 23859. [2022-07-12 14:41:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23859 states, 17077 states have (on average 1.3069040229548516) internal successors, (22318), 17692 states have internal predecessors, (22318), 5192 states have call successors, (5192), 1578 states have call predecessors, (5192), 1589 states have return successors, (6764), 4969 states have call predecessors, (6764), 5191 states have call successors, (6764) [2022-07-12 14:41:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23859 states to 23859 states and 34274 transitions. [2022-07-12 14:41:35,973 INFO L78 Accepts]: Start accepts. Automaton has 23859 states and 34274 transitions. Word has length 531 [2022-07-12 14:41:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:41:35,976 INFO L495 AbstractCegarLoop]: Abstraction has 23859 states and 34274 transitions. [2022-07-12 14:41:35,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 3 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-07-12 14:41:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 23859 states and 34274 transitions. [2022-07-12 14:41:35,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2022-07-12 14:41:35,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:41:35,982 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:41:36,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-07-12 14:41:36,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:41:36,183 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:41:36,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:41:36,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2110026931, now seen corresponding path program 1 times [2022-07-12 14:41:36,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:41:36,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922066929] [2022-07-12 14:41:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:41:36,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:41:36,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:41:36,187 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:41:36,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-12 14:41:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:41:41,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 4889 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-12 14:41:41,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:41:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10855 backedges. 5161 proven. 1081 refuted. 0 times theorem prover too weak. 4613 trivial. 0 not checked. [2022-07-12 14:41:49,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:42:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 10855 backedges. 244 proven. 5523 refuted. 0 times theorem prover too weak. 5088 trivial. 0 not checked. [2022-07-12 14:42:19,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:42:19,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922066929] [2022-07-12 14:42:19,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922066929] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:42:19,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:42:19,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2022-07-12 14:42:19,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670966024] [2022-07-12 14:42:19,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:42:19,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-07-12 14:42:19,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:42:19,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-07-12 14:42:19,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2022-07-12 14:42:19,080 INFO L87 Difference]: Start difference. First operand 23859 states and 34274 transitions. Second operand has 98 states, 98 states have (on average 3.2551020408163267) internal successors, (319), 98 states have internal predecessors, (319), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60)