./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 01:31:29,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 01:31:29,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 01:31:30,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 01:31:30,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 01:31:30,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 01:31:30,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 01:31:30,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 01:31:30,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 01:31:30,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 01:31:30,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 01:31:30,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 01:31:30,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 01:31:30,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 01:31:30,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 01:31:30,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 01:31:30,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 01:31:30,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 01:31:30,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 01:31:30,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 01:31:30,043 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 01:31:30,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 01:31:30,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 01:31:30,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 01:31:30,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 01:31:30,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 01:31:30,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 01:31:30,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 01:31:30,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 01:31:30,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 01:31:30,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 01:31:30,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 01:31:30,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 01:31:30,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 01:31:30,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 01:31:30,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 01:31:30,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 01:31:30,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 01:31:30,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 01:31:30,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 01:31:30,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 01:31:30,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 01:31:30,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 01:31:30,095 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 01:31:30,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 01:31:30,096 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 01:31:30,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 01:31:30,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 01:31:30,097 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 01:31:30,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 01:31:30,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 01:31:30,098 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 01:31:30,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 01:31:30,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 01:31:30,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 01:31:30,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 01:31:30,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 01:31:30,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 01:31:30,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 01:31:30,101 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 01:31:30,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 01:31:30,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 01:31:30,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 01:31:30,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 01:31:30,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 01:31:30,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 01:31:30,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 01:31:30,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 01:31:30,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 01:31:30,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 01:31:30,103 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 01:31:30,103 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 01:31:30,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 01:31:30,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab [2022-07-14 01:31:30,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 01:31:30,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 01:31:30,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 01:31:30,316 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 01:31:30,316 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 01:31:30,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-14 01:31:30,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0fa7b0a/2085065de32e4ff38484a5f500b07b9f/FLAG1b9655635 [2022-07-14 01:31:31,164 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 01:31:31,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-14 01:31:31,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0fa7b0a/2085065de32e4ff38484a5f500b07b9f/FLAG1b9655635 [2022-07-14 01:31:31,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0fa7b0a/2085065de32e4ff38484a5f500b07b9f [2022-07-14 01:31:31,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 01:31:31,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 01:31:31,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 01:31:31,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 01:31:31,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 01:31:31,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:31:31" (1/1) ... [2022-07-14 01:31:31,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef66456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:31, skipping insertion in model container [2022-07-14 01:31:31,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:31:31" (1/1) ... [2022-07-14 01:31:31,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 01:31:31,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 01:31:32,716 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-14 01:31:32,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 01:31:32,908 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 01:31:33,142 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-14 01:31:33,149 INFO L158 Benchmark]: Toolchain (without parser) took 1754.19ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 104.1MB in the beginning and 103.9MB in the end (delta: 204.3kB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2022-07-14 01:31:33,149 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 136.3MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 01:31:33,152 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1751.28ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 103.6MB in the beginning and 103.9MB in the end (delta: -365.8kB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2022-07-14 01:31:33,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 136.3MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1751.28ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 103.6MB in the beginning and 103.9MB in the end (delta: -365.8kB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 01:31:34,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 01:31:34,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 01:31:34,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 01:31:34,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 01:31:34,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 01:31:34,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 01:31:34,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 01:31:34,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 01:31:34,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 01:31:34,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 01:31:34,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 01:31:34,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 01:31:34,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 01:31:34,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 01:31:34,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 01:31:34,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 01:31:34,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 01:31:34,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 01:31:34,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 01:31:34,998 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 01:31:34,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 01:31:35,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 01:31:35,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 01:31:35,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 01:31:35,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 01:31:35,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 01:31:35,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 01:31:35,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 01:31:35,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 01:31:35,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 01:31:35,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 01:31:35,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 01:31:35,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 01:31:35,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 01:31:35,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 01:31:35,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 01:31:35,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 01:31:35,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 01:31:35,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 01:31:35,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 01:31:35,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 01:31:35,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-14 01:31:35,059 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 01:31:35,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 01:31:35,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 01:31:35,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 01:31:35,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 01:31:35,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 01:31:35,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 01:31:35,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 01:31:35,062 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 01:31:35,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 01:31:35,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 01:31:35,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 01:31:35,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 01:31:35,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 01:31:35,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 01:31:35,064 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 01:31:35,064 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 01:31:35,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 01:31:35,065 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 01:31:35,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 01:31:35,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 01:31:35,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 01:31:35,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 01:31:35,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 01:31:35,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 01:31:35,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 01:31:35,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 01:31:35,067 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 01:31:35,067 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 01:31:35,067 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 01:31:35,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 01:31:35,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 01:31:35,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 01:31:35,068 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab [2022-07-14 01:31:35,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 01:31:35,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 01:31:35,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 01:31:35,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 01:31:35,414 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 01:31:35,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-14 01:31:35,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7a31f833/cc7aefcfdf1d464abf16879167777a3c/FLAG6b2081bf0 [2022-07-14 01:31:36,224 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 01:31:36,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-14 01:31:36,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7a31f833/cc7aefcfdf1d464abf16879167777a3c/FLAG6b2081bf0 [2022-07-14 01:31:36,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7a31f833/cc7aefcfdf1d464abf16879167777a3c [2022-07-14 01:31:36,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 01:31:36,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 01:31:36,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 01:31:36,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 01:31:36,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 01:31:36,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:31:36" (1/1) ... [2022-07-14 01:31:36,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15eaec9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:36, skipping insertion in model container [2022-07-14 01:31:36,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:31:36" (1/1) ... [2022-07-14 01:31:36,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 01:31:36,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 01:31:37,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-14 01:31:38,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 01:31:38,098 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 01:31:38,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 01:31:38,450 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-14 01:31:38,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 01:31:38,517 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 01:31:38,780 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-14 01:31:38,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 01:31:38,939 INFO L208 MainTranslator]: Completed translation [2022-07-14 01:31:38,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:38 WrapperNode [2022-07-14 01:31:38,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 01:31:38,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 01:31:38,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 01:31:38,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 01:31:38,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:38" (1/1) ... [2022-07-14 01:31:39,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:38" (1/1) ... [2022-07-14 01:31:39,208 INFO L137 Inliner]: procedures = 232, calls = 1688, calls flagged for inlining = 75, calls inlined = 52, statements flattened = 3434 [2022-07-14 01:31:39,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 01:31:39,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 01:31:39,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 01:31:39,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 01:31:39,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:38" (1/1) ... [2022-07-14 01:31:39,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:38" (1/1) ... [2022-07-14 01:31:39,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:38" (1/1) ... [2022-07-14 01:31:39,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:38" (1/1) ... [2022-07-14 01:31:39,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:38" (1/1) ... [2022-07-14 01:31:39,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:38" (1/1) ... [2022-07-14 01:31:39,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:38" (1/1) ... [2022-07-14 01:31:39,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 01:31:39,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 01:31:39,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 01:31:39,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 01:31:39,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:38" (1/1) ... [2022-07-14 01:31:39,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 01:31:39,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:31:39,460 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) [2022-07-14 01:31:39,484 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 [2022-07-14 01:31:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-14 01:31:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-14 01:31:39,498 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-14 01:31:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-14 01:31:39,499 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-14 01:31:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-14 01:31:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-14 01:31:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 01:31:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-14 01:31:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 01:31:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 01:31:39,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 01:31:39,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-14 01:31:39,500 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-14 01:31:39,500 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2022-07-14 01:31:39,500 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2022-07-14 01:31:39,500 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2022-07-14 01:31:39,500 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2022-07-14 01:31:39,501 INFO L130 BoogieDeclarations]: Found specification of procedure p54_free_common [2022-07-14 01:31:39,501 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_free_common [2022-07-14 01:31:39,501 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_stop [2022-07-14 01:31:39,501 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_stop [2022-07-14 01:31:39,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 01:31:39,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 01:31:39,501 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-14 01:31:39,502 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-14 01:31:39,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 01:31:39,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 01:31:39,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 01:31:39,502 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 01:31:39,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 01:31:39,503 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 01:31:39,503 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-07-14 01:31:39,503 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-07-14 01:31:39,503 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-14 01:31:39,503 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-14 01:31:39,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 01:31:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-14 01:31:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 01:31:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure p54_find_type [2022-07-14 01:31:39,504 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_find_type [2022-07-14 01:31:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-14 01:31:39,505 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-14 01:31:39,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-14 01:31:39,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-14 01:31:39,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 01:31:39,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 01:31:39,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 01:31:39,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-14 01:31:39,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-14 01:31:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-14 01:31:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_open [2022-07-14 01:31:39,507 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_open [2022-07-14 01:31:39,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-14 01:31:39,508 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-14 01:31:39,508 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-14 01:31:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-14 01:31:39,509 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-14 01:31:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_post_reset [2022-07-14 01:31:39,509 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_post_reset [2022-07-14 01:31:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-14 01:31:39,509 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-14 01:31:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-14 01:31:39,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-14 01:31:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_disconnect [2022-07-14 01:31:39,510 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_disconnect [2022-07-14 01:31:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-14 01:31:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-14 01:31:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2022-07-14 01:31:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2022-07-14 01:31:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 01:31:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 01:31:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-14 01:31:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-14 01:31:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-14 01:31:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-14 01:31:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 01:31:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 01:31:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-07-14 01:31:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-07-14 01:31:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-14 01:31:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_pre_reset [2022-07-14 01:31:39,513 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_pre_reset [2022-07-14 01:31:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-14 01:31:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-14 01:31:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-14 01:31:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 01:31:39,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 01:31:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-14 01:31:39,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-14 01:31:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 01:31:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 01:31:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_read [2022-07-14 01:31:39,516 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_read [2022-07-14 01:31:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_write [2022-07-14 01:31:39,516 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_write [2022-07-14 01:31:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-14 01:31:39,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-14 01:31:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-14 01:31:39,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-14 01:31:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 01:31:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev_of_p54u_priv [2022-07-14 01:31:39,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev_of_p54u_priv [2022-07-14 01:31:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-14 01:31:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-14 01:31:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-14 01:31:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_resume [2022-07-14 01:31:39,518 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_resume [2022-07-14 01:31:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-14 01:31:39,518 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-14 01:31:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-14 01:31:39,519 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-14 01:31:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_free_urbs [2022-07-14 01:31:39,521 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_free_urbs [2022-07-14 01:31:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-07-14 01:31:39,522 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-07-14 01:31:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-14 01:31:39,523 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-14 01:31:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_bulk_msg [2022-07-14 01:31:39,523 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_bulk_msg [2022-07-14 01:31:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-14 01:31:39,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-14 01:31:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-14 01:31:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-14 01:31:39,529 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-14 01:31:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-07-14 01:31:39,529 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-07-14 01:31:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 01:31:39,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 01:31:40,047 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 01:31:40,051 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 01:31:40,568 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 01:32:48,566 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 01:32:48,577 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 01:32:48,578 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 01:32:48,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:32:48 BoogieIcfgContainer [2022-07-14 01:32:48,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 01:32:48,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 01:32:48,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 01:32:48,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 01:32:48,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 01:31:36" (1/3) ... [2022-07-14 01:32:48,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e4d2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:32:48, skipping insertion in model container [2022-07-14 01:32:48,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:31:38" (2/3) ... [2022-07-14 01:32:48,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e4d2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:32:48, skipping insertion in model container [2022-07-14 01:32:48,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:32:48" (3/3) ... [2022-07-14 01:32:48,587 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-14 01:32:48,598 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 01:32:48,599 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 01:32:48,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 01:32:48,653 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@38a29afc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f283662 [2022-07-14 01:32:48,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 01:32:48,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 729 states, 516 states have (on average 1.3468992248062015) internal successors, (695), 540 states have internal predecessors, (695), 163 states have call successors, (163), 49 states have call predecessors, (163), 48 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2022-07-14 01:32:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-14 01:32:48,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:32:48,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:32:48,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:32:48,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:32:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1349896211, now seen corresponding path program 1 times [2022-07-14 01:32:48,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:32:48,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512015558] [2022-07-14 01:32:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:32:48,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:32:48,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:32:48,698 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) [2022-07-14 01:32:48,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-14 01:32:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:32:50,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-14 01:32:50,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:32:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:32:50,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:32:50,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:32:50,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512015558] [2022-07-14 01:32:50,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512015558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:32:50,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:32:50,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 01:32:50,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017424872] [2022-07-14 01:32:50,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:32:50,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-14 01:32:50,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:32:50,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 01:32:50,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 01:32:50,612 INFO L87 Difference]: Start difference. First operand has 729 states, 516 states have (on average 1.3468992248062015) internal successors, (695), 540 states have internal predecessors, (695), 163 states have call successors, (163), 49 states have call predecessors, (163), 48 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 01:32:50,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:32:50,713 INFO L93 Difference]: Finished difference Result 1453 states and 2054 transitions. [2022-07-14 01:32:50,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 01:32:50,715 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-07-14 01:32:50,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:32:50,730 INFO L225 Difference]: With dead ends: 1453 [2022-07-14 01:32:50,730 INFO L226 Difference]: Without dead ends: 718 [2022-07-14 01:32:50,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 01:32:50,740 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 01:32:50,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 01:32:50,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-07-14 01:32:50,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2022-07-14 01:32:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 511 states have (on average 1.3346379647749511) internal successors, (682), 529 states have internal predecessors, (682), 159 states have call successors, (159), 48 states have call predecessors, (159), 47 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-14 01:32:50,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 994 transitions. [2022-07-14 01:32:50,819 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 994 transitions. Word has length 39 [2022-07-14 01:32:50,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:32:50,820 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 994 transitions. [2022-07-14 01:32:50,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 01:32:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 994 transitions. [2022-07-14 01:32:50,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-14 01:32:50,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:32:50,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:32:50,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-14 01:32:51,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:32:51,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:32:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:32:51,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1859369301, now seen corresponding path program 1 times [2022-07-14 01:32:51,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:32:51,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424320919] [2022-07-14 01:32:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:32:51,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:32:51,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:32:51,052 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) [2022-07-14 01:32:51,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-14 01:32:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:32:52,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 01:32:52,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:32:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:32:53,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:32:53,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:32:53,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424320919] [2022-07-14 01:32:53,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424320919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:32:53,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:32:53,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 01:32:53,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282406745] [2022-07-14 01:32:53,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:32:53,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 01:32:53,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:32:53,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 01:32:53,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:32:53,230 INFO L87 Difference]: Start difference. First operand 718 states and 994 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 01:32:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:32:53,598 INFO L93 Difference]: Finished difference Result 1433 states and 1985 transitions. [2022-07-14 01:32:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 01:32:53,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-07-14 01:32:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:32:53,605 INFO L225 Difference]: With dead ends: 1433 [2022-07-14 01:32:53,605 INFO L226 Difference]: Without dead ends: 719 [2022-07-14 01:32:53,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 01:32:53,609 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 176 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 01:32:53,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 3762 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 01:32:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-07-14 01:32:53,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2022-07-14 01:32:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 512 states have (on average 1.333984375) internal successors, (683), 530 states have internal predecessors, (683), 159 states have call successors, (159), 48 states have call predecessors, (159), 47 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-14 01:32:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 995 transitions. [2022-07-14 01:32:53,647 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 995 transitions. Word has length 39 [2022-07-14 01:32:53,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:32:53,649 INFO L495 AbstractCegarLoop]: Abstraction has 719 states and 995 transitions. [2022-07-14 01:32:53,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 01:32:53,649 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 995 transitions. [2022-07-14 01:32:53,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-14 01:32:53,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:32:53,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:32:53,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-14 01:32:53,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:32:53,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:32:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:32:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash 290922194, now seen corresponding path program 1 times [2022-07-14 01:32:53,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:32:53,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746809545] [2022-07-14 01:32:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:32:53,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:32:53,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:32:53,891 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) [2022-07-14 01:32:53,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-14 01:32:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:32:55,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 01:32:55,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:32:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:32:56,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:32:57,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:32:57,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:32:57,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746809545] [2022-07-14 01:32:57,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746809545] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:32:57,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 01:32:57,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-07-14 01:32:57,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480600614] [2022-07-14 01:32:57,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 01:32:57,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 01:32:57,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:32:57,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 01:32:57,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-14 01:32:57,456 INFO L87 Difference]: Start difference. First operand 719 states and 995 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 01:32:57,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:32:57,990 INFO L93 Difference]: Finished difference Result 1435 states and 1987 transitions. [2022-07-14 01:32:57,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 01:32:57,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2022-07-14 01:32:57,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:32:57,997 INFO L225 Difference]: With dead ends: 1435 [2022-07-14 01:32:57,997 INFO L226 Difference]: Without dead ends: 720 [2022-07-14 01:32:58,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-14 01:32:58,002 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 177 mSDsluCounter, 4550 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 5542 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 01:32:58,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 5542 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 01:32:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-07-14 01:32:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2022-07-14 01:32:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 513 states have (on average 1.3333333333333333) internal successors, (684), 531 states have internal predecessors, (684), 159 states have call successors, (159), 48 states have call predecessors, (159), 47 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-14 01:32:58,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 996 transitions. [2022-07-14 01:32:58,042 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 996 transitions. Word has length 40 [2022-07-14 01:32:58,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:32:58,043 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 996 transitions. [2022-07-14 01:32:58,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 01:32:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 996 transitions. [2022-07-14 01:32:58,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-14 01:32:58,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:32:58,046 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:32:58,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-14 01:32:58,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:32:58,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:32:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:32:58,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1769518197, now seen corresponding path program 2 times [2022-07-14 01:32:58,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:32:58,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861027367] [2022-07-14 01:32:58,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 01:32:58,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:32:58,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:32:58,294 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) [2022-07-14 01:32:58,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-14 01:32:59,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 01:32:59,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 01:33:00,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:33:00,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:33:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-14 01:33:00,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:33:00,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:33:00,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861027367] [2022-07-14 01:33:00,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861027367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:33:00,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:33:00,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 01:33:00,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597400333] [2022-07-14 01:33:00,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:33:00,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:33:00,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:33:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:33:00,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:00,288 INFO L87 Difference]: Start difference. First operand 720 states and 996 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 01:33:02,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:33:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:33:02,877 INFO L93 Difference]: Finished difference Result 2125 states and 2944 transitions. [2022-07-14 01:33:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:33:02,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-07-14 01:33:02,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:33:02,895 INFO L225 Difference]: With dead ends: 2125 [2022-07-14 01:33:02,895 INFO L226 Difference]: Without dead ends: 1413 [2022-07-14 01:33:02,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:02,900 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 959 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-14 01:33:02,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 2134 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-07-14 01:33:02,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2022-07-14 01:33:02,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1409. [2022-07-14 01:33:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1005 states have (on average 1.3333333333333333) internal successors, (1340), 1036 states have internal predecessors, (1340), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-14 01:33:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1952 transitions. [2022-07-14 01:33:02,976 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1952 transitions. Word has length 41 [2022-07-14 01:33:02,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:33:02,978 INFO L495 AbstractCegarLoop]: Abstraction has 1409 states and 1952 transitions. [2022-07-14 01:33:02,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 01:33:02,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1952 transitions. [2022-07-14 01:33:02,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-14 01:33:02,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:33:02,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:33:03,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-14 01:33:03,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:33:03,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:33:03,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:33:03,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1815198130, now seen corresponding path program 1 times [2022-07-14 01:33:03,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:33:03,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363130128] [2022-07-14 01:33:03,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:33:03,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:33:03,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:33:03,209 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) [2022-07-14 01:33:03,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-14 01:33:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:33:05,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 01:33:05,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:33:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:33:06,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:33:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 01:33:08,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:33:08,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363130128] [2022-07-14 01:33:08,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363130128] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:33:08,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 01:33:08,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-14 01:33:08,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007681265] [2022-07-14 01:33:08,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 01:33:08,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 01:33:08,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:33:08,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 01:33:08,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-14 01:33:08,809 INFO L87 Difference]: Start difference. First operand 1409 states and 1952 transitions. Second operand has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-14 01:33:09,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:33:09,859 INFO L93 Difference]: Finished difference Result 2808 states and 3895 transitions. [2022-07-14 01:33:09,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 01:33:09,860 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2022-07-14 01:33:09,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:33:09,869 INFO L225 Difference]: With dead ends: 2808 [2022-07-14 01:33:09,869 INFO L226 Difference]: Without dead ends: 1411 [2022-07-14 01:33:09,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-14 01:33:09,876 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 354 mSDsluCounter, 4749 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 5741 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-14 01:33:09,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 5741 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-14 01:33:09,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-07-14 01:33:09,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1411. [2022-07-14 01:33:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1007 states have (on average 1.3326713008937439) internal successors, (1342), 1038 states have internal predecessors, (1342), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-14 01:33:09,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1954 transitions. [2022-07-14 01:33:09,931 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1954 transitions. Word has length 61 [2022-07-14 01:33:09,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:33:09,932 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1954 transitions. [2022-07-14 01:33:09,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-14 01:33:09,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1954 transitions. [2022-07-14 01:33:09,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-14 01:33:09,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:33:09,934 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:33:09,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-14 01:33:10,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:33:10,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:33:10,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:33:10,148 INFO L85 PathProgramCache]: Analyzing trace with hash 934865561, now seen corresponding path program 2 times [2022-07-14 01:33:10,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:33:10,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738515392] [2022-07-14 01:33:10,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 01:33:10,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:33:10,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:33:10,153 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) [2022-07-14 01:33:10,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-14 01:33:11,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 01:33:11,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 01:33:12,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:33:12,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:33:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-14 01:33:12,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:33:12,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:33:12,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738515392] [2022-07-14 01:33:12,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738515392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:33:12,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:33:12,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 01:33:12,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31095659] [2022-07-14 01:33:12,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:33:12,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:33:12,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:33:12,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:33:12,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:12,170 INFO L87 Difference]: Start difference. First operand 1411 states and 1954 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 01:33:12,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:33:12,504 INFO L93 Difference]: Finished difference Result 1433 states and 1980 transitions. [2022-07-14 01:33:12,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:33:12,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2022-07-14 01:33:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:33:12,513 INFO L225 Difference]: With dead ends: 1433 [2022-07-14 01:33:12,514 INFO L226 Difference]: Without dead ends: 1422 [2022-07-14 01:33:12,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:12,515 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 989 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 01:33:12,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1019 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 01:33:12,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2022-07-14 01:33:12,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1411. [2022-07-14 01:33:12,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1007 states have (on average 1.3316782522343595) internal successors, (1341), 1038 states have internal predecessors, (1341), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-14 01:33:12,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1953 transitions. [2022-07-14 01:33:12,572 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1953 transitions. Word has length 62 [2022-07-14 01:33:12,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:33:12,573 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1953 transitions. [2022-07-14 01:33:12,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 01:33:12,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1953 transitions. [2022-07-14 01:33:12,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-14 01:33:12,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:33:12,575 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:33:12,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-14 01:33:12,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:33:12,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:33:12,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:33:12,792 INFO L85 PathProgramCache]: Analyzing trace with hash 992123863, now seen corresponding path program 1 times [2022-07-14 01:33:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:33:12,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9273980] [2022-07-14 01:33:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:33:12,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:33:12,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:33:12,799 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) [2022-07-14 01:33:12,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-14 01:33:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:33:14,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 01:33:14,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:33:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:33:16,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:33:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 01:33:19,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:33:19,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9273980] [2022-07-14 01:33:19,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9273980] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:33:19,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 01:33:19,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-14 01:33:19,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419280237] [2022-07-14 01:33:19,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 01:33:19,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 01:33:19,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:33:19,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 01:33:19,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-14 01:33:19,851 INFO L87 Difference]: Start difference. First operand 1411 states and 1953 transitions. Second operand has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-14 01:33:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:33:21,450 INFO L93 Difference]: Finished difference Result 2812 states and 3897 transitions. [2022-07-14 01:33:21,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 01:33:21,451 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) Word has length 62 [2022-07-14 01:33:21,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:33:21,459 INFO L225 Difference]: With dead ends: 2812 [2022-07-14 01:33:21,459 INFO L226 Difference]: Without dead ends: 1413 [2022-07-14 01:33:21,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-14 01:33:21,465 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 181 mSDsluCounter, 5540 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-14 01:33:21,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 6532 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-14 01:33:21,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2022-07-14 01:33:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1413. [2022-07-14 01:33:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1009 states have (on average 1.3310208126858276) internal successors, (1343), 1040 states have internal predecessors, (1343), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-14 01:33:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1955 transitions. [2022-07-14 01:33:21,523 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1955 transitions. Word has length 62 [2022-07-14 01:33:21,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:33:21,525 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 1955 transitions. [2022-07-14 01:33:21,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-14 01:33:21,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1955 transitions. [2022-07-14 01:33:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-14 01:33:21,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:33:21,527 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:33:21,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-14 01:33:21,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:33:21,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:33:21,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:33:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash -528382000, now seen corresponding path program 2 times [2022-07-14 01:33:21,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:33:21,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645053540] [2022-07-14 01:33:21,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 01:33:21,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:33:21,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:33:21,751 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) [2022-07-14 01:33:21,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-14 01:33:23,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 01:33:23,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 01:33:23,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:33:23,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:33:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 01:33:26,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:33:26,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:33:26,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645053540] [2022-07-14 01:33:26,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645053540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:33:26,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:33:26,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 01:33:26,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190678570] [2022-07-14 01:33:26,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:33:26,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:33:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:33:26,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:33:26,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:26,024 INFO L87 Difference]: Start difference. First operand 1413 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 01:33:26,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:33:26,080 INFO L93 Difference]: Finished difference Result 1415 states and 1956 transitions. [2022-07-14 01:33:26,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:33:26,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2022-07-14 01:33:26,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:33:26,088 INFO L225 Difference]: With dead ends: 1415 [2022-07-14 01:33:26,088 INFO L226 Difference]: Without dead ends: 1412 [2022-07-14 01:33:26,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:26,089 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 948 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 01:33:26,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 991 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 01:33:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-07-14 01:33:26,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2022-07-14 01:33:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1009 states have (on average 1.330029732408325) internal successors, (1342), 1039 states have internal predecessors, (1342), 308 states have call successors, (308), 95 states have call predecessors, (308), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-14 01:33:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1953 transitions. [2022-07-14 01:33:26,142 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1953 transitions. Word has length 63 [2022-07-14 01:33:26,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:33:26,142 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 1953 transitions. [2022-07-14 01:33:26,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 01:33:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1953 transitions. [2022-07-14 01:33:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-14 01:33:26,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:33:26,144 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:33:26,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-14 01:33:26,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:33:26,363 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:33:26,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:33:26,364 INFO L85 PathProgramCache]: Analyzing trace with hash 799813546, now seen corresponding path program 1 times [2022-07-14 01:33:26,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:33:26,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39528849] [2022-07-14 01:33:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:33:26,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:33:26,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:33:26,370 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) [2022-07-14 01:33:26,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-14 01:33:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:33:28,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:33:28,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:33:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 01:33:30,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:33:30,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:33:30,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39528849] [2022-07-14 01:33:30,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39528849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:33:30,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:33:30,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 01:33:30,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912986661] [2022-07-14 01:33:30,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:33:30,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:33:30,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:33:30,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:33:30,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:30,943 INFO L87 Difference]: Start difference. First operand 1412 states and 1953 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 01:33:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:33:31,014 INFO L93 Difference]: Finished difference Result 1414 states and 1954 transitions. [2022-07-14 01:33:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:33:31,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2022-07-14 01:33:31,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:33:31,023 INFO L225 Difference]: With dead ends: 1414 [2022-07-14 01:33:31,023 INFO L226 Difference]: Without dead ends: 1411 [2022-07-14 01:33:31,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:31,026 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 945 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 01:33:31,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 989 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 01:33:31,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-07-14 01:33:31,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1411. [2022-07-14 01:33:31,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1009 states have (on average 1.3290386521308226) internal successors, (1341), 1038 states have internal predecessors, (1341), 307 states have call successors, (307), 95 states have call predecessors, (307), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-14 01:33:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1951 transitions. [2022-07-14 01:33:31,085 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1951 transitions. Word has length 64 [2022-07-14 01:33:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:33:31,085 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1951 transitions. [2022-07-14 01:33:31,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 01:33:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1951 transitions. [2022-07-14 01:33:31,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-14 01:33:31,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:33:31,088 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:33:31,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-14 01:33:31,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:33:31,302 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:33:31,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:33:31,303 INFO L85 PathProgramCache]: Analyzing trace with hash -975792621, now seen corresponding path program 1 times [2022-07-14 01:33:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:33:31,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886382980] [2022-07-14 01:33:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:33:31,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:33:31,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:33:31,309 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 01:33:31,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-14 01:33:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:33:33,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 3203 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:33:33,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:33:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 01:33:35,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:33:35,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:33:35,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886382980] [2022-07-14 01:33:35,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886382980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:33:35,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:33:35,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 01:33:35,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58607311] [2022-07-14 01:33:35,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:33:35,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:33:35,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:33:35,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:33:35,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:35,864 INFO L87 Difference]: Start difference. First operand 1411 states and 1951 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 01:33:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:33:35,917 INFO L93 Difference]: Finished difference Result 1413 states and 1952 transitions. [2022-07-14 01:33:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:33:35,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2022-07-14 01:33:35,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:33:35,925 INFO L225 Difference]: With dead ends: 1413 [2022-07-14 01:33:35,926 INFO L226 Difference]: Without dead ends: 1410 [2022-07-14 01:33:35,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:35,927 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 942 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 01:33:35,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 987 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 01:33:35,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2022-07-14 01:33:35,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1410. [2022-07-14 01:33:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1009 states have (on average 1.32804757185332) internal successors, (1340), 1037 states have internal predecessors, (1340), 306 states have call successors, (306), 95 states have call predecessors, (306), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-14 01:33:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1949 transitions. [2022-07-14 01:33:35,981 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1949 transitions. Word has length 65 [2022-07-14 01:33:35,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:33:35,981 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 1949 transitions. [2022-07-14 01:33:35,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 01:33:35,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1949 transitions. [2022-07-14 01:33:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-14 01:33:35,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:33:35,983 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:33:36,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-14 01:33:36,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:33:36,198 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:33:36,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:33:36,199 INFO L85 PathProgramCache]: Analyzing trace with hash -185004083, now seen corresponding path program 1 times [2022-07-14 01:33:36,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:33:36,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990529606] [2022-07-14 01:33:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:33:36,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:33:36,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:33:36,205 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) [2022-07-14 01:33:36,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-14 01:33:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:33:38,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:33:38,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:33:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 01:33:40,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:33:40,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:33:40,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990529606] [2022-07-14 01:33:40,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990529606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:33:40,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:33:40,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 01:33:40,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419762572] [2022-07-14 01:33:40,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:33:40,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:33:40,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:33:40,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:33:40,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:40,628 INFO L87 Difference]: Start difference. First operand 1410 states and 1949 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 01:33:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:33:40,856 INFO L93 Difference]: Finished difference Result 4176 states and 5791 transitions. [2022-07-14 01:33:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:33:40,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 66 [2022-07-14 01:33:40,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:33:40,874 INFO L225 Difference]: With dead ends: 4176 [2022-07-14 01:33:40,875 INFO L226 Difference]: Without dead ends: 2776 [2022-07-14 01:33:40,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:40,882 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 931 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:33:40,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 2140 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 01:33:40,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2022-07-14 01:33:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2771. [2022-07-14 01:33:40,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 1981 states have (on average 1.331145885916204) internal successors, (2637), 2035 states have internal predecessors, (2637), 605 states have call successors, (605), 187 states have call predecessors, (605), 184 states have return successors, (602), 600 states have call predecessors, (602), 602 states have call successors, (602) [2022-07-14 01:33:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 3844 transitions. [2022-07-14 01:33:41,004 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 3844 transitions. Word has length 66 [2022-07-14 01:33:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:33:41,004 INFO L495 AbstractCegarLoop]: Abstraction has 2771 states and 3844 transitions. [2022-07-14 01:33:41,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 01:33:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 3844 transitions. [2022-07-14 01:33:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-14 01:33:41,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:33:41,007 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:33:41,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-07-14 01:33:41,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:33:41,231 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:33:41,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:33:41,232 INFO L85 PathProgramCache]: Analyzing trace with hash -779176628, now seen corresponding path program 1 times [2022-07-14 01:33:41,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:33:41,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567434096] [2022-07-14 01:33:41,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:33:41,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:33:41,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:33:41,237 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) [2022-07-14 01:33:41,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-14 01:33:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:33:43,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 3558 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:33:43,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:33:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-14 01:33:44,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:33:44,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:33:44,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567434096] [2022-07-14 01:33:44,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567434096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:33:44,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:33:44,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 01:33:44,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036510425] [2022-07-14 01:33:44,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:33:44,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:33:44,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:33:44,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:33:44,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:44,156 INFO L87 Difference]: Start difference. First operand 2771 states and 3844 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-14 01:33:44,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:33:44,895 INFO L93 Difference]: Finished difference Result 5599 states and 7766 transitions. [2022-07-14 01:33:44,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:33:44,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2022-07-14 01:33:44,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:33:44,914 INFO L225 Difference]: With dead ends: 5599 [2022-07-14 01:33:44,914 INFO L226 Difference]: Without dead ends: 2846 [2022-07-14 01:33:44,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:33:44,929 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 52 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 01:33:44,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1948 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-14 01:33:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-07-14 01:33:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2833. [2022-07-14 01:33:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2833 states, 2041 states have (on average 1.33219010289074) internal successors, (2719), 2095 states have internal predecessors, (2719), 605 states have call successors, (605), 189 states have call predecessors, (605), 186 states have return successors, (602), 600 states have call predecessors, (602), 602 states have call successors, (602) [2022-07-14 01:33:45,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3926 transitions. [2022-07-14 01:33:45,080 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3926 transitions. Word has length 112 [2022-07-14 01:33:45,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:33:45,080 INFO L495 AbstractCegarLoop]: Abstraction has 2833 states and 3926 transitions. [2022-07-14 01:33:45,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-14 01:33:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3926 transitions. [2022-07-14 01:33:45,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-14 01:33:45,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:33:45,088 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:33:45,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-14 01:33:45,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:33:45,307 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:33:45,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:33:45,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2095317379, now seen corresponding path program 1 times [2022-07-14 01:33:45,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:33:45,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752006714] [2022-07-14 01:33:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:33:45,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:33:45,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:33:45,315 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) [2022-07-14 01:33:45,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-14 01:33:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:33:48,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 3652 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 01:33:48,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:33:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-14 01:33:49,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:33:49,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:33:49,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752006714] [2022-07-14 01:33:49,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752006714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:33:49,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:33:49,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 01:33:49,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808696600] [2022-07-14 01:33:49,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:33:49,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 01:33:49,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:33:49,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 01:33:49,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 01:33:49,615 INFO L87 Difference]: Start difference. First operand 2833 states and 3926 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 01:33:52,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:33:54,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:33:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:33:55,133 INFO L93 Difference]: Finished difference Result 5905 states and 8249 transitions. [2022-07-14 01:33:55,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 01:33:55,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-07-14 01:33:55,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:33:55,149 INFO L225 Difference]: With dead ends: 5905 [2022-07-14 01:33:55,150 INFO L226 Difference]: Without dead ends: 3102 [2022-07-14 01:33:55,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:33:55,160 INFO L413 NwaCegarLoop]: 1072 mSDtfsCounter, 152 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 5191 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:33:55,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 5191 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 5.1s Time] [2022-07-14 01:33:55,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2022-07-14 01:33:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 2853. [2022-07-14 01:33:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2057 states have (on average 1.329606222654351) internal successors, (2735), 2111 states have internal predecessors, (2735), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-14 01:33:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 3970 transitions. [2022-07-14 01:33:55,301 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 3970 transitions. Word has length 141 [2022-07-14 01:33:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:33:55,301 INFO L495 AbstractCegarLoop]: Abstraction has 2853 states and 3970 transitions. [2022-07-14 01:33:55,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 01:33:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 3970 transitions. [2022-07-14 01:33:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-14 01:33:55,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:33:55,306 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:33:55,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-14 01:33:55,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:33:55,531 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:33:55,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:33:55,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1072486492, now seen corresponding path program 1 times [2022-07-14 01:33:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:33:55,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65742599] [2022-07-14 01:33:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:33:55,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:33:55,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:33:55,538 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) [2022-07-14 01:33:55,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-14 01:33:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:33:59,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 01:33:59,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:34:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-14 01:34:00,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:34:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:34:03,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:34:03,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65742599] [2022-07-14 01:34:03,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65742599] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:34:03,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 01:34:03,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-14 01:34:03,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309467968] [2022-07-14 01:34:03,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 01:34:03,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 01:34:03,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:34:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 01:34:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-14 01:34:03,433 INFO L87 Difference]: Start difference. First operand 2853 states and 3970 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-14 01:34:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:34:08,673 INFO L93 Difference]: Finished difference Result 5726 states and 7989 transitions. [2022-07-14 01:34:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 01:34:08,674 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 147 [2022-07-14 01:34:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:34:08,690 INFO L225 Difference]: With dead ends: 5726 [2022-07-14 01:34:08,690 INFO L226 Difference]: Without dead ends: 2887 [2022-07-14 01:34:08,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-07-14 01:34:08,703 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 26 mSDsluCounter, 4918 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5903 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-14 01:34:08,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5903 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-14 01:34:08,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2022-07-14 01:34:08,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2877. [2022-07-14 01:34:08,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2081 states have (on average 1.3258049014896685) internal successors, (2759), 2135 states have internal predecessors, (2759), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-14 01:34:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 3994 transitions. [2022-07-14 01:34:08,841 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 3994 transitions. Word has length 147 [2022-07-14 01:34:08,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:34:08,841 INFO L495 AbstractCegarLoop]: Abstraction has 2877 states and 3994 transitions. [2022-07-14 01:34:08,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-14 01:34:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 3994 transitions. [2022-07-14 01:34:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-14 01:34:08,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:34:08,880 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:34:08,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-14 01:34:09,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:34:09,081 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:34:09,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:34:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1148257020, now seen corresponding path program 2 times [2022-07-14 01:34:09,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:34:09,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297618738] [2022-07-14 01:34:09,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 01:34:09,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:34:09,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:34:09,088 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) [2022-07-14 01:34:09,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-14 01:34:11,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 01:34:11,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 01:34:11,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:34:11,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:34:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-14 01:34:11,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:34:11,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:34:11,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297618738] [2022-07-14 01:34:11,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297618738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:34:11,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:34:11,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 01:34:11,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889523812] [2022-07-14 01:34:11,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:34:11,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:34:11,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:34:11,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:34:11,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:34:11,616 INFO L87 Difference]: Start difference. First operand 2877 states and 3994 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-14 01:34:11,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:34:11,879 INFO L93 Difference]: Finished difference Result 6273 states and 8767 transitions. [2022-07-14 01:34:11,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:34:11,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 153 [2022-07-14 01:34:11,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:34:11,902 INFO L225 Difference]: With dead ends: 6273 [2022-07-14 01:34:11,902 INFO L226 Difference]: Without dead ends: 3426 [2022-07-14 01:34:11,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:34:11,916 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 147 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 01:34:11,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2181 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 01:34:11,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2022-07-14 01:34:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 2889. [2022-07-14 01:34:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2093 states have (on average 1.3239369326325847) internal successors, (2771), 2147 states have internal predecessors, (2771), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-14 01:34:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4006 transitions. [2022-07-14 01:34:12,049 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4006 transitions. Word has length 153 [2022-07-14 01:34:12,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:34:12,050 INFO L495 AbstractCegarLoop]: Abstraction has 2889 states and 4006 transitions. [2022-07-14 01:34:12,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-14 01:34:12,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4006 transitions. [2022-07-14 01:34:12,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-14 01:34:12,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:34:12,055 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:34:12,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-14 01:34:12,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:34:12,271 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:34:12,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:34:12,272 INFO L85 PathProgramCache]: Analyzing trace with hash -604240790, now seen corresponding path program 1 times [2022-07-14 01:34:12,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:34:12,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229880] [2022-07-14 01:34:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:34:12,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:34:12,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:34:12,312 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) [2022-07-14 01:34:12,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-14 01:34:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:34:16,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 3771 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 01:34:16,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:34:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 67 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-14 01:34:19,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:34:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 57 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:34:29,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:34:29,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229880] [2022-07-14 01:34:29,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229880] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:34:29,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 01:34:29,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-14 01:34:29,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356889229] [2022-07-14 01:34:29,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 01:34:29,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-14 01:34:29,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:34:29,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-14 01:34:29,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-14 01:34:29,748 INFO L87 Difference]: Start difference. First operand 2889 states and 4006 transitions. Second operand has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-14 01:34:51,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:34:51,879 INFO L93 Difference]: Finished difference Result 5846 states and 8145 transitions. [2022-07-14 01:34:51,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-14 01:34:51,880 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 169 [2022-07-14 01:34:51,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:34:51,913 INFO L225 Difference]: With dead ends: 5846 [2022-07-14 01:34:51,913 INFO L226 Difference]: Without dead ends: 2971 [2022-07-14 01:34:51,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=635, Invalid=1171, Unknown=0, NotChecked=0, Total=1806 [2022-07-14 01:34:51,927 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 158 mSDsluCounter, 14805 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 15796 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-14 01:34:51,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 15796 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-07-14 01:34:51,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2022-07-14 01:34:52,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2937. [2022-07-14 01:34:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2141 states have (on average 1.3166744511910322) internal successors, (2819), 2195 states have internal predecessors, (2819), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-14 01:34:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 4054 transitions. [2022-07-14 01:34:52,086 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 4054 transitions. Word has length 169 [2022-07-14 01:34:52,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:34:52,087 INFO L495 AbstractCegarLoop]: Abstraction has 2937 states and 4054 transitions. [2022-07-14 01:34:52,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-14 01:34:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 4054 transitions. [2022-07-14 01:34:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-14 01:34:52,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:34:52,103 INFO L195 NwaCegarLoop]: trace histogram [26, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:34:52,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-14 01:34:52,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:34:52,320 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:34:52,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:34:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash 731148714, now seen corresponding path program 2 times [2022-07-14 01:34:52,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:34:52,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208082725] [2022-07-14 01:34:52,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 01:34:52,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:34:52,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:34:52,326 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) [2022-07-14 01:34:52,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-14 01:34:54,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 01:34:54,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 01:34:54,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 3127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:34:54,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:34:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2022-07-14 01:34:55,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:34:55,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:34:55,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208082725] [2022-07-14 01:34:55,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208082725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:34:55,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:34:55,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 01:34:55,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780197297] [2022-07-14 01:34:55,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:34:55,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:34:55,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:34:55,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:34:55,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:34:55,440 INFO L87 Difference]: Start difference. First operand 2937 states and 4054 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-14 01:34:57,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:34:57,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:34:57,899 INFO L93 Difference]: Finished difference Result 5846 states and 8078 transitions. [2022-07-14 01:34:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:34:57,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 181 [2022-07-14 01:34:57,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:34:57,916 INFO L225 Difference]: With dead ends: 5846 [2022-07-14 01:34:57,917 INFO L226 Difference]: Without dead ends: 2939 [2022-07-14 01:34:57,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:34:57,930 INFO L413 NwaCegarLoop]: 1901 mSDtfsCounter, 960 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-14 01:34:57,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2867 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-14 01:34:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-07-14 01:34:58,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2934. [2022-07-14 01:34:58,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2934 states, 2139 states have (on average 1.3151005142589995) internal successors, (2813), 2193 states have internal predecessors, (2813), 604 states have call successors, (604), 188 states have call predecessors, (604), 190 states have return successors, (628), 604 states have call predecessors, (628), 600 states have call successors, (628) [2022-07-14 01:34:58,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4045 transitions. [2022-07-14 01:34:58,069 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4045 transitions. Word has length 181 [2022-07-14 01:34:58,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:34:58,070 INFO L495 AbstractCegarLoop]: Abstraction has 2934 states and 4045 transitions. [2022-07-14 01:34:58,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-14 01:34:58,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4045 transitions. [2022-07-14 01:34:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-14 01:34:58,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:34:58,077 INFO L195 NwaCegarLoop]: trace histogram [26, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:34:58,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-14 01:34:58,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:34:58,292 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:34:58,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:34:58,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1008632914, now seen corresponding path program 1 times [2022-07-14 01:34:58,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:34:58,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172807982] [2022-07-14 01:34:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:34:58,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:34:58,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:34:58,300 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) [2022-07-14 01:34:58,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-14 01:35:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:35:02,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 3911 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-14 01:35:02,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:35:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 127 proven. 253 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-14 01:35:17,549 INFO L328 TraceCheckSpWp]: Computing backward predicates...