./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.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-43_2a-drivers--usb--serial--mos7840.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 c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 02:19:12,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 02:19:12,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 02:19:13,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 02:19:13,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 02:19:13,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 02:19:13,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 02:19:13,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 02:19:13,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 02:19:13,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 02:19:13,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 02:19:13,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 02:19:13,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 02:19:13,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 02:19:13,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 02:19:13,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 02:19:13,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 02:19:13,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 02:19:13,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 02:19:13,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 02:19:13,049 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 02:19:13,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 02:19:13,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 02:19:13,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 02:19:13,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 02:19:13,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 02:19:13,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 02:19:13,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 02:19:13,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 02:19:13,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 02:19:13,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 02:19:13,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 02:19:13,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 02:19:13,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 02:19:13,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 02:19:13,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 02:19:13,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 02:19:13,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 02:19:13,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 02:19:13,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 02:19:13,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 02:19:13,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 02:19:13,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 02:19:13,087 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 02:19:13,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 02:19:13,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 02:19:13,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 02:19:13,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 02:19:13,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 02:19:13,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 02:19:13,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 02:19:13,090 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 02:19:13,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 02:19:13,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 02:19:13,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 02:19:13,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 02:19:13,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 02:19:13,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 02:19:13,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 02:19:13,091 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 02:19:13,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 02:19:13,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 02:19:13,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 02:19:13,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 02:19:13,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 02:19:13,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 02:19:13,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 02:19:13,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 02:19:13,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 02:19:13,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 02:19:13,094 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 02:19:13,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 02:19:13,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 02:19:13,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2022-07-14 02:19:13,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 02:19:13,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 02:19:13,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 02:19:13,333 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 02:19:13,333 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 02:19:13,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-07-14 02:19:13,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8a8a6da/36e77403549c4aa3873648f3e1c24525/FLAGb49d97c5a [2022-07-14 02:19:13,953 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 02:19:13,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-07-14 02:19:13,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8a8a6da/36e77403549c4aa3873648f3e1c24525/FLAGb49d97c5a [2022-07-14 02:19:14,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8a8a6da/36e77403549c4aa3873648f3e1c24525 [2022-07-14 02:19:14,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 02:19:14,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 02:19:14,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 02:19:14,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 02:19:14,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 02:19:14,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:19:14" (1/1) ... [2022-07-14 02:19:14,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1350ab3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:14, skipping insertion in model container [2022-07-14 02:19:14,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:19:14" (1/1) ... [2022-07-14 02:19:14,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 02:19:14,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 02:19:15,314 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2022-07-14 02:19:15,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 02:19:15,396 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 02:19:15,565 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckException: Type check failed for C: Data = (unsigned int )Data & 65407U [5538] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckBinaryExpression(TypeCheckHelper.java:207) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.constructBinaryExpression(ExpressionFactory.java:597) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.newBinaryExpression(ExpressionFactory.java:132) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:483) 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 02:19:15,572 INFO L158 Benchmark]: Toolchain (without parser) took 1412.28ms. Allocated memory was 98.6MB in the beginning and 190.8MB in the end (delta: 92.3MB). Free memory was 55.6MB in the beginning and 131.4MB in the end (delta: -75.7MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. [2022-07-14 02:19:15,573 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 55.8MB in the beginning and 55.7MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 02:19:15,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1410.75ms. Allocated memory was 98.6MB in the beginning and 190.8MB in the end (delta: 92.3MB). Free memory was 55.4MB in the beginning and 131.4MB in the end (delta: -75.9MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. [2022-07-14 02:19:15,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 55.8MB in the beginning and 55.7MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1410.75ms. Allocated memory was 98.6MB in the beginning and 190.8MB in the end (delta: 92.3MB). Free memory was 55.4MB in the beginning and 131.4MB in the end (delta: -75.9MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: Data = (unsigned int )Data & 65407U [5538] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: Data = (unsigned int )Data & 65407U [5538]: de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.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 c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 02:19:17,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 02:19:17,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 02:19:17,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 02:19:17,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 02:19:17,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 02:19:17,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 02:19:17,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 02:19:17,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 02:19:17,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 02:19:17,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 02:19:17,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 02:19:17,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 02:19:17,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 02:19:17,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 02:19:17,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 02:19:17,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 02:19:17,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 02:19:17,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 02:19:17,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 02:19:17,182 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 02:19:17,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 02:19:17,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 02:19:17,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 02:19:17,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 02:19:17,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 02:19:17,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 02:19:17,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 02:19:17,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 02:19:17,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 02:19:17,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 02:19:17,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 02:19:17,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 02:19:17,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 02:19:17,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 02:19:17,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 02:19:17,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 02:19:17,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 02:19:17,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 02:19:17,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 02:19:17,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 02:19:17,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 02:19:17,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-14 02:19:17,230 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 02:19:17,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 02:19:17,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 02:19:17,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 02:19:17,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 02:19:17,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 02:19:17,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 02:19:17,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 02:19:17,233 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 02:19:17,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 02:19:17,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 02:19:17,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 02:19:17,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 02:19:17,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 02:19:17,235 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 02:19:17,235 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 02:19:17,235 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 02:19:17,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 02:19:17,235 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 02:19:17,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 02:19:17,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 02:19:17,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 02:19:17,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 02:19:17,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 02:19:17,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 02:19:17,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 02:19:17,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 02:19:17,237 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 02:19:17,237 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 02:19:17,237 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 02:19:17,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 02:19:17,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 02:19:17,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 02:19:17,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2022-07-14 02:19:17,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 02:19:17,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 02:19:17,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 02:19:17,541 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 02:19:17,541 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 02:19:17,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-07-14 02:19:17,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324721daf/5dec6bf575ee4639b24137932b82eae0/FLAG2e7a65d9d [2022-07-14 02:19:18,236 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 02:19:18,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-07-14 02:19:18,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324721daf/5dec6bf575ee4639b24137932b82eae0/FLAG2e7a65d9d [2022-07-14 02:19:18,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324721daf/5dec6bf575ee4639b24137932b82eae0 [2022-07-14 02:19:18,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 02:19:18,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 02:19:18,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 02:19:18,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 02:19:18,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 02:19:18,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:19:18" (1/1) ... [2022-07-14 02:19:18,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e439108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:18, skipping insertion in model container [2022-07-14 02:19:18,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:19:18" (1/1) ... [2022-07-14 02:19:18,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 02:19:18,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 02:19:19,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2022-07-14 02:19:19,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 02:19:19,914 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 02:19:19,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 02:19:20,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2022-07-14 02:19:20,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 02:19:20,228 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 02:19:20,496 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2022-07-14 02:19:20,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 02:19:20,555 INFO L208 MainTranslator]: Completed translation [2022-07-14 02:19:20,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:20 WrapperNode [2022-07-14 02:19:20,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 02:19:20,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 02:19:20,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 02:19:20,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 02:19:20,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:20" (1/1) ... [2022-07-14 02:19:20,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:20" (1/1) ... [2022-07-14 02:19:20,811 INFO L137 Inliner]: procedures = 206, calls = 3778, calls flagged for inlining = 80, calls inlined = 67, statements flattened = 6598 [2022-07-14 02:19:20,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 02:19:20,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 02:19:20,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 02:19:20,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 02:19:20,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:20" (1/1) ... [2022-07-14 02:19:20,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:20" (1/1) ... [2022-07-14 02:19:20,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:20" (1/1) ... [2022-07-14 02:19:20,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:20" (1/1) ... [2022-07-14 02:19:20,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:20" (1/1) ... [2022-07-14 02:19:21,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:20" (1/1) ... [2022-07-14 02:19:21,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:20" (1/1) ... [2022-07-14 02:19:21,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 02:19:21,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 02:19:21,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 02:19:21,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 02:19:21,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:20" (1/1) ... [2022-07-14 02:19:21,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 02:19:21,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 02:19:21,107 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 02:19:21,113 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 02:19:21,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-14 02:19:21,134 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_reg_sync [2022-07-14 02:19:21,134 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_reg_sync [2022-07-14 02:19:21,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-14 02:19:21,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-14 02:19:21,134 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_reg_sync [2022-07-14 02:19:21,135 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_reg_sync [2022-07-14 02:19:21,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 02:19:21,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-14 02:19:21,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 02:19:21,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 02:19:21,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 02:19:21,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-14 02:19:21,135 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-14 02:19:21,135 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_tiocmiwait [2022-07-14 02:19:21,136 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_tiocmiwait [2022-07-14 02:19:21,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-14 02:19:21,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-14 02:19:21,136 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2022-07-14 02:19:21,136 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2022-07-14 02:19:21,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 02:19:21,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 02:19:21,136 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_port_private [2022-07-14 02:19:21,136 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_port_private [2022-07-14 02:19:21,137 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-07-14 02:19:21,137 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-07-14 02:19:21,137 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2022-07-14 02:19:21,137 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2022-07-14 02:19:21,137 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_usb_serial [2022-07-14 02:19:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_usb_serial [2022-07-14 02:19:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_get_icount [2022-07-14 02:19:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_get_icount [2022-07-14 02:19:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-14 02:19:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-14 02:19:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 02:19:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 02:19:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_termios [2022-07-14 02:19:21,139 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_termios [2022-07-14 02:19:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_3 [2022-07-14 02:19:21,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_3 [2022-07-14 02:19:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 02:19:21,139 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 02:19:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 02:19:21,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 02:19:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_chars_in_buffer [2022-07-14 02:19:21,140 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_chars_in_buffer [2022-07-14 02:19:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_throttle [2022-07-14 02:19:21,140 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_throttle [2022-07-14 02:19:21,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-07-14 02:19:21,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-07-14 02:19:21,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-07-14 02:19:21,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-07-14 02:19:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 02:19:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 02:19:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-14 02:19:21,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-14 02:19:21,143 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-14 02:19:21,143 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-14 02:19:21,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-14 02:19:21,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-14 02:19:21,143 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_bulk_in_callback [2022-07-14 02:19:21,143 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_bulk_in_callback [2022-07-14 02:19:21,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-14 02:19:21,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 02:19:21,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 02:19:21,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 02:19:21,144 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_calc_num_ports [2022-07-14 02:19:21,144 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_calc_num_ports [2022-07-14 02:19:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_break [2022-07-14 02:19:21,145 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_break [2022-07-14 02:19:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmset [2022-07-14 02:19:21,145 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmset [2022-07-14 02:19:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-14 02:19:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-14 02:19:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-14 02:19:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-14 02:19:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_unthrottle [2022-07-14 02:19:21,145 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_unthrottle [2022-07-14 02:19:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-14 02:19:21,146 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-14 02:19:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-07-14 02:19:21,146 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-07-14 02:19:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_remove [2022-07-14 02:19:21,147 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_remove [2022-07-14 02:19:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_probe [2022-07-14 02:19:21,147 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_probe [2022-07-14 02:19:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-07-14 02:19:21,147 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-07-14 02:19:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write [2022-07-14 02:19:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write [2022-07-14 02:19:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-14 02:19:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-14 02:19:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_ioctl [2022-07-14 02:19:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_ioctl [2022-07-14 02:19:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-14 02:19:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-14 02:19:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-14 02:19:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-14 02:19:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-14 02:19:21,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-14 02:19:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-07-14 02:19:21,150 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-07-14 02:19:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_uart_reg [2022-07-14 02:19:21,150 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_uart_reg [2022-07-14 02:19:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 02:19:21,150 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 02:19:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_async [2022-07-14 02:19:21,151 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_async [2022-07-14 02:19:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-14 02:19:21,151 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-14 02:19:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-14 02:19:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-14 02:19:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-14 02:19:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-14 02:19:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 02:19:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 02:19:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_sync [2022-07-14 02:19:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_sync [2022-07-14 02:19:21,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-14 02:19:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-14 02:19:21,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 02:19:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-07-14 02:19:21,159 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-07-14 02:19:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-14 02:19:21,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-14 02:19:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 02:19:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 02:19:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-14 02:19:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-14 02:19:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-07-14 02:19:21,160 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-07-14 02:19:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit_lock [2022-07-14 02:19:21,160 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit_lock [2022-07-14 02:19:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-14 02:19:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_uart_reg [2022-07-14 02:19:21,161 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_uart_reg [2022-07-14 02:19:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-07-14 02:19:21,161 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-07-14 02:19:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-14 02:19:21,161 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-14 02:19:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-14 02:19:21,161 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-14 02:19:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_paranoia_check [2022-07-14 02:19:21,161 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_paranoia_check [2022-07-14 02:19:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_serial_paranoia_check [2022-07-14 02:19:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_serial_paranoia_check [2022-07-14 02:19:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_led_activity [2022-07-14 02:19:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_led_activity [2022-07-14 02:19:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write_room [2022-07-14 02:19:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write_room [2022-07-14 02:19:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmget [2022-07-14 02:19:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmget [2022-07-14 02:19:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-14 02:19:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-14 02:19:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_port_private [2022-07-14 02:19:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_port_private [2022-07-14 02:19:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-14 02:19:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2022-07-14 02:19:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2022-07-14 02:19:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 02:19:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 02:19:21,796 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 02:19:21,798 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 02:19:36,999 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 02:20:37,912 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 02:20:37,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 02:20:37,944 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 02:20:37,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:20:37 BoogieIcfgContainer [2022-07-14 02:20:37,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 02:20:37,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 02:20:37,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 02:20:37,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 02:20:37,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 02:19:18" (1/3) ... [2022-07-14 02:20:37,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef09344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:20:37, skipping insertion in model container [2022-07-14 02:20:37,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:19:20" (2/3) ... [2022-07-14 02:20:37,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef09344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:20:37, skipping insertion in model container [2022-07-14 02:20:37,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:20:37" (3/3) ... [2022-07-14 02:20:37,957 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2022-07-14 02:20:37,968 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 02:20:37,968 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 02:20:38,055 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 02:20:38,061 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@49a45fbe, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a4013a4 [2022-07-14 02:20:38,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 02:20:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 1732 states, 1231 states have (on average 1.3899268887083671) internal successors, (1711), 1254 states have internal predecessors, (1711), 435 states have call successors, (435), 65 states have call predecessors, (435), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) [2022-07-14 02:20:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-14 02:20:38,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:20:38,092 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 02:20:38,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:20:38,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:20:38,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1037408464, now seen corresponding path program 1 times [2022-07-14 02:20:38,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:20:38,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612230861] [2022-07-14 02:20:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 02:20:38,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:20:38,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:20:38,129 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 02:20:38,133 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 02:20:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 02:20:39,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2864 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 02:20:39,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:20:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-07-14 02:20:40,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 02:20:40,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:20:40,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612230861] [2022-07-14 02:20:40,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612230861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 02:20:40,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 02:20:40,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 02:20:40,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521918002] [2022-07-14 02:20:40,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 02:20:40,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 02:20:40,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:20:40,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 02:20:40,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 02:20:40,125 INFO L87 Difference]: Start difference. First operand has 1732 states, 1231 states have (on average 1.3899268887083671) internal successors, (1711), 1254 states have internal predecessors, (1711), 435 states have call successors, (435), 65 states have call predecessors, (435), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-14 02:20:40,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:20:40,816 INFO L93 Difference]: Finished difference Result 3465 states and 5248 transitions. [2022-07-14 02:20:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 02:20:40,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 161 [2022-07-14 02:20:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:20:40,842 INFO L225 Difference]: With dead ends: 3465 [2022-07-14 02:20:40,843 INFO L226 Difference]: Without dead ends: 1718 [2022-07-14 02:20:40,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 02:20:40,865 INFO L413 NwaCegarLoop]: 2562 mSDtfsCounter, 6 mSDsluCounter, 10224 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12786 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 02:20:40,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 12786 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 02:20:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2022-07-14 02:20:41,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1718. [2022-07-14 02:20:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1224 states have (on average 1.3848039215686274) internal successors, (1695), 1240 states have internal predecessors, (1695), 430 states have call successors, (430), 64 states have call predecessors, (430), 63 states have return successors, (429), 423 states have call predecessors, (429), 429 states have call successors, (429) [2022-07-14 02:20:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2554 transitions. [2022-07-14 02:20:41,032 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2554 transitions. Word has length 161 [2022-07-14 02:20:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:20:41,034 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 2554 transitions. [2022-07-14 02:20:41,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-14 02:20:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2554 transitions. [2022-07-14 02:20:41,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-14 02:20:41,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:20:41,044 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 02:20:41,167 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 02:20:41,249 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 02:20:41,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:20:41,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:20:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1849684249, now seen corresponding path program 1 times [2022-07-14 02:20:41,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:20:41,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933660517] [2022-07-14 02:20:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 02:20:41,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:20:41,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:20:41,255 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 02:20:41,258 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 02:20:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 02:20:42,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 02:20:42,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:20:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-07-14 02:20:43,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 02:20:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-14 02:20:44,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:20:44,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933660517] [2022-07-14 02:20:44,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933660517] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 02:20:44,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 02:20:44,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-14 02:20:44,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843467560] [2022-07-14 02:20:44,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 02:20:44,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 02:20:44,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:20:44,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 02:20:44,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-14 02:20:44,138 INFO L87 Difference]: Start difference. First operand 1718 states and 2554 transitions. Second operand has 11 states, 9 states have (on average 7.111111111111111) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-14 02:20:45,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:20:45,244 INFO L93 Difference]: Finished difference Result 3435 states and 5115 transitions. [2022-07-14 02:20:45,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 02:20:45,245 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.111111111111111) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 168 [2022-07-14 02:20:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:20:45,257 INFO L225 Difference]: With dead ends: 3435 [2022-07-14 02:20:45,258 INFO L226 Difference]: Without dead ends: 1724 [2022-07-14 02:20:45,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-14 02:20:45,266 INFO L413 NwaCegarLoop]: 2544 mSDtfsCounter, 12 mSDsluCounter, 20305 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 22849 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-14 02:20:45,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 22849 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-14 02:20:45,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2022-07-14 02:20:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2022-07-14 02:20:45,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1228 states have (on average 1.3835504885993486) internal successors, (1699), 1244 states have internal predecessors, (1699), 431 states have call successors, (431), 65 states have call predecessors, (431), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) [2022-07-14 02:20:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2560 transitions. [2022-07-14 02:20:45,404 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2560 transitions. Word has length 168 [2022-07-14 02:20:45,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:20:45,405 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2560 transitions. [2022-07-14 02:20:45,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.111111111111111) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-14 02:20:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2560 transitions. [2022-07-14 02:20:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-14 02:20:45,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:20:45,408 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 02:20:45,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-14 02:20:45,619 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 02:20:45,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:20:45,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:20:45,621 INFO L85 PathProgramCache]: Analyzing trace with hash 372913904, now seen corresponding path program 2 times [2022-07-14 02:20:45,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:20:45,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048227098] [2022-07-14 02:20:45,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 02:20:45,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:20:45,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:20:45,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 02:20:45,642 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 02:20:46,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 02:20:46,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 02:20:46,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 02:20:46,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:20:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-07-14 02:20:46,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 02:20:46,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:20:46,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048227098] [2022-07-14 02:20:46,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048227098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 02:20:46,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 02:20:46,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 02:20:46,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656166190] [2022-07-14 02:20:46,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 02:20:46,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 02:20:46,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:20:46,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 02:20:46,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 02:20:46,945 INFO L87 Difference]: Start difference. First operand 1724 states and 2560 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-14 02:20:49,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:20:49,002 INFO L93 Difference]: Finished difference Result 3552 states and 5258 transitions. [2022-07-14 02:20:49,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 02:20:49,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 175 [2022-07-14 02:20:49,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:20:49,013 INFO L225 Difference]: With dead ends: 3552 [2022-07-14 02:20:49,014 INFO L226 Difference]: Without dead ends: 1865 [2022-07-14 02:20:49,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 02:20:49,023 INFO L413 NwaCegarLoop]: 2571 mSDtfsCounter, 218 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 4871 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-14 02:20:49,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 4871 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-14 02:20:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2022-07-14 02:20:49,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1862. [2022-07-14 02:20:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1332 states have (on average 1.3843843843843844) internal successors, (1844), 1357 states have internal predecessors, (1844), 450 states have call successors, (450), 80 states have call predecessors, (450), 79 states have return successors, (449), 437 states have call predecessors, (449), 449 states have call successors, (449) [2022-07-14 02:20:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2743 transitions. [2022-07-14 02:20:49,086 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2743 transitions. Word has length 175 [2022-07-14 02:20:49,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:20:49,088 INFO L495 AbstractCegarLoop]: Abstraction has 1862 states and 2743 transitions. [2022-07-14 02:20:49,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-14 02:20:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2743 transitions. [2022-07-14 02:20:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-14 02:20:49,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:20:49,090 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 02:20:49,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-14 02:20:49,303 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 02:20:49,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:20:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:20:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1349972621, now seen corresponding path program 1 times [2022-07-14 02:20:49,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:20:49,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032813368] [2022-07-14 02:20:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 02:20:49,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:20:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:20:49,315 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 02:20:49,316 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 02:20:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 02:20:51,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 3222 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 02:20:51,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:20:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 102 proven. 3 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-07-14 02:20:51,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 02:20:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-07-14 02:20:52,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:20:52,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032813368] [2022-07-14 02:20:52,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032813368] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 02:20:52,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 02:20:52,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-14 02:20:52,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270653537] [2022-07-14 02:20:52,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 02:20:52,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 02:20:52,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:20:52,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 02:20:52,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-14 02:20:52,931 INFO L87 Difference]: Start difference. First operand 1862 states and 2743 transitions. Second operand has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-14 02:20:54,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:20:54,250 INFO L93 Difference]: Finished difference Result 3710 states and 5480 transitions. [2022-07-14 02:20:54,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 02:20:54,251 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 184 [2022-07-14 02:20:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:20:54,262 INFO L225 Difference]: With dead ends: 3710 [2022-07-14 02:20:54,262 INFO L226 Difference]: Without dead ends: 1864 [2022-07-14 02:20:54,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-14 02:20:54,274 INFO L413 NwaCegarLoop]: 2544 mSDtfsCounter, 11 mSDsluCounter, 20305 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22849 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-14 02:20:54,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 22849 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-14 02:20:54,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-07-14 02:20:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1864. [2022-07-14 02:20:54,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1334 states have (on average 1.383808095952024) internal successors, (1846), 1359 states have internal predecessors, (1846), 450 states have call successors, (450), 80 states have call predecessors, (450), 79 states have return successors, (449), 437 states have call predecessors, (449), 449 states have call successors, (449) [2022-07-14 02:20:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2745 transitions. [2022-07-14 02:20:54,387 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2745 transitions. Word has length 184 [2022-07-14 02:20:54,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:20:54,387 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 2745 transitions. [2022-07-14 02:20:54,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-14 02:20:54,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2745 transitions. [2022-07-14 02:20:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-14 02:20:54,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:20:54,390 INFO L195 NwaCegarLoop]: trace histogram [21, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 02:20:54,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-14 02:20:54,611 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 02:20:54,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:20:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:20:54,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1932572028, now seen corresponding path program 2 times [2022-07-14 02:20:54,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:20:54,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738445425] [2022-07-14 02:20:54,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 02:20:54,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:20:54,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:20:54,618 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 02:20:54,620 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 02:20:55,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 02:20:55,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 02:20:56,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 02:20:56,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:20:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2022-07-14 02:20:56,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 02:20:56,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:20:56,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738445425] [2022-07-14 02:20:56,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738445425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 02:20:56,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 02:20:56,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 02:20:56,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519505718] [2022-07-14 02:20:56,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 02:20:56,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 02:20:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:20:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 02:20:56,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 02:20:56,145 INFO L87 Difference]: Start difference. First operand 1864 states and 2745 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-14 02:20:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:20:56,618 INFO L93 Difference]: Finished difference Result 5464 states and 8164 transitions. [2022-07-14 02:20:56,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 02:20:56,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 191 [2022-07-14 02:20:56,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:20:56,652 INFO L225 Difference]: With dead ends: 5464 [2022-07-14 02:20:56,653 INFO L226 Difference]: Without dead ends: 3658 [2022-07-14 02:20:56,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 02:20:56,667 INFO L413 NwaCegarLoop]: 2983 mSDtfsCounter, 2535 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2535 SdHoareTripleChecker+Valid, 5515 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 02:20:56,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2535 Valid, 5515 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 02:20:56,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2022-07-14 02:20:56,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3655. [2022-07-14 02:20:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2622 states have (on average 1.3859649122807018) internal successors, (3634), 2668 states have internal predecessors, (3634), 882 states have call successors, (882), 153 states have call predecessors, (882), 150 states have return successors, (919), 856 states have call predecessors, (919), 881 states have call successors, (919) [2022-07-14 02:20:56,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5435 transitions. [2022-07-14 02:20:56,858 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5435 transitions. Word has length 191 [2022-07-14 02:20:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:20:56,859 INFO L495 AbstractCegarLoop]: Abstraction has 3655 states and 5435 transitions. [2022-07-14 02:20:56,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-14 02:20:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5435 transitions. [2022-07-14 02:20:56,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-14 02:20:56,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:20:56,862 INFO L195 NwaCegarLoop]: trace histogram [21, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 02:20:56,915 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 02:20:57,067 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 02:20:57,068 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:20:57,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:20:57,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1191665847, now seen corresponding path program 1 times [2022-07-14 02:20:57,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:20:57,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886120896] [2022-07-14 02:20:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 02:20:57,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:20:57,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:20:57,080 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 02:20:57,115 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 02:20:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 02:20:59,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 3301 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 02:20:59,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:20:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 144 proven. 6 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-07-14 02:20:59,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 02:21:01,202 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-07-14 02:21:01,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:21:01,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886120896] [2022-07-14 02:21:01,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886120896] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 02:21:01,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 02:21:01,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-14 02:21:01,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381641543] [2022-07-14 02:21:01,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 02:21:01,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 02:21:01,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:21:01,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 02:21:01,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-14 02:21:01,204 INFO L87 Difference]: Start difference. First operand 3655 states and 5435 transitions. Second operand has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 15 states have internal predecessors, (77), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-14 02:21:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:21:02,658 INFO L93 Difference]: Finished difference Result 7299 states and 10872 transitions. [2022-07-14 02:21:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 02:21:02,659 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 15 states have internal predecessors, (77), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 192 [2022-07-14 02:21:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:21:02,682 INFO L225 Difference]: With dead ends: 7299 [2022-07-14 02:21:02,682 INFO L226 Difference]: Without dead ends: 3658 [2022-07-14 02:21:02,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-07-14 02:21:02,700 INFO L413 NwaCegarLoop]: 2544 mSDtfsCounter, 12 mSDsluCounter, 20298 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 22842 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-14 02:21:02,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 22842 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-14 02:21:02,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2022-07-14 02:21:02,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3658. [2022-07-14 02:21:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 2625 states have (on average 1.3855238095238096) internal successors, (3637), 2671 states have internal predecessors, (3637), 882 states have call successors, (882), 153 states have call predecessors, (882), 150 states have return successors, (919), 856 states have call predecessors, (919), 881 states have call successors, (919) [2022-07-14 02:21:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 5438 transitions. [2022-07-14 02:21:02,827 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 5438 transitions. Word has length 192 [2022-07-14 02:21:02,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:21:02,827 INFO L495 AbstractCegarLoop]: Abstraction has 3658 states and 5438 transitions. [2022-07-14 02:21:02,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 15 states have internal predecessors, (77), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-14 02:21:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 5438 transitions. [2022-07-14 02:21:02,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-14 02:21:02,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:21:02,831 INFO L195 NwaCegarLoop]: trace histogram [28, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 02:21:02,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-14 02:21:03,047 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 02:21:03,047 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:21:03,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:21:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2045838418, now seen corresponding path program 2 times [2022-07-14 02:21:03,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:21:03,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912638466] [2022-07-14 02:21:03,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 02:21:03,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:21:03,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:21:03,052 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 02:21:03,053 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 02:21:04,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 02:21:04,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 02:21:04,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 02:21:04,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:21:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2022-07-14 02:21:04,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 02:21:04,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:21:04,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912638466] [2022-07-14 02:21:04,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912638466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 02:21:04,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 02:21:04,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 02:21:04,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974363846] [2022-07-14 02:21:04,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 02:21:04,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 02:21:04,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:21:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 02:21:04,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 02:21:04,679 INFO L87 Difference]: Start difference. First operand 3658 states and 5438 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-14 02:21:05,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:21:05,191 INFO L93 Difference]: Finished difference Result 10848 states and 16300 transitions. [2022-07-14 02:21:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 02:21:05,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 199 [2022-07-14 02:21:05,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:21:05,235 INFO L225 Difference]: With dead ends: 10848 [2022-07-14 02:21:05,236 INFO L226 Difference]: Without dead ends: 7249 [2022-07-14 02:21:05,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 02:21:05,255 INFO L413 NwaCegarLoop]: 2971 mSDtfsCounter, 2539 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 5503 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 02:21:05,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2539 Valid, 5503 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 02:21:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7249 states. [2022-07-14 02:21:05,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7249 to 7246. [2022-07-14 02:21:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7246 states, 5207 states have (on average 1.3862108699827156) internal successors, (7218), 5295 states have internal predecessors, (7218), 1744 states have call successors, (1744), 299 states have call predecessors, (1744), 294 states have return successors, (1896), 1697 states have call predecessors, (1896), 1743 states have call successors, (1896) [2022-07-14 02:21:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7246 states to 7246 states and 10858 transitions. [2022-07-14 02:21:05,584 INFO L78 Accepts]: Start accepts. Automaton has 7246 states and 10858 transitions. Word has length 199 [2022-07-14 02:21:05,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:21:05,585 INFO L495 AbstractCegarLoop]: Abstraction has 7246 states and 10858 transitions. [2022-07-14 02:21:05,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-14 02:21:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 7246 states and 10858 transitions. [2022-07-14 02:21:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-14 02:21:05,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:21:05,588 INFO L195 NwaCegarLoop]: trace histogram [28, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 02:21:05,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-14 02:21:05,807 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 02:21:05,808 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:21:05,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:21:05,808 INFO L85 PathProgramCache]: Analyzing trace with hash 837373547, now seen corresponding path program 1 times [2022-07-14 02:21:05,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:21:05,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918582696] [2022-07-14 02:21:05,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 02:21:05,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:21:05,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:21:05,813 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 02:21:05,814 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 02:21:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 02:21:08,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 3380 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 02:21:08,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:21:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 489 proven. 10 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2022-07-14 02:21:09,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 02:21:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 93 proven. 103 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-07-14 02:21:11,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:21:11,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918582696] [2022-07-14 02:21:11,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918582696] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 02:21:11,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 02:21:11,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-14 02:21:11,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095095821] [2022-07-14 02:21:11,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 02:21:11,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-14 02:21:11,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:21:11,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-14 02:21:11,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-14 02:21:11,368 INFO L87 Difference]: Start difference. First operand 7246 states and 10858 transitions. Second operand has 17 states, 15 states have (on average 5.333333333333333) internal successors, (80), 17 states have internal predecessors, (80), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-14 02:21:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:21:13,218 INFO L93 Difference]: Finished difference Result 14490 states and 21739 transitions. [2022-07-14 02:21:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-14 02:21:13,219 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.333333333333333) internal successors, (80), 17 states have internal predecessors, (80), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 200 [2022-07-14 02:21:13,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:21:13,280 INFO L225 Difference]: With dead ends: 14490 [2022-07-14 02:21:13,280 INFO L226 Difference]: Without dead ends: 7259 [2022-07-14 02:21:13,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-07-14 02:21:13,308 INFO L413 NwaCegarLoop]: 2543 mSDtfsCounter, 24 mSDsluCounter, 22837 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 25380 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-14 02:21:13,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 25380 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-14 02:21:13,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7259 states. [2022-07-14 02:21:13,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7259 to 7259. [2022-07-14 02:21:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7259 states, 5219 states have (on average 1.3855144663728685) internal successors, (7231), 5307 states have internal predecessors, (7231), 1744 states have call successors, (1744), 300 states have call predecessors, (1744), 295 states have return successors, (1896), 1697 states have call predecessors, (1896), 1743 states have call successors, (1896) [2022-07-14 02:21:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7259 states to 7259 states and 10871 transitions. [2022-07-14 02:21:13,587 INFO L78 Accepts]: Start accepts. Automaton has 7259 states and 10871 transitions. Word has length 200 [2022-07-14 02:21:13,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:21:13,590 INFO L495 AbstractCegarLoop]: Abstraction has 7259 states and 10871 transitions. [2022-07-14 02:21:13,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.333333333333333) internal successors, (80), 17 states have internal predecessors, (80), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-14 02:21:13,591 INFO L276 IsEmpty]: Start isEmpty. Operand 7259 states and 10871 transitions. [2022-07-14 02:21:13,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-14 02:21:13,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:21:13,594 INFO L195 NwaCegarLoop]: trace histogram [30, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 02:21:13,670 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 02:21:13,815 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 02:21:13,816 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:21:13,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:21:13,816 INFO L85 PathProgramCache]: Analyzing trace with hash 505948155, now seen corresponding path program 2 times [2022-07-14 02:21:13,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:21:13,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446079577] [2022-07-14 02:21:13,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 02:21:13,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:21:13,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:21:13,820 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 02:21:13,822 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 02:21:15,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 02:21:15,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 02:21:15,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 02:21:15,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:21:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2022-07-14 02:21:15,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 02:21:15,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:21:15,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446079577] [2022-07-14 02:21:15,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446079577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 02:21:15,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 02:21:15,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 02:21:15,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400224050] [2022-07-14 02:21:15,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 02:21:15,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 02:21:15,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:21:15,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 02:21:15,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 02:21:15,384 INFO L87 Difference]: Start difference. First operand 7259 states and 10871 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-14 02:21:15,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:21:15,965 INFO L93 Difference]: Finished difference Result 21631 states and 32681 transitions. [2022-07-14 02:21:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 02:21:15,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 202 [2022-07-14 02:21:15,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:21:16,093 INFO L225 Difference]: With dead ends: 21631 [2022-07-14 02:21:16,093 INFO L226 Difference]: Without dead ends: 14440 [2022-07-14 02:21:16,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 02:21:16,154 INFO L413 NwaCegarLoop]: 2971 mSDtfsCounter, 2540 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 5503 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 02:21:16,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2540 Valid, 5503 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 02:21:16,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14440 states. [2022-07-14 02:21:16,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14440 to 14437. [2022-07-14 02:21:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14437 states, 10389 states have (on average 1.3856001540090481) internal successors, (14395), 10557 states have internal predecessors, (14395), 3464 states have call successors, (3464), 592 states have call predecessors, (3464), 583 states have return successors, (3914), 3379 states have call predecessors, (3914), 3463 states have call successors, (3914) [2022-07-14 02:21:17,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14437 states to 14437 states and 21773 transitions. [2022-07-14 02:21:17,028 INFO L78 Accepts]: Start accepts. Automaton has 14437 states and 21773 transitions. Word has length 202 [2022-07-14 02:21:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:21:17,029 INFO L495 AbstractCegarLoop]: Abstraction has 14437 states and 21773 transitions. [2022-07-14 02:21:17,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-14 02:21:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 14437 states and 21773 transitions. [2022-07-14 02:21:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-14 02:21:17,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:21:17,033 INFO L195 NwaCegarLoop]: trace histogram [30, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:17,106 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 02:21:17,255 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 02:21:17,255 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:21:17,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:21:17,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1136803046, now seen corresponding path program 1 times [2022-07-14 02:21:17,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:21:17,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576824640] [2022-07-14 02:21:17,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 02:21:17,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:21:17,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:21:17,260 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 02:21:17,261 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 02:21:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 02:21:20,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 3404 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 02:21:20,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:21:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 540 proven. 15 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-14 02:21:20,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 02:21:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 108 proven. 129 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2022-07-14 02:21:23,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:21:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576824640] [2022-07-14 02:21:23,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576824640] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 02:21:23,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 02:21:23,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-14 02:21:23,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375963954] [2022-07-14 02:21:23,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 02:21:23,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-14 02:21:23,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:21:23,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-14 02:21:23,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-07-14 02:21:23,414 INFO L87 Difference]: Start difference. First operand 14437 states and 21773 transitions. Second operand has 19 states, 17 states have (on average 4.882352941176471) internal successors, (83), 19 states have internal predecessors, (83), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-14 02:21:25,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:21:25,858 INFO L93 Difference]: Finished difference Result 28872 states and 43579 transitions. [2022-07-14 02:21:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-14 02:21:25,859 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.882352941176471) internal successors, (83), 19 states have internal predecessors, (83), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 203 [2022-07-14 02:21:25,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:21:25,932 INFO L225 Difference]: With dead ends: 28872 [2022-07-14 02:21:25,932 INFO L226 Difference]: Without dead ends: 14446 [2022-07-14 02:21:25,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-07-14 02:21:25,975 INFO L413 NwaCegarLoop]: 2543 mSDtfsCounter, 26 mSDsluCounter, 25391 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 27934 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-14 02:21:25,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 27934 Invalid, 266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-14 02:21:25,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14446 states. [2022-07-14 02:21:26,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14446 to 14446. [2022-07-14 02:21:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14446 states, 10398 states have (on average 1.3852663973841124) internal successors, (14404), 10566 states have internal predecessors, (14404), 3464 states have call successors, (3464), 592 states have call predecessors, (3464), 583 states have return successors, (3914), 3379 states have call predecessors, (3914), 3463 states have call successors, (3914) [2022-07-14 02:21:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14446 states to 14446 states and 21782 transitions. [2022-07-14 02:21:26,600 INFO L78 Accepts]: Start accepts. Automaton has 14446 states and 21782 transitions. Word has length 203 [2022-07-14 02:21:26,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:21:26,601 INFO L495 AbstractCegarLoop]: Abstraction has 14446 states and 21782 transitions. [2022-07-14 02:21:26,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.882352941176471) internal successors, (83), 19 states have internal predecessors, (83), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-14 02:21:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand 14446 states and 21782 transitions. [2022-07-14 02:21:26,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-14 02:21:26,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:21:26,604 INFO L195 NwaCegarLoop]: trace histogram [32, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:26,702 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 02:21:26,831 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 02:21:26,832 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:21:26,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:21:26,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1697725334, now seen corresponding path program 2 times [2022-07-14 02:21:26,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:21:26,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212809313] [2022-07-14 02:21:26,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 02:21:26,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:21:26,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:21:26,838 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 02:21:26,844 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 02:21:28,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 02:21:28,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 02:21:28,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 02:21:28,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:21:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2022-07-14 02:21:28,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 02:21:28,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:21:28,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212809313] [2022-07-14 02:21:28,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212809313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 02:21:28,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 02:21:28,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 02:21:28,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687104315] [2022-07-14 02:21:28,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 02:21:28,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 02:21:28,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:21:28,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 02:21:28,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 02:21:28,554 INFO L87 Difference]: Start difference. First operand 14446 states and 21782 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-14 02:21:29,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:21:29,628 INFO L93 Difference]: Finished difference Result 43119 states and 65523 transitions. [2022-07-14 02:21:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 02:21:29,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 205 [2022-07-14 02:21:29,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:21:29,786 INFO L225 Difference]: With dead ends: 43119 [2022-07-14 02:21:29,787 INFO L226 Difference]: Without dead ends: 28742 [2022-07-14 02:21:29,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 02:21:29,845 INFO L413 NwaCegarLoop]: 2970 mSDtfsCounter, 2541 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2541 SdHoareTripleChecker+Valid, 5502 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 02:21:29,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2541 Valid, 5502 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 02:21:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28742 states. [2022-07-14 02:21:30,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28742 to 28739. [2022-07-14 02:21:30,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28739 states, 20704 states have (on average 1.3851912673879443) internal successors, (28679), 21024 states have internal predecessors, (28679), 6884 states have call successors, (6884), 1166 states have call predecessors, (6884), 1150 states have return successors, (8054), 6730 states have call predecessors, (8054), 6883 states have call successors, (8054) [2022-07-14 02:21:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28739 states to 28739 states and 43617 transitions. [2022-07-14 02:21:31,226 INFO L78 Accepts]: Start accepts. Automaton has 28739 states and 43617 transitions. Word has length 205 [2022-07-14 02:21:31,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:21:31,227 INFO L495 AbstractCegarLoop]: Abstraction has 28739 states and 43617 transitions. [2022-07-14 02:21:31,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-14 02:21:31,227 INFO L276 IsEmpty]: Start isEmpty. Operand 28739 states and 43617 transitions. [2022-07-14 02:21:31,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-14 02:21:31,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:21:31,230 INFO L195 NwaCegarLoop]: trace histogram [32, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-07-14 02:21:31,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-14 02:21:31,451 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 02:21:31,451 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:21:31,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:21:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash 317004011, now seen corresponding path program 1 times [2022-07-14 02:21:31,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:21:31,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824930373] [2022-07-14 02:21:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 02:21:31,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:21:31,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:21:31,456 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 02:21:31,458 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 02:21:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 02:21:34,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 3436 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-14 02:21:34,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:21:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 817 proven. 21 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-07-14 02:21:35,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 02:21:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 123 proven. 158 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2022-07-14 02:21:38,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:21:38,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824930373] [2022-07-14 02:21:38,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824930373] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 02:21:38,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 02:21:38,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-14 02:21:38,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927945217] [2022-07-14 02:21:38,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 02:21:38,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-14 02:21:38,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:21:38,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-14 02:21:38,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-14 02:21:38,175 INFO L87 Difference]: Start difference. First operand 28739 states and 43617 transitions. Second operand has 21 states, 19 states have (on average 5.105263157894737) internal successors, (97), 21 states have internal predecessors, (97), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-14 02:21:41,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:21:41,361 INFO L93 Difference]: Finished difference Result 57500 states and 87331 transitions. [2022-07-14 02:21:41,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-14 02:21:41,362 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.105263157894737) internal successors, (97), 21 states have internal predecessors, (97), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 269 [2022-07-14 02:21:41,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:21:41,527 INFO L225 Difference]: With dead ends: 57500 [2022-07-14 02:21:41,527 INFO L226 Difference]: Without dead ends: 28756 [2022-07-14 02:21:41,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2022-07-14 02:21:41,726 INFO L413 NwaCegarLoop]: 2543 mSDtfsCounter, 28 mSDsluCounter, 33004 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 35547 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-14 02:21:41,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 35547 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-14 02:21:41,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28756 states. [2022-07-14 02:21:42,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28756 to 28756. [2022-07-14 02:21:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28756 states, 20721 states have (on average 1.384875247333623) internal successors, (28696), 21041 states have internal predecessors, (28696), 6884 states have call successors, (6884), 1166 states have call predecessors, (6884), 1150 states have return successors, (8054), 6730 states have call predecessors, (8054), 6883 states have call successors, (8054) [2022-07-14 02:21:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28756 states to 28756 states and 43634 transitions. [2022-07-14 02:21:42,707 INFO L78 Accepts]: Start accepts. Automaton has 28756 states and 43634 transitions. Word has length 269 [2022-07-14 02:21:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:21:42,707 INFO L495 AbstractCegarLoop]: Abstraction has 28756 states and 43634 transitions. [2022-07-14 02:21:42,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.105263157894737) internal successors, (97), 21 states have internal predecessors, (97), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-14 02:21:42,708 INFO L276 IsEmpty]: Start isEmpty. Operand 28756 states and 43634 transitions. [2022-07-14 02:21:42,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-14 02:21:42,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 02:21:42,710 INFO L195 NwaCegarLoop]: trace histogram [34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-07-14 02:21:42,762 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 02:21:42,935 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 02:21:42,936 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 02:21:42,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 02:21:42,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1017701029, now seen corresponding path program 2 times [2022-07-14 02:21:42,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 02:21:42,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860910808] [2022-07-14 02:21:42,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 02:21:42,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 02:21:42,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 02:21:42,948 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 02:21:42,950 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 02:21:44,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 02:21:44,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 02:21:44,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 02:21:44,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 02:21:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2022-07-14 02:21:46,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 02:21:46,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 02:21:46,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860910808] [2022-07-14 02:21:46,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860910808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 02:21:46,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 02:21:46,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 02:21:46,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554779842] [2022-07-14 02:21:46,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 02:21:46,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 02:21:46,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 02:21:46,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 02:21:46,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 02:21:46,736 INFO L87 Difference]: Start difference. First operand 28756 states and 43634 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-14 02:21:47,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 02:21:47,109 INFO L93 Difference]: Finished difference Result 28804 states and 43666 transitions. [2022-07-14 02:21:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 02:21:47,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 271 [2022-07-14 02:21:47,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 02:21:47,113 INFO L225 Difference]: With dead ends: 28804 [2022-07-14 02:21:47,113 INFO L226 Difference]: Without dead ends: 0 [2022-07-14 02:21:47,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 02:21:47,181 INFO L413 NwaCegarLoop]: 2549 mSDtfsCounter, 2420 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 02:21:47,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2420 Valid, 2585 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 02:21:47,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-14 02:21:47,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-14 02:21:47,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 02:21:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-14 02:21:47,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 271 [2022-07-14 02:21:47,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 02:21:47,188 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 02:21:47,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-14 02:21:47,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-14 02:21:47,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-14 02:21:47,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-14 02:21:47,218 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 02:21:47,407 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 02:21:47,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.