./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--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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--net--ethernet--qlogic--qla3xxx.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 bdcb32e90fffda272ef4414cda96d9fa59a53e22555da4af86a588968a9c4dd7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:50:04,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:50:04,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:50:04,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:50:04,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:50:04,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:50:04,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:50:04,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:50:04,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:50:04,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:50:04,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:50:04,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:50:04,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:50:04,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:50:04,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:50:04,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:50:04,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:50:04,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:50:04,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:50:04,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:50:04,174 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:50:04,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:50:04,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:50:04,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:50:04,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:50:04,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:50:04,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:50:04,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:50:04,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:50:04,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:50:04,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:50:04,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:50:04,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:50:04,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:50:04,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:50:04,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:50:04,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:50:04,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:50:04,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:50:04,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:50:04,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:50:04,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:50:04,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 12:50:04,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:50:04,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:50:04,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:50:04,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:50:04,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:50:04,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:50:04,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:50:04,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:50:04,241 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:50:04,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:50:04,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 12:50:04,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:50:04,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:50:04,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:50:04,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:50:04,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:50:04,243 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:50:04,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:50:04,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:50:04,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:50:04,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:50:04,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:50:04,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:50:04,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:50:04,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:50:04,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 12:50:04,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 12:50:04,245 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:50:04,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:50:04,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:50:04,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdcb32e90fffda272ef4414cda96d9fa59a53e22555da4af86a588968a9c4dd7 [2022-07-21 12:50:04,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:50:04,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:50:04,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:50:04,584 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:50:04,585 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:50:04,586 INFO L432 ainManager$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--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2022-07-21 12:50:04,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607a99fe5/f2a73eb399964b48841dc6bd0b78824d/FLAG650f4f2fa [2022-07-21 12:50:05,497 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:50:05,498 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--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2022-07-21 12:50:05,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607a99fe5/f2a73eb399964b48841dc6bd0b78824d/FLAG650f4f2fa [2022-07-21 12:50:06,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607a99fe5/f2a73eb399964b48841dc6bd0b78824d [2022-07-21 12:50:06,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:50:06,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:50:06,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:50:06,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:50:06,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:50:06,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:06" (1/1) ... [2022-07-21 12:50:06,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5909ed40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:06, skipping insertion in model container [2022-07-21 12:50:06,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:06" (1/1) ... [2022-07-21 12:50:06,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:50:06,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:50:08,987 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--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i[355549,355562] [2022-07-21 12:50:09,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:50:09,129 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:50:09,388 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: reg = (unsigned int )((u16 )((int )reg >> 8)) & 3U [7817] 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:2268) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:310) 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) [2022-07-21 12:50:09,394 INFO L158 Benchmark]: Toolchain (without parser) took 3359.50ms. Allocated memory was 54.5MB in the beginning and 111.1MB in the end (delta: 56.6MB). Free memory was 29.1MB in the beginning and 42.6MB in the end (delta: -13.5MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2022-07-21 12:50:09,395 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 54.5MB. Free memory was 35.8MB in the beginning and 35.8MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 12:50:09,397 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3357.87ms. Allocated memory was 54.5MB in the beginning and 111.1MB in the end (delta: 56.6MB). Free memory was 28.9MB in the beginning and 42.6MB in the end (delta: -13.7MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. [2022-07-21 12:50:09,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 54.5MB. Free memory was 35.8MB in the beginning and 35.8MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3357.87ms. Allocated memory was 54.5MB in the beginning and 111.1MB in the end (delta: 56.6MB). Free memory was 28.9MB in the beginning and 42.6MB in the end (delta: -13.7MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: reg = (unsigned int )((u16 )((int )reg >> 8)) & 3U [7817] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: reg = (unsigned int )((u16 )((int )reg >> 8)) & 3U [7817]: 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--net--ethernet--qlogic--qla3xxx.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 bdcb32e90fffda272ef4414cda96d9fa59a53e22555da4af86a588968a9c4dd7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:50:11,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:50:11,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:50:11,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:50:11,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:50:11,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:50:11,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:50:11,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:50:11,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:50:11,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:50:11,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:50:11,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:50:11,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:50:11,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:50:11,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:50:11,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:50:11,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:50:11,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:50:11,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:50:11,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:50:11,264 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:50:11,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:50:11,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:50:11,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:50:11,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:50:11,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:50:11,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:50:11,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:50:11,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:50:11,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:50:11,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:50:11,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:50:11,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:50:11,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:50:11,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:50:11,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:50:11,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:50:11,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:50:11,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:50:11,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:50:11,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:50:11,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:50:11,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 12:50:11,320 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:50:11,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:50:11,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:50:11,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:50:11,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:50:11,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:50:11,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:50:11,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:50:11,323 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:50:11,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:50:11,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:50:11,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:50:11,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:50:11,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:50:11,325 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 12:50:11,325 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 12:50:11,326 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 12:50:11,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:50:11,326 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:50:11,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:50:11,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:50:11,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:50:11,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:50:11,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:50:11,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:50:11,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:50:11,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:50:11,328 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 12:50:11,328 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 12:50:11,328 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:50:11,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:50:11,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:50:11,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 12:50:11,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdcb32e90fffda272ef4414cda96d9fa59a53e22555da4af86a588968a9c4dd7 [2022-07-21 12:50:11,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:50:11,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:50:11,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:50:11,674 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:50:11,675 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:50:11,676 INFO L432 ainManager$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--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2022-07-21 12:50:11,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0ba26ed/7b1a09f2312649138f7ea4835185cfd7/FLAG47f430917 [2022-07-21 12:50:12,605 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:50:12,606 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--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2022-07-21 12:50:12,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0ba26ed/7b1a09f2312649138f7ea4835185cfd7/FLAG47f430917 [2022-07-21 12:50:13,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0ba26ed/7b1a09f2312649138f7ea4835185cfd7 [2022-07-21 12:50:13,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:50:13,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:50:13,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:50:13,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:50:13,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:50:13,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:13" (1/1) ... [2022-07-21 12:50:13,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da3f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:13, skipping insertion in model container [2022-07-21 12:50:13,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:13" (1/1) ... [2022-07-21 12:50:13,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:50:13,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:50:15,911 WARN L570 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-07-21 12:50:15,940 WARN L570 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-07-21 12:50:16,209 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--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i[355549,355562] [2022-07-21 12:50:16,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:50:16,354 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 12:50:16,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:50:16,786 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--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i[355549,355562] [2022-07-21 12:50:16,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:50:16,834 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:50:17,196 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--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i[355549,355562] [2022-07-21 12:50:17,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:50:17,385 INFO L208 MainTranslator]: Completed translation [2022-07-21 12:50:17,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:17 WrapperNode [2022-07-21 12:50:17,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 12:50:17,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 12:50:17,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 12:50:17,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 12:50:17,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:17" (1/1) ... [2022-07-21 12:50:17,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:17" (1/1) ... [2022-07-21 12:50:17,720 INFO L137 Inliner]: procedures = 424, calls = 2551, calls flagged for inlining = 208, calls inlined = 189, statements flattened = 5544 [2022-07-21 12:50:17,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 12:50:17,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 12:50:17,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 12:50:17,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 12:50:17,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:17" (1/1) ... [2022-07-21 12:50:17,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:17" (1/1) ... [2022-07-21 12:50:17,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:17" (1/1) ... [2022-07-21 12:50:17,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:17" (1/1) ... [2022-07-21 12:50:17,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:17" (1/1) ... [2022-07-21 12:50:17,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:17" (1/1) ... [2022-07-21 12:50:17,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:17" (1/1) ... [2022-07-21 12:50:18,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 12:50:18,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 12:50:18,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 12:50:18,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 12:50:18,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:17" (1/1) ... [2022-07-21 12:50:18,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:50:18,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:50:18,065 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) [2022-07-21 12:50:18,078 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 [2022-07-21 12:50:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_link_speed [2022-07-21 12:50:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_link_speed [2022-07-21 12:50:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-07-21 12:50:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-07-21 12:50:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 12:50:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 12:50:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-07-21 12:50:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-07-21 12:50:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_state_machine_work [2022-07-21 12:50:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_state_machine_work [2022-07-21 12:50:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-07-21 12:50:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-07-21 12:50:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-21 12:50:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-21 12:50:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 12:50:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 12:50:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-07-21 12:50:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-07-21 12:50:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-07-21 12:50:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-07-21 12:50:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure ql_this_adapter_controls_port [2022-07-21 12:50:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_this_adapter_controls_port [2022-07-21 12:50:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-07-21 12:50:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-07-21 12:50:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_interrupts [2022-07-21 12:50:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_interrupts [2022-07-21 12:50:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-07-21 12:50:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-07-21 12:50:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-21 12:50:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-21 12:50:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg_l [2022-07-21 12:50:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg_l [2022-07-21 12:50:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_send_free_list [2022-07-21 12:50:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_send_free_list [2022-07-21 12:50:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-07-21 12:50:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-07-21 12:50:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 12:50:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 12:50:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2022-07-21 12:50:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2022-07-21 12:50:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_set_mac_address [2022-07-21 12:50:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_set_mac_address [2022-07-21 12:50:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cycle_adapter [2022-07-21 12:50:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cycle_adapter [2022-07-21 12:50:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mac_cfg_soft_reset [2022-07-21 12:50:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mac_cfg_soft_reset [2022-07-21 12:50:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-21 12:50:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-21 12:50:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-07-21 12:50:18,118 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-07-21 12:50:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-21 12:50:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-21 12:50:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_disable_scan_mode [2022-07-21 12:50:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_disable_scan_mode [2022-07-21 12:50:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 12:50:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 12:50:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-07-21 12:50:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-07-21 12:50:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 12:50:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-07-21 12:50:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-07-21 12:50:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-21 12:50:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 12:50:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 12:50:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg_l [2022-07-21 12:50:18,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg_l [2022-07-21 12:50:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 12:50:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2022-07-21 12:50:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2022-07-21 12:50:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-07-21 12:50:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-07-21 12:50:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-21 12:50:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-21 12:50:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-07-21 12:50:18,123 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-07-21 12:50:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-21 12:50:18,123 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-21 12:50:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 12:50:18,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 12:50:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_5 [2022-07-21 12:50:18,124 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_5 [2022-07-21 12:50:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page1_reg [2022-07-21 12:50:18,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page1_reg [2022-07-21 12:50:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2022-07-21 12:50:18,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2022-07-21 12:50:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-21 12:50:18,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-21 12:50:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 12:50:18,126 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 12:50:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-21 12:50:18,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-21 12:50:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2022-07-21 12:50:18,126 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2022-07-21 12:50:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-07-21 12:50:18,126 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-07-21 12:50:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_register_page [2022-07-21 12:50:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_register_page [2022-07-21 12:50:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-07-21 12:50:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-07-21 12:50:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg_ex [2022-07-21 12:50:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg_ex [2022-07-21 12:50:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure ql_phy_init_ex [2022-07-21 12:50:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_phy_init_ex [2022-07-21 12:50:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-21 12:50:18,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-21 12:50:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg_l [2022-07-21 12:50:18,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg_l [2022-07-21 12:50:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg [2022-07-21 12:50:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg [2022-07-21 12:50:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 12:50:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2022-07-21 12:50:18,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2022-07-21 12:50:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page2_reg [2022-07-21 12:50:18,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page2_reg [2022-07-21 12:50:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 12:50:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_5 [2022-07-21 12:50:18,134 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_5 [2022-07-21 12:50:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg [2022-07-21 12:50:18,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg [2022-07-21 12:50:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-21 12:50:18,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-21 12:50:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 12:50:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg [2022-07-21 12:50:18,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg [2022-07-21 12:50:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 12:50:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 12:50:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 12:50:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2022-07-21 12:50:18,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2022-07-21 12:50:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-21 12:50:18,141 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-21 12:50:18,142 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_nvram_reg [2022-07-21 12:50:18,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_nvram_reg [2022-07-21 12:50:18,142 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2022-07-21 12:50:18,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2022-07-21 12:50:18,142 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-07-21 12:50:18,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-07-21 12:50:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-07-21 12:50:18,143 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-07-21 12:50:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_drvr_lock [2022-07-21 12:50:18,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_drvr_lock [2022-07-21 12:50:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-07-21 12:50:18,143 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-07-21 12:50:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_enable_scan_mode [2022-07-21 12:50:18,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_enable_scan_mode [2022-07-21 12:50:18,144 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-07-21 12:50:18,144 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-07-21 12:50:18,144 INFO L130 BoogieDeclarations]: Found specification of procedure ql_tx_timeout_work [2022-07-21 12:50:18,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_tx_timeout_work [2022-07-21 12:50:18,144 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-07-21 12:50:18,144 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-07-21 12:50:18,144 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 12:50:18,144 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 12:50:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 12:50:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 12:50:18,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 12:50:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_mii_ready [2022-07-21 12:50:18,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_mii_ready [2022-07-21 12:50:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 12:50:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-21 12:50:18,145 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-21 12:50:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 12:50:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 12:50:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_large_buffers [2022-07-21 12:50:18,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_large_buffers [2022-07-21 12:50:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 12:50:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 12:50:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 12:50:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 12:50:18,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 12:50:18,147 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-07-21 12:50:18,147 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-07-21 12:50:18,147 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2022-07-21 12:50:18,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2022-07-21 12:50:18,147 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-07-21 12:50:18,147 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-07-21 12:50:18,147 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-07-21 12:50:18,148 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-07-21 12:50:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg [2022-07-21 12:50:18,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg [2022-07-21 12:50:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 12:50:18,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 12:50:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-07-21 12:50:18,149 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-07-21 12:50:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-07-21 12:50:18,149 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-07-21 12:50:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure PHY_Setup [2022-07-21 12:50:18,149 INFO L138 BoogieDeclarations]: Found implementation of procedure PHY_Setup [2022-07-21 12:50:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 12:50:18,150 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 12:50:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_buffer_queues [2022-07-21 12:50:18,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_buffer_queues [2022-07-21 12:50:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 12:50:18,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 12:50:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-21 12:50:18,151 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-21 12:50:18,151 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-07-21 12:50:18,151 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-07-21 12:50:18,151 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-07-21 12:50:18,151 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-07-21 12:50:18,151 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-21 12:50:18,151 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-21 12:50:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 12:50:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-21 12:50:18,152 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-21 12:50:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 12:50:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-21 12:50:18,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-21 12:50:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2022-07-21 12:50:18,152 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2022-07-21 12:50:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 12:50:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 12:50:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 12:50:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 12:50:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 12:50:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2022-07-21 12:50:18,153 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2022-07-21 12:50:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-07-21 12:50:18,154 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-07-21 12:50:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-21 12:50:18,154 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-21 12:50:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-07-21 12:50:18,154 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-07-21 12:50:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page0_reg [2022-07-21 12:50:18,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page0_reg [2022-07-21 12:50:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-21 12:50:18,155 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-21 12:50:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_link_full_dup [2022-07-21 12:50:18,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_link_full_dup [2022-07-21 12:50:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure ql_reset_work [2022-07-21 12:50:18,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_reset_work [2022-07-21 12:50:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-21 12:50:18,156 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-21 12:50:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_tx_timeout [2022-07-21 12:50:18,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_tx_timeout [2022-07-21 12:50:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure ql_supported_modes [2022-07-21 12:50:18,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_supported_modes [2022-07-21 12:50:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-07-21 12:50:18,162 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-07-21 12:50:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 12:50:18,162 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 12:50:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_fiber [2022-07-21 12:50:18,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_fiber [2022-07-21 12:50:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-07-21 12:50:18,162 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-07-21 12:50:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 12:50:18,164 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 12:50:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_net_req_rsp_queues [2022-07-21 12:50:18,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_net_req_rsp_queues [2022-07-21 12:50:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-07-21 12:50:18,164 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-07-21 12:50:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 12:50:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 12:50:18,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 12:50:18,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 12:50:18,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 12:50:18,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 12:50:18,165 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg_ex [2022-07-21 12:50:18,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg_ex [2022-07-21 12:50:18,165 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2022-07-21 12:50:18,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2022-07-21 12:50:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-21 12:50:18,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-21 12:50:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure ql_port_start [2022-07-21 12:50:18,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_port_start [2022-07-21 12:50:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-21 12:50:18,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-21 12:50:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-07-21 12:50:18,167 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-07-21 12:50:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_auto_cfg_status [2022-07-21 12:50:18,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_auto_cfg_status [2022-07-21 12:50:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg [2022-07-21 12:50:18,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg [2022-07-21 12:50:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2022-07-21 12:50:18,167 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2022-07-21 12:50:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-07-21 12:50:18,168 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-07-21 12:50:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-07-21 12:50:18,168 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-07-21 12:50:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-07-21 12:50:18,168 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-07-21 12:50:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-07-21 12:50:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2022-07-21 12:50:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2022-07-21 12:50:19,015 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 12:50:19,018 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 12:50:19,503 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 12:51:03,006 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 12:51:03,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 12:51:03,027 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 12:51:03,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:51:03 BoogieIcfgContainer [2022-07-21 12:51:03,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 12:51:03,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 12:51:03,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 12:51:03,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 12:51:03,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:50:13" (1/3) ... [2022-07-21 12:51:03,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50926465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:51:03, skipping insertion in model container [2022-07-21 12:51:03,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:17" (2/3) ... [2022-07-21 12:51:03,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50926465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:51:03, skipping insertion in model container [2022-07-21 12:51:03,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:51:03" (3/3) ... [2022-07-21 12:51:03,038 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2022-07-21 12:51:03,050 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 12:51:03,051 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 12:51:03,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 12:51:03,144 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@31060e7a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@396c8839 [2022-07-21 12:51:03,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 12:51:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 2286 states, 1533 states have (on average 1.3052837573385518) internal successors, (2001), 1589 states have internal predecessors, (2001), 626 states have call successors, (626), 126 states have call predecessors, (626), 125 states have return successors, (616), 603 states have call predecessors, (616), 616 states have call successors, (616) [2022-07-21 12:51:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-21 12:51:03,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:03,206 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:03,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:03,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:03,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1836044323, now seen corresponding path program 1 times [2022-07-21 12:51:03,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:03,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652519567] [2022-07-21 12:51:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:03,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:03,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:03,239 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) [2022-07-21 12:51:03,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 12:51:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:05,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 2078 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 12:51:05,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-07-21 12:51:05,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:51:05,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:05,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652519567] [2022-07-21 12:51:05,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652519567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:51:05,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:51:05,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:51:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340808190] [2022-07-21 12:51:05,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:51:05,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 12:51:05,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:05,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 12:51:05,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 12:51:05,193 INFO L87 Difference]: Start difference. First operand has 2286 states, 1533 states have (on average 1.3052837573385518) internal successors, (2001), 1589 states have internal predecessors, (2001), 626 states have call successors, (626), 126 states have call predecessors, (626), 125 states have return successors, (616), 603 states have call predecessors, (616), 616 states have call successors, (616) Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 12:51:05,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:05,364 INFO L93 Difference]: Finished difference Result 4567 states and 6529 transitions. [2022-07-21 12:51:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 12:51:05,366 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 211 [2022-07-21 12:51:05,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:05,400 INFO L225 Difference]: With dead ends: 4567 [2022-07-21 12:51:05,400 INFO L226 Difference]: Without dead ends: 2260 [2022-07-21 12:51:05,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 12:51:05,423 INFO L413 NwaCegarLoop]: 3239 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:05,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3239 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:51:05,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-07-21 12:51:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 2260. [2022-07-21 12:51:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 1519 states have (on average 1.2955892034233047) internal successors, (1968), 1563 states have internal predecessors, (1968), 616 states have call successors, (616), 125 states have call predecessors, (616), 124 states have return successors, (615), 602 states have call predecessors, (615), 615 states have call successors, (615) [2022-07-21 12:51:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 3199 transitions. [2022-07-21 12:51:05,617 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 3199 transitions. Word has length 211 [2022-07-21 12:51:05,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:05,618 INFO L495 AbstractCegarLoop]: Abstraction has 2260 states and 3199 transitions. [2022-07-21 12:51:05,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 12:51:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 3199 transitions. [2022-07-21 12:51:05,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-21 12:51:05,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:05,631 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:05,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 12:51:05,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:05,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:05,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:05,848 INFO L85 PathProgramCache]: Analyzing trace with hash -191787369, now seen corresponding path program 1 times [2022-07-21 12:51:05,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:05,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059264166] [2022-07-21 12:51:05,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:05,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:05,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:05,853 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) [2022-07-21 12:51:05,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 12:51:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:07,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2078 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 12:51:07,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-07-21 12:51:08,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:51:08,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:08,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059264166] [2022-07-21 12:51:08,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059264166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:51:08,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:51:08,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:51:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896952194] [2022-07-21 12:51:08,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:51:08,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:51:08,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:51:08,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:51:08,012 INFO L87 Difference]: Start difference. First operand 2260 states and 3199 transitions. Second operand has 6 states, 5 states have (on average 17.2) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 12:51:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:08,484 INFO L93 Difference]: Finished difference Result 4510 states and 6413 transitions. [2022-07-21 12:51:08,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 12:51:08,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 211 [2022-07-21 12:51:08,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:08,499 INFO L225 Difference]: With dead ends: 4510 [2022-07-21 12:51:08,499 INFO L226 Difference]: Without dead ends: 2261 [2022-07-21 12:51:08,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:51:08,511 INFO L413 NwaCegarLoop]: 3194 mSDtfsCounter, 6 mSDsluCounter, 12760 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15954 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:08,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 15954 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:51:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2022-07-21 12:51:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2261. [2022-07-21 12:51:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1520 states have (on average 1.2953947368421053) internal successors, (1969), 1564 states have internal predecessors, (1969), 616 states have call successors, (616), 125 states have call predecessors, (616), 124 states have return successors, (615), 602 states have call predecessors, (615), 615 states have call successors, (615) [2022-07-21 12:51:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3200 transitions. [2022-07-21 12:51:08,586 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3200 transitions. Word has length 211 [2022-07-21 12:51:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:08,588 INFO L495 AbstractCegarLoop]: Abstraction has 2261 states and 3200 transitions. [2022-07-21 12:51:08,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 12:51:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3200 transitions. [2022-07-21 12:51:08,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-21 12:51:08,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:08,597 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:08,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 12:51:08,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:08,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:08,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:08,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1519484747, now seen corresponding path program 1 times [2022-07-21 12:51:08,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:08,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071432897] [2022-07-21 12:51:08,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:08,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:08,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:08,822 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) [2022-07-21 12:51:08,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 12:51:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:10,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 12:51:10,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-07-21 12:51:10,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:51:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-07-21 12:51:11,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:11,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071432897] [2022-07-21 12:51:11,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071432897] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:51:11,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:51:11,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-21 12:51:11,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809734402] [2022-07-21 12:51:11,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:51:11,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 12:51:11,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:11,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 12:51:11,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-21 12:51:11,692 INFO L87 Difference]: Start difference. First operand 2261 states and 3200 transitions. Second operand has 11 states, 9 states have (on average 12.444444444444445) internal successors, (112), 11 states have internal predecessors, (112), 4 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-21 12:51:12,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:12,268 INFO L93 Difference]: Finished difference Result 4512 states and 6415 transitions. [2022-07-21 12:51:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:51:12,269 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 12.444444444444445) internal successors, (112), 11 states have internal predecessors, (112), 4 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 213 [2022-07-21 12:51:12,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:12,285 INFO L225 Difference]: With dead ends: 4512 [2022-07-21 12:51:12,285 INFO L226 Difference]: Without dead ends: 2262 [2022-07-21 12:51:12,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-21 12:51:12,299 INFO L413 NwaCegarLoop]: 3194 mSDtfsCounter, 7 mSDsluCounter, 19138 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 22332 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:12,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 22332 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:51:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-07-21 12:51:12,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2262. [2022-07-21 12:51:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 1521 states have (on average 1.2952005259697568) internal successors, (1970), 1565 states have internal predecessors, (1970), 616 states have call successors, (616), 125 states have call predecessors, (616), 124 states have return successors, (615), 602 states have call predecessors, (615), 615 states have call successors, (615) [2022-07-21 12:51:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3201 transitions. [2022-07-21 12:51:12,371 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3201 transitions. Word has length 213 [2022-07-21 12:51:12,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:12,372 INFO L495 AbstractCegarLoop]: Abstraction has 2262 states and 3201 transitions. [2022-07-21 12:51:12,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 12.444444444444445) internal successors, (112), 11 states have internal predecessors, (112), 4 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-21 12:51:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3201 transitions. [2022-07-21 12:51:12,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-21 12:51:12,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:12,381 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:12,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 12:51:12,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:12,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:12,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:12,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1053476375, now seen corresponding path program 2 times [2022-07-21 12:51:12,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:12,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230662028] [2022-07-21 12:51:12,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:51:12,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:12,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:12,604 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) [2022-07-21 12:51:12,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 12:51:13,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:51:13,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:51:13,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 12:51:13,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-21 12:51:13,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:51:13,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:13,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230662028] [2022-07-21 12:51:13,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230662028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:51:13,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:51:13,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:51:13,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070684263] [2022-07-21 12:51:13,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:51:13,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 12:51:13,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:13,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 12:51:13,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 12:51:13,921 INFO L87 Difference]: Start difference. First operand 2262 states and 3201 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-21 12:51:14,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:14,439 INFO L93 Difference]: Finished difference Result 4755 states and 6787 transitions. [2022-07-21 12:51:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 12:51:14,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 215 [2022-07-21 12:51:14,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:14,463 INFO L225 Difference]: With dead ends: 4755 [2022-07-21 12:51:14,463 INFO L226 Difference]: Without dead ends: 2520 [2022-07-21 12:51:14,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:51:14,478 INFO L413 NwaCegarLoop]: 3591 mSDtfsCounter, 369 mSDsluCounter, 6602 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 10193 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:14,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 10193 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:51:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2022-07-21 12:51:14,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2264. [2022-07-21 12:51:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 1523 states have (on average 1.2948128693368353) internal successors, (1972), 1567 states have internal predecessors, (1972), 616 states have call successors, (616), 125 states have call predecessors, (616), 124 states have return successors, (615), 602 states have call predecessors, (615), 615 states have call successors, (615) [2022-07-21 12:51:14,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3203 transitions. [2022-07-21 12:51:14,562 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3203 transitions. Word has length 215 [2022-07-21 12:51:14,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:14,566 INFO L495 AbstractCegarLoop]: Abstraction has 2264 states and 3203 transitions. [2022-07-21 12:51:14,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-21 12:51:14,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3203 transitions. [2022-07-21 12:51:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-21 12:51:14,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:14,576 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:14,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-21 12:51:14,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:14,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:14,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:14,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1356599653, now seen corresponding path program 1 times [2022-07-21 12:51:14,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:14,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801334463] [2022-07-21 12:51:14,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:14,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:14,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:14,796 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) [2022-07-21 12:51:14,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 12:51:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:16,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2188 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 12:51:16,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-07-21 12:51:16,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:51:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-07-21 12:51:17,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:17,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801334463] [2022-07-21 12:51:17,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801334463] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:51:17,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:51:17,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-21 12:51:17,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96874299] [2022-07-21 12:51:17,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:51:17,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 12:51:17,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:17,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 12:51:17,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-21 12:51:17,898 INFO L87 Difference]: Start difference. First operand 2264 states and 3203 transitions. Second operand has 13 states, 11 states have (on average 10.909090909090908) internal successors, (120), 13 states have internal predecessors, (120), 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) [2022-07-21 12:51:18,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:18,510 INFO L93 Difference]: Finished difference Result 4518 states and 6421 transitions. [2022-07-21 12:51:18,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 12:51:18,511 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.909090909090908) internal successors, (120), 13 states have internal predecessors, (120), 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 221 [2022-07-21 12:51:18,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:18,528 INFO L225 Difference]: With dead ends: 4518 [2022-07-21 12:51:18,528 INFO L226 Difference]: Without dead ends: 2265 [2022-07-21 12:51:18,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-21 12:51:18,540 INFO L413 NwaCegarLoop]: 3194 mSDtfsCounter, 12 mSDsluCounter, 19143 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 22337 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:18,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 22337 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:51:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2022-07-21 12:51:18,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2265. [2022-07-21 12:51:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 1524 states have (on average 1.2946194225721785) internal successors, (1973), 1568 states have internal predecessors, (1973), 616 states have call successors, (616), 125 states have call predecessors, (616), 124 states have return successors, (615), 602 states have call predecessors, (615), 615 states have call successors, (615) [2022-07-21 12:51:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 3204 transitions. [2022-07-21 12:51:18,609 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 3204 transitions. Word has length 221 [2022-07-21 12:51:18,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:18,609 INFO L495 AbstractCegarLoop]: Abstraction has 2265 states and 3204 transitions. [2022-07-21 12:51:18,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.909090909090908) internal successors, (120), 13 states have internal predecessors, (120), 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) [2022-07-21 12:51:18,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 3204 transitions. [2022-07-21 12:51:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-07-21 12:51:18,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:18,618 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:18,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-21 12:51:18,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:18,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:18,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:18,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1811297457, now seen corresponding path program 2 times [2022-07-21 12:51:18,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:18,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396059787] [2022-07-21 12:51:18,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:51:18,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:18,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:18,838 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) [2022-07-21 12:51:18,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 12:51:19,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:51:19,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:51:20,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 12:51:20,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-07-21 12:51:20,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:51:20,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:20,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396059787] [2022-07-21 12:51:20,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396059787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:51:20,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:51:20,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 12:51:20,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113703559] [2022-07-21 12:51:20,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:51:20,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 12:51:20,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:20,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 12:51:20,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:51:20,443 INFO L87 Difference]: Start difference. First operand 2265 states and 3204 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 12:51:20,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:20,972 INFO L93 Difference]: Finished difference Result 4511 states and 6414 transitions. [2022-07-21 12:51:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 12:51:20,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 223 [2022-07-21 12:51:20,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:20,987 INFO L225 Difference]: With dead ends: 4511 [2022-07-21 12:51:20,987 INFO L226 Difference]: Without dead ends: 2273 [2022-07-21 12:51:20,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 12:51:20,998 INFO L413 NwaCegarLoop]: 3200 mSDtfsCounter, 2 mSDsluCounter, 19177 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22377 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:20,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22377 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:51:21,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2022-07-21 12:51:21,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2022-07-21 12:51:21,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 1530 states have (on average 1.2934640522875818) internal successors, (1979), 1574 states have internal predecessors, (1979), 616 states have call successors, (616), 125 states have call predecessors, (616), 126 states have return successors, (627), 604 states have call predecessors, (627), 615 states have call successors, (627) [2022-07-21 12:51:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 3222 transitions. [2022-07-21 12:51:21,078 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 3222 transitions. Word has length 223 [2022-07-21 12:51:21,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:21,079 INFO L495 AbstractCegarLoop]: Abstraction has 2273 states and 3222 transitions. [2022-07-21 12:51:21,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 12:51:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 3222 transitions. [2022-07-21 12:51:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-21 12:51:21,088 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:21,088 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:21,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 12:51:21,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:21,310 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:21,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:21,310 INFO L85 PathProgramCache]: Analyzing trace with hash -886033841, now seen corresponding path program 1 times [2022-07-21 12:51:21,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:21,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388592373] [2022-07-21 12:51:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:21,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:21,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:21,314 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) [2022-07-21 12:51:21,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 12:51:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:23,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 2244 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 12:51:23,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-07-21 12:51:23,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:51:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2022-07-21 12:51:24,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:24,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388592373] [2022-07-21 12:51:24,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388592373] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:51:24,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:51:24,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-21 12:51:24,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847593476] [2022-07-21 12:51:24,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:51:24,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 12:51:24,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:24,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 12:51:24,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-21 12:51:24,811 INFO L87 Difference]: Start difference. First operand 2273 states and 3222 transitions. Second operand has 15 states, 13 states have (on average 9.923076923076923) internal successors, (129), 15 states have internal predecessors, (129), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 12:51:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:25,443 INFO L93 Difference]: Finished difference Result 4536 states and 6459 transitions. [2022-07-21 12:51:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 12:51:25,444 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 9.923076923076923) internal successors, (129), 15 states have internal predecessors, (129), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 235 [2022-07-21 12:51:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:25,460 INFO L225 Difference]: With dead ends: 4536 [2022-07-21 12:51:25,460 INFO L226 Difference]: Without dead ends: 2274 [2022-07-21 12:51:25,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-21 12:51:25,472 INFO L413 NwaCegarLoop]: 3194 mSDtfsCounter, 11 mSDsluCounter, 22326 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25520 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:25,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 25520 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:51:25,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2022-07-21 12:51:25,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2274. [2022-07-21 12:51:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 1531 states have (on average 1.2932723709993468) internal successors, (1980), 1575 states have internal predecessors, (1980), 616 states have call successors, (616), 125 states have call predecessors, (616), 126 states have return successors, (627), 604 states have call predecessors, (627), 615 states have call successors, (627) [2022-07-21 12:51:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3223 transitions. [2022-07-21 12:51:25,557 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3223 transitions. Word has length 235 [2022-07-21 12:51:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:25,560 INFO L495 AbstractCegarLoop]: Abstraction has 2274 states and 3223 transitions. [2022-07-21 12:51:25,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 9.923076923076923) internal successors, (129), 15 states have internal predecessors, (129), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 12:51:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3223 transitions. [2022-07-21 12:51:25,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-21 12:51:25,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:25,569 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:25,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 12:51:25,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:25,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:25,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:25,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1388266419, now seen corresponding path program 2 times [2022-07-21 12:51:25,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:25,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354298237] [2022-07-21 12:51:25,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:51:25,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:25,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:25,788 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) [2022-07-21 12:51:25,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 12:51:26,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:51:26,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:51:26,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:51:26,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-21 12:51:26,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:51:26,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:26,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354298237] [2022-07-21 12:51:26,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354298237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:51:26,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:51:26,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:51:26,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102848036] [2022-07-21 12:51:26,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:51:26,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:51:26,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:26,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:51:26,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:26,904 INFO L87 Difference]: Start difference. First operand 2274 states and 3223 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 12:51:27,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:27,154 INFO L93 Difference]: Finished difference Result 4523 states and 6436 transitions. [2022-07-21 12:51:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:51:27,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 231 [2022-07-21 12:51:27,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:27,172 INFO L225 Difference]: With dead ends: 4523 [2022-07-21 12:51:27,172 INFO L226 Difference]: Without dead ends: 2276 [2022-07-21 12:51:27,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:27,183 INFO L413 NwaCegarLoop]: 3197 mSDtfsCounter, 1 mSDsluCounter, 3194 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6391 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:27,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6391 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:51:27,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2022-07-21 12:51:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2275. [2022-07-21 12:51:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1532 states have (on average 1.2930809399477807) internal successors, (1981), 1576 states have internal predecessors, (1981), 616 states have call successors, (616), 125 states have call predecessors, (616), 126 states have return successors, (627), 604 states have call predecessors, (627), 615 states have call successors, (627) [2022-07-21 12:51:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 3224 transitions. [2022-07-21 12:51:27,281 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 3224 transitions. Word has length 231 [2022-07-21 12:51:27,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:27,282 INFO L495 AbstractCegarLoop]: Abstraction has 2275 states and 3224 transitions. [2022-07-21 12:51:27,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 12:51:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 3224 transitions. [2022-07-21 12:51:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-21 12:51:27,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:27,292 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:27,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-21 12:51:27,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:27,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:27,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:27,512 INFO L85 PathProgramCache]: Analyzing trace with hash -326695337, now seen corresponding path program 1 times [2022-07-21 12:51:27,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:27,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117916548] [2022-07-21 12:51:27,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:27,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:27,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:27,516 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) [2022-07-21 12:51:27,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 12:51:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:29,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 2324 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:51:29,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-07-21 12:51:29,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:51:29,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:29,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117916548] [2022-07-21 12:51:29,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117916548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:51:29,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:51:29,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:51:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390495368] [2022-07-21 12:51:29,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:51:29,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:51:29,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:51:29,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:29,713 INFO L87 Difference]: Start difference. First operand 2275 states and 3224 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 12:51:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:30,213 INFO L93 Difference]: Finished difference Result 6426 states and 9103 transitions. [2022-07-21 12:51:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:51:30,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 239 [2022-07-21 12:51:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:30,240 INFO L225 Difference]: With dead ends: 6426 [2022-07-21 12:51:30,240 INFO L226 Difference]: Without dead ends: 4178 [2022-07-21 12:51:30,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:30,251 INFO L413 NwaCegarLoop]: 3713 mSDtfsCounter, 2776 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 6735 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:30,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2776 Valid, 6735 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 12:51:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2022-07-21 12:51:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 4162. [2022-07-21 12:51:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4162 states, 2795 states have (on average 1.2915921288014311) internal successors, (3610), 2881 states have internal predecessors, (3610), 1131 states have call successors, (1131), 232 states have call predecessors, (1131), 235 states have return successors, (1154), 1105 states have call predecessors, (1154), 1130 states have call successors, (1154) [2022-07-21 12:51:30,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 5895 transitions. [2022-07-21 12:51:30,394 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 5895 transitions. Word has length 239 [2022-07-21 12:51:30,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:30,395 INFO L495 AbstractCegarLoop]: Abstraction has 4162 states and 5895 transitions. [2022-07-21 12:51:30,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 12:51:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 5895 transitions. [2022-07-21 12:51:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-07-21 12:51:30,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:30,405 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:30,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 12:51:30,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:30,624 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:30,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:30,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1204888151, now seen corresponding path program 1 times [2022-07-21 12:51:30,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:30,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900593428] [2022-07-21 12:51:30,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:30,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:30,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:30,628 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) [2022-07-21 12:51:30,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 12:51:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:32,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:51:33,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:33,084 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-21 12:51:33,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:51:33,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:33,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900593428] [2022-07-21 12:51:33,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900593428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:51:33,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:51:33,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:51:33,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514390474] [2022-07-21 12:51:33,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:51:33,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:51:33,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:33,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:51:33,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:33,087 INFO L87 Difference]: Start difference. First operand 4162 states and 5895 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 12:51:33,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:33,468 INFO L93 Difference]: Finished difference Result 12386 states and 17596 transitions. [2022-07-21 12:51:33,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:51:33,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 360 [2022-07-21 12:51:33,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:33,523 INFO L225 Difference]: With dead ends: 12386 [2022-07-21 12:51:33,523 INFO L226 Difference]: Without dead ends: 8251 [2022-07-21 12:51:33,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:33,545 INFO L413 NwaCegarLoop]: 3816 mSDtfsCounter, 3147 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3147 SdHoareTripleChecker+Valid, 6979 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:33,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3147 Valid, 6979 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:51:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8251 states. [2022-07-21 12:51:33,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8251 to 8248. [2022-07-21 12:51:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8248 states, 5536 states have (on average 1.2922687861271676) internal successors, (7154), 5713 states have internal predecessors, (7154), 2247 states have call successors, (2247), 462 states have call predecessors, (2247), 464 states have return successors, (2302), 2186 states have call predecessors, (2302), 2246 states have call successors, (2302) [2022-07-21 12:51:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8248 states to 8248 states and 11703 transitions. [2022-07-21 12:51:33,923 INFO L78 Accepts]: Start accepts. Automaton has 8248 states and 11703 transitions. Word has length 360 [2022-07-21 12:51:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:33,924 INFO L495 AbstractCegarLoop]: Abstraction has 8248 states and 11703 transitions. [2022-07-21 12:51:33,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 12:51:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 8248 states and 11703 transitions. [2022-07-21 12:51:33,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-07-21 12:51:33,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:33,941 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:34,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 12:51:34,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:34,164 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:34,165 INFO L85 PathProgramCache]: Analyzing trace with hash 71382096, now seen corresponding path program 1 times [2022-07-21 12:51:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:34,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969919867] [2022-07-21 12:51:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:34,167 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:34,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:34,170 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) [2022-07-21 12:51:34,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 12:51:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:36,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2766 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:51:36,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-21 12:51:36,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:51:36,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:36,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969919867] [2022-07-21 12:51:36,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969919867] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:51:36,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:51:36,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:51:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719831888] [2022-07-21 12:51:36,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:51:36,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:51:36,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:51:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:36,627 INFO L87 Difference]: Start difference. First operand 8248 states and 11703 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 12:51:37,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:37,176 INFO L93 Difference]: Finished difference Result 20588 states and 29255 transitions. [2022-07-21 12:51:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:51:37,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 361 [2022-07-21 12:51:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:37,240 INFO L225 Difference]: With dead ends: 20588 [2022-07-21 12:51:37,241 INFO L226 Difference]: Without dead ends: 12367 [2022-07-21 12:51:37,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:37,276 INFO L413 NwaCegarLoop]: 3797 mSDtfsCounter, 3173 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3173 SdHoareTripleChecker+Valid, 6960 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:37,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3173 Valid, 6960 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:51:37,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12367 states. [2022-07-21 12:51:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12367 to 12364. [2022-07-21 12:51:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12364 states, 8303 states have (on average 1.291340479344815) internal successors, (10722), 8566 states have internal predecessors, (10722), 3362 states have call successors, (3362), 692 states have call predecessors, (3362), 698 states have return successors, (3459), 3276 states have call predecessors, (3459), 3361 states have call successors, (3459) [2022-07-21 12:51:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12364 states to 12364 states and 17543 transitions. [2022-07-21 12:51:37,726 INFO L78 Accepts]: Start accepts. Automaton has 12364 states and 17543 transitions. Word has length 361 [2022-07-21 12:51:37,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:37,727 INFO L495 AbstractCegarLoop]: Abstraction has 12364 states and 17543 transitions. [2022-07-21 12:51:37,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 12:51:37,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12364 states and 17543 transitions. [2022-07-21 12:51:37,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-07-21 12:51:37,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:37,749 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:37,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 12:51:37,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:37,968 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:37,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1100248334, now seen corresponding path program 1 times [2022-07-21 12:51:37,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:37,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543607518] [2022-07-21 12:51:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:37,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:37,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:37,972 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) [2022-07-21 12:51:37,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 12:51:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:40,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:51:40,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-07-21 12:51:40,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:51:40,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:40,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543607518] [2022-07-21 12:51:40,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543607518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:51:40,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:51:40,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:51:40,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833050968] [2022-07-21 12:51:40,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:51:40,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:51:40,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:40,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:51:40,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:40,537 INFO L87 Difference]: Start difference. First operand 12364 states and 17543 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 12:51:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:41,318 INFO L93 Difference]: Finished difference Result 28816 states and 40937 transitions. [2022-07-21 12:51:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:51:41,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 356 [2022-07-21 12:51:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:41,406 INFO L225 Difference]: With dead ends: 28816 [2022-07-21 12:51:41,406 INFO L226 Difference]: Without dead ends: 16479 [2022-07-21 12:51:41,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:41,453 INFO L413 NwaCegarLoop]: 3797 mSDtfsCounter, 3174 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3174 SdHoareTripleChecker+Valid, 6960 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:41,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3174 Valid, 6960 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:51:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16479 states. [2022-07-21 12:51:42,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16479 to 16476. [2022-07-21 12:51:42,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16476 states, 11069 states have (on average 1.290721835757521) internal successors, (14287), 11418 states have internal predecessors, (14287), 4474 states have call successors, (4474), 922 states have call predecessors, (4474), 932 states have return successors, (4613), 4363 states have call predecessors, (4613), 4473 states have call successors, (4613) [2022-07-21 12:51:42,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16476 states to 16476 states and 23374 transitions. [2022-07-21 12:51:42,185 INFO L78 Accepts]: Start accepts. Automaton has 16476 states and 23374 transitions. Word has length 356 [2022-07-21 12:51:42,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:42,187 INFO L495 AbstractCegarLoop]: Abstraction has 16476 states and 23374 transitions. [2022-07-21 12:51:42,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 12:51:42,187 INFO L276 IsEmpty]: Start isEmpty. Operand 16476 states and 23374 transitions. [2022-07-21 12:51:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-07-21 12:51:42,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:42,219 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:42,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 12:51:42,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:42,440 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:42,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:42,441 INFO L85 PathProgramCache]: Analyzing trace with hash -911585011, now seen corresponding path program 1 times [2022-07-21 12:51:42,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:42,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053667161] [2022-07-21 12:51:42,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:42,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:42,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:42,445 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) [2022-07-21 12:51:42,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 12:51:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:45,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 2926 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:51:45,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-07-21 12:51:45,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:51:45,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:45,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053667161] [2022-07-21 12:51:45,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053667161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:51:45,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:51:45,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:51:45,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846238674] [2022-07-21 12:51:45,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:51:45,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:51:45,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:45,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:51:45,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:45,100 INFO L87 Difference]: Start difference. First operand 16476 states and 23374 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-07-21 12:51:45,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:45,623 INFO L93 Difference]: Finished difference Result 32909 states and 46689 transitions. [2022-07-21 12:51:45,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:51:45,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 428 [2022-07-21 12:51:45,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:45,805 INFO L225 Difference]: With dead ends: 32909 [2022-07-21 12:51:45,806 INFO L226 Difference]: Without dead ends: 16460 [2022-07-21 12:51:45,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:45,872 INFO L413 NwaCegarLoop]: 3194 mSDtfsCounter, 3183 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3183 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:45,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3183 Valid, 3194 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:51:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16460 states. [2022-07-21 12:51:46,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16460 to 16460. [2022-07-21 12:51:46,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16460 states, 11061 states have (on average 1.2902088418768647) internal successors, (14271), 11410 states have internal predecessors, (14271), 4466 states have call successors, (4466), 922 states have call predecessors, (4466), 932 states have return successors, (4605), 4355 states have call predecessors, (4605), 4465 states have call successors, (4605) [2022-07-21 12:51:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16460 states to 16460 states and 23342 transitions. [2022-07-21 12:51:46,596 INFO L78 Accepts]: Start accepts. Automaton has 16460 states and 23342 transitions. Word has length 428 [2022-07-21 12:51:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:46,596 INFO L495 AbstractCegarLoop]: Abstraction has 16460 states and 23342 transitions. [2022-07-21 12:51:46,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-07-21 12:51:46,597 INFO L276 IsEmpty]: Start isEmpty. Operand 16460 states and 23342 transitions. [2022-07-21 12:51:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-07-21 12:51:46,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:46,616 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:46,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 12:51:46,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:46,836 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2132796789, now seen corresponding path program 1 times [2022-07-21 12:51:46,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:46,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535130462] [2022-07-21 12:51:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:46,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:46,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:46,841 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:51:46,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 12:51:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:49,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:51:49,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-07-21 12:51:49,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:51:49,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:49,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535130462] [2022-07-21 12:51:49,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535130462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:51:49,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:51:49,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:51:49,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536250821] [2022-07-21 12:51:49,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:51:49,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:51:49,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:49,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:51:49,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:49,606 INFO L87 Difference]: Start difference. First operand 16460 states and 23342 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 12:51:50,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:50,311 INFO L93 Difference]: Finished difference Result 36990 states and 52519 transitions. [2022-07-21 12:51:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:51:50,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 357 [2022-07-21 12:51:50,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:50,514 INFO L225 Difference]: With dead ends: 36990 [2022-07-21 12:51:50,515 INFO L226 Difference]: Without dead ends: 20557 [2022-07-21 12:51:50,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:50,631 INFO L413 NwaCegarLoop]: 3792 mSDtfsCounter, 3171 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3171 SdHoareTripleChecker+Valid, 6951 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:50,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3171 Valid, 6951 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:51:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20557 states. [2022-07-21 12:51:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20557 to 20554. [2022-07-21 12:51:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20554 states, 13818 states have (on average 1.2898393399913157) internal successors, (17823), 14253 states have internal predecessors, (17823), 5571 states have call successors, (5571), 1150 states have call predecessors, (5571), 1164 states have return successors, (5752), 5435 states have call predecessors, (5752), 5570 states have call successors, (5752) [2022-07-21 12:51:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20554 states to 20554 states and 29146 transitions. [2022-07-21 12:51:51,816 INFO L78 Accepts]: Start accepts. Automaton has 20554 states and 29146 transitions. Word has length 357 [2022-07-21 12:51:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:51,816 INFO L495 AbstractCegarLoop]: Abstraction has 20554 states and 29146 transitions. [2022-07-21 12:51:51,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 12:51:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 20554 states and 29146 transitions. [2022-07-21 12:51:51,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-07-21 12:51:51,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:51,846 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:51,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-21 12:51:52,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:52,060 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:52,061 INFO L85 PathProgramCache]: Analyzing trace with hash -990641278, now seen corresponding path program 1 times [2022-07-21 12:51:52,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:52,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105340689] [2022-07-21 12:51:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:52,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:52,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:52,067 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:51:52,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 12:51:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:54,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 3062 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:51:54,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:51:55,054 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-21 12:51:55,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:51:55,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:51:55,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105340689] [2022-07-21 12:51:55,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105340689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:51:55,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:51:55,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:51:55,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174960914] [2022-07-21 12:51:55,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:51:55,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:51:55,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:51:55,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:51:55,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:55,058 INFO L87 Difference]: Start difference. First operand 20554 states and 29146 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-07-21 12:51:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:51:55,723 INFO L93 Difference]: Finished difference Result 41061 states and 58227 transitions. [2022-07-21 12:51:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:51:55,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 455 [2022-07-21 12:51:55,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:51:55,841 INFO L225 Difference]: With dead ends: 41061 [2022-07-21 12:51:55,842 INFO L226 Difference]: Without dead ends: 20534 [2022-07-21 12:51:55,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:51:55,942 INFO L413 NwaCegarLoop]: 3190 mSDtfsCounter, 3150 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3150 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:51:55,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3150 Valid, 3190 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:51:55,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20534 states. [2022-07-21 12:51:56,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20534 to 20534. [2022-07-21 12:51:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20534 states, 13808 states have (on average 1.2893250289687137) internal successors, (17803), 14243 states have internal predecessors, (17803), 5561 states have call successors, (5561), 1150 states have call predecessors, (5561), 1164 states have return successors, (5742), 5425 states have call predecessors, (5742), 5560 states have call successors, (5742) [2022-07-21 12:51:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20534 states to 20534 states and 29106 transitions. [2022-07-21 12:51:56,678 INFO L78 Accepts]: Start accepts. Automaton has 20534 states and 29106 transitions. Word has length 455 [2022-07-21 12:51:56,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:51:56,679 INFO L495 AbstractCegarLoop]: Abstraction has 20534 states and 29106 transitions. [2022-07-21 12:51:56,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-07-21 12:51:56,680 INFO L276 IsEmpty]: Start isEmpty. Operand 20534 states and 29106 transitions. [2022-07-21 12:51:56,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-07-21 12:51:56,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:51:56,705 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:51:56,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-21 12:51:56,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:51:56,928 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:51:56,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:51:56,928 INFO L85 PathProgramCache]: Analyzing trace with hash -657438690, now seen corresponding path program 1 times [2022-07-21 12:51:56,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:51:56,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34652051] [2022-07-21 12:51:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:51:56,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:51:56,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:51:56,931 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:51:56,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 12:51:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:51:59,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 2915 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 12:51:59,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:52:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-21 12:52:00,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:52:00,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:52:00,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34652051] [2022-07-21 12:52:00,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34652051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:52:00,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:52:00,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:52:00,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104105718] [2022-07-21 12:52:00,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:52:00,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:52:00,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:52:00,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:52:00,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:52:00,902 INFO L87 Difference]: Start difference. First operand 20534 states and 29106 transitions. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 5 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (43), 5 states have call predecessors, (43), 5 states have call successors, (43) [2022-07-21 12:52:32,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:52:34,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:52:45,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:52:45,855 INFO L93 Difference]: Finished difference Result 73815 states and 105693 transitions. [2022-07-21 12:52:45,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 12:52:45,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 5 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (43), 5 states have call predecessors, (43), 5 states have call successors, (43) Word has length 392 [2022-07-21 12:52:45,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:52:46,164 INFO L225 Difference]: With dead ends: 73815 [2022-07-21 12:52:46,164 INFO L226 Difference]: Without dead ends: 53308 [2022-07-21 12:52:46,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:52:46,272 INFO L413 NwaCegarLoop]: 4193 mSDtfsCounter, 5941 mSDsluCounter, 3565 mSDsCounter, 0 mSdLazyCounter, 8017 mSolverCounterSat, 3815 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6528 SdHoareTripleChecker+Valid, 7758 SdHoareTripleChecker+Invalid, 11834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3815 IncrementalHoareTripleChecker+Valid, 8017 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.8s IncrementalHoareTripleChecker+Time [2022-07-21 12:52:46,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6528 Valid, 7758 Invalid, 11834 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3815 Valid, 8017 Invalid, 2 Unknown, 0 Unchecked, 42.8s Time] [2022-07-21 12:52:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53308 states. [2022-07-21 12:52:48,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53308 to 52952. [2022-07-21 12:52:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52952 states, 34886 states have (on average 1.2771312274264748) internal successors, (44554), 36118 states have internal predecessors, (44554), 15004 states have call successors, (15004), 2868 states have call predecessors, (15004), 3061 states have return successors, (16226), 14835 states have call predecessors, (16226), 15003 states have call successors, (16226) [2022-07-21 12:52:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52952 states to 52952 states and 75784 transitions. [2022-07-21 12:52:48,721 INFO L78 Accepts]: Start accepts. Automaton has 52952 states and 75784 transitions. Word has length 392 [2022-07-21 12:52:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:52:48,722 INFO L495 AbstractCegarLoop]: Abstraction has 52952 states and 75784 transitions. [2022-07-21 12:52:48,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 5 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (43), 5 states have call predecessors, (43), 5 states have call successors, (43) [2022-07-21 12:52:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 52952 states and 75784 transitions. [2022-07-21 12:52:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-07-21 12:52:48,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:52:48,773 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:52:48,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-07-21 12:52:48,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:52:48,974 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:52:48,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:52:48,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1207671107, now seen corresponding path program 1 times [2022-07-21 12:52:48,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:52:48,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176312288] [2022-07-21 12:52:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:52:48,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:52:48,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:52:48,978 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:52:48,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-21 12:52:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:52:52,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 3114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:52:52,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:52:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2022-07-21 12:52:52,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:52:52,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:52:52,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176312288] [2022-07-21 12:52:52,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176312288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:52:52,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:52:52,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:52:52,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532515505] [2022-07-21 12:52:52,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:52:52,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:52:52,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:52:52,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:52:52,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:52:52,454 INFO L87 Difference]: Start difference. First operand 52952 states and 75784 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-07-21 12:52:54,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:52:54,145 INFO L93 Difference]: Finished difference Result 105837 states and 151443 transitions. [2022-07-21 12:52:54,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:52:54,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 466 [2022-07-21 12:52:54,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:52:54,545 INFO L225 Difference]: With dead ends: 105837 [2022-07-21 12:52:54,546 INFO L226 Difference]: Without dead ends: 52912 [2022-07-21 12:52:54,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:52:54,754 INFO L413 NwaCegarLoop]: 3186 mSDtfsCounter, 3137 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3137 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:52:54,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3137 Valid, 3186 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:52:54,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52912 states. [2022-07-21 12:52:56,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52912 to 52912. [2022-07-21 12:52:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52912 states, 34866 states have (on average 1.2767165720185853) internal successors, (44514), 36098 states have internal predecessors, (44514), 14984 states have call successors, (14984), 2868 states have call predecessors, (14984), 3061 states have return successors, (16176), 14815 states have call predecessors, (16176), 14983 states have call successors, (16176) [2022-07-21 12:52:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52912 states to 52912 states and 75674 transitions. [2022-07-21 12:52:56,825 INFO L78 Accepts]: Start accepts. Automaton has 52912 states and 75674 transitions. Word has length 466 [2022-07-21 12:52:56,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:52:56,826 INFO L495 AbstractCegarLoop]: Abstraction has 52912 states and 75674 transitions. [2022-07-21 12:52:56,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-07-21 12:52:56,826 INFO L276 IsEmpty]: Start isEmpty. Operand 52912 states and 75674 transitions. [2022-07-21 12:52:56,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-07-21 12:52:56,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:52:56,874 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:52:56,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-21 12:52:57,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:52:57,075 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:52:57,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:52:57,075 INFO L85 PathProgramCache]: Analyzing trace with hash 424396886, now seen corresponding path program 1 times [2022-07-21 12:52:57,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:52:57,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29977902] [2022-07-21 12:52:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:52:57,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:52:57,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:52:57,079 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:52:57,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-21 12:52:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:52:59,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 3147 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:52:59,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:53:00,409 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-07-21 12:53:00,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:53:00,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:53:00,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29977902] [2022-07-21 12:53:00,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29977902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:53:00,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:53:00,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:53:00,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33793522] [2022-07-21 12:53:00,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:53:00,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:53:00,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:53:00,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:53:00,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:53:00,412 INFO L87 Difference]: Start difference. First operand 52912 states and 75674 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-07-21 12:53:02,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:53:02,133 INFO L93 Difference]: Finished difference Result 102159 states and 145917 transitions. [2022-07-21 12:53:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:53:02,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 479 [2022-07-21 12:53:02,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:53:02,351 INFO L225 Difference]: With dead ends: 102159 [2022-07-21 12:53:02,351 INFO L226 Difference]: Without dead ends: 49274 [2022-07-21 12:53:02,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:53:02,637 INFO L413 NwaCegarLoop]: 3110 mSDtfsCounter, 3058 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3058 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:53:02,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3058 Valid, 3110 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:53:02,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49274 states. [2022-07-21 12:53:04,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49274 to 49265. [2022-07-21 12:53:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49265 states, 32673 states have (on average 1.27836439873902) internal successors, (41768), 33841 states have internal predecessors, (41768), 13724 states have call successors, (13724), 2709 states have call predecessors, (13724), 2867 states have return successors, (14755), 13510 states have call predecessors, (14755), 13723 states have call successors, (14755) [2022-07-21 12:53:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49265 states to 49265 states and 70247 transitions. [2022-07-21 12:53:04,478 INFO L78 Accepts]: Start accepts. Automaton has 49265 states and 70247 transitions. Word has length 479 [2022-07-21 12:53:04,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:53:04,479 INFO L495 AbstractCegarLoop]: Abstraction has 49265 states and 70247 transitions. [2022-07-21 12:53:04,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-07-21 12:53:04,479 INFO L276 IsEmpty]: Start isEmpty. Operand 49265 states and 70247 transitions. [2022-07-21 12:53:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-07-21 12:53:04,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:53:04,512 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:53:04,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-21 12:53:04,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:53:04,713 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:53:04,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:53:04,714 INFO L85 PathProgramCache]: Analyzing trace with hash 402344649, now seen corresponding path program 1 times [2022-07-21 12:53:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:53:04,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648634872] [2022-07-21 12:53:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:53:04,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:53:04,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:53:04,717 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:53:04,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-21 12:53:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:53:07,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 12:53:07,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:53:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-07-21 12:53:09,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:53:09,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:53:09,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648634872] [2022-07-21 12:53:09,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648634872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:53:09,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:53:09,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 12:53:09,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875352091] [2022-07-21 12:53:09,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:53:09,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 12:53:09,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:53:09,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 12:53:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:53:09,032 INFO L87 Difference]: Start difference. First operand 49265 states and 70247 transitions. Second operand has 8 states, 8 states have (on average 24.25) internal successors, (194), 7 states have internal predecessors, (194), 5 states have call successors, (50), 4 states have call predecessors, (50), 5 states have return successors, (44), 6 states have call predecessors, (44), 5 states have call successors, (44)