./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.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 c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 00:57:21,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 00:57:21,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 00:57:21,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 00:57:21,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 00:57:21,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 00:57:21,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 00:57:21,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 00:57:21,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 00:57:21,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 00:57:21,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 00:57:21,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 00:57:21,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 00:57:21,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 00:57:21,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 00:57:21,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 00:57:21,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 00:57:21,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 00:57:21,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 00:57:21,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 00:57:21,153 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 00:57:21,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 00:57:21,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 00:57:21,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 00:57:21,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 00:57:21,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 00:57:21,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 00:57:21,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 00:57:21,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 00:57:21,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 00:57:21,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 00:57:21,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 00:57:21,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 00:57:21,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 00:57:21,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 00:57:21,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 00:57:21,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 00:57:21,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 00:57:21,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 00:57:21,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 00:57:21,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 00:57:21,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 00:57:21,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 00:57:21,200 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 00:57:21,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 00:57:21,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 00:57:21,201 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 00:57:21,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 00:57:21,202 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 00:57:21,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 00:57:21,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 00:57:21,203 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 00:57:21,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 00:57:21,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 00:57:21,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 00:57:21,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 00:57:21,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 00:57:21,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 00:57:21,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 00:57:21,204 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 00:57:21,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 00:57:21,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 00:57:21,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 00:57:21,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 00:57:21,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:57:21,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 00:57:21,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 00:57:21,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 00:57:21,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 00:57:21,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 00:57:21,206 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 00:57:21,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 00:57:21,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 00:57:21,207 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 [2022-07-20 00:57:21,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 00:57:21,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 00:57:21,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 00:57:21,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 00:57:21,521 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 00:57:21,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-20 00:57:21,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42d35f32/c6aab9db10b147c1be86ff266cce3afd/FLAG403a995ac [2022-07-20 00:57:22,361 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 00:57:22,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-20 00:57:22,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42d35f32/c6aab9db10b147c1be86ff266cce3afd/FLAG403a995ac [2022-07-20 00:57:22,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42d35f32/c6aab9db10b147c1be86ff266cce3afd [2022-07-20 00:57:22,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 00:57:22,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 00:57:22,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 00:57:22,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 00:57:22,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 00:57:22,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:57:22" (1/1) ... [2022-07-20 00:57:22,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bdbae57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:22, skipping insertion in model container [2022-07-20 00:57:22,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:57:22" (1/1) ... [2022-07-20 00:57:22,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 00:57:22,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:57:24,621 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-07-20 00:57:24,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:57:24,901 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 00:57:25,123 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: request_id = (int )(response_que.response_id >> 4) & 255 [6760] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckBinaryExpression(TypeCheckHelper.java:207) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.constructBinaryExpression(ExpressionFactory.java:597) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.newBinaryExpression(ExpressionFactory.java:132) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:483) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-20 00:57:25,131 INFO L158 Benchmark]: Toolchain (without parser) took 2671.92ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 58.2MB in the beginning and 91.2MB in the end (delta: -33.0MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2022-07-20 00:57:25,132 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 90.2MB. Free memory is still 67.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 00:57:25,135 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2669.23ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 58.0MB in the beginning and 91.2MB in the end (delta: -33.2MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2022-07-20 00:57:25,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 90.2MB. Free memory is still 67.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2669.23ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 58.0MB in the beginning and 91.2MB in the end (delta: -33.2MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: request_id = (int )(response_que.response_id >> 4) & 255 [6760] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: request_id = (int )(response_que.response_id >> 4) & 255 [6760]: 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-32_7a-drivers--scsi--3w-9xxx.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 c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 00:57:26,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 00:57:26,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 00:57:27,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 00:57:27,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 00:57:27,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 00:57:27,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 00:57:27,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 00:57:27,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 00:57:27,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 00:57:27,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 00:57:27,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 00:57:27,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 00:57:27,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 00:57:27,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 00:57:27,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 00:57:27,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 00:57:27,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 00:57:27,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 00:57:27,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 00:57:27,057 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 00:57:27,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 00:57:27,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 00:57:27,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 00:57:27,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 00:57:27,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 00:57:27,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 00:57:27,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 00:57:27,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 00:57:27,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 00:57:27,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 00:57:27,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 00:57:27,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 00:57:27,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 00:57:27,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 00:57:27,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 00:57:27,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 00:57:27,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 00:57:27,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 00:57:27,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 00:57:27,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 00:57:27,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 00:57:27,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-20 00:57:27,125 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 00:57:27,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 00:57:27,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 00:57:27,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 00:57:27,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 00:57:27,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 00:57:27,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 00:57:27,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 00:57:27,129 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 00:57:27,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 00:57:27,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 00:57:27,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 00:57:27,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 00:57:27,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 00:57:27,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 00:57:27,131 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 00:57:27,131 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 00:57:27,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 00:57:27,132 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 00:57:27,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 00:57:27,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 00:57:27,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 00:57:27,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 00:57:27,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:57:27,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 00:57:27,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 00:57:27,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 00:57:27,134 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 00:57:27,134 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 00:57:27,134 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 00:57:27,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 00:57:27,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 00:57:27,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 00:57:27,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 [2022-07-20 00:57:27,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 00:57:27,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 00:57:27,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 00:57:27,479 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 00:57:27,479 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 00:57:27,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-20 00:57:27,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762f9a200/71f21a9420124227b549d1ed22541853/FLAG701b66525 [2022-07-20 00:57:28,357 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 00:57:28,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-20 00:57:28,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762f9a200/71f21a9420124227b549d1ed22541853/FLAG701b66525 [2022-07-20 00:57:28,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762f9a200/71f21a9420124227b549d1ed22541853 [2022-07-20 00:57:28,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 00:57:28,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 00:57:28,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 00:57:28,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 00:57:28,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 00:57:28,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:57:28" (1/1) ... [2022-07-20 00:57:28,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c6786a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:28, skipping insertion in model container [2022-07-20 00:57:28,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:57:28" (1/1) ... [2022-07-20 00:57:28,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 00:57:29,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:57:31,197 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-07-20 00:57:31,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:57:31,570 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 00:57:31,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:57:32,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-07-20 00:57:32,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:57:32,065 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 00:57:32,376 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-07-20 00:57:32,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:57:32,550 INFO L208 MainTranslator]: Completed translation [2022-07-20 00:57:32,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:32 WrapperNode [2022-07-20 00:57:32,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 00:57:32,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 00:57:32,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 00:57:32,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 00:57:32,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:32" (1/1) ... [2022-07-20 00:57:32,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:32" (1/1) ... [2022-07-20 00:57:32,896 INFO L137 Inliner]: procedures = 320, calls = 2532, calls flagged for inlining = 126, calls inlined = 120, statements flattened = 5396 [2022-07-20 00:57:32,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 00:57:32,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 00:57:32,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 00:57:32,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 00:57:32,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:32" (1/1) ... [2022-07-20 00:57:32,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:32" (1/1) ... [2022-07-20 00:57:32,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:32" (1/1) ... [2022-07-20 00:57:32,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:32" (1/1) ... [2022-07-20 00:57:33,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:32" (1/1) ... [2022-07-20 00:57:33,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:32" (1/1) ... [2022-07-20 00:57:33,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:32" (1/1) ... [2022-07-20 00:57:33,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 00:57:33,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 00:57:33,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 00:57:33,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 00:57:33,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:32" (1/1) ... [2022-07-20 00:57:33,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:57:33,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:57:33,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 00:57:33,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 00:57:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-20 00:57:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-20 00:57:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-20 00:57:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-20 00:57:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 00:57:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-20 00:57:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-20 00:57:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-20 00:57:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-07-20 00:57:33,419 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-07-20 00:57:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 00:57:33,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 00:57:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 00:57:33,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 00:57:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-07-20 00:57:33,420 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-07-20 00:57:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 00:57:33,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 00:57:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure twa_get_request_id [2022-07-20 00:57:33,420 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_get_request_id [2022-07-20 00:57:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure twa_fill_sense [2022-07-20 00:57:33,421 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_fill_sense [2022-07-20 00:57:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2022-07-20 00:57:33,421 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2022-07-20 00:57:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-07-20 00:57:33,421 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-07-20 00:57:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_remove_host [2022-07-20 00:57:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_remove_host [2022-07-20 00:57:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-20 00:57:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-20 00:57:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-20 00:57:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-20 00:57:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_4 [2022-07-20 00:57:33,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_4 [2022-07-20 00:57:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-20 00:57:33,423 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-20 00:57:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 00:57:33,423 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 00:57:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-07-20 00:57:33,423 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-07-20 00:57:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure twa_resume [2022-07-20 00:57:33,424 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_resume [2022-07-20 00:57:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 00:57:33,424 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 00:57:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sglist [2022-07-20 00:57:33,424 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sglist [2022-07-20 00:57:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-20 00:57:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-20 00:57:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-20 00:57:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-20 00:57:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure twa_remove [2022-07-20 00:57:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_remove [2022-07-20 00:57:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 00:57:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure twa_reset_sequence [2022-07-20 00:57:33,426 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_reset_sequence [2022-07-20 00:57:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-07-20 00:57:33,426 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-07-20 00:57:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 00:57:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure twa_get_param [2022-07-20 00:57:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_get_param [2022-07-20 00:57:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-07-20 00:57:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-07-20 00:57:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure twa_string_lookup [2022-07-20 00:57:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_string_lookup [2022-07-20 00:57:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-20 00:57:33,428 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-20 00:57:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-20 00:57:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-20 00:57:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-20 00:57:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 00:57:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 00:57:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-07-20 00:57:33,429 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-07-20 00:57:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 00:57:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-20 00:57:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 00:57:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-20 00:57:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure __twa_shutdown [2022-07-20 00:57:33,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __twa_shutdown [2022-07-20 00:57:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_twa_chrdev_mutex [2022-07-20 00:57:33,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_twa_chrdev_mutex [2022-07-20 00:57:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-20 00:57:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-07-20 00:57:33,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-07-20 00:57:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-07-20 00:57:33,431 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-07-20 00:57:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure twa_shutdown [2022-07-20 00:57:33,431 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_shutdown [2022-07-20 00:57:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure twa_post_command_packet [2022-07-20 00:57:33,432 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_post_command_packet [2022-07-20 00:57:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-20 00:57:33,432 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-20 00:57:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure twa_free_request_id [2022-07-20 00:57:33,432 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_free_request_id [2022-07-20 00:57:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-07-20 00:57:33,432 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-07-20 00:57:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_dma_unmap [2022-07-20 00:57:33,433 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_dma_unmap [2022-07-20 00:57:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure twa_decode_bits [2022-07-20 00:57:33,433 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_decode_bits [2022-07-20 00:57:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-20 00:57:33,433 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-20 00:57:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-07-20 00:57:33,434 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-07-20 00:57:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-20 00:57:33,434 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-20 00:57:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure pci_try_set_mwi [2022-07-20 00:57:33,434 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_try_set_mwi [2022-07-20 00:57:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-20 00:57:33,435 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-20 00:57:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-07-20 00:57:33,435 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-07-20 00:57:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure twa_initconnection [2022-07-20 00:57:33,435 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_initconnection [2022-07-20 00:57:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-07-20 00:57:33,436 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-07-20 00:57:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-20 00:57:33,436 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-20 00:57:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-07-20 00:57:33,436 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-07-20 00:57:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-20 00:57:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-20 00:57:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-20 00:57:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-20 00:57:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 00:57:33,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 00:57:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-20 00:57:33,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-20 00:57:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ioctl_lock_of_TAG_TW_Device_Extension [2022-07-20 00:57:33,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ioctl_lock_of_TAG_TW_Device_Extension [2022-07-20 00:57:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_msi_exact [2022-07-20 00:57:33,438 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_msi_exact [2022-07-20 00:57:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure twa_aen_queue_event [2022-07-20 00:57:33,439 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_aen_queue_event [2022-07-20 00:57:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 00:57:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure twa_interrupt [2022-07-20 00:57:33,439 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_interrupt [2022-07-20 00:57:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-20 00:57:33,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-20 00:57:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-20 00:57:33,440 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-20 00:57:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_count [2022-07-20 00:57:33,440 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_count [2022-07-20 00:57:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 00:57:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-20 00:57:33,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-20 00:57:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-07-20 00:57:33,441 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-07-20 00:57:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 00:57:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-20 00:57:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-20 00:57:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-20 00:57:33,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-20 00:57:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-20 00:57:33,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-20 00:57:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-20 00:57:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-07-20 00:57:33,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-07-20 00:57:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure twa_allocate_memory [2022-07-20 00:57:33,442 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_allocate_memory [2022-07-20 00:57:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-07-20 00:57:33,443 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-07-20 00:57:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure twa_poll_response [2022-07-20 00:57:33,443 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_poll_response [2022-07-20 00:57:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_3 [2022-07-20 00:57:33,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_3 [2022-07-20 00:57:33,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ioctl_lock_of_TAG_TW_Device_Extension [2022-07-20 00:57:33,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ioctl_lock_of_TAG_TW_Device_Extension [2022-07-20 00:57:33,444 INFO L130 BoogieDeclarations]: Found specification of procedure twa_scsiop_execute_scsi [2022-07-20 00:57:33,444 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_scsiop_execute_scsi [2022-07-20 00:57:33,444 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-07-20 00:57:33,444 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-07-20 00:57:33,444 INFO L130 BoogieDeclarations]: Found specification of procedure twa_reset_device_extension [2022-07-20 00:57:33,445 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_reset_device_extension [2022-07-20 00:57:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure twa_free_device_extension [2022-07-20 00:57:33,445 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_free_device_extension [2022-07-20 00:57:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-07-20 00:57:33,445 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-07-20 00:57:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_twa_chrdev_mutex [2022-07-20 00:57:33,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_twa_chrdev_mutex [2022-07-20 00:57:33,446 INFO L130 BoogieDeclarations]: Found specification of procedure twa_check_bits [2022-07-20 00:57:33,446 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_check_bits [2022-07-20 00:57:33,446 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-20 00:57:33,446 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-20 00:57:33,446 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-07-20 00:57:33,446 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-07-20 00:57:33,447 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-07-20 00:57:33,447 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-07-20 00:57:33,447 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-07-20 00:57:33,447 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-07-20 00:57:33,447 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-20 00:57:33,447 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-20 00:57:33,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-20 00:57:33,448 INFO L130 BoogieDeclarations]: Found specification of procedure twa_aen_read_queue [2022-07-20 00:57:33,448 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_aen_read_queue [2022-07-20 00:57:33,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 00:57:33,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 00:57:34,193 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 00:57:34,198 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 00:57:34,440 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 00:58:29,435 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 00:58:29,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 00:58:29,452 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 00:58:29,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:58:29 BoogieIcfgContainer [2022-07-20 00:58:29,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 00:58:29,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 00:58:29,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 00:58:29,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 00:58:29,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:57:28" (1/3) ... [2022-07-20 00:58:29,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379df943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:58:29, skipping insertion in model container [2022-07-20 00:58:29,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:57:32" (2/3) ... [2022-07-20 00:58:29,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379df943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:58:29, skipping insertion in model container [2022-07-20 00:58:29,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:58:29" (3/3) ... [2022-07-20 00:58:29,464 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-07-20 00:58:29,478 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 00:58:29,478 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 00:58:29,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 00:58:29,567 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@330ff195, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4db91874 [2022-07-20 00:58:29,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 00:58:29,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 1579 states, 1157 states have (on average 1.3785652549697494) internal successors, (1595), 1194 states have internal predecessors, (1595), 338 states have call successors, (338), 83 states have call predecessors, (338), 82 states have return successors, (328), 327 states have call predecessors, (328), 328 states have call successors, (328) [2022-07-20 00:58:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-20 00:58:29,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:58:29,612 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:58:29,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:58:29,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:58:29,619 INFO L85 PathProgramCache]: Analyzing trace with hash -650807549, now seen corresponding path program 1 times [2022-07-20 00:58:29,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:58:29,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444434161] [2022-07-20 00:58:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:58:29,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:58:29,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:58:29,645 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:58:29,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 00:58:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:58:32,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-20 00:58:32,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:58:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-20 00:58:32,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:58:32,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:58:32,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444434161] [2022-07-20 00:58:32,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444434161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:58:32,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:58:32,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 00:58:32,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591236015] [2022-07-20 00:58:32,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:58:32,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-20 00:58:32,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:58:32,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-20 00:58:32,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 00:58:32,573 INFO L87 Difference]: Start difference. First operand has 1579 states, 1157 states have (on average 1.3785652549697494) internal successors, (1595), 1194 states have internal predecessors, (1595), 338 states have call successors, (338), 83 states have call predecessors, (338), 82 states have return successors, (328), 327 states have call predecessors, (328), 328 states have call successors, (328) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-20 00:58:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:58:32,707 INFO L93 Difference]: Finished difference Result 3153 states and 4571 transitions. [2022-07-20 00:58:32,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-20 00:58:32,710 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 207 [2022-07-20 00:58:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:58:32,740 INFO L225 Difference]: With dead ends: 3153 [2022-07-20 00:58:32,740 INFO L226 Difference]: Without dead ends: 1562 [2022-07-20 00:58:32,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 00:58:32,762 INFO L413 NwaCegarLoop]: 2248 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, 2248 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:58:32,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 00:58:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-07-20 00:58:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1562. [2022-07-20 00:58:32,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1152 states have (on average 1.3689236111111112) internal successors, (1577), 1177 states have internal predecessors, (1577), 328 states have call successors, (328), 82 states have call predecessors, (328), 81 states have return successors, (318), 317 states have call predecessors, (318), 318 states have call successors, (318) [2022-07-20 00:58:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2223 transitions. [2022-07-20 00:58:32,904 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2223 transitions. Word has length 207 [2022-07-20 00:58:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:58:32,905 INFO L495 AbstractCegarLoop]: Abstraction has 1562 states and 2223 transitions. [2022-07-20 00:58:32,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-20 00:58:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2223 transitions. [2022-07-20 00:58:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-20 00:58:32,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:58:32,910 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:58:32,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-20 00:58:33,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:58:33,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:58:33,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:58:33,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1985613877, now seen corresponding path program 1 times [2022-07-20 00:58:33,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:58:33,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720029691] [2022-07-20 00:58:33,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:58:33,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:58:33,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:58:33,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:58:33,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 00:58:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:58:36,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 00:58:36,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:58:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-20 00:58:37,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:58:37,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:58:37,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720029691] [2022-07-20 00:58:37,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720029691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:58:37,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:58:37,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:58:37,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573451246] [2022-07-20 00:58:37,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:58:37,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:58:37,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:58:37,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:58:37,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:58:37,105 INFO L87 Difference]: Start difference. First operand 1562 states and 2223 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-20 00:58:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:58:37,813 INFO L93 Difference]: Finished difference Result 3112 states and 4492 transitions. [2022-07-20 00:58:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 00:58:37,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 207 [2022-07-20 00:58:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:58:37,825 INFO L225 Difference]: With dead ends: 3112 [2022-07-20 00:58:37,826 INFO L226 Difference]: Without dead ends: 1565 [2022-07-20 00:58:37,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:58:37,835 INFO L413 NwaCegarLoop]: 2212 mSDtfsCounter, 6 mSDsluCounter, 8812 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11024 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 00:58:37,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11024 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 00:58:37,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-07-20 00:58:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2022-07-20 00:58:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1154 states have (on average 1.3691507798960139) internal successors, (1580), 1180 states have internal predecessors, (1580), 328 states have call successors, (328), 82 states have call predecessors, (328), 82 states have return successors, (319), 317 states have call predecessors, (319), 318 states have call successors, (319) [2022-07-20 00:58:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2227 transitions. [2022-07-20 00:58:37,916 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2227 transitions. Word has length 207 [2022-07-20 00:58:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:58:37,918 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 2227 transitions. [2022-07-20 00:58:37,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-20 00:58:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2227 transitions. [2022-07-20 00:58:37,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-20 00:58:37,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:58:37,922 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:58:38,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-20 00:58:38,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:58:38,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:58:38,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:58:38,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1158805767, now seen corresponding path program 1 times [2022-07-20 00:58:38,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:58:38,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582004911] [2022-07-20 00:58:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:58:38,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:58:38,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:58:38,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:58:38,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 00:58:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:58:41,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 00:58:41,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:58:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-07-20 00:58:42,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:58:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-07-20 00:58:42,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:58:42,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582004911] [2022-07-20 00:58:42,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582004911] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:58:42,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:58:42,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-20 00:58:42,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626856463] [2022-07-20 00:58:42,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:58:42,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 00:58:42,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:58:42,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 00:58:42,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-20 00:58:42,966 INFO L87 Difference]: Start difference. First operand 1565 states and 2227 transitions. Second operand has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-20 00:58:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:58:44,363 INFO L93 Difference]: Finished difference Result 3123 states and 4506 transitions. [2022-07-20 00:58:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 00:58:44,365 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 214 [2022-07-20 00:58:44,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:58:44,376 INFO L225 Difference]: With dead ends: 3123 [2022-07-20 00:58:44,376 INFO L226 Difference]: Without dead ends: 1573 [2022-07-20 00:58:44,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-20 00:58:44,386 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 10 mSDsluCounter, 15422 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17636 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-20 00:58:44,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 17636 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-20 00:58:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2022-07-20 00:58:44,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1571. [2022-07-20 00:58:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1158 states have (on average 1.3687392055267702) internal successors, (1585), 1184 states have internal predecessors, (1585), 329 states have call successors, (329), 83 states have call predecessors, (329), 83 states have return successors, (320), 318 states have call predecessors, (320), 319 states have call successors, (320) [2022-07-20 00:58:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2234 transitions. [2022-07-20 00:58:44,445 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2234 transitions. Word has length 214 [2022-07-20 00:58:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:58:44,445 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 2234 transitions. [2022-07-20 00:58:44,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-20 00:58:44,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2234 transitions. [2022-07-20 00:58:44,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-20 00:58:44,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:58:44,449 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:58:44,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 00:58:44,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:58:44,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:58:44,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:58:44,670 INFO L85 PathProgramCache]: Analyzing trace with hash -237312011, now seen corresponding path program 2 times [2022-07-20 00:58:44,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:58:44,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491280723] [2022-07-20 00:58:44,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:58:44,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:58:44,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:58:44,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:58:44,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 00:58:46,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 00:58:46,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:58:47,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:58:47,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:58:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-20 00:58:47,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:58:47,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:58:47,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491280723] [2022-07-20 00:58:47,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491280723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:58:47,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:58:47,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:58:47,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006369483] [2022-07-20 00:58:47,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:58:47,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:58:47,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:58:47,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:58:47,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:58:47,186 INFO L87 Difference]: Start difference. First operand 1571 states and 2234 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 00:58:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:58:47,842 INFO L93 Difference]: Finished difference Result 4542 states and 6480 transitions. [2022-07-20 00:58:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:58:47,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 221 [2022-07-20 00:58:47,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:58:47,864 INFO L225 Difference]: With dead ends: 4542 [2022-07-20 00:58:47,864 INFO L226 Difference]: Without dead ends: 3012 [2022-07-20 00:58:47,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:58:47,874 INFO L413 NwaCegarLoop]: 2688 mSDtfsCounter, 2143 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 4794 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 00:58:47,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 4794 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 00:58:47,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2022-07-20 00:58:47,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2972. [2022-07-20 00:58:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2208 states have (on average 1.375) internal successors, (3036), 2251 states have internal predecessors, (3036), 603 states have call successors, (603), 160 states have call predecessors, (603), 160 states have return successors, (614), 586 states have call predecessors, (614), 593 states have call successors, (614) [2022-07-20 00:58:47,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 4253 transitions. [2022-07-20 00:58:47,993 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 4253 transitions. Word has length 221 [2022-07-20 00:58:47,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:58:47,995 INFO L495 AbstractCegarLoop]: Abstraction has 2972 states and 4253 transitions. [2022-07-20 00:58:47,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 00:58:47,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 4253 transitions. [2022-07-20 00:58:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-20 00:58:47,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:58:47,999 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:58:48,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 00:58:48,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:58:48,219 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:58:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:58:48,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2094996992, now seen corresponding path program 1 times [2022-07-20 00:58:48,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:58:48,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804316889] [2022-07-20 00:58:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:58:48,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:58:48,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:58:48,225 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:58:48,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 00:58:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:58:51,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 3504 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 00:58:51,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:58:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 102 proven. 3 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2022-07-20 00:58:52,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:58:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2022-07-20 00:58:53,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:58:53,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804316889] [2022-07-20 00:58:53,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804316889] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:58:53,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:58:53,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-20 00:58:53,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932261362] [2022-07-20 00:58:53,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:58:53,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 00:58:53,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:58:53,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 00:58:53,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-20 00:58:53,190 INFO L87 Difference]: Start difference. First operand 2972 states and 4253 transitions. Second operand has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-20 00:58:54,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:58:54,772 INFO L93 Difference]: Finished difference Result 5942 states and 8636 transitions. [2022-07-20 00:58:54,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 00:58:54,773 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 221 [2022-07-20 00:58:54,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:58:54,795 INFO L225 Difference]: With dead ends: 5942 [2022-07-20 00:58:54,795 INFO L226 Difference]: Without dead ends: 2982 [2022-07-20 00:58:54,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-07-20 00:58:54,813 INFO L413 NwaCegarLoop]: 2215 mSDtfsCounter, 18 mSDsluCounter, 15428 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 17643 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-20 00:58:54,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 17643 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-20 00:58:54,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2022-07-20 00:58:54,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 2974. [2022-07-20 00:58:54,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2210 states have (on average 1.3755656108597285) internal successors, (3040), 2253 states have internal predecessors, (3040), 603 states have call successors, (603), 160 states have call predecessors, (603), 160 states have return successors, (614), 586 states have call predecessors, (614), 593 states have call successors, (614) [2022-07-20 00:58:54,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4257 transitions. [2022-07-20 00:58:54,929 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4257 transitions. Word has length 221 [2022-07-20 00:58:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:58:54,930 INFO L495 AbstractCegarLoop]: Abstraction has 2974 states and 4257 transitions. [2022-07-20 00:58:54,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-20 00:58:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4257 transitions. [2022-07-20 00:58:54,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-20 00:58:54,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:58:54,933 INFO L195 NwaCegarLoop]: trace histogram [21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:58:55,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 00:58:55,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:58:55,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:58:55,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:58:55,148 INFO L85 PathProgramCache]: Analyzing trace with hash 977688914, now seen corresponding path program 2 times [2022-07-20 00:58:55,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:58:55,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117430512] [2022-07-20 00:58:55,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:58:55,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:58:55,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:58:55,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:58:55,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 00:58:57,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 00:58:57,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:58:57,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:58:57,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:58:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-07-20 00:58:57,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:58:57,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:58:57,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117430512] [2022-07-20 00:58:57,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117430512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:58:57,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:58:57,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:58:57,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723859939] [2022-07-20 00:58:57,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:58:57,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:58:57,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:58:57,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:58:57,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:58:57,759 INFO L87 Difference]: Start difference. First operand 2974 states and 4257 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 00:58:58,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:58:58,285 INFO L93 Difference]: Finished difference Result 8812 states and 12625 transitions. [2022-07-20 00:58:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:58:58,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 228 [2022-07-20 00:58:58,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:58:58,334 INFO L225 Difference]: With dead ends: 8812 [2022-07-20 00:58:58,334 INFO L226 Difference]: Without dead ends: 5879 [2022-07-20 00:58:58,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:58:58,355 INFO L413 NwaCegarLoop]: 2540 mSDtfsCounter, 2143 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 00:58:58,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 4744 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 00:58:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2022-07-20 00:58:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5872. [2022-07-20 00:58:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 4375 states have (on average 1.3766857142857143) internal successors, (6023), 4452 states have internal predecessors, (6023), 1178 states have call successors, (1178), 317 states have call predecessors, (1178), 318 states have return successors, (1210), 1154 states have call predecessors, (1210), 1168 states have call successors, (1210) [2022-07-20 00:58:58,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 8411 transitions. [2022-07-20 00:58:58,660 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 8411 transitions. Word has length 228 [2022-07-20 00:58:58,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:58:58,661 INFO L495 AbstractCegarLoop]: Abstraction has 5872 states and 8411 transitions. [2022-07-20 00:58:58,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 00:58:58,662 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 8411 transitions. [2022-07-20 00:58:58,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-20 00:58:58,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:58:58,666 INFO L195 NwaCegarLoop]: trace histogram [21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:58:58,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 00:58:58,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:58:58,883 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:58:58,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:58:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1466196661, now seen corresponding path program 1 times [2022-07-20 00:58:58,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:58:58,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406420065] [2022-07-20 00:58:58,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:58:58,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:58:58,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:58:58,890 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:58:58,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 00:59:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:59:03,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 3686 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 00:59:03,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:59:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 144 proven. 6 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2022-07-20 00:59:03,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:59:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2022-07-20 00:59:04,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:59:04,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406420065] [2022-07-20 00:59:04,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406420065] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:59:04,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:59:04,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-20 00:59:04,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848427997] [2022-07-20 00:59:04,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:59:04,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-20 00:59:04,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:59:04,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-20 00:59:04,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-20 00:59:04,857 INFO L87 Difference]: Start difference. First operand 5872 states and 8411 transitions. Second operand has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 15 states have internal predecessors, (79), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-20 00:59:06,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:59:06,929 INFO L93 Difference]: Finished difference Result 11760 states and 17103 transitions. [2022-07-20 00:59:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 00:59:06,930 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 15 states have internal predecessors, (79), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 237 [2022-07-20 00:59:06,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:59:07,038 INFO L225 Difference]: With dead ends: 11760 [2022-07-20 00:59:07,039 INFO L226 Difference]: Without dead ends: 5900 [2022-07-20 00:59:07,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-07-20 00:59:07,068 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 29 mSDsluCounter, 17626 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 19842 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-20 00:59:07,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 19842 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-20 00:59:07,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2022-07-20 00:59:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 5876. [2022-07-20 00:59:07,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 4379 states have (on average 1.3772550810687372) internal successors, (6031), 4456 states have internal predecessors, (6031), 1178 states have call successors, (1178), 317 states have call predecessors, (1178), 318 states have return successors, (1210), 1154 states have call predecessors, (1210), 1168 states have call successors, (1210) [2022-07-20 00:59:07,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 8419 transitions. [2022-07-20 00:59:07,290 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 8419 transitions. Word has length 237 [2022-07-20 00:59:07,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:59:07,291 INFO L495 AbstractCegarLoop]: Abstraction has 5876 states and 8419 transitions. [2022-07-20 00:59:07,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 15 states have internal predecessors, (79), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-20 00:59:07,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 8419 transitions. [2022-07-20 00:59:07,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-07-20 00:59:07,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:59:07,296 INFO L195 NwaCegarLoop]: trace histogram [28, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:59:07,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-20 00:59:07,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:59:07,511 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:59:07,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:59:07,512 INFO L85 PathProgramCache]: Analyzing trace with hash -558060025, now seen corresponding path program 2 times [2022-07-20 00:59:07,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:59:07,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577123751] [2022-07-20 00:59:07,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:59:07,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:59:07,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:59:07,518 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:59:07,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 00:59:10,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 00:59:10,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:59:10,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:59:10,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:59:10,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2022-07-20 00:59:10,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:59:10,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:59:10,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577123751] [2022-07-20 00:59:10,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577123751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:59:10,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:59:10,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:59:10,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324166677] [2022-07-20 00:59:10,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:59:10,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:59:10,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:59:10,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:59:10,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:59:10,232 INFO L87 Difference]: Start difference. First operand 5876 states and 8419 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-20 00:59:10,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:59:10,897 INFO L93 Difference]: Finished difference Result 16732 states and 24039 transitions. [2022-07-20 00:59:10,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:59:10,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 244 [2022-07-20 00:59:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:59:10,976 INFO L225 Difference]: With dead ends: 16732 [2022-07-20 00:59:10,976 INFO L226 Difference]: Without dead ends: 10897 [2022-07-20 00:59:11,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:59:11,003 INFO L413 NwaCegarLoop]: 2524 mSDtfsCounter, 1956 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 4680 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 00:59:11,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 4680 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 00:59:11,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10897 states. [2022-07-20 00:59:11,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10897 to 10862. [2022-07-20 00:59:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10862 states, 8077 states have (on average 1.3771202179026867) internal successors, (11123), 8224 states have internal predecessors, (11123), 2180 states have call successors, (2180), 599 states have call predecessors, (2180), 604 states have return successors, (2330), 2142 states have call predecessors, (2330), 2170 states have call successors, (2330) [2022-07-20 00:59:11,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10862 states to 10862 states and 15633 transitions. [2022-07-20 00:59:11,358 INFO L78 Accepts]: Start accepts. Automaton has 10862 states and 15633 transitions. Word has length 244 [2022-07-20 00:59:11,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:59:11,358 INFO L495 AbstractCegarLoop]: Abstraction has 10862 states and 15633 transitions. [2022-07-20 00:59:11,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-20 00:59:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 10862 states and 15633 transitions. [2022-07-20 00:59:11,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-20 00:59:11,363 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:59:11,363 INFO L195 NwaCegarLoop]: trace histogram [28, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:59:11,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-20 00:59:11,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:59:11,580 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:59:11,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:59:11,580 INFO L85 PathProgramCache]: Analyzing trace with hash 258270171, now seen corresponding path program 1 times [2022-07-20 00:59:11,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:59:11,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111089483] [2022-07-20 00:59:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:59:11,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:59:11,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:59:11,584 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:59:11,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 00:59:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:59:16,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 3731 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 00:59:16,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:59:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 459 proven. 10 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2022-07-20 00:59:16,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:59:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 31 proven. 165 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2022-07-20 00:59:18,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:59:18,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111089483] [2022-07-20 00:59:18,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111089483] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:59:18,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:59:18,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-20 00:59:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690998959] [2022-07-20 00:59:18,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:59:18,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-20 00:59:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:59:18,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-20 00:59:18,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-20 00:59:18,255 INFO L87 Difference]: Start difference. First operand 10862 states and 15633 transitions. Second operand has 17 states, 15 states have (on average 5.8) internal successors, (87), 17 states have internal predecessors, (87), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-20 00:59:20,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:59:20,786 INFO L93 Difference]: Finished difference Result 21777 states and 31928 transitions. [2022-07-20 00:59:20,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-20 00:59:20,787 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.8) internal successors, (87), 17 states have internal predecessors, (87), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 255 [2022-07-20 00:59:20,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:59:20,865 INFO L225 Difference]: With dead ends: 21777 [2022-07-20 00:59:20,866 INFO L226 Difference]: Without dead ends: 10940 [2022-07-20 00:59:20,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-07-20 00:59:20,923 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 62 mSDsluCounter, 19832 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 22048 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-20 00:59:20,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 22048 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-20 00:59:20,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10940 states. [2022-07-20 00:59:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10940 to 10878. [2022-07-20 00:59:21,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10878 states, 8092 states have (on average 1.3779041028175976) internal successors, (11150), 8239 states have internal predecessors, (11150), 2180 states have call successors, (2180), 600 states have call predecessors, (2180), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-20 00:59:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10878 states to 10878 states and 15661 transitions. [2022-07-20 00:59:21,361 INFO L78 Accepts]: Start accepts. Automaton has 10878 states and 15661 transitions. Word has length 255 [2022-07-20 00:59:21,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:59:21,362 INFO L495 AbstractCegarLoop]: Abstraction has 10878 states and 15661 transitions. [2022-07-20 00:59:21,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.8) internal successors, (87), 17 states have internal predecessors, (87), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-20 00:59:21,362 INFO L276 IsEmpty]: Start isEmpty. Operand 10878 states and 15661 transitions. [2022-07-20 00:59:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-20 00:59:21,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:59:21,366 INFO L195 NwaCegarLoop]: trace histogram [31, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:59:21,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 00:59:21,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:59:21,583 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:59:21,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:59:21,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1135204157, now seen corresponding path program 2 times [2022-07-20 00:59:21,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:59:21,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128532558] [2022-07-20 00:59:21,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:59:21,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:59:21,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:59:21,589 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:59:21,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 00:59:23,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 00:59:23,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:59:23,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:59:23,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:59:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2022-07-20 00:59:24,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:59:24,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:59:24,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128532558] [2022-07-20 00:59:24,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128532558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:59:24,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:59:24,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:59:24,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860567972] [2022-07-20 00:59:24,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:59:24,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:59:24,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:59:24,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:59:24,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:59:24,027 INFO L87 Difference]: Start difference. First operand 10878 states and 15661 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 00:59:24,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:59:24,527 INFO L93 Difference]: Finished difference Result 10904 states and 15693 transitions. [2022-07-20 00:59:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:59:24,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 258 [2022-07-20 00:59:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:59:24,587 INFO L225 Difference]: With dead ends: 10904 [2022-07-20 00:59:24,587 INFO L226 Difference]: Without dead ends: 10891 [2022-07-20 00:59:24,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:59:24,600 INFO L413 NwaCegarLoop]: 2238 mSDtfsCounter, 2218 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:59:24,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2218 Valid, 2254 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 00:59:24,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10891 states. [2022-07-20 00:59:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10891 to 10878. [2022-07-20 00:59:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10878 states, 8092 states have (on average 1.3774097874443896) internal successors, (11146), 8239 states have internal predecessors, (11146), 2180 states have call successors, (2180), 600 states have call predecessors, (2180), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-20 00:59:25,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10878 states to 10878 states and 15657 transitions. [2022-07-20 00:59:25,064 INFO L78 Accepts]: Start accepts. Automaton has 10878 states and 15657 transitions. Word has length 258 [2022-07-20 00:59:25,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:59:25,066 INFO L495 AbstractCegarLoop]: Abstraction has 10878 states and 15657 transitions. [2022-07-20 00:59:25,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 00:59:25,066 INFO L276 IsEmpty]: Start isEmpty. Operand 10878 states and 15657 transitions. [2022-07-20 00:59:25,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-20 00:59:25,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:59:25,070 INFO L195 NwaCegarLoop]: trace histogram [31, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:59:25,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 00:59:25,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:59:25,284 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:59:25,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:59:25,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1077945855, now seen corresponding path program 1 times [2022-07-20 00:59:25,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:59:25,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579205357] [2022-07-20 00:59:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:59:25,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:59:25,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:59:25,290 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:59:25,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-20 00:59:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:59:30,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 3762 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 00:59:30,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:59:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 511 proven. 15 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2022-07-20 00:59:30,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:59:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 36 proven. 207 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2022-07-20 00:59:32,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:59:32,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579205357] [2022-07-20 00:59:32,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579205357] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:59:32,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:59:32,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-20 00:59:32,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369142143] [2022-07-20 00:59:32,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:59:32,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-20 00:59:32,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:59:32,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-20 00:59:32,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-07-20 00:59:32,592 INFO L87 Difference]: Start difference. First operand 10878 states and 15657 transitions. Second operand has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-20 00:59:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:59:35,177 INFO L93 Difference]: Finished difference Result 21815 states and 31971 transitions. [2022-07-20 00:59:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-20 00:59:35,178 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 258 [2022-07-20 00:59:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:59:35,244 INFO L225 Difference]: With dead ends: 21815 [2022-07-20 00:59:35,244 INFO L226 Difference]: Without dead ends: 10964 [2022-07-20 00:59:35,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-07-20 00:59:35,302 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 98 mSDsluCounter, 22035 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 24251 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-20 00:59:35,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 24251 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-20 00:59:35,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10964 states. [2022-07-20 00:59:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10964 to 10886. [2022-07-20 00:59:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10886 states, 8100 states have (on average 1.3780246913580247) internal successors, (11162), 8247 states have internal predecessors, (11162), 2180 states have call successors, (2180), 600 states have call predecessors, (2180), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-20 00:59:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10886 states to 10886 states and 15673 transitions. [2022-07-20 00:59:35,733 INFO L78 Accepts]: Start accepts. Automaton has 10886 states and 15673 transitions. Word has length 258 [2022-07-20 00:59:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:59:35,734 INFO L495 AbstractCegarLoop]: Abstraction has 10886 states and 15673 transitions. [2022-07-20 00:59:35,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-20 00:59:35,735 INFO L276 IsEmpty]: Start isEmpty. Operand 10886 states and 15673 transitions. [2022-07-20 00:59:35,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-20 00:59:35,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:59:35,740 INFO L195 NwaCegarLoop]: trace histogram [34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:59:35,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-20 00:59:35,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:59:35,959 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:59:35,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:59:35,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1841410329, now seen corresponding path program 2 times [2022-07-20 00:59:35,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:59:35,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521935578] [2022-07-20 00:59:35,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:59:35,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:59:35,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:59:35,964 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:59:35,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-20 00:59:38,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 00:59:38,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:59:38,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:59:38,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:59:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1380 trivial. 0 not checked. [2022-07-20 00:59:40,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:59:40,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:59:40,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521935578] [2022-07-20 00:59:40,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521935578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:59:40,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:59:40,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 00:59:40,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568067241] [2022-07-20 00:59:40,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:59:40,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:59:40,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:59:40,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:59:40,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:59:40,368 INFO L87 Difference]: Start difference. First operand 10886 states and 15673 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 00:59:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:59:40,528 INFO L93 Difference]: Finished difference Result 10888 states and 15674 transitions. [2022-07-20 00:59:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:59:40,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 261 [2022-07-20 00:59:40,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:59:40,593 INFO L225 Difference]: With dead ends: 10888 [2022-07-20 00:59:40,593 INFO L226 Difference]: Without dead ends: 10885 [2022-07-20 00:59:40,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:59:40,607 INFO L413 NwaCegarLoop]: 2220 mSDtfsCounter, 2135 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:59:40,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2135 Valid, 2220 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 00:59:40,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10885 states. [2022-07-20 00:59:40,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10885 to 10885. [2022-07-20 00:59:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10885 states, 8100 states have (on average 1.3779012345679011) internal successors, (11161), 8246 states have internal predecessors, (11161), 2179 states have call successors, (2179), 600 states have call predecessors, (2179), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-20 00:59:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10885 states to 10885 states and 15671 transitions. [2022-07-20 00:59:41,060 INFO L78 Accepts]: Start accepts. Automaton has 10885 states and 15671 transitions. Word has length 261 [2022-07-20 00:59:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:59:41,061 INFO L495 AbstractCegarLoop]: Abstraction has 10885 states and 15671 transitions. [2022-07-20 00:59:41,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 00:59:41,061 INFO L276 IsEmpty]: Start isEmpty. Operand 10885 states and 15671 transitions. [2022-07-20 00:59:41,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-20 00:59:41,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:59:41,065 INFO L195 NwaCegarLoop]: trace histogram [34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:59:41,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-20 00:59:41,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:59:41,281 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:59:41,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:59:41,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1248693024, now seen corresponding path program 1 times [2022-07-20 00:59:41,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:59:41,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675300666] [2022-07-20 00:59:41,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:59:41,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:59:41,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:59:41,288 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:59:41,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-20 00:59:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:59:46,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 3796 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-20 00:59:46,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:59:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 567 proven. 21 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2022-07-20 00:59:46,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:59:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 41 proven. 254 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2022-07-20 00:59:49,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:59:49,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675300666] [2022-07-20 00:59:49,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675300666] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:59:49,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:59:49,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-20 00:59:49,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248087870] [2022-07-20 00:59:49,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:59:49,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-20 00:59:49,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:59:49,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-20 00:59:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-20 00:59:49,119 INFO L87 Difference]: Start difference. First operand 10885 states and 15671 transitions. Second operand has 21 states, 19 states have (on average 4.842105263157895) internal successors, (92), 21 states have internal predecessors, (92), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-20 00:59:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:59:52,735 INFO L93 Difference]: Finished difference Result 21845 states and 32015 transitions. [2022-07-20 00:59:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-20 00:59:52,736 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.842105263157895) internal successors, (92), 21 states have internal predecessors, (92), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 262 [2022-07-20 00:59:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:59:52,788 INFO L225 Difference]: With dead ends: 21845 [2022-07-20 00:59:52,788 INFO L226 Difference]: Without dead ends: 10987 [2022-07-20 00:59:52,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2022-07-20 00:59:52,834 INFO L413 NwaCegarLoop]: 2215 mSDtfsCounter, 79 mSDsluCounter, 33038 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 35253 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-20 00:59:52,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 35253 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-20 00:59:52,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2022-07-20 00:59:53,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 10893. [2022-07-20 00:59:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10893 states, 8108 states have (on average 1.3785150468672915) internal successors, (11177), 8254 states have internal predecessors, (11177), 2179 states have call successors, (2179), 600 states have call predecessors, (2179), 605 states have return successors, (2331), 2142 states have call predecessors, (2331), 2170 states have call successors, (2331) [2022-07-20 00:59:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10893 states to 10893 states and 15687 transitions. [2022-07-20 00:59:53,200 INFO L78 Accepts]: Start accepts. Automaton has 10893 states and 15687 transitions. Word has length 262 [2022-07-20 00:59:53,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:59:53,201 INFO L495 AbstractCegarLoop]: Abstraction has 10893 states and 15687 transitions. [2022-07-20 00:59:53,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.842105263157895) internal successors, (92), 21 states have internal predecessors, (92), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-20 00:59:53,201 INFO L276 IsEmpty]: Start isEmpty. Operand 10893 states and 15687 transitions. [2022-07-20 00:59:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-20 00:59:53,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:59:53,204 INFO L195 NwaCegarLoop]: trace histogram [37, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:59:53,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-20 00:59:53,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:59:53,423 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:59:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:59:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash -436266952, now seen corresponding path program 2 times [2022-07-20 00:59:53,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:59:53,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34984189] [2022-07-20 00:59:53,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:59:53,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:59:53,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:59:53,430 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:59:53,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-20 00:59:55,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 00:59:55,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:59:56,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:59:56,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:59:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-07-20 00:59:57,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:59:57,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:59:57,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34984189] [2022-07-20 00:59:57,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34984189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:59:57,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:59:57,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 00:59:57,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268203180] [2022-07-20 00:59:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:59:57,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:59:57,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:59:57,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:59:57,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:59:57,912 INFO L87 Difference]: Start difference. First operand 10893 states and 15687 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 00:59:58,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:59:58,431 INFO L93 Difference]: Finished difference Result 32304 states and 46568 transitions. [2022-07-20 00:59:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:59:58,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 265 [2022-07-20 00:59:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:59:58,543 INFO L225 Difference]: With dead ends: 32304 [2022-07-20 00:59:58,543 INFO L226 Difference]: Without dead ends: 21468 [2022-07-20 00:59:58,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:59:58,597 INFO L413 NwaCegarLoop]: 3054 mSDtfsCounter, 2110 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 5191 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:59:58,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 5191 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 00:59:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21468 states. [2022-07-20 00:59:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21468 to 21436. [2022-07-20 00:59:59,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21436 states, 15990 states have (on average 1.380175109443402) internal successors, (22069), 16277 states have internal predecessors, (22069), 4266 states have call successors, (4266), 1173 states have call predecessors, (4266), 1179 states have return successors, (4569), 4193 states have call predecessors, (4569), 4256 states have call successors, (4569) [2022-07-20 00:59:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21436 states to 21436 states and 30904 transitions. [2022-07-20 00:59:59,364 INFO L78 Accepts]: Start accepts. Automaton has 21436 states and 30904 transitions. Word has length 265 [2022-07-20 00:59:59,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:59:59,364 INFO L495 AbstractCegarLoop]: Abstraction has 21436 states and 30904 transitions. [2022-07-20 00:59:59,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 00:59:59,365 INFO L276 IsEmpty]: Start isEmpty. Operand 21436 states and 30904 transitions. [2022-07-20 00:59:59,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-20 00:59:59,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:59:59,368 INFO L195 NwaCegarLoop]: trace histogram [37, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:59:59,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-07-20 00:59:59,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:59:59,583 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:59:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:59:59,584 INFO L85 PathProgramCache]: Analyzing trace with hash -639821084, now seen corresponding path program 1 times [2022-07-20 00:59:59,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:59:59,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822749022] [2022-07-20 00:59:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:59:59,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:59:59,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:59:59,589 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:59:59,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-20 01:00:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:00:04,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 3830 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-20 01:00:04,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:00:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 627 proven. 28 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-07-20 01:00:04,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:00:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 46 proven. 306 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2022-07-20 01:00:07,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:00:07,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822749022] [2022-07-20 01:00:07,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822749022] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:00:07,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:00:07,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-07-20 01:00:07,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814607346] [2022-07-20 01:00:07,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:00:07,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-20 01:00:07,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:00:07,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-20 01:00:07,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-07-20 01:00:07,845 INFO L87 Difference]: Start difference. First operand 21436 states and 30904 transitions. Second operand has 23 states, 21 states have (on average 4.523809523809524) internal successors, (95), 23 states have internal predecessors, (95), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-20 01:00:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:00:11,985 INFO L93 Difference]: Finished difference Result 43083 states and 63205 transitions. [2022-07-20 01:00:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-20 01:00:11,986 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.523809523809524) internal successors, (95), 23 states have internal predecessors, (95), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 266 [2022-07-20 01:00:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:00:12,101 INFO L225 Difference]: With dead ends: 43083 [2022-07-20 01:00:12,101 INFO L226 Difference]: Without dead ends: 21674 [2022-07-20 01:00:12,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-07-20 01:00:12,207 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 121 mSDsluCounter, 26437 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 28653 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-20 01:00:12,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 28653 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-20 01:00:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21674 states. [2022-07-20 01:00:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21674 to 21452. [2022-07-20 01:00:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21452 states, 16006 states have (on average 1.380794701986755) internal successors, (22101), 16293 states have internal predecessors, (22101), 4266 states have call successors, (4266), 1173 states have call predecessors, (4266), 1179 states have return successors, (4569), 4193 states have call predecessors, (4569), 4256 states have call successors, (4569) [2022-07-20 01:00:13,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21452 states to 21452 states and 30936 transitions. [2022-07-20 01:00:13,156 INFO L78 Accepts]: Start accepts. Automaton has 21452 states and 30936 transitions. Word has length 266 [2022-07-20 01:00:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:00:13,157 INFO L495 AbstractCegarLoop]: Abstraction has 21452 states and 30936 transitions. [2022-07-20 01:00:13,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.523809523809524) internal successors, (95), 23 states have internal predecessors, (95), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-20 01:00:13,157 INFO L276 IsEmpty]: Start isEmpty. Operand 21452 states and 30936 transitions. [2022-07-20 01:00:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-20 01:00:13,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:00:13,160 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:00:13,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-20 01:00:13,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:00:13,379 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:00:13,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:00:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash 607363324, now seen corresponding path program 2 times [2022-07-20 01:00:13,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:00:13,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588420755] [2022-07-20 01:00:13,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:00:13,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:00:13,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:00:13,386 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:00:13,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-20 01:00:15,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:00:15,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:00:15,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:00:15,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:00:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2022-07-20 01:00:17,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:00:17,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:00:17,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588420755] [2022-07-20 01:00:17,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588420755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:00:17,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:00:17,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:00:17,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855856393] [2022-07-20 01:00:17,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:00:17,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:00:17,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:00:17,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:00:17,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:00:17,582 INFO L87 Difference]: Start difference. First operand 21452 states and 30936 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 01:00:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:00:17,959 INFO L93 Difference]: Finished difference Result 21454 states and 30937 transitions. [2022-07-20 01:00:17,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:00:17,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 269 [2022-07-20 01:00:17,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:00:18,036 INFO L225 Difference]: With dead ends: 21454 [2022-07-20 01:00:18,036 INFO L226 Difference]: Without dead ends: 21451 [2022-07-20 01:00:18,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:00:18,049 INFO L413 NwaCegarLoop]: 2218 mSDtfsCounter, 2131 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2131 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:00:18,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2131 Valid, 2218 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 01:00:18,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21451 states. [2022-07-20 01:00:18,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21451 to 21451. [2022-07-20 01:00:18,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21451 states, 16006 states have (on average 1.3807322254154692) internal successors, (22100), 16292 states have internal predecessors, (22100), 4265 states have call successors, (4265), 1173 states have call predecessors, (4265), 1179 states have return successors, (4569), 4193 states have call predecessors, (4569), 4256 states have call successors, (4569) [2022-07-20 01:00:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21451 states to 21451 states and 30934 transitions. [2022-07-20 01:00:18,730 INFO L78 Accepts]: Start accepts. Automaton has 21451 states and 30934 transitions. Word has length 269 [2022-07-20 01:00:18,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:00:18,731 INFO L495 AbstractCegarLoop]: Abstraction has 21451 states and 30934 transitions. [2022-07-20 01:00:18,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 01:00:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand 21451 states and 30934 transitions. [2022-07-20 01:00:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-07-20 01:00:18,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:00:18,734 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:00:18,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-07-20 01:00:18,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:00:18,955 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:00:18,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:00:18,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1647951267, now seen corresponding path program 1 times [2022-07-20 01:00:18,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:00:18,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937155508] [2022-07-20 01:00:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:00:18,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:00:18,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:00:18,962 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:00:18,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-20 01:00:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:00:29,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 3864 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:00:29,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:00:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2022-07-20 01:00:31,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:00:31,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:00:31,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937155508] [2022-07-20 01:00:31,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937155508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:00:31,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:00:31,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:00:31,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089449537] [2022-07-20 01:00:31,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:00:31,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:00:31,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:00:31,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:00:31,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:00:31,108 INFO L87 Difference]: Start difference. First operand 21451 states and 30934 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 01:00:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:00:31,647 INFO L93 Difference]: Finished difference Result 21453 states and 30935 transitions. [2022-07-20 01:00:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:00:31,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 270 [2022-07-20 01:00:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:00:31,752 INFO L225 Difference]: With dead ends: 21453 [2022-07-20 01:00:31,752 INFO L226 Difference]: Without dead ends: 21450 [2022-07-20 01:00:31,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:00:31,771 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 2128 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:00:31,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2128 Valid, 2216 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 01:00:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21450 states. [2022-07-20 01:00:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21450 to 21450. [2022-07-20 01:00:32,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21450 states, 16006 states have (on average 1.3806697488441835) internal successors, (22099), 16291 states have internal predecessors, (22099), 4264 states have call successors, (4264), 1173 states have call predecessors, (4264), 1179 states have return successors, (4569), 4193 states have call predecessors, (4569), 4256 states have call successors, (4569) [2022-07-20 01:00:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21450 states to 21450 states and 30932 transitions. [2022-07-20 01:00:32,434 INFO L78 Accepts]: Start accepts. Automaton has 21450 states and 30932 transitions. Word has length 270 [2022-07-20 01:00:32,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:00:32,435 INFO L495 AbstractCegarLoop]: Abstraction has 21450 states and 30932 transitions. [2022-07-20 01:00:32,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 01:00:32,435 INFO L276 IsEmpty]: Start isEmpty. Operand 21450 states and 30932 transitions. [2022-07-20 01:00:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-20 01:00:32,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:00:32,438 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:00:32,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-20 01:00:32,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:00:32,660 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:00:32,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:00:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash -453556001, now seen corresponding path program 1 times [2022-07-20 01:00:32,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:00:32,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808607188] [2022-07-20 01:00:32,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:00:32,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:00:32,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:00:32,664 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:00:32,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-20 01:00:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:00:42,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 3865 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:00:42,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:00:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2022-07-20 01:00:44,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:00:44,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:00:44,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808607188] [2022-07-20 01:00:44,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808607188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:00:44,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:00:44,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:00:44,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881139084] [2022-07-20 01:00:44,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:00:44,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:00:44,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:00:44,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:00:44,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:00:44,541 INFO L87 Difference]: Start difference. First operand 21450 states and 30932 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 01:00:44,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:00:44,957 INFO L93 Difference]: Finished difference Result 28013 states and 39932 transitions. [2022-07-20 01:00:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:00:44,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 271 [2022-07-20 01:00:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:00:45,195 INFO L225 Difference]: With dead ends: 28013 [2022-07-20 01:00:45,195 INFO L226 Difference]: Without dead ends: 27974 [2022-07-20 01:00:45,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:00:45,205 INFO L413 NwaCegarLoop]: 2316 mSDtfsCounter, 1883 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:00:45,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1883 Valid, 3352 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 01:00:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27974 states. [2022-07-20 01:00:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27974 to 26021. [2022-07-20 01:00:45,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26021 states, 19427 states have (on average 1.375353888917486) internal successors, (26719), 19753 states have internal predecessors, (26719), 5025 states have call successors, (5025), 1562 states have call predecessors, (5025), 1568 states have return successors, (5338), 4946 states have call predecessors, (5338), 5019 states have call successors, (5338) [2022-07-20 01:00:46,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26021 states to 26021 states and 37082 transitions. [2022-07-20 01:00:46,078 INFO L78 Accepts]: Start accepts. Automaton has 26021 states and 37082 transitions. Word has length 271 [2022-07-20 01:00:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:00:46,078 INFO L495 AbstractCegarLoop]: Abstraction has 26021 states and 37082 transitions. [2022-07-20 01:00:46,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 01:00:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 26021 states and 37082 transitions. [2022-07-20 01:00:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-07-20 01:00:46,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:00:46,100 INFO L195 NwaCegarLoop]: trace histogram [40, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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] [2022-07-20 01:00:46,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-20 01:00:46,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:00:46,320 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:00:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:00:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash -161822822, now seen corresponding path program 1 times [2022-07-20 01:00:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:00:46,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644744401] [2022-07-20 01:00:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:00:46,323 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:00:46,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:00:46,325 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:00:46,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-20 01:00:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:00:56,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 4303 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:00:56,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:00:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2022-07-20 01:00:56,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:00:56,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:00:56,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644744401] [2022-07-20 01:00:56,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644744401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:00:56,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:00:56,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:00:56,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085725996] [2022-07-20 01:00:56,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:00:56,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:00:56,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:00:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:00:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:00:56,262 INFO L87 Difference]: Start difference. First operand 26021 states and 37082 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-20 01:00:57,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:00:57,814 INFO L93 Difference]: Finished difference Result 70615 states and 100377 transitions. [2022-07-20 01:00:57,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:00:57,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 383 [2022-07-20 01:00:57,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:00:57,991 INFO L225 Difference]: With dead ends: 70615 [2022-07-20 01:00:57,991 INFO L226 Difference]: Without dead ends: 44619 [2022-07-20 01:00:58,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:00:58,065 INFO L413 NwaCegarLoop]: 3298 mSDtfsCounter, 1629 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 5404 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 01:00:58,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 5404 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 01:00:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44619 states. [2022-07-20 01:00:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44619 to 42635. [2022-07-20 01:00:59,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42635 states, 31867 states have (on average 1.3690651771424984) internal successors, (43628), 32307 states have internal predecessors, (43628), 8143 states have call successors, (8143), 2626 states have call predecessors, (8143), 2624 states have return successors, (8693), 8036 states have call predecessors, (8693), 8137 states have call successors, (8693) [2022-07-20 01:00:59,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42635 states to 42635 states and 60464 transitions. [2022-07-20 01:00:59,636 INFO L78 Accepts]: Start accepts. Automaton has 42635 states and 60464 transitions. Word has length 383 [2022-07-20 01:00:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:00:59,637 INFO L495 AbstractCegarLoop]: Abstraction has 42635 states and 60464 transitions. [2022-07-20 01:00:59,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-20 01:00:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 42635 states and 60464 transitions. [2022-07-20 01:00:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-07-20 01:00:59,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:00:59,703 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:00:59,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-20 01:00:59,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:00:59,920 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:00:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:00:59,920 INFO L85 PathProgramCache]: Analyzing trace with hash -321975785, now seen corresponding path program 1 times [2022-07-20 01:00:59,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:00:59,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2465532] [2022-07-20 01:00:59,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:00:59,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:00:59,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:00:59,925 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:00:59,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-20 01:01:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:01:10,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 4401 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 01:01:10,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:01:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1661 trivial. 0 not checked. [2022-07-20 01:01:10,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:01:10,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:01:10,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2465532] [2022-07-20 01:01:10,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2465532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:01:10,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:01:10,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:01:10,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702845568] [2022-07-20 01:01:10,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:01:10,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:01:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:01:10,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:01:10,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:01:10,740 INFO L87 Difference]: Start difference. First operand 42635 states and 60464 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-20 01:01:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:01:12,213 INFO L93 Difference]: Finished difference Result 93727 states and 134609 transitions. [2022-07-20 01:01:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:01:12,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) Word has length 414 [2022-07-20 01:01:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:01:12,429 INFO L225 Difference]: With dead ends: 93727 [2022-07-20 01:01:12,429 INFO L226 Difference]: Without dead ends: 51149 [2022-07-20 01:01:12,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:01:12,539 INFO L413 NwaCegarLoop]: 2841 mSDtfsCounter, 592 mSDsluCounter, 10802 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 13643 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:01:12,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 13643 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 01:01:12,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51149 states. [2022-07-20 01:01:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51149 to 42715. [2022-07-20 01:01:14,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42715 states, 31931 states have (on average 1.3683254517553474) internal successors, (43692), 32371 states have internal predecessors, (43692), 8143 states have call successors, (8143), 2626 states have call predecessors, (8143), 2640 states have return successors, (8757), 8052 states have call predecessors, (8757), 8137 states have call successors, (8757) [2022-07-20 01:01:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42715 states to 42715 states and 60592 transitions. [2022-07-20 01:01:14,335 INFO L78 Accepts]: Start accepts. Automaton has 42715 states and 60592 transitions. Word has length 414 [2022-07-20 01:01:14,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:01:14,336 INFO L495 AbstractCegarLoop]: Abstraction has 42715 states and 60592 transitions. [2022-07-20 01:01:14,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-20 01:01:14,336 INFO L276 IsEmpty]: Start isEmpty. Operand 42715 states and 60592 transitions. [2022-07-20 01:01:14,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-07-20 01:01:14,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:01:14,358 INFO L195 NwaCegarLoop]: trace histogram [40, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:01:14,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-20 01:01:14,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:01:14,568 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:01:14,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:01:14,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2043978471, now seen corresponding path program 1 times [2022-07-20 01:01:14,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:01:14,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111570850] [2022-07-20 01:01:14,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:01:14,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:01:14,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:01:14,574 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:01:14,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process