./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.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 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:08:11,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:08:11,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:08:11,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:08:11,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:08:11,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:08:11,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:08:11,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:08:11,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:08:11,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:08:11,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:08:11,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:08:11,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:08:11,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:08:11,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:08:11,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:08:11,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:08:11,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:08:11,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:08:11,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:08:11,193 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:08:11,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:08:11,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:08:11,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:08:11,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:08:11,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:08:11,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:08:11,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:08:11,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:08:11,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:08:11,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:08:11,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:08:11,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:08:11,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:08:11,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:08:11,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:08:11,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:08:11,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:08:11,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:08:11,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:08:11,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:08:11,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:08:11,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:08:11,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:08:11,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:08:11,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:08:11,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:08:11,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:08:11,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:08:11,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:08:11,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:08:11,237 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:08:11,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:08:11,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:08:11,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:08:11,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:08:11,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:08:11,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:08:11,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:08:11,239 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:08:11,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:08:11,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:08:11,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:08:11,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:08:11,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:08:11,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:08:11,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:08:11,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:08:11,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:08:11,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:08:11,241 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:08:11,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:08:11,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:08:11,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 [2022-07-21 11:08:11,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:08:11,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:08:11,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:08:11,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:08:11,569 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:08:11,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2022-07-21 11:08:11,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2d13ed6/161cafaaf72b4b669971ca428e1c1ea1/FLAGf860878b9 [2022-07-21 11:08:12,220 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:08:12,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2022-07-21 11:08:12,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2d13ed6/161cafaaf72b4b669971ca428e1c1ea1/FLAGf860878b9 [2022-07-21 11:08:12,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2d13ed6/161cafaaf72b4b669971ca428e1c1ea1 [2022-07-21 11:08:12,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:08:12,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:08:12,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:08:12,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:08:12,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:08:12,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:08:12" (1/1) ... [2022-07-21 11:08:12,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ca3f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:12, skipping insertion in model container [2022-07-21 11:08:12,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:08:12" (1/1) ... [2022-07-21 11:08:12,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:08:12,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:08:13,477 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2022-07-21 11:08:13,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:08:13,872 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:08:13,956 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2022-07-21 11:08:13,998 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: val = (unsigned int )val & 246U [6182] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckBinaryExpression(TypeCheckHelper.java:207) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.constructBinaryExpression(ExpressionFactory.java:597) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.newBinaryExpression(ExpressionFactory.java:132) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:483) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 11:08:14,004 INFO L158 Benchmark]: Toolchain (without parser) took 1320.72ms. Allocated memory was 54.5MB in the beginning and 96.5MB in the end (delta: 41.9MB). Free memory was 33.0MB in the beginning and 40.1MB in the end (delta: -7.1MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2022-07-21 11:08:14,004 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 35.8MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 11:08:14,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1317.65ms. Allocated memory was 54.5MB in the beginning and 96.5MB in the end (delta: 41.9MB). Free memory was 32.8MB in the beginning and 40.1MB in the end (delta: -7.3MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2022-07-21 11:08:14,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 35.8MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1317.65ms. Allocated memory was 54.5MB in the beginning and 96.5MB in the end (delta: 41.9MB). Free memory was 32.8MB in the beginning and 40.1MB in the end (delta: -7.3MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: val = (unsigned int )val & 246U [6182] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: val = (unsigned int )val & 246U [6182]: 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.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 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:08:15,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:08:15,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:08:15,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:08:15,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:08:15,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:08:15,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:08:15,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:08:15,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:08:15,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:08:15,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:08:15,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:08:15,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:08:15,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:08:15,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:08:15,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:08:15,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:08:15,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:08:15,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:08:15,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:08:15,970 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:08:15,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:08:15,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:08:15,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:08:15,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:08:15,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:08:15,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:08:15,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:08:15,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:08:15,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:08:15,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:08:15,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:08:15,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:08:15,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:08:15,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:08:15,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:08:15,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:08:15,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:08:15,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:08:15,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:08:15,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:08:15,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:08:15,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 11:08:16,023 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:08:16,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:08:16,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:08:16,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:08:16,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:08:16,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:08:16,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:08:16,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:08:16,027 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:08:16,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:08:16,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:08:16,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:08:16,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:08:16,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:08:16,028 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 11:08:16,029 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 11:08:16,029 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 11:08:16,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:08:16,029 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:08:16,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:08:16,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:08:16,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:08:16,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:08:16,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:08:16,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:08:16,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:08:16,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:08:16,031 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 11:08:16,031 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 11:08:16,031 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:08:16,032 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:08:16,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:08:16,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 11:08:16,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 [2022-07-21 11:08:16,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:08:16,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:08:16,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:08:16,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:08:16,340 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:08:16,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2022-07-21 11:08:16,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d755a231/eddc013313494d8f8f3fbecc8799bb31/FLAG214708fac [2022-07-21 11:08:16,995 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:08:16,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2022-07-21 11:08:17,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d755a231/eddc013313494d8f8f3fbecc8799bb31/FLAG214708fac [2022-07-21 11:08:17,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d755a231/eddc013313494d8f8f3fbecc8799bb31 [2022-07-21 11:08:17,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:08:17,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:08:17,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:08:17,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:08:17,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:08:17,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:08:17" (1/1) ... [2022-07-21 11:08:17,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40df3989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:17, skipping insertion in model container [2022-07-21 11:08:17,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:08:17" (1/1) ... [2022-07-21 11:08:17,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:08:17,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:08:18,182 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2022-07-21 11:08:18,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:08:18,510 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 11:08:18,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:08:18,643 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2022-07-21 11:08:18,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:08:18,742 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:08:18,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2022-07-21 11:08:18,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:08:19,000 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:08:19,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:19 WrapperNode [2022-07-21 11:08:19,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:08:19,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:08:19,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:08:19,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:08:19,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:19" (1/1) ... [2022-07-21 11:08:19,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:19" (1/1) ... [2022-07-21 11:08:19,174 INFO L137 Inliner]: procedures = 152, calls = 1066, calls flagged for inlining = 55, calls inlined = 52, statements flattened = 1815 [2022-07-21 11:08:19,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:08:19,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:08:19,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:08:19,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:08:19,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:19" (1/1) ... [2022-07-21 11:08:19,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:19" (1/1) ... [2022-07-21 11:08:19,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:19" (1/1) ... [2022-07-21 11:08:19,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:19" (1/1) ... [2022-07-21 11:08:19,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:19" (1/1) ... [2022-07-21 11:08:19,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:19" (1/1) ... [2022-07-21 11:08:19,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:19" (1/1) ... [2022-07-21 11:08:19,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:08:19,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:08:19,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:08:19,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:08:19,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:19" (1/1) ... [2022-07-21 11:08:19,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:08:19,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:08:19,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 11:08:19,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 11:08:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 11:08:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure devm_request_threaded_irq [2022-07-21 11:08:19,401 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_request_threaded_irq [2022-07-21 11:08:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 11:08:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 11:08:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 11:08:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 11:08:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:08:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:08:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure write_long_reg [2022-07-21 11:08:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure write_long_reg [2022-07-21 11:08:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-07-21 11:08:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-07-21 11:08:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 11:08:19,403 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 11:08:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-21 11:08:19,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-21 11:08:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-07-21 11:08:19,403 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-07-21 11:08:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:08:19,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:08:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-21 11:08:19,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-21 11:08:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 11:08:19,404 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 11:08:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:08:19,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:08:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 11:08:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 11:08:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 11:08:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 11:08:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:08:19,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:08:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_set_channel [2022-07-21 11:08:19,406 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_set_channel [2022-07-21 11:08:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-07-21 11:08:19,407 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-07-21 11:08:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:08:19,407 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:08:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure write_short_reg [2022-07-21 11:08:19,408 INFO L138 BoogieDeclarations]: Found implementation of procedure write_short_reg [2022-07-21 11:08:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:08:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:08:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure ieee802154_unregister_device [2022-07-21 11:08:19,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee802154_unregister_device [2022-07-21 11:08:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-21 11:08:19,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-21 11:08:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:08:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:08:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 11:08:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 11:08:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-21 11:08:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-21 11:08:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-07-21 11:08:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-07-21 11:08:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 11:08:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-07-21 11:08:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-07-21 11:08:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure read_short_reg [2022-07-21 11:08:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure read_short_reg [2022-07-21 11:08:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_filter [2022-07-21 11:08:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_filter [2022-07-21 11:08:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:08:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-21 11:08:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-21 11:08:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 11:08:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 11:08:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 11:08:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:08:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 11:08:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-07-21 11:08:19,413 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-07-21 11:08:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:08:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-21 11:08:19,413 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-21 11:08:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-07-21 11:08:19,414 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-07-21 11:08:19,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 11:08:19,414 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_tx [2022-07-21 11:08:19,414 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_tx [2022-07-21 11:08:19,414 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_isr [2022-07-21 11:08:19,414 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_isr [2022-07-21 11:08:19,415 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_ed [2022-07-21 11:08:19,415 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_ed [2022-07-21 11:08:19,415 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-21 11:08:19,415 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-21 11:08:19,415 INFO L130 BoogieDeclarations]: Found specification of procedure ieee802154_free_device [2022-07-21 11:08:19,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee802154_free_device [2022-07-21 11:08:19,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 11:08:19,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 11:08:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 11:08:19,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:08:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:08:19,835 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:08:19,837 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:08:22,295 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:08:54,048 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:08:54,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:08:54,062 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-21 11:08:54,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:08:54 BoogieIcfgContainer [2022-07-21 11:08:54,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:08:54,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:08:54,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:08:54,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:08:54,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:08:17" (1/3) ... [2022-07-21 11:08:54,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e401121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:08:54, skipping insertion in model container [2022-07-21 11:08:54,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:19" (2/3) ... [2022-07-21 11:08:54,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e401121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:08:54, skipping insertion in model container [2022-07-21 11:08:54,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:08:54" (3/3) ... [2022-07-21 11:08:54,071 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2022-07-21 11:08:54,082 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:08:54,082 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:08:54,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:08:54,135 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@404ef391, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@258b0967 [2022-07-21 11:08:54,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:08:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 621 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 453 states have internal predecessors, (601), 148 states have call successors, (148), 33 states have call predecessors, (148), 32 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2022-07-21 11:08:54,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-21 11:08:54,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:08:54,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:08:54,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:08:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:08:54,158 INFO L85 PathProgramCache]: Analyzing trace with hash -829070541, now seen corresponding path program 1 times [2022-07-21 11:08:54,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:08:54,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113786851] [2022-07-21 11:08:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:08:54,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:08:54,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:08:54,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:08:54,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 11:08:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:08:54,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:08:54,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:08:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 11:08:55,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:08:55,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:08:55,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113786851] [2022-07-21 11:08:55,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113786851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:08:55,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:08:55,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:08:55,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249936132] [2022-07-21 11:08:55,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:08:55,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:08:55,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:08:55,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:08:55,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:08:55,134 INFO L87 Difference]: Start difference. First operand has 621 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 453 states have internal predecessors, (601), 148 states have call successors, (148), 33 states have call predecessors, (148), 32 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:08:57,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:08:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:08:57,702 INFO L93 Difference]: Finished difference Result 1823 states and 2771 transitions. [2022-07-21 11:08:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:08:57,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-07-21 11:08:57,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:08:57,745 INFO L225 Difference]: With dead ends: 1823 [2022-07-21 11:08:57,745 INFO L226 Difference]: Without dead ends: 1183 [2022-07-21 11:08:57,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:08:57,759 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 831 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:08:57,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1881 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-21 11:08:57,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-07-21 11:08:57,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2022-07-21 11:08:57,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 846 states have (on average 1.3321513002364067) internal successors, (1127), 854 states have internal predecessors, (1127), 274 states have call successors, (274), 63 states have call predecessors, (274), 62 states have return successors, (273), 273 states have call predecessors, (273), 273 states have call successors, (273) [2022-07-21 11:08:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1674 transitions. [2022-07-21 11:08:57,885 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1674 transitions. Word has length 37 [2022-07-21 11:08:57,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:08:57,886 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1674 transitions. [2022-07-21 11:08:57,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:08:57,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1674 transitions. [2022-07-21 11:08:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 11:08:57,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:08:57,893 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:08:57,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 11:08:58,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:08:58,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:08:58,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:08:58,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1782235712, now seen corresponding path program 1 times [2022-07-21 11:08:58,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:08:58,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013656992] [2022-07-21 11:08:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:08:58,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:08:58,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:08:58,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:08:58,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 11:08:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:08:58,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:08:58,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:08:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 11:08:59,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:08:59,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:08:59,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013656992] [2022-07-21 11:08:59,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013656992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:08:59,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:08:59,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:08:59,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632634513] [2022-07-21 11:08:59,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:08:59,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:08:59,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:08:59,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:08:59,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:08:59,526 INFO L87 Difference]: Start difference. First operand 1183 states and 1674 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:09:00,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:00,642 INFO L93 Difference]: Finished difference Result 3526 states and 5042 transitions. [2022-07-21 11:09:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:09:00,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-07-21 11:09:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:00,670 INFO L225 Difference]: With dead ends: 3526 [2022-07-21 11:09:00,670 INFO L226 Difference]: Without dead ends: 2346 [2022-07-21 11:09:00,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:09:00,677 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 835 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 3971 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:00,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 3971 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 11:09:00,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2022-07-21 11:09:00,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2338. [2022-07-21 11:09:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1669 states have (on average 1.3319352905931696) internal successors, (2223), 1685 states have internal predecessors, (2223), 544 states have call successors, (544), 125 states have call predecessors, (544), 124 states have return successors, (569), 543 states have call predecessors, (569), 543 states have call successors, (569) [2022-07-21 11:09:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3336 transitions. [2022-07-21 11:09:00,761 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3336 transitions. Word has length 39 [2022-07-21 11:09:00,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:00,763 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 3336 transitions. [2022-07-21 11:09:00,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:09:00,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3336 transitions. [2022-07-21 11:09:00,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-21 11:09:00,777 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:00,777 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:09:00,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 11:09:00,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:09:00,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:00,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:00,985 INFO L85 PathProgramCache]: Analyzing trace with hash -353908813, now seen corresponding path program 1 times [2022-07-21 11:09:00,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:09:00,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267750482] [2022-07-21 11:09:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:00,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:09:00,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:09:01,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:09:01,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 11:09:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:02,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:09:02,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:09:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 11:09:10,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:09:10,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:09:10,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267750482] [2022-07-21 11:09:10,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267750482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:10,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:10,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:09:10,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832555761] [2022-07-21 11:09:10,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:10,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:09:10,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:09:10,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:09:10,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:09:10,685 INFO L87 Difference]: Start difference. First operand 2338 states and 3336 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:09:12,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:09:14,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:09:26,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:26,774 INFO L93 Difference]: Finished difference Result 4694 states and 6715 transitions. [2022-07-21 11:09:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:09:26,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 233 [2022-07-21 11:09:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:26,807 INFO L225 Difference]: With dead ends: 4694 [2022-07-21 11:09:26,808 INFO L226 Difference]: Without dead ends: 2366 [2022-07-21 11:09:26,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:09:26,819 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 748 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:26,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1957 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 587 Invalid, 2 Unknown, 0 Unchecked, 15.7s Time] [2022-07-21 11:09:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2022-07-21 11:09:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2358. [2022-07-21 11:09:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 1683 states have (on average 1.3303624480095069) internal successors, (2239), 1705 states have internal predecessors, (2239), 544 states have call successors, (544), 125 states have call predecessors, (544), 130 states have return successors, (585), 543 states have call predecessors, (585), 543 states have call successors, (585) [2022-07-21 11:09:26,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 3368 transitions. [2022-07-21 11:09:26,908 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 3368 transitions. Word has length 233 [2022-07-21 11:09:26,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:26,910 INFO L495 AbstractCegarLoop]: Abstraction has 2358 states and 3368 transitions. [2022-07-21 11:09:26,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:09:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 3368 transitions. [2022-07-21 11:09:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-21 11:09:26,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:26,919 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:09:26,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 11:09:27,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:09:27,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:27,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash -482558547, now seen corresponding path program 1 times [2022-07-21 11:09:27,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:09:27,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998712414] [2022-07-21 11:09:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:27,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:09:27,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:09:27,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:09:27,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 11:09:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:29,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 2758 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:09:29,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:09:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 11:09:38,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:09:38,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:09:38,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998712414] [2022-07-21 11:09:38,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998712414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:38,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:38,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:09:38,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122500297] [2022-07-21 11:09:38,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:38,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:09:38,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:09:38,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:09:38,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:09:38,616 INFO L87 Difference]: Start difference. First operand 2358 states and 3368 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:09:40,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:09:42,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:09:54,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:54,643 INFO L93 Difference]: Finished difference Result 7082 states and 10142 transitions. [2022-07-21 11:09:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:09:54,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 230 [2022-07-21 11:09:54,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:54,665 INFO L225 Difference]: With dead ends: 7082 [2022-07-21 11:09:54,666 INFO L226 Difference]: Without dead ends: 4734 [2022-07-21 11:09:54,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:09:54,676 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 771 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:54,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 2930 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 590 Invalid, 2 Unknown, 0 Unchecked, 15.6s Time] [2022-07-21 11:09:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2022-07-21 11:09:54,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 4716. [2022-07-21 11:09:54,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4716 states, 3365 states have (on average 1.3295690936106983) internal successors, (4474), 3415 states have internal predecessors, (4474), 1084 states have call successors, (1084), 249 states have call predecessors, (1084), 266 states have return successors, (1187), 1083 states have call predecessors, (1187), 1083 states have call successors, (1187) [2022-07-21 11:09:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4716 states to 4716 states and 6745 transitions. [2022-07-21 11:09:54,798 INFO L78 Accepts]: Start accepts. Automaton has 4716 states and 6745 transitions. Word has length 230 [2022-07-21 11:09:54,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:54,799 INFO L495 AbstractCegarLoop]: Abstraction has 4716 states and 6745 transitions. [2022-07-21 11:09:54,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:09:54,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4716 states and 6745 transitions. [2022-07-21 11:09:54,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-21 11:09:54,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:54,806 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:09:54,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 11:09:55,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:09:55,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:55,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:55,032 INFO L85 PathProgramCache]: Analyzing trace with hash 792522176, now seen corresponding path program 1 times [2022-07-21 11:09:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:09:55,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718518200] [2022-07-21 11:09:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:55,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:09:55,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:09:55,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:09:55,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 11:09:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:56,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:09:56,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 11:10:04,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:04,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:10:04,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718518200] [2022-07-21 11:10:04,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718518200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:04,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:04,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:10:04,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595327136] [2022-07-21 11:10:04,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:04,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:10:04,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:10:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:10:04,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:10:04,625 INFO L87 Difference]: Start difference. First operand 4716 states and 6745 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:10:06,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:10:08,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:10:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:20,501 INFO L93 Difference]: Finished difference Result 11790 states and 16874 transitions. [2022-07-21 11:10:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:10:20,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 228 [2022-07-21 11:10:20,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:20,532 INFO L225 Difference]: With dead ends: 11790 [2022-07-21 11:10:20,532 INFO L226 Difference]: Without dead ends: 7084 [2022-07-21 11:10:20,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:10:20,550 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 769 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:20,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 2922 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 587 Invalid, 2 Unknown, 0 Unchecked, 15.4s Time] [2022-07-21 11:10:20,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7084 states. [2022-07-21 11:10:20,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7084 to 7066. [2022-07-21 11:10:20,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7066 states, 5039 states have (on average 1.3282397301051796) internal successors, (6693), 5117 states have internal predecessors, (6693), 1624 states have call successors, (1624), 373 states have call predecessors, (1624), 402 states have return successors, (1781), 1623 states have call predecessors, (1781), 1623 states have call successors, (1781) [2022-07-21 11:10:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7066 states to 7066 states and 10098 transitions. [2022-07-21 11:10:20,753 INFO L78 Accepts]: Start accepts. Automaton has 7066 states and 10098 transitions. Word has length 228 [2022-07-21 11:10:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:20,753 INFO L495 AbstractCegarLoop]: Abstraction has 7066 states and 10098 transitions. [2022-07-21 11:10:20,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:10:20,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7066 states and 10098 transitions. [2022-07-21 11:10:20,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-21 11:10:20,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:20,763 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:10:20,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 11:10:20,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:10:20,987 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:20,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1627636270, now seen corresponding path program 1 times [2022-07-21 11:10:20,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:10:20,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737743063] [2022-07-21 11:10:20,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:20,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:10:20,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:10:21,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:10:21,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 11:10:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:22,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2758 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:10:22,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 11:10:30,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:30,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:10:30,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737743063] [2022-07-21 11:10:30,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737743063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:30,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:30,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:10:30,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029847642] [2022-07-21 11:10:30,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:30,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:10:30,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:10:30,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:10:30,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:10:30,521 INFO L87 Difference]: Start difference. First operand 7066 states and 10098 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:10:32,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:10:34,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:10:45,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:45,757 INFO L93 Difference]: Finished difference Result 21202 states and 30310 transitions. [2022-07-21 11:10:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:10:45,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 230 [2022-07-21 11:10:45,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:45,904 INFO L225 Difference]: With dead ends: 21202 [2022-07-21 11:10:45,904 INFO L226 Difference]: Without dead ends: 14146 [2022-07-21 11:10:45,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:10:45,924 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 747 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:45,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 3243 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 605 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2022-07-21 11:10:45,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14146 states. [2022-07-21 11:10:46,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14146 to 14064. [2022-07-21 11:10:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14064 states, 10015 states have (on average 1.330204692960559) internal successors, (13322), 10219 states have internal predecessors, (13322), 3244 states have call successors, (3244), 745 states have call predecessors, (3244), 804 states have return successors, (3535), 3195 states have call predecessors, (3535), 3243 states have call successors, (3535) [2022-07-21 11:10:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14064 states to 14064 states and 20101 transitions. [2022-07-21 11:10:46,408 INFO L78 Accepts]: Start accepts. Automaton has 14064 states and 20101 transitions. Word has length 230 [2022-07-21 11:10:46,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:46,408 INFO L495 AbstractCegarLoop]: Abstraction has 14064 states and 20101 transitions. [2022-07-21 11:10:46,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:10:46,409 INFO L276 IsEmpty]: Start isEmpty. Operand 14064 states and 20101 transitions. [2022-07-21 11:10:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-21 11:10:46,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:46,420 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:10:46,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 11:10:46,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:10:46,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:46,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:46,644 INFO L85 PathProgramCache]: Analyzing trace with hash 27161038, now seen corresponding path program 1 times [2022-07-21 11:10:46,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:10:46,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274924195] [2022-07-21 11:10:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:46,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:10:46,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:10:46,647 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:10:46,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 11:10:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:48,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:10:48,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 11:10:56,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:56,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:10:56,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274924195] [2022-07-21 11:10:56,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274924195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:56,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:56,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:10:56,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790724487] [2022-07-21 11:10:56,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:56,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:10:56,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:10:56,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:10:56,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:10:56,097 INFO L87 Difference]: Start difference. First operand 14064 states and 20101 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:10:58,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:00,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:11,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:11:11,622 INFO L93 Difference]: Finished difference Result 32852 states and 46981 transitions. [2022-07-21 11:11:11,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:11:11,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 229 [2022-07-21 11:11:11,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:11:11,694 INFO L225 Difference]: With dead ends: 32852 [2022-07-21 11:11:11,695 INFO L226 Difference]: Without dead ends: 18798 [2022-07-21 11:11:11,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:11:11,797 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 757 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:11:11,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 3082 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 589 Invalid, 2 Unknown, 0 Unchecked, 15.0s Time] [2022-07-21 11:11:11,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18798 states. [2022-07-21 11:11:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18798 to 18756. [2022-07-21 11:11:12,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18756 states, 13355 states have (on average 1.32983901160614) internal successors, (17760), 13631 states have internal predecessors, (17760), 4324 states have call successors, (4324), 993 states have call predecessors, (4324), 1076 states have return successors, (4699), 4259 states have call predecessors, (4699), 4323 states have call successors, (4699) [2022-07-21 11:11:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18756 states to 18756 states and 26783 transitions. [2022-07-21 11:11:12,271 INFO L78 Accepts]: Start accepts. Automaton has 18756 states and 26783 transitions. Word has length 229 [2022-07-21 11:11:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:11:12,272 INFO L495 AbstractCegarLoop]: Abstraction has 18756 states and 26783 transitions. [2022-07-21 11:11:12,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:11:12,272 INFO L276 IsEmpty]: Start isEmpty. Operand 18756 states and 26783 transitions. [2022-07-21 11:11:12,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-21 11:11:12,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:11:12,283 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:11:12,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 11:11:12,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:11:12,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:11:12,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:11:12,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1343364159, now seen corresponding path program 1 times [2022-07-21 11:11:12,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:11:12,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358144890] [2022-07-21 11:11:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:11:12,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:11:12,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:11:12,508 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:11:12,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 11:11:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:14,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:11:14,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:11:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 11:11:22,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:11:22,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:11:22,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358144890] [2022-07-21 11:11:22,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358144890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:11:22,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:11:22,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:11:22,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170927996] [2022-07-21 11:11:22,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:11:22,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:11:22,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:11:22,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:11:22,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:11:22,610 INFO L87 Difference]: Start difference. First operand 18756 states and 26783 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:11:24,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:26,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:37,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:11:37,764 INFO L93 Difference]: Finished difference Result 41291 states and 58904 transitions. [2022-07-21 11:11:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:11:37,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 227 [2022-07-21 11:11:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:11:37,898 INFO L225 Difference]: With dead ends: 41291 [2022-07-21 11:11:37,899 INFO L226 Difference]: Without dead ends: 22425 [2022-07-21 11:11:37,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:11:37,994 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 762 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:11:37,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 2911 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 583 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2022-07-21 11:11:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22425 states. [2022-07-21 11:11:38,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22425 to 22391. [2022-07-21 11:11:38,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22391 states, 15914 states have (on average 1.3271961794646223) internal successors, (21121), 16250 states have internal predecessors, (21121), 5182 states have call successors, (5182), 1203 states have call predecessors, (5182), 1294 states have return successors, (5605), 5083 states have call predecessors, (5605), 5181 states have call successors, (5605) [2022-07-21 11:11:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22391 states to 22391 states and 31908 transitions. [2022-07-21 11:11:38,776 INFO L78 Accepts]: Start accepts. Automaton has 22391 states and 31908 transitions. Word has length 227 [2022-07-21 11:11:38,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:11:38,776 INFO L495 AbstractCegarLoop]: Abstraction has 22391 states and 31908 transitions. [2022-07-21 11:11:38,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:11:38,777 INFO L276 IsEmpty]: Start isEmpty. Operand 22391 states and 31908 transitions. [2022-07-21 11:11:38,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-21 11:11:38,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:11:38,794 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:11:38,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 11:11:39,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:11:39,013 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:11:39,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:11:39,013 INFO L85 PathProgramCache]: Analyzing trace with hash -97457434, now seen corresponding path program 1 times [2022-07-21 11:11:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:11:39,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395559943] [2022-07-21 11:11:39,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:11:39,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:11:39,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:11:39,016 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:11:39,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 11:11:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:41,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:11:41,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:11:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 11:11:49,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:11:49,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:11:49,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395559943] [2022-07-21 11:11:49,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395559943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:11:49,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:11:49,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:11:49,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484710890] [2022-07-21 11:11:49,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:11:49,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:11:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:11:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:11:49,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:11:49,140 INFO L87 Difference]: Start difference. First operand 22391 states and 31908 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:11:51,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:53,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:04,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:12:04,303 INFO L93 Difference]: Finished difference Result 34135 states and 48683 transitions. [2022-07-21 11:12:04,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:12:04,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 231 [2022-07-21 11:12:04,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:12:04,386 INFO L225 Difference]: With dead ends: 34135 [2022-07-21 11:12:04,386 INFO L226 Difference]: Without dead ends: 22471 [2022-07-21 11:12:04,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:12:04,416 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 759 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:12:04,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1957 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 584 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2022-07-21 11:12:04,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22471 states. [2022-07-21 11:12:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22471 to 22391. [2022-07-21 11:12:04,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22391 states, 15914 states have (on average 1.3271961794646223) internal successors, (21121), 16250 states have internal predecessors, (21121), 5182 states have call successors, (5182), 1203 states have call predecessors, (5182), 1294 states have return successors, (5529), 5083 states have call predecessors, (5529), 5181 states have call successors, (5529) [2022-07-21 11:12:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22391 states to 22391 states and 31832 transitions. [2022-07-21 11:12:05,021 INFO L78 Accepts]: Start accepts. Automaton has 22391 states and 31832 transitions. Word has length 231 [2022-07-21 11:12:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:12:05,022 INFO L495 AbstractCegarLoop]: Abstraction has 22391 states and 31832 transitions. [2022-07-21 11:12:05,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:12:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 22391 states and 31832 transitions. [2022-07-21 11:12:05,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-21 11:12:05,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:12:05,038 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 11:12:05,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 11:12:05,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:12:05,263 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:12:05,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:12:05,264 INFO L85 PathProgramCache]: Analyzing trace with hash -294115493, now seen corresponding path program 1 times [2022-07-21 11:12:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:12:05,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444506712] [2022-07-21 11:12:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:12:05,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:12:05,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:12:05,266 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:12:05,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 11:12:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:07,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:12:07,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:12:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 11:12:15,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:12:15,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:12:15,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444506712] [2022-07-21 11:12:15,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444506712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:12:15,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:12:15,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:12:15,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804494878] [2022-07-21 11:12:15,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:12:15,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:12:15,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:12:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:12:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:12:15,406 INFO L87 Difference]: Start difference. First operand 22391 states and 31832 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:12:17,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:19,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:30,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:12:30,486 INFO L93 Difference]: Finished difference Result 34135 states and 48547 transitions. [2022-07-21 11:12:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:12:30,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 232 [2022-07-21 11:12:30,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:12:30,565 INFO L225 Difference]: With dead ends: 34135 [2022-07-21 11:12:30,565 INFO L226 Difference]: Without dead ends: 21674 [2022-07-21 11:12:30,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:12:30,606 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 771 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:12:30,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1957 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 581 Invalid, 2 Unknown, 0 Unchecked, 14.3s Time] [2022-07-21 11:12:30,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21674 states. [2022-07-21 11:12:31,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21674 to 21634. [2022-07-21 11:12:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21634 states, 15337 states have (on average 1.3254873834517833) internal successors, (20329), 15645 states have internal predecessors, (20329), 5067 states have call successors, (5067), 1170 states have call predecessors, (5067), 1229 states have return successors, (5322), 4964 states have call predecessors, (5322), 5066 states have call successors, (5322) [2022-07-21 11:12:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21634 states to 21634 states and 30718 transitions. [2022-07-21 11:12:31,303 INFO L78 Accepts]: Start accepts. Automaton has 21634 states and 30718 transitions. Word has length 232 [2022-07-21 11:12:31,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:12:31,304 INFO L495 AbstractCegarLoop]: Abstraction has 21634 states and 30718 transitions. [2022-07-21 11:12:31,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:12:31,304 INFO L276 IsEmpty]: Start isEmpty. Operand 21634 states and 30718 transitions. [2022-07-21 11:12:31,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-21 11:12:31,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:12:31,322 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:12:31,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 11:12:31,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:12:31,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:12:31,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:12:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash 760499356, now seen corresponding path program 1 times [2022-07-21 11:12:31,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:12:31,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242004307] [2022-07-21 11:12:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:12:31,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:12:31,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:12:31,550 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:12:31,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 11:12:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:33,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 2788 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 11:12:33,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:12:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-07-21 11:12:42,368 INFO L328 TraceCheckSpWp]: Computing backward predicates...