./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.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 10fde7a37a019b1c929db0077997db096e3fd4889a12d96c2c2befe2c5cd6fdf --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 00:07:10,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 00:07:10,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 00:07:10,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 00:07:10,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 00:07:10,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 00:07:10,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 00:07:10,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 00:07:10,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 00:07:10,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 00:07:10,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 00:07:10,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 00:07:10,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 00:07:10,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 00:07:10,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 00:07:10,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 00:07:10,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 00:07:10,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 00:07:10,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 00:07:10,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 00:07:10,970 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 00:07:10,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 00:07:10,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 00:07:10,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 00:07:10,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 00:07:10,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 00:07:10,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 00:07:10,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 00:07:10,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 00:07:10,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 00:07:10,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 00:07:10,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 00:07:10,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 00:07:10,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 00:07:10,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 00:07:10,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 00:07:10,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 00:07:10,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 00:07:10,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 00:07:10,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 00:07:10,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 00:07:10,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 00:07:10,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-23 00:07:11,011 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 00:07:11,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 00:07:11,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 00:07:11,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 00:07:11,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 00:07:11,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 00:07:11,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 00:07:11,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 00:07:11,013 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 00:07:11,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 00:07:11,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 00:07:11,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 00:07:11,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 00:07:11,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 00:07:11,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 00:07:11,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 00:07:11,015 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 00:07:11,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 00:07:11,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 00:07:11,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 00:07:11,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 00:07:11,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 00:07:11,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 00:07:11,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 00:07:11,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 00:07:11,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 00:07:11,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 00:07:11,017 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 00:07:11,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 00:07:11,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 00:07:11,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10fde7a37a019b1c929db0077997db096e3fd4889a12d96c2c2befe2c5cd6fdf [2022-07-23 00:07:11,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 00:07:11,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 00:07:11,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 00:07:11,250 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 00:07:11,251 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 00:07:11,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2022-07-23 00:07:11,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708a7effb/ccbd36c0646b4cccb1268ab2c97cec1f/FLAG10221aee1 [2022-07-23 00:07:11,884 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 00:07:11,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2022-07-23 00:07:11,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708a7effb/ccbd36c0646b4cccb1268ab2c97cec1f/FLAG10221aee1 [2022-07-23 00:07:12,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708a7effb/ccbd36c0646b4cccb1268ab2c97cec1f [2022-07-23 00:07:12,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 00:07:12,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 00:07:12,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 00:07:12,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 00:07:12,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 00:07:12,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:07:12" (1/1) ... [2022-07-23 00:07:12,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d1f982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:12, skipping insertion in model container [2022-07-23 00:07:12,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:07:12" (1/1) ... [2022-07-23 00:07:12,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 00:07:12,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 00:07:12,490 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2022-07-23 00:07:12,491 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2022-07-23 00:07:12,678 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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2022-07-23 00:07:13,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 00:07:13,303 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 00:07:13,469 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2022-07-23 00:07:13,470 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2022-07-23 00:07:13,484 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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2022-07-23 00:07:13,662 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: cfgpmcsr = cfgpmcsr & 4294967039U [8277] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckBinaryExpression(TypeCheckHelper.java:207) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.constructBinaryExpression(ExpressionFactory.java:597) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.newBinaryExpression(ExpressionFactory.java:132) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:483) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-23 00:07:13,670 INFO L158 Benchmark]: Toolchain (without parser) took 1618.24ms. Allocated memory was 96.5MB in the beginning and 138.4MB in the end (delta: 41.9MB). Free memory was 70.4MB in the beginning and 70.8MB in the end (delta: -376.9kB). Peak memory consumption was 67.8MB. Max. memory is 16.1GB. [2022-07-23 00:07:13,670 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 96.5MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 00:07:13,672 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1614.86ms. Allocated memory was 96.5MB in the beginning and 138.4MB in the end (delta: 41.9MB). Free memory was 70.4MB in the beginning and 70.8MB in the end (delta: -376.9kB). Peak memory consumption was 67.8MB. Max. memory is 16.1GB. [2022-07-23 00:07:13,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 96.5MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1614.86ms. Allocated memory was 96.5MB in the beginning and 138.4MB in the end (delta: 41.9MB). Free memory was 70.4MB in the beginning and 70.8MB in the end (delta: -376.9kB). Peak memory consumption was 67.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: cfgpmcsr = cfgpmcsr & 4294967039U [8277] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: cfgpmcsr = cfgpmcsr & 4294967039U [8277]: 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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.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 10fde7a37a019b1c929db0077997db096e3fd4889a12d96c2c2befe2c5cd6fdf --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 00:07:15,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 00:07:15,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 00:07:15,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 00:07:15,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 00:07:15,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 00:07:15,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 00:07:15,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 00:07:15,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 00:07:15,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 00:07:15,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 00:07:15,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 00:07:15,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 00:07:15,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 00:07:15,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 00:07:15,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 00:07:15,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 00:07:15,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 00:07:15,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 00:07:15,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 00:07:15,299 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 00:07:15,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 00:07:15,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 00:07:15,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 00:07:15,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 00:07:15,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 00:07:15,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 00:07:15,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 00:07:15,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 00:07:15,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 00:07:15,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 00:07:15,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 00:07:15,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 00:07:15,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 00:07:15,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 00:07:15,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 00:07:15,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 00:07:15,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 00:07:15,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 00:07:15,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 00:07:15,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 00:07:15,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 00:07:15,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-23 00:07:15,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 00:07:15,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 00:07:15,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 00:07:15,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 00:07:15,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 00:07:15,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 00:07:15,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 00:07:15,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 00:07:15,330 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 00:07:15,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 00:07:15,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 00:07:15,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 00:07:15,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 00:07:15,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 00:07:15,332 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 00:07:15,332 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 00:07:15,332 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 00:07:15,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 00:07:15,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 00:07:15,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 00:07:15,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 00:07:15,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 00:07:15,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 00:07:15,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 00:07:15,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 00:07:15,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 00:07:15,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 00:07:15,334 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 00:07:15,334 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 00:07:15,334 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 00:07:15,335 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 00:07:15,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 00:07:15,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 00:07:15,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10fde7a37a019b1c929db0077997db096e3fd4889a12d96c2c2befe2c5cd6fdf [2022-07-23 00:07:15,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 00:07:15,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 00:07:15,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 00:07:15,658 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 00:07:15,659 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 00:07:15,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2022-07-23 00:07:15,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/087f992c3/abb7bfa5010048dc97c755bf19d1d1a6/FLAG2d3f5da42 [2022-07-23 00:07:16,405 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 00:07:16,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2022-07-23 00:07:16,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/087f992c3/abb7bfa5010048dc97c755bf19d1d1a6/FLAG2d3f5da42 [2022-07-23 00:07:16,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/087f992c3/abb7bfa5010048dc97c755bf19d1d1a6 [2022-07-23 00:07:16,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 00:07:16,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 00:07:16,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 00:07:16,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 00:07:16,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 00:07:16,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:07:16" (1/1) ... [2022-07-23 00:07:16,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b3f3adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:16, skipping insertion in model container [2022-07-23 00:07:16,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:07:16" (1/1) ... [2022-07-23 00:07:16,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 00:07:16,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 00:07:17,092 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2022-07-23 00:07:17,092 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2022-07-23 00:07:17,310 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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2022-07-23 00:07:17,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 00:07:18,012 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 00:07:18,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 00:07:18,099 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2022-07-23 00:07:18,115 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2022-07-23 00:07:18,134 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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2022-07-23 00:07:18,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 00:07:18,317 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 00:07:18,401 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2022-07-23 00:07:18,401 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2022-07-23 00:07:18,419 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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2022-07-23 00:07:18,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 00:07:18,683 INFO L208 MainTranslator]: Completed translation [2022-07-23 00:07:18,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:18 WrapperNode [2022-07-23 00:07:18,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 00:07:18,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 00:07:18,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 00:07:18,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 00:07:18,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:18" (1/1) ... [2022-07-23 00:07:18,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:18" (1/1) ... [2022-07-23 00:07:18,893 INFO L137 Inliner]: procedures = 290, calls = 1587, calls flagged for inlining = 160, calls inlined = 157, statements flattened = 4216 [2022-07-23 00:07:18,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 00:07:18,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 00:07:18,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 00:07:18,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 00:07:18,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:18" (1/1) ... [2022-07-23 00:07:18,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:18" (1/1) ... [2022-07-23 00:07:18,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:18" (1/1) ... [2022-07-23 00:07:18,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:18" (1/1) ... [2022-07-23 00:07:19,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:18" (1/1) ... [2022-07-23 00:07:19,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:18" (1/1) ... [2022-07-23 00:07:19,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:18" (1/1) ... [2022-07-23 00:07:19,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 00:07:19,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 00:07:19,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 00:07:19,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 00:07:19,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:18" (1/1) ... [2022-07-23 00:07:19,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 00:07:19,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:07:19,112 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) [2022-07-23 00:07:19,118 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 [2022-07-23 00:07:19,143 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rxfilter [2022-07-23 00:07:19,143 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rxfilter [2022-07-23 00:07:19,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-23 00:07:19,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-23 00:07:19,144 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-07-23 00:07:19,144 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-07-23 00:07:19,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 00:07:19,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-23 00:07:19,144 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-07-23 00:07:19,144 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-07-23 00:07:19,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-23 00:07:19,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-23 00:07:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-07-23 00:07:19,145 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-07-23 00:07:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-23 00:07:19,145 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-23 00:07:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-07-23 00:07:19,145 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-07-23 00:07:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-23 00:07:19,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-23 00:07:19,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-23 00:07:19,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-23 00:07:19,146 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_reset [2022-07-23 00:07:19,146 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_reset [2022-07-23 00:07:19,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-23 00:07:19,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-23 00:07:19,146 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-07-23 00:07:19,147 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-07-23 00:07:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-07-23 00:07:19,147 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-07-23 00:07:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-07-23 00:07:19,147 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-07-23 00:07:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-07-23 00:07:19,147 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-07-23 00:07:19,148 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_default_phy [2022-07-23 00:07:19,148 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_default_phy [2022-07-23 00:07:19,148 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-07-23 00:07:19,148 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-07-23 00:07:19,148 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-23 00:07:19,148 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-23 00:07:19,148 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-07-23 00:07:19,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-07-23 00:07:19,149 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-23 00:07:19,149 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-23 00:07:19,150 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-07-23 00:07:19,150 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-07-23 00:07:19,150 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-07-23 00:07:19,150 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-07-23 00:07:19,150 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_check_mode [2022-07-23 00:07:19,150 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_check_mode [2022-07-23 00:07:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-23 00:07:19,151 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-23 00:07:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2022-07-23 00:07:19,151 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2022-07-23 00:07:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-23 00:07:19,151 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-23 00:07:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 00:07:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-23 00:07:19,151 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-23 00:07:19,152 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-07-23 00:07:19,152 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-07-23 00:07:19,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 00:07:19,152 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-07-23 00:07:19,152 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-07-23 00:07:19,153 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-07-23 00:07:19,153 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-07-23 00:07:19,153 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-23 00:07:19,153 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-23 00:07:19,153 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-07-23 00:07:19,153 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-07-23 00:07:19,153 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-23 00:07:19,153 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-23 00:07:19,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-23 00:07:19,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-23 00:07:19,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-07-23 00:07:19,154 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rx_ring [2022-07-23 00:07:19,154 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rx_ring [2022-07-23 00:07:19,154 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_remove [2022-07-23 00:07:19,154 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_remove [2022-07-23 00:07:19,155 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-23 00:07:19,155 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-23 00:07:19,155 INFO L130 BoogieDeclarations]: Found specification of procedure sis630_set_eq [2022-07-23 00:07:19,155 INFO L138 BoogieDeclarations]: Found implementation of procedure sis630_set_eq [2022-07-23 00:07:19,155 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_device [2022-07-23 00:07:19,156 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_device [2022-07-23 00:07:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-07-23 00:07:19,156 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-07-23 00:07:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-23 00:07:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-23 00:07:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-23 00:07:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 00:07:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 00:07:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-23 00:07:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-23 00:07:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-23 00:07:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-23 00:07:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-07-23 00:07:19,158 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-07-23 00:07:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-23 00:07:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-07-23 00:07:19,158 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-07-23 00:07:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-23 00:07:19,158 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-23 00:07:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_tx_ring [2022-07-23 00:07:19,159 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_tx_ring [2022-07-23 00:07:19,159 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-23 00:07:19,161 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-23 00:07:19,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-23 00:07:19,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-23 00:07:19,161 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hw_addr_random [2022-07-23 00:07:19,162 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hw_addr_random [2022-07-23 00:07:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-07-23 00:07:19,163 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-07-23 00:07:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-23 00:07:19,163 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-23 00:07:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-07-23 00:07:19,211 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-07-23 00:07:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_set_mode [2022-07-23 00:07:19,211 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_set_mode [2022-07-23 00:07:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_poll [2022-07-23 00:07:19,211 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_poll [2022-07-23 00:07:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-07-23 00:07:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-07-23 00:07:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-23 00:07:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-23 00:07:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-23 00:07:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-23 00:07:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-07-23 00:07:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-07-23 00:07:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-23 00:07:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-23 00:07:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-23 00:07:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-23 00:07:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-23 00:07:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-23 00:07:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-07-23 00:07:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-07-23 00:07:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-07-23 00:07:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-07-23 00:07:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-23 00:07:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-23 00:07:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_interrupt [2022-07-23 00:07:19,213 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_interrupt [2022-07-23 00:07:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-23 00:07:19,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-23 00:07:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_reset_phy [2022-07-23 00:07:19,213 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_reset_phy [2022-07-23 00:07:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_set_config [2022-07-23 00:07:19,213 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_set_config [2022-07-23 00:07:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 00:07:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2022-07-23 00:07:19,213 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2022-07-23 00:07:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 00:07:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_idle [2022-07-23 00:07:19,213 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_idle [2022-07-23 00:07:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 00:07:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-07-23 00:07:19,213 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-07-23 00:07:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-23 00:07:19,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-23 00:07:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-07-23 00:07:19,214 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-07-23 00:07:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-23 00:07:19,214 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-23 00:07:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_tx_timeout [2022-07-23 00:07:19,214 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_tx_timeout [2022-07-23 00:07:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-07-23 00:07:19,214 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-07-23 00:07:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ioctl [2022-07-23 00:07:19,214 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ioctl [2022-07-23 00:07:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-07-23 00:07:19,214 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-07-23 00:07:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-23 00:07:19,214 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-23 00:07:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-07-23 00:07:19,214 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-07-23 00:07:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 00:07:19,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 00:07:19,749 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 00:07:19,751 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 00:07:19,880 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-23 00:07:48,161 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 00:07:48,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 00:07:48,191 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 00:07:48,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 12:07:48 BoogieIcfgContainer [2022-07-23 00:07:48,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 00:07:48,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 00:07:48,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 00:07:48,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 00:07:48,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 12:07:16" (1/3) ... [2022-07-23 00:07:48,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3630f152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 12:07:48, skipping insertion in model container [2022-07-23 00:07:48,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:07:18" (2/3) ... [2022-07-23 00:07:48,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3630f152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 12:07:48, skipping insertion in model container [2022-07-23 00:07:48,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 12:07:48" (3/3) ... [2022-07-23 00:07:48,204 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2022-07-23 00:07:48,214 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 00:07:48,214 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-23 00:07:48,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 00:07:48,286 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@2982aa44, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b120d30 [2022-07-23 00:07:48,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-23 00:07:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 1685 states, 1169 states have (on average 1.3250641573994868) internal successors, (1549), 1196 states have internal predecessors, (1549), 437 states have call successors, (437), 78 states have call predecessors, (437), 77 states have return successors, (430), 426 states have call predecessors, (430), 430 states have call successors, (430) [2022-07-23 00:07:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-23 00:07:48,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:07:48,319 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-07-23 00:07:48,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:07:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:07:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1363995595, now seen corresponding path program 1 times [2022-07-23 00:07:48,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:07:48,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609386278] [2022-07-23 00:07:48,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:07:48,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:07:48,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:07:48,368 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) [2022-07-23 00:07:48,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 00:07:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:07:49,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 00:07:49,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:07:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-23 00:07:49,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:07:49,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:07:49,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609386278] [2022-07-23 00:07:49,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609386278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:07:49,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:07:49,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 00:07:49,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339963618] [2022-07-23 00:07:49,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:07:49,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 00:07:49,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:07:49,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 00:07:49,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:07:49,408 INFO L87 Difference]: Start difference. First operand has 1685 states, 1169 states have (on average 1.3250641573994868) internal successors, (1549), 1196 states have internal predecessors, (1549), 437 states have call successors, (437), 78 states have call predecessors, (437), 77 states have return successors, (430), 426 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:07:49,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:07:49,678 INFO L93 Difference]: Finished difference Result 3366 states and 4873 transitions. [2022-07-23 00:07:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 00:07:49,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2022-07-23 00:07:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:07:49,704 INFO L225 Difference]: With dead ends: 3366 [2022-07-23 00:07:49,704 INFO L226 Difference]: Without dead ends: 1666 [2022-07-23 00:07:49,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:07:49,751 INFO L413 NwaCegarLoop]: 2409 mSDtfsCounter, 0 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4816 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:07:49,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4816 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 00:07:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2022-07-23 00:07:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1666. [2022-07-23 00:07:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1159 states have (on average 1.3140638481449525) internal successors, (1523), 1177 states have internal predecessors, (1523), 430 states have call successors, (430), 77 states have call predecessors, (430), 76 states have return successors, (429), 425 states have call predecessors, (429), 429 states have call successors, (429) [2022-07-23 00:07:49,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2382 transitions. [2022-07-23 00:07:49,910 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2382 transitions. Word has length 92 [2022-07-23 00:07:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:07:49,911 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2382 transitions. [2022-07-23 00:07:49,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:07:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2382 transitions. [2022-07-23 00:07:49,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-23 00:07:49,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:07:49,917 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-07-23 00:07:49,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-23 00:07:50,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:07:50,137 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:07:50,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:07:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash 138693986, now seen corresponding path program 1 times [2022-07-23 00:07:50,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:07:50,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605236332] [2022-07-23 00:07:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:07:50,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:07:50,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:07:50,141 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) [2022-07-23 00:07:50,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 00:07:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:07:51,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 00:07:51,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:07:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-23 00:07:51,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 00:07:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-23 00:07:51,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:07:51,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605236332] [2022-07-23 00:07:51,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605236332] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 00:07:51,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 00:07:51,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-23 00:07:51,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979444087] [2022-07-23 00:07:51,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 00:07:51,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 00:07:51,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:07:51,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 00:07:51,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-23 00:07:51,199 INFO L87 Difference]: Start difference. First operand 1666 states and 2382 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-23 00:07:51,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:07:51,377 INFO L93 Difference]: Finished difference Result 3318 states and 4746 transitions. [2022-07-23 00:07:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 00:07:51,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 93 [2022-07-23 00:07:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:07:51,387 INFO L225 Difference]: With dead ends: 3318 [2022-07-23 00:07:51,387 INFO L226 Difference]: Without dead ends: 1669 [2022-07-23 00:07:51,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:07:51,393 INFO L413 NwaCegarLoop]: 2380 mSDtfsCounter, 0 mSDsluCounter, 9512 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11892 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:07:51,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11892 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 00:07:51,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2022-07-23 00:07:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1669. [2022-07-23 00:07:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1162 states have (on average 1.3132530120481927) internal successors, (1526), 1180 states have internal predecessors, (1526), 430 states have call successors, (430), 77 states have call predecessors, (430), 76 states have return successors, (429), 425 states have call predecessors, (429), 429 states have call successors, (429) [2022-07-23 00:07:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2385 transitions. [2022-07-23 00:07:51,443 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2385 transitions. Word has length 93 [2022-07-23 00:07:51,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:07:51,443 INFO L495 AbstractCegarLoop]: Abstraction has 1669 states and 2385 transitions. [2022-07-23 00:07:51,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-23 00:07:51,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2385 transitions. [2022-07-23 00:07:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-23 00:07:51,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:07:51,447 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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] [2022-07-23 00:07:51,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-23 00:07:51,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:07:51,663 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:07:51,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:07:51,664 INFO L85 PathProgramCache]: Analyzing trace with hash 634287989, now seen corresponding path program 2 times [2022-07-23 00:07:51,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:07:51,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952272516] [2022-07-23 00:07:51,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 00:07:51,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:07:51,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:07:51,668 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) [2022-07-23 00:07:51,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 00:07:52,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 00:07:52,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 00:07:52,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 00:07:52,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:07:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-23 00:07:52,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:07:52,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:07:52,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952272516] [2022-07-23 00:07:52,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952272516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:07:52,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:07:52,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 00:07:52,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382454255] [2022-07-23 00:07:52,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:07:52,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 00:07:52,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:07:52,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 00:07:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 00:07:52,565 INFO L87 Difference]: Start difference. First operand 1669 states and 2385 transitions. Second operand has 5 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-23 00:07:52,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:07:52,641 INFO L93 Difference]: Finished difference Result 1676 states and 2391 transitions. [2022-07-23 00:07:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 00:07:52,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 96 [2022-07-23 00:07:52,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:07:52,649 INFO L225 Difference]: With dead ends: 1676 [2022-07-23 00:07:52,650 INFO L226 Difference]: Without dead ends: 1673 [2022-07-23 00:07:52,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-23 00:07:52,652 INFO L413 NwaCegarLoop]: 2378 mSDtfsCounter, 8 mSDsluCounter, 7122 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9500 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:07:52,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 9500 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 00:07:52,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2022-07-23 00:07:52,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1673. [2022-07-23 00:07:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1165 states have (on average 1.3124463519313305) internal successors, (1529), 1183 states have internal predecessors, (1529), 430 states have call successors, (430), 78 states have call predecessors, (430), 77 states have return successors, (429), 425 states have call predecessors, (429), 429 states have call successors, (429) [2022-07-23 00:07:52,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2388 transitions. [2022-07-23 00:07:52,694 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2388 transitions. Word has length 96 [2022-07-23 00:07:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:07:52,695 INFO L495 AbstractCegarLoop]: Abstraction has 1673 states and 2388 transitions. [2022-07-23 00:07:52,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-23 00:07:52,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2388 transitions. [2022-07-23 00:07:52,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-23 00:07:52,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:07:52,703 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:07:52,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-23 00:07:52,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:07:52,918 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:07:52,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:07:52,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1401028673, now seen corresponding path program 1 times [2022-07-23 00:07:52,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:07:52,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780272967] [2022-07-23 00:07:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:07:52,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:07:52,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:07:52,936 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) [2022-07-23 00:07:52,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 00:07:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:07:54,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1789 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 00:07:54,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:07:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-23 00:07:54,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:07:54,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:07:54,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780272967] [2022-07-23 00:07:54,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780272967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:07:54,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:07:54,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 00:07:54,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454633824] [2022-07-23 00:07:54,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:07:54,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 00:07:54,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:07:54,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 00:07:54,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:07:54,305 INFO L87 Difference]: Start difference. First operand 1673 states and 2388 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-23 00:07:54,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:07:54,534 INFO L93 Difference]: Finished difference Result 4525 states and 6463 transitions. [2022-07-23 00:07:54,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 00:07:54,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 204 [2022-07-23 00:07:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:07:54,552 INFO L225 Difference]: With dead ends: 4525 [2022-07-23 00:07:54,552 INFO L226 Difference]: Without dead ends: 2873 [2022-07-23 00:07:54,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:07:54,562 INFO L413 NwaCegarLoop]: 2810 mSDtfsCounter, 1730 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 5149 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 00:07:54,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 5149 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 00:07:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-07-23 00:07:54,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-07-23 00:07:54,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2002 states have (on average 1.3181818181818181) internal successors, (2639), 2030 states have internal predecessors, (2639), 732 states have call successors, (732), 139 states have call predecessors, (732), 138 states have return successors, (731), 724 states have call predecessors, (731), 731 states have call successors, (731) [2022-07-23 00:07:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4102 transitions. [2022-07-23 00:07:54,654 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4102 transitions. Word has length 204 [2022-07-23 00:07:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:07:54,655 INFO L495 AbstractCegarLoop]: Abstraction has 2873 states and 4102 transitions. [2022-07-23 00:07:54,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-23 00:07:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4102 transitions. [2022-07-23 00:07:54,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-23 00:07:54,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:07:54,674 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:07:54,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 00:07:54,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:07:54,888 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:07:54,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:07:54,888 INFO L85 PathProgramCache]: Analyzing trace with hash 347093790, now seen corresponding path program 1 times [2022-07-23 00:07:54,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:07:54,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442762718] [2022-07-23 00:07:54,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:07:54,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:07:54,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:07:54,891 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) [2022-07-23 00:07:54,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 00:07:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:07:56,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 00:07:56,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:07:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-07-23 00:07:56,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:07:56,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:07:56,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442762718] [2022-07-23 00:07:56,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442762718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:07:56,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:07:56,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 00:07:56,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017746685] [2022-07-23 00:07:56,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:07:56,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 00:07:56,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:07:56,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 00:07:56,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 00:07:56,549 INFO L87 Difference]: Start difference. First operand 2873 states and 4102 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-23 00:07:59,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:07:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:07:59,577 INFO L93 Difference]: Finished difference Result 7555 states and 11105 transitions. [2022-07-23 00:07:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 00:07:59,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 242 [2022-07-23 00:07:59,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:07:59,610 INFO L225 Difference]: With dead ends: 7555 [2022-07-23 00:07:59,610 INFO L226 Difference]: Without dead ends: 4710 [2022-07-23 00:07:59,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:07:59,629 INFO L413 NwaCegarLoop]: 3313 mSDtfsCounter, 1483 mSDsluCounter, 12276 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 15589 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-23 00:07:59,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 15589 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-23 00:07:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2022-07-23 00:07:59,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 2878. [2022-07-23 00:07:59,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2878 states, 2006 states have (on average 1.3175473579262214) internal successors, (2643), 2034 states have internal predecessors, (2643), 732 states have call successors, (732), 139 states have call predecessors, (732), 139 states have return successors, (737), 725 states have call predecessors, (737), 731 states have call successors, (737) [2022-07-23 00:07:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 4112 transitions. [2022-07-23 00:07:59,770 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 4112 transitions. Word has length 242 [2022-07-23 00:07:59,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:07:59,771 INFO L495 AbstractCegarLoop]: Abstraction has 2878 states and 4112 transitions. [2022-07-23 00:07:59,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-23 00:07:59,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 4112 transitions. [2022-07-23 00:07:59,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-23 00:07:59,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:07:59,786 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:07:59,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-23 00:07:59,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:07:59,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:07:59,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:07:59,992 INFO L85 PathProgramCache]: Analyzing trace with hash -947631555, now seen corresponding path program 1 times [2022-07-23 00:07:59,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:07:59,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93575206] [2022-07-23 00:07:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:07:59,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:07:59,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:07:59,996 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) [2022-07-23 00:07:59,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 00:08:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:08:01,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 00:08:01,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:08:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-07-23 00:08:01,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:08:01,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:08:01,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93575206] [2022-07-23 00:08:01,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93575206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:08:01,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:08:01,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 00:08:01,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161713268] [2022-07-23 00:08:01,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:08:01,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 00:08:01,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:08:01,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 00:08:01,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 00:08:01,649 INFO L87 Difference]: Start difference. First operand 2878 states and 4112 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-23 00:08:02,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:08:02,291 INFO L93 Difference]: Finished difference Result 7581 states and 11143 transitions. [2022-07-23 00:08:02,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 00:08:02,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 248 [2022-07-23 00:08:02,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:08:02,311 INFO L225 Difference]: With dead ends: 7581 [2022-07-23 00:08:02,311 INFO L226 Difference]: Without dead ends: 4731 [2022-07-23 00:08:02,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:08:02,320 INFO L413 NwaCegarLoop]: 3316 mSDtfsCounter, 1501 mSDsluCounter, 12301 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 15617 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 00:08:02,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 15617 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 00:08:02,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2022-07-23 00:08:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 2881. [2022-07-23 00:08:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2009 states have (on average 1.3170731707317074) internal successors, (2646), 2036 states have internal predecessors, (2646), 732 states have call successors, (732), 139 states have call predecessors, (732), 139 states have return successors, (737), 726 states have call predecessors, (737), 731 states have call successors, (737) [2022-07-23 00:08:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 4115 transitions. [2022-07-23 00:08:02,423 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 4115 transitions. Word has length 248 [2022-07-23 00:08:02,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:08:02,423 INFO L495 AbstractCegarLoop]: Abstraction has 2881 states and 4115 transitions. [2022-07-23 00:08:02,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-23 00:08:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 4115 transitions. [2022-07-23 00:08:02,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-23 00:08:02,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:08:02,438 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:08:02,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-23 00:08:02,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:08:02,664 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:08:02,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:08:02,664 INFO L85 PathProgramCache]: Analyzing trace with hash 2018694300, now seen corresponding path program 1 times [2022-07-23 00:08:02,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:08:02,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693988986] [2022-07-23 00:08:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:08:02,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:08:02,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:08:02,667 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) [2022-07-23 00:08:02,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 00:08:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:08:04,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-23 00:08:04,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:08:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 129 proven. 6 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-23 00:08:04,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 00:08:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-23 00:08:05,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:08:05,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693988986] [2022-07-23 00:08:05,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693988986] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 00:08:05,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 00:08:05,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-23 00:08:05,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614292937] [2022-07-23 00:08:05,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 00:08:05,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 00:08:05,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:08:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 00:08:05,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-23 00:08:05,391 INFO L87 Difference]: Start difference. First operand 2881 states and 4115 transitions. Second operand has 13 states, 13 states have (on average 16.692307692307693) internal successors, (217), 11 states have internal predecessors, (217), 7 states have call successors, (45), 3 states have call predecessors, (45), 6 states have return successors, (44), 9 states have call predecessors, (44), 7 states have call successors, (44) [2022-07-23 00:08:11,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:08:13,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:08:15,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:08:17,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:08:19,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:08:21,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:08:24,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:08:24,062 INFO L93 Difference]: Finished difference Result 10463 states and 15278 transitions. [2022-07-23 00:08:24,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 00:08:24,063 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 16.692307692307693) internal successors, (217), 11 states have internal predecessors, (217), 7 states have call successors, (45), 3 states have call predecessors, (45), 6 states have return successors, (44), 9 states have call predecessors, (44), 7 states have call successors, (44) Word has length 254 [2022-07-23 00:08:24,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:08:24,117 INFO L225 Difference]: With dead ends: 10463 [2022-07-23 00:08:24,117 INFO L226 Difference]: Without dead ends: 7586 [2022-07-23 00:08:24,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-23 00:08:24,136 INFO L413 NwaCegarLoop]: 4115 mSDtfsCounter, 5334 mSDsluCounter, 34186 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 1317 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5492 SdHoareTripleChecker+Valid, 38301 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1317 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-07-23 00:08:24,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5492 Valid, 38301 Invalid, 3122 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1317 Valid, 1804 Invalid, 1 Unknown, 0 Unchecked, 17.8s Time] [2022-07-23 00:08:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2022-07-23 00:08:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 5735. [2022-07-23 00:08:24,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5735 states, 3999 states have (on average 1.317829457364341) internal successors, (5270), 4055 states have internal predecessors, (5270), 1456 states have call successors, (1456), 276 states have call predecessors, (1456), 279 states have return successors, (1477), 1445 states have call predecessors, (1477), 1455 states have call successors, (1477) [2022-07-23 00:08:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5735 states to 5735 states and 8203 transitions. [2022-07-23 00:08:24,487 INFO L78 Accepts]: Start accepts. Automaton has 5735 states and 8203 transitions. Word has length 254 [2022-07-23 00:08:24,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:08:24,487 INFO L495 AbstractCegarLoop]: Abstraction has 5735 states and 8203 transitions. [2022-07-23 00:08:24,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.692307692307693) internal successors, (217), 11 states have internal predecessors, (217), 7 states have call successors, (45), 3 states have call predecessors, (45), 6 states have return successors, (44), 9 states have call predecessors, (44), 7 states have call successors, (44) [2022-07-23 00:08:24,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5735 states and 8203 transitions. [2022-07-23 00:08:24,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-23 00:08:24,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:08:24,511 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:08:24,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-23 00:08:24,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:08:24,732 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:08:24,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:08:24,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1748099620, now seen corresponding path program 1 times [2022-07-23 00:08:24,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:08:24,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246184112] [2022-07-23 00:08:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:08:24,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:08:24,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:08:24,735 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) [2022-07-23 00:08:24,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-23 00:08:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:08:26,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 00:08:26,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:08:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-23 00:08:26,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:08:26,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:08:26,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246184112] [2022-07-23 00:08:26,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246184112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:08:26,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:08:26,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 00:08:26,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788054268] [2022-07-23 00:08:26,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:08:26,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 00:08:26,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:08:26,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 00:08:26,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 00:08:26,664 INFO L87 Difference]: Start difference. First operand 5735 states and 8203 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-23 00:08:28,966 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 [] [2022-07-23 00:08:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:08:29,186 INFO L93 Difference]: Finished difference Result 13286 states and 19322 transitions. [2022-07-23 00:08:29,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 00:08:29,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 254 [2022-07-23 00:08:29,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:08:29,248 INFO L225 Difference]: With dead ends: 13286 [2022-07-23 00:08:29,248 INFO L226 Difference]: Without dead ends: 7579 [2022-07-23 00:08:29,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:08:29,277 INFO L413 NwaCegarLoop]: 3128 mSDtfsCounter, 501 mSDsluCounter, 11888 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 15016 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-23 00:08:29,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 15016 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-23 00:08:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7579 states. [2022-07-23 00:08:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7579 to 5745. [2022-07-23 00:08:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5745 states, 4007 states have (on average 1.3171949089094086) internal successors, (5278), 4063 states have internal predecessors, (5278), 1456 states have call successors, (1456), 276 states have call predecessors, (1456), 281 states have return successors, (1481), 1447 states have call predecessors, (1481), 1455 states have call successors, (1481) [2022-07-23 00:08:29,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5745 states to 5745 states and 8215 transitions. [2022-07-23 00:08:29,520 INFO L78 Accepts]: Start accepts. Automaton has 5745 states and 8215 transitions. Word has length 254 [2022-07-23 00:08:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:08:29,520 INFO L495 AbstractCegarLoop]: Abstraction has 5745 states and 8215 transitions. [2022-07-23 00:08:29,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-23 00:08:29,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5745 states and 8215 transitions. [2022-07-23 00:08:29,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-23 00:08:29,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:08:29,548 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:08:29,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-23 00:08:29,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:08:29,764 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:08:29,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:08:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash 237284546, now seen corresponding path program 1 times [2022-07-23 00:08:29,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:08:29,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665587767] [2022-07-23 00:08:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:08:29,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:08:29,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:08:29,768 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) [2022-07-23 00:08:29,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-23 00:08:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:08:31,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 00:08:31,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:08:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-23 00:08:31,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:08:31,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:08:31,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665587767] [2022-07-23 00:08:31,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665587767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:08:31,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:08:31,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 00:08:31,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045168168] [2022-07-23 00:08:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:08:31,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 00:08:31,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:08:31,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 00:08:31,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:08:31,928 INFO L87 Difference]: Start difference. First operand 5745 states and 8215 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-23 00:08:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:08:32,101 INFO L93 Difference]: Finished difference Result 11464 states and 16402 transitions. [2022-07-23 00:08:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 00:08:32,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 264 [2022-07-23 00:08:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:08:32,120 INFO L225 Difference]: With dead ends: 11464 [2022-07-23 00:08:32,120 INFO L226 Difference]: Without dead ends: 5747 [2022-07-23 00:08:32,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:08:32,138 INFO L413 NwaCegarLoop]: 2380 mSDtfsCounter, 0 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4756 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:08:32,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4756 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-07-23 00:08:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5747 states. [2022-07-23 00:08:32,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5747 to 5747. [2022-07-23 00:08:32,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5747 states, 4009 states have (on average 1.3170366674981293) internal successors, (5280), 4065 states have internal predecessors, (5280), 1456 states have call successors, (1456), 276 states have call predecessors, (1456), 281 states have return successors, (1481), 1447 states have call predecessors, (1481), 1455 states have call successors, (1481) [2022-07-23 00:08:32,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5747 states to 5747 states and 8217 transitions. [2022-07-23 00:08:32,330 INFO L78 Accepts]: Start accepts. Automaton has 5747 states and 8217 transitions. Word has length 264 [2022-07-23 00:08:32,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:08:32,330 INFO L495 AbstractCegarLoop]: Abstraction has 5747 states and 8217 transitions. [2022-07-23 00:08:32,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-23 00:08:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 5747 states and 8217 transitions. [2022-07-23 00:08:32,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-23 00:08:32,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:08:32,347 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:08:32,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-07-23 00:08:32,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:08:32,564 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:08:32,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:08:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1381690368, now seen corresponding path program 1 times [2022-07-23 00:08:32,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:08:32,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144975289] [2022-07-23 00:08:32,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:08:32,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:08:32,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:08:32,569 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) [2022-07-23 00:08:32,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-23 00:08:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:08:34,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 1994 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 00:08:34,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:08:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-23 00:08:34,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:08:34,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:08:34,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144975289] [2022-07-23 00:08:34,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144975289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:08:34,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:08:34,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 00:08:34,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368066650] [2022-07-23 00:08:34,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:08:34,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 00:08:34,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:08:34,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 00:08:34,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 00:08:34,977 INFO L87 Difference]: Start difference. First operand 5747 states and 8217 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-23 00:08:37,200 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 [] [2022-07-23 00:08:37,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:08:37,422 INFO L93 Difference]: Finished difference Result 13310 states and 19350 transitions. [2022-07-23 00:08:37,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 00:08:37,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 264 [2022-07-23 00:08:37,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:08:37,450 INFO L225 Difference]: With dead ends: 13310 [2022-07-23 00:08:37,451 INFO L226 Difference]: Without dead ends: 7591 [2022-07-23 00:08:37,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:08:37,467 INFO L413 NwaCegarLoop]: 3176 mSDtfsCounter, 503 mSDsluCounter, 12042 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 15218 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-23 00:08:37,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 15218 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-23 00:08:37,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7591 states. [2022-07-23 00:08:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7591 to 5751. [2022-07-23 00:08:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5751 states, 4013 states have (on average 1.3167206578619486) internal successors, (5284), 4067 states have internal predecessors, (5284), 1456 states have call successors, (1456), 276 states have call predecessors, (1456), 281 states have return successors, (1481), 1449 states have call predecessors, (1481), 1455 states have call successors, (1481) [2022-07-23 00:08:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5751 states to 5751 states and 8221 transitions. [2022-07-23 00:08:37,688 INFO L78 Accepts]: Start accepts. Automaton has 5751 states and 8221 transitions. Word has length 264 [2022-07-23 00:08:37,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:08:37,688 INFO L495 AbstractCegarLoop]: Abstraction has 5751 states and 8221 transitions. [2022-07-23 00:08:37,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-23 00:08:37,689 INFO L276 IsEmpty]: Start isEmpty. Operand 5751 states and 8221 transitions. [2022-07-23 00:08:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-23 00:08:37,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:08:37,706 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:08:37,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-23 00:08:37,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:08:37,920 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:08:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:08:37,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1482716132, now seen corresponding path program 1 times [2022-07-23 00:08:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:08:37,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828911273] [2022-07-23 00:08:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:08:37,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:08:37,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:08:37,923 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) [2022-07-23 00:08:37,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-23 00:08:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:08:40,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 2054 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 00:08:40,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:08:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-07-23 00:08:40,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:08:40,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:08:40,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828911273] [2022-07-23 00:08:40,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828911273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:08:40,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:08:40,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 00:08:40,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70644362] [2022-07-23 00:08:40,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:08:40,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 00:08:40,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:08:40,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 00:08:40,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:08:40,878 INFO L87 Difference]: Start difference. First operand 5751 states and 8221 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-23 00:08:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:08:41,088 INFO L93 Difference]: Finished difference Result 11474 states and 16406 transitions. [2022-07-23 00:08:41,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 00:08:41,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 274 [2022-07-23 00:08:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:08:41,117 INFO L225 Difference]: With dead ends: 11474 [2022-07-23 00:08:41,117 INFO L226 Difference]: Without dead ends: 5751 [2022-07-23 00:08:41,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:08:41,134 INFO L413 NwaCegarLoop]: 2379 mSDtfsCounter, 2238 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:08:41,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2238 Valid, 2379 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 00:08:41,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5751 states. [2022-07-23 00:08:41,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5751 to 5751. [2022-07-23 00:08:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5751 states, 4013 states have (on average 1.3162222775978072) internal successors, (5282), 4067 states have internal predecessors, (5282), 1456 states have call successors, (1456), 276 states have call predecessors, (1456), 281 states have return successors, (1481), 1449 states have call predecessors, (1481), 1455 states have call successors, (1481) [2022-07-23 00:08:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5751 states to 5751 states and 8219 transitions. [2022-07-23 00:08:41,343 INFO L78 Accepts]: Start accepts. Automaton has 5751 states and 8219 transitions. Word has length 274 [2022-07-23 00:08:41,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:08:41,344 INFO L495 AbstractCegarLoop]: Abstraction has 5751 states and 8219 transitions. [2022-07-23 00:08:41,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-23 00:08:41,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5751 states and 8219 transitions. [2022-07-23 00:08:41,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-23 00:08:41,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:08:41,361 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:08:41,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-23 00:08:41,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:08:41,588 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:08:41,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:08:41,588 INFO L85 PathProgramCache]: Analyzing trace with hash -221798882, now seen corresponding path program 1 times [2022-07-23 00:08:41,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:08:41,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779974022] [2022-07-23 00:08:41,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:08:41,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:08:41,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:08:41,592 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 00:08:41,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-23 00:08:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:08:44,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 2054 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 00:08:44,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:08:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2022-07-23 00:08:44,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:08:44,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:08:44,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779974022] [2022-07-23 00:08:44,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779974022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:08:44,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:08:44,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 00:08:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410203243] [2022-07-23 00:08:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:08:44,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 00:08:44,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:08:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 00:08:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:08:44,375 INFO L87 Difference]: Start difference. First operand 5751 states and 8219 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-23 00:08:44,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:08:44,613 INFO L93 Difference]: Finished difference Result 13754 states and 20016 transitions. [2022-07-23 00:08:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 00:08:44,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 274 [2022-07-23 00:08:44,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:08:44,646 INFO L225 Difference]: With dead ends: 13754 [2022-07-23 00:08:44,646 INFO L226 Difference]: Without dead ends: 8031 [2022-07-23 00:08:44,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:08:44,666 INFO L413 NwaCegarLoop]: 3474 mSDtfsCounter, 710 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 6047 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:08:44,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 6047 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 00:08:44,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8031 states. [2022-07-23 00:08:44,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8031 to 5753. [2022-07-23 00:08:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 4015 states have (on average 1.3160647571606476) internal successors, (5284), 4069 states have internal predecessors, (5284), 1456 states have call successors, (1456), 276 states have call predecessors, (1456), 281 states have return successors, (1481), 1449 states have call predecessors, (1481), 1455 states have call successors, (1481) [2022-07-23 00:08:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 8221 transitions. [2022-07-23 00:08:45,021 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 8221 transitions. Word has length 274 [2022-07-23 00:08:45,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:08:45,022 INFO L495 AbstractCegarLoop]: Abstraction has 5753 states and 8221 transitions. [2022-07-23 00:08:45,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-23 00:08:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 8221 transitions. [2022-07-23 00:08:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-07-23 00:08:45,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:08:45,040 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:08:45,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-23 00:08:45,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:08:45,268 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:08:45,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:08:45,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1239846434, now seen corresponding path program 1 times [2022-07-23 00:08:45,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:08:45,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677990604] [2022-07-23 00:08:45,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:08:45,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:08:45,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:08:45,272 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 00:08:45,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-23 00:08:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:08:48,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 00:08:48,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:08:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-07-23 00:08:48,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:08:48,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:08:48,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677990604] [2022-07-23 00:08:48,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677990604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:08:48,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:08:48,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:08:48,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414969221] [2022-07-23 00:08:48,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:08:48,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:08:48,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:08:48,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:08:48,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:08:48,212 INFO L87 Difference]: Start difference. First operand 5753 states and 8221 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-23 00:08:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:08:48,540 INFO L93 Difference]: Finished difference Result 11496 states and 16436 transitions. [2022-07-23 00:08:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 00:08:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 275 [2022-07-23 00:08:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:08:48,588 INFO L225 Difference]: With dead ends: 11496 [2022-07-23 00:08:48,588 INFO L226 Difference]: Without dead ends: 5771 [2022-07-23 00:08:48,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-23 00:08:48,607 INFO L413 NwaCegarLoop]: 2380 mSDtfsCounter, 1 mSDsluCounter, 11866 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14246 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 00:08:48,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14246 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 00:08:48,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2022-07-23 00:08:48,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5763. [2022-07-23 00:08:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5763 states, 4023 states have (on average 1.3154362416107384) internal successors, (5292), 4075 states have internal predecessors, (5292), 1456 states have call successors, (1456), 276 states have call predecessors, (1456), 283 states have return successors, (1487), 1453 states have call predecessors, (1487), 1455 states have call successors, (1487) [2022-07-23 00:08:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5763 states to 5763 states and 8235 transitions. [2022-07-23 00:08:48,921 INFO L78 Accepts]: Start accepts. Automaton has 5763 states and 8235 transitions. Word has length 275 [2022-07-23 00:08:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:08:48,921 INFO L495 AbstractCegarLoop]: Abstraction has 5763 states and 8235 transitions. [2022-07-23 00:08:48,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-23 00:08:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5763 states and 8235 transitions. [2022-07-23 00:08:48,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-07-23 00:08:48,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:08:48,942 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:08:48,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-23 00:08:49,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:08:49,168 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:08:49,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:08:49,168 INFO L85 PathProgramCache]: Analyzing trace with hash -797472289, now seen corresponding path program 1 times [2022-07-23 00:08:49,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:08:49,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183946926] [2022-07-23 00:08:49,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:08:49,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:08:49,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:08:49,172 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 00:08:49,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-23 00:08:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:08:52,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 2093 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-23 00:08:52,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:08:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 115 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-23 00:08:52,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 00:08:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-23 00:08:53,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:08:53,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183946926] [2022-07-23 00:08:53,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183946926] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 00:08:53,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 00:08:53,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-07-23 00:08:53,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925827996] [2022-07-23 00:08:53,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:08:53,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 00:08:53,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:08:53,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 00:08:53,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-23 00:08:53,576 INFO L87 Difference]: Start difference. First operand 5763 states and 8235 transitions. Second operand has 8 states, 8 states have (on average 17.25) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 5 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-23 00:08:54,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:08:54,422 INFO L93 Difference]: Finished difference Result 13754 states and 20016 transitions. [2022-07-23 00:08:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 00:08:54,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 5 states have call predecessors, (26), 3 states have call successors, (26) Word has length 281 [2022-07-23 00:08:54,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:08:54,465 INFO L225 Difference]: With dead ends: 13754 [2022-07-23 00:08:54,465 INFO L226 Difference]: Without dead ends: 8019 [2022-07-23 00:08:54,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-23 00:08:54,490 INFO L413 NwaCegarLoop]: 3438 mSDtfsCounter, 709 mSDsluCounter, 19696 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 23134 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 00:08:54,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 23134 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 00:08:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8019 states. [2022-07-23 00:08:54,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8019 to 5765. [2022-07-23 00:08:54,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5765 states, 4025 states have (on average 1.3147826086956522) internal successors, (5292), 4077 states have internal predecessors, (5292), 1456 states have call successors, (1456), 276 states have call predecessors, (1456), 283 states have return successors, (1487), 1453 states have call predecessors, (1487), 1455 states have call successors, (1487) [2022-07-23 00:08:54,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5765 states to 5765 states and 8235 transitions. [2022-07-23 00:08:54,889 INFO L78 Accepts]: Start accepts. Automaton has 5765 states and 8235 transitions. Word has length 281 [2022-07-23 00:08:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:08:54,890 INFO L495 AbstractCegarLoop]: Abstraction has 5765 states and 8235 transitions. [2022-07-23 00:08:54,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 5 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-23 00:08:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 5765 states and 8235 transitions. [2022-07-23 00:08:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-07-23 00:08:54,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:08:54,910 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:08:54,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-23 00:08:55,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:08:55,128 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:08:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:08:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2112071882, now seen corresponding path program 1 times [2022-07-23 00:08:55,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:08:55,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16549310] [2022-07-23 00:08:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:08:55,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:08:55,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:08:55,133 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 00:08:55,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-23 00:08:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:08:58,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 2070 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 00:08:58,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:08:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2022-07-23 00:08:58,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:08:58,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:08:58,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16549310] [2022-07-23 00:08:58,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16549310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:08:58,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:08:58,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 00:08:58,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411582801] [2022-07-23 00:08:58,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:08:58,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 00:08:58,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:08:58,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 00:08:58,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:08:58,087 INFO L87 Difference]: Start difference. First operand 5765 states and 8235 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-23 00:08:58,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:08:58,328 INFO L93 Difference]: Finished difference Result 11508 states and 16444 transitions. [2022-07-23 00:08:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 00:08:58,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 281 [2022-07-23 00:08:58,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:08:58,354 INFO L225 Difference]: With dead ends: 11508 [2022-07-23 00:08:58,354 INFO L226 Difference]: Without dead ends: 5771 [2022-07-23 00:08:58,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:08:58,377 INFO L413 NwaCegarLoop]: 2379 mSDtfsCounter, 1 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:08:58,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4753 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 00:08:58,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2022-07-23 00:08:58,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5767. [2022-07-23 00:08:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 4027 states have (on average 1.3146262726595481) internal successors, (5294), 4079 states have internal predecessors, (5294), 1456 states have call successors, (1456), 276 states have call predecessors, (1456), 283 states have return successors, (1487), 1453 states have call predecessors, (1487), 1455 states have call successors, (1487) [2022-07-23 00:08:58,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 8237 transitions. [2022-07-23 00:08:58,728 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 8237 transitions. Word has length 281 [2022-07-23 00:08:58,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:08:58,728 INFO L495 AbstractCegarLoop]: Abstraction has 5767 states and 8237 transitions. [2022-07-23 00:08:58,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-23 00:08:58,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 8237 transitions. [2022-07-23 00:08:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-23 00:08:58,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:08:58,748 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:08:58,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-07-23 00:08:58,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:08:58,962 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:08:58,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:08:58,962 INFO L85 PathProgramCache]: Analyzing trace with hash -691017872, now seen corresponding path program 1 times [2022-07-23 00:08:58,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:08:58,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800430357] [2022-07-23 00:08:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:08:58,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:08:58,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:08:58,966 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 00:08:58,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-23 00:09:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:09:02,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 2069 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 00:09:02,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:09:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2022-07-23 00:09:02,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 00:09:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-07-23 00:09:02,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:09:02,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800430357] [2022-07-23 00:09:02,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800430357] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 00:09:02,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 00:09:02,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-23 00:09:02,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654838328] [2022-07-23 00:09:02,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 00:09:02,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 00:09:02,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:09:02,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 00:09:02,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-23 00:09:02,450 INFO L87 Difference]: Start difference. First operand 5767 states and 8237 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-23 00:09:08,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:09:08,225 INFO L93 Difference]: Finished difference Result 20640 states and 30914 transitions. [2022-07-23 00:09:08,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 00:09:08,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 282 [2022-07-23 00:09:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:09:08,329 INFO L225 Difference]: With dead ends: 20640 [2022-07-23 00:09:08,329 INFO L226 Difference]: Without dead ends: 14901 [2022-07-23 00:09:08,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:09:08,362 INFO L413 NwaCegarLoop]: 5006 mSDtfsCounter, 3547 mSDsluCounter, 13211 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4155 SdHoareTripleChecker+Valid, 18217 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-23 00:09:08,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4155 Valid, 18217 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-23 00:09:08,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14901 states. [2022-07-23 00:09:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14901 to 5797. [2022-07-23 00:09:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5797 states, 4051 states have (on average 1.3142433966921747) internal successors, (5324), 4103 states have internal predecessors, (5324), 1462 states have call successors, (1462), 276 states have call predecessors, (1462), 283 states have return successors, (1493), 1459 states have call predecessors, (1493), 1461 states have call successors, (1493) [2022-07-23 00:09:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5797 states to 5797 states and 8279 transitions. [2022-07-23 00:09:09,296 INFO L78 Accepts]: Start accepts. Automaton has 5797 states and 8279 transitions. Word has length 282 [2022-07-23 00:09:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:09:09,299 INFO L495 AbstractCegarLoop]: Abstraction has 5797 states and 8279 transitions. [2022-07-23 00:09:09,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-23 00:09:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5797 states and 8279 transitions. [2022-07-23 00:09:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-07-23 00:09:09,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:09:09,336 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:09:09,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-23 00:09:09,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:09:09,560 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:09:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:09:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1881056989, now seen corresponding path program 1 times [2022-07-23 00:09:09,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:09:09,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107708284] [2022-07-23 00:09:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:09:09,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:09:09,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:09:09,564 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 00:09:09,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-23 00:09:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:09:12,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 00:09:12,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:09:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2022-07-23 00:09:12,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:09:12,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:09:12,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107708284] [2022-07-23 00:09:12,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107708284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:09:12,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:09:12,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 00:09:12,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564787594] [2022-07-23 00:09:12,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:09:12,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 00:09:12,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:09:12,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 00:09:12,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:09:12,815 INFO L87 Difference]: Start difference. First operand 5797 states and 8279 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-07-23 00:09:13,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:09:13,383 INFO L93 Difference]: Finished difference Result 13852 states and 20138 transitions. [2022-07-23 00:09:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 00:09:13,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 286 [2022-07-23 00:09:13,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:09:13,408 INFO L225 Difference]: With dead ends: 13852 [2022-07-23 00:09:13,409 INFO L226 Difference]: Without dead ends: 8083 [2022-07-23 00:09:13,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:09:13,426 INFO L413 NwaCegarLoop]: 3444 mSDtfsCounter, 692 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 6009 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 00:09:13,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 6009 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 00:09:13,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8083 states. [2022-07-23 00:09:13,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8083 to 5799. [2022-07-23 00:09:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5799 states, 4053 states have (on average 1.314088329632371) internal successors, (5326), 4105 states have internal predecessors, (5326), 1462 states have call successors, (1462), 276 states have call predecessors, (1462), 283 states have return successors, (1493), 1459 states have call predecessors, (1493), 1461 states have call successors, (1493) [2022-07-23 00:09:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5799 states to 5799 states and 8281 transitions. [2022-07-23 00:09:13,729 INFO L78 Accepts]: Start accepts. Automaton has 5799 states and 8281 transitions. Word has length 286 [2022-07-23 00:09:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:09:13,729 INFO L495 AbstractCegarLoop]: Abstraction has 5799 states and 8281 transitions. [2022-07-23 00:09:13,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-07-23 00:09:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5799 states and 8281 transitions. [2022-07-23 00:09:13,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-07-23 00:09:13,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:09:13,750 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:09:13,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-23 00:09:13,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:09:13,954 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:09:13,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:09:13,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1147415790, now seen corresponding path program 1 times [2022-07-23 00:09:13,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:09:13,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931870308] [2022-07-23 00:09:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:09:13,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:09:13,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:09:13,973 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 00:09:13,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-23 00:09:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:09:17,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 2210 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 00:09:17,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:09:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-07-23 00:09:17,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:09:17,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:09:17,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931870308] [2022-07-23 00:09:17,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931870308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:09:17,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:09:17,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 00:09:17,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739048312] [2022-07-23 00:09:17,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:09:17,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 00:09:17,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:09:17,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 00:09:17,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:09:17,196 INFO L87 Difference]: Start difference. First operand 5799 states and 8281 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-23 00:09:17,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:09:17,448 INFO L93 Difference]: Finished difference Result 11598 states and 16806 transitions. [2022-07-23 00:09:17,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 00:09:17,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 327 [2022-07-23 00:09:17,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:09:17,469 INFO L225 Difference]: With dead ends: 11598 [2022-07-23 00:09:17,469 INFO L226 Difference]: Without dead ends: 5827 [2022-07-23 00:09:17,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:09:17,488 INFO L413 NwaCegarLoop]: 2382 mSDtfsCounter, 2 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4758 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:09:17,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4758 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 00:09:17,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2022-07-23 00:09:17,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5803. [2022-07-23 00:09:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5803 states, 4057 states have (on average 1.313778654177964) internal successors, (5330), 4109 states have internal predecessors, (5330), 1462 states have call successors, (1462), 276 states have call predecessors, (1462), 283 states have return successors, (1493), 1459 states have call predecessors, (1493), 1461 states have call successors, (1493) [2022-07-23 00:09:17,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 8285 transitions. [2022-07-23 00:09:17,864 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 8285 transitions. Word has length 327 [2022-07-23 00:09:17,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:09:17,864 INFO L495 AbstractCegarLoop]: Abstraction has 5803 states and 8285 transitions. [2022-07-23 00:09:17,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-23 00:09:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 8285 transitions. [2022-07-23 00:09:17,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-07-23 00:09:17,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:09:17,882 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:09:17,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-23 00:09:18,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:09:18,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:09:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:09:18,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1745619561, now seen corresponding path program 1 times [2022-07-23 00:09:18,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:09:18,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751159711] [2022-07-23 00:09:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:09:18,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:09:18,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:09:18,115 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 00:09:18,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-23 00:09:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:09:21,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 2251 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 00:09:21,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:09:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-07-23 00:09:21,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 00:09:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-07-23 00:09:22,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:09:22,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751159711] [2022-07-23 00:09:22,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751159711] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 00:09:22,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 00:09:22,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-23 00:09:22,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423489695] [2022-07-23 00:09:22,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 00:09:22,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 00:09:22,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:09:22,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 00:09:22,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-23 00:09:22,075 INFO L87 Difference]: Start difference. First operand 5803 states and 8285 transitions. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 4 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2022-07-23 00:09:22,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:09:22,566 INFO L93 Difference]: Finished difference Result 11662 states and 16910 transitions. [2022-07-23 00:09:22,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 00:09:22,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 4 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) Word has length 346 [2022-07-23 00:09:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:09:22,597 INFO L225 Difference]: With dead ends: 11662 [2022-07-23 00:09:22,597 INFO L226 Difference]: Without dead ends: 5887 [2022-07-23 00:09:22,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:09:22,624 INFO L413 NwaCegarLoop]: 2395 mSDtfsCounter, 8 mSDsluCounter, 7128 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 9523 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 00:09:22,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 9523 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 00:09:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5887 states. [2022-07-23 00:09:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5887 to 5887. [2022-07-23 00:09:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5887 states, 4093 states have (on average 1.3110188126068898) internal successors, (5366), 4145 states have internal predecessors, (5366), 1510 states have call successors, (1510), 276 states have call predecessors, (1510), 283 states have return successors, (1541), 1507 states have call predecessors, (1541), 1509 states have call successors, (1541) [2022-07-23 00:09:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5887 states to 5887 states and 8417 transitions. [2022-07-23 00:09:23,015 INFO L78 Accepts]: Start accepts. Automaton has 5887 states and 8417 transitions. Word has length 346 [2022-07-23 00:09:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:09:23,016 INFO L495 AbstractCegarLoop]: Abstraction has 5887 states and 8417 transitions. [2022-07-23 00:09:23,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 4 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2022-07-23 00:09:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5887 states and 8417 transitions. [2022-07-23 00:09:23,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-07-23 00:09:23,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:09:23,036 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:09:23,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-07-23 00:09:23,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:09:23,252 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:09:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:09:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1515728814, now seen corresponding path program 2 times [2022-07-23 00:09:23,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 00:09:23,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194122949] [2022-07-23 00:09:23,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 00:09:23,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 00:09:23,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 00:09:23,255 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 00:09:23,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-23 00:09:24,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 00:09:24,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 00:09:24,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 00:09:24,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:09:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-23 00:09:25,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:09:25,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 00:09:25,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194122949] [2022-07-23 00:09:25,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194122949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:09:25,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:09:25,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 00:09:25,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667120434] [2022-07-23 00:09:25,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:09:25,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 00:09:25,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 00:09:25,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 00:09:25,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:09:25,292 INFO L87 Difference]: Start difference. First operand 5887 states and 8417 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2022-07-23 00:09:25,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:09:25,535 INFO L93 Difference]: Finished difference Result 6427 states and 8995 transitions. [2022-07-23 00:09:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 00:09:25,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 403 [2022-07-23 00:09:25,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:09:25,538 INFO L225 Difference]: With dead ends: 6427 [2022-07-23 00:09:25,538 INFO L226 Difference]: Without dead ends: 0 [2022-07-23 00:09:25,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:09:25,553 INFO L413 NwaCegarLoop]: 2485 mSDtfsCounter, 1884 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:09:25,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1884 Valid, 2884 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 00:09:25,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-23 00:09:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-23 00:09:25,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 00:09:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-23 00:09:25,556 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 403 [2022-07-23 00:09:25,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:09:25,556 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 00:09:25,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2022-07-23 00:09:25,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-23 00:09:25,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-23 00:09:25,559 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-23 00:09:25,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-23 00:09:25,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 00:09:25,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.