./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.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 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 01:19:08,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 01:19:08,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 01:19:08,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 01:19:08,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 01:19:08,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 01:19:08,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 01:19:08,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 01:19:08,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 01:19:08,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 01:19:08,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 01:19:08,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 01:19:08,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 01:19:08,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 01:19:08,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 01:19:08,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 01:19:08,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 01:19:08,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 01:19:08,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 01:19:08,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 01:19:08,916 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 01:19:08,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 01:19:08,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 01:19:08,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 01:19:08,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 01:19:08,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 01:19:08,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 01:19:08,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 01:19:08,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 01:19:08,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 01:19:08,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 01:19:08,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 01:19:08,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 01:19:08,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 01:19:08,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 01:19:08,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 01:19:08,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 01:19:08,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 01:19:08,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 01:19:08,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 01:19:08,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 01:19:08,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 01:19:08,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-23 01:19:08,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 01:19:08,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 01:19:08,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 01:19:08,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 01:19:08,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 01:19:08,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 01:19:08,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 01:19:08,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 01:19:08,987 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 01:19:08,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 01:19:08,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 01:19:08,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 01:19:08,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 01:19:08,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 01:19:08,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 01:19:08,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 01:19:08,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 01:19:08,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 01:19:08,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 01:19:08,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 01:19:08,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 01:19:08,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 01:19:08,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 01:19:08,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 01:19:08,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 01:19:08,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 01:19:08,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 01:19:08,992 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 01:19:08,992 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 01:19:08,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 01:19:08,993 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b [2022-07-23 01:19:09,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 01:19:09,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 01:19:09,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 01:19:09,268 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 01:19:09,271 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 01:19:09,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-23 01:19:09,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88ab2e00e/39f5efba2f0549a58e1573b1c5912745/FLAG5014ce406 [2022-07-23 01:19:10,227 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 01:19:10,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-23 01:19:10,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88ab2e00e/39f5efba2f0549a58e1573b1c5912745/FLAG5014ce406 [2022-07-23 01:19:10,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88ab2e00e/39f5efba2f0549a58e1573b1c5912745 [2022-07-23 01:19:10,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 01:19:10,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 01:19:10,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 01:19:10,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 01:19:10,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 01:19:10,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:19:10" (1/1) ... [2022-07-23 01:19:10,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691f18ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:10, skipping insertion in model container [2022-07-23 01:19:10,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:19:10" (1/1) ... [2022-07-23 01:19:10,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 01:19:10,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 01:19:12,567 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2022-07-23 01:19:12,624 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-23 01:19:12,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:19:12,667 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 01:19:12,975 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-23 01:19:12,982 INFO L158 Benchmark]: Toolchain (without parser) took 2634.74ms. Allocated memory was 127.9MB in the beginning and 184.5MB in the end (delta: 56.6MB). Free memory was 79.8MB in the beginning and 100.3MB in the end (delta: -20.5MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. [2022-07-23 01:19:12,983 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 81.8MB. Free memory was 55.0MB in the beginning and 54.9MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 01:19:12,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2630.77ms. Allocated memory was 127.9MB in the beginning and 184.5MB in the end (delta: 56.6MB). Free memory was 79.6MB in the beginning and 100.3MB in the end (delta: -20.7MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. [2022-07-23 01:19:12,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 81.8MB. Free memory was 55.0MB in the beginning and 54.9MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2630.77ms. Allocated memory was 127.9MB in the beginning and 184.5MB in the end (delta: 56.6MB). Free memory was 79.6MB in the beginning and 100.3MB in the end (delta: -20.7MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.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 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 01:19:14,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 01:19:14,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 01:19:14,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 01:19:14,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 01:19:14,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 01:19:14,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 01:19:14,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 01:19:14,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 01:19:14,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 01:19:14,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 01:19:14,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 01:19:14,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 01:19:14,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 01:19:14,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 01:19:14,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 01:19:14,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 01:19:15,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 01:19:15,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 01:19:15,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 01:19:15,009 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 01:19:15,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 01:19:15,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 01:19:15,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 01:19:15,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 01:19:15,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 01:19:15,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 01:19:15,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 01:19:15,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 01:19:15,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 01:19:15,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 01:19:15,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 01:19:15,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 01:19:15,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 01:19:15,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 01:19:15,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 01:19:15,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 01:19:15,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 01:19:15,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 01:19:15,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 01:19:15,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 01:19:15,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 01:19:15,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-23 01:19:15,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 01:19:15,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 01:19:15,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 01:19:15,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 01:19:15,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 01:19:15,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 01:19:15,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 01:19:15,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 01:19:15,072 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 01:19:15,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 01:19:15,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 01:19:15,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 01:19:15,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 01:19:15,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 01:19:15,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 01:19:15,074 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 01:19:15,074 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 01:19:15,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 01:19:15,075 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 01:19:15,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 01:19:15,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 01:19:15,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 01:19:15,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 01:19:15,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 01:19:15,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 01:19:15,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 01:19:15,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 01:19:15,077 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 01:19:15,077 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 01:19:15,077 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 01:19:15,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 01:19:15,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 01:19:15,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 01:19:15,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b [2022-07-23 01:19:15,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 01:19:15,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 01:19:15,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 01:19:15,456 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 01:19:15,456 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 01:19:15,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-23 01:19:15,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a62e10e2/b0be7553fefe40649259e0aac2718ae7/FLAG87780ed2d [2022-07-23 01:19:16,332 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 01:19:16,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-23 01:19:16,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a62e10e2/b0be7553fefe40649259e0aac2718ae7/FLAG87780ed2d [2022-07-23 01:19:16,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a62e10e2/b0be7553fefe40649259e0aac2718ae7 [2022-07-23 01:19:16,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 01:19:16,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 01:19:16,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 01:19:16,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 01:19:16,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 01:19:16,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:19:16" (1/1) ... [2022-07-23 01:19:16,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db3e13a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:16, skipping insertion in model container [2022-07-23 01:19:16,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:19:16" (1/1) ... [2022-07-23 01:19:16,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 01:19:17,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 01:19:19,165 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2022-07-23 01:19:19,230 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-23 01:19:19,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:19:19,281 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 01:19:19,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 01:19:19,766 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2022-07-23 01:19:19,775 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-23 01:19:19,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:19:19,800 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 01:19:20,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2022-07-23 01:19:20,182 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-23 01:19:20,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:19:20,259 INFO L208 MainTranslator]: Completed translation [2022-07-23 01:19:20,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:20 WrapperNode [2022-07-23 01:19:20,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 01:19:20,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 01:19:20,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 01:19:20,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 01:19:20,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:20" (1/1) ... [2022-07-23 01:19:20,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:20" (1/1) ... [2022-07-23 01:19:20,585 INFO L137 Inliner]: procedures = 266, calls = 2297, calls flagged for inlining = 114, calls inlined = 111, statements flattened = 5915 [2022-07-23 01:19:20,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 01:19:20,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 01:19:20,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 01:19:20,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 01:19:20,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:20" (1/1) ... [2022-07-23 01:19:20,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:20" (1/1) ... [2022-07-23 01:19:20,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:20" (1/1) ... [2022-07-23 01:19:20,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:20" (1/1) ... [2022-07-23 01:19:20,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:20" (1/1) ... [2022-07-23 01:19:20,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:20" (1/1) ... [2022-07-23 01:19:20,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:20" (1/1) ... [2022-07-23 01:19:20,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 01:19:20,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 01:19:20,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 01:19:20,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 01:19:20,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:20" (1/1) ... [2022-07-23 01:19:20,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 01:19:20,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 01:19:20,977 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 01:19:21,009 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 01:19:21,031 INFO L130 BoogieDeclarations]: Found specification of procedure atm_charge [2022-07-23 01:19:21,032 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_charge [2022-07-23 01:19:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-23 01:19:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-23 01:19:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-07-23 01:19:21,032 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-07-23 01:19:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure process_tsq [2022-07-23 01:19:21,033 INFO L138 BoogieDeclarations]: Found implementation of procedure process_tsq [2022-07-23 01:19:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 01:19:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-23 01:19:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-07-23 01:19:21,033 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-07-23 01:19:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-23 01:19:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-23 01:19:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-23 01:19:21,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-23 01:19:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-23 01:19:21,034 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-23 01:19:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-23 01:19:21,034 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-23 01:19:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure ns_open [2022-07-23 01:19:21,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_open [2022-07-23 01:19:21,035 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-23 01:19:21,035 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-23 01:19:21,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-23 01:19:21,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-23 01:19:21,035 INFO L130 BoogieDeclarations]: Found specification of procedure ns_read_sram [2022-07-23 01:19:21,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_read_sram [2022-07-23 01:19:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure get_scq [2022-07-23 01:19:21,036 INFO L138 BoogieDeclarations]: Found implementation of procedure get_scq [2022-07-23 01:19:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-23 01:19:21,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-23 01:19:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_rx_buf [2022-07-23 01:19:21,037 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_rx_buf [2022-07-23 01:19:21,037 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-07-23 01:19:21,037 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-07-23 01:19:21,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-23 01:19:21,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-23 01:19:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure __net_timestamp [2022-07-23 01:19:21,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __net_timestamp [2022-07-23 01:19:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~TO~C_INT [2022-07-23 01:19:21,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~TO~C_INT [2022-07-23 01:19:21,039 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-07-23 01:19:21,039 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-07-23 01:19:21,039 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-23 01:19:21,039 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-23 01:19:21,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-23 01:19:21,041 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-23 01:19:21,041 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-23 01:19:21,041 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-23 01:19:21,041 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-23 01:19:21,041 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-23 01:19:21,042 INFO L130 BoogieDeclarations]: Found specification of procedure ns_ioctl [2022-07-23 01:19:21,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_ioctl [2022-07-23 01:19:21,042 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-07-23 01:19:21,042 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-07-23 01:19:21,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 01:19:21,042 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-23 01:19:21,042 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-23 01:19:21,043 INFO L130 BoogieDeclarations]: Found specification of procedure process_rsq [2022-07-23 01:19:21,043 INFO L138 BoogieDeclarations]: Found implementation of procedure process_rsq [2022-07-23 01:19:21,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 01:19:21,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-23 01:19:21,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-23 01:19:21,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-23 01:19:21,044 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-23 01:19:21,044 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-23 01:19:21,044 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_alloc_skb [2022-07-23 01:19:21,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_alloc_skb [2022-07-23 01:19:21,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-23 01:19:21,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-23 01:19:21,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-23 01:19:21,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 01:19:21,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 01:19:21,045 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-07-23 01:19:21,046 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-07-23 01:19:21,046 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2022-07-23 01:19:21,046 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2022-07-23 01:19:21,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-23 01:19:21,046 INFO L130 BoogieDeclarations]: Found specification of procedure dequeue_sm_buf [2022-07-23 01:19:21,047 INFO L138 BoogieDeclarations]: Found implementation of procedure dequeue_sm_buf [2022-07-23 01:19:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-23 01:19:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-23 01:19:21,047 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-23 01:19:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-23 01:19:21,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-23 01:19:21,048 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-07-23 01:19:21,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-07-23 01:19:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-23 01:19:21,049 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-23 01:19:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure push_rxbufs [2022-07-23 01:19:21,049 INFO L138 BoogieDeclarations]: Found implementation of procedure push_rxbufs [2022-07-23 01:19:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure ns_phy_get [2022-07-23 01:19:21,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_phy_get [2022-07-23 01:19:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-23 01:19:21,049 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-23 01:19:21,050 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-23 01:19:21,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-23 01:19:21,050 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-07-23 01:19:21,050 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-07-23 01:19:21,050 INFO L130 BoogieDeclarations]: Found specification of procedure ns_close [2022-07-23 01:19:21,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_close [2022-07-23 01:19:21,051 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-23 01:19:21,051 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-23 01:19:21,051 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-23 01:19:21,051 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-23 01:19:21,051 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-23 01:19:21,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-23 01:19:21,052 INFO L130 BoogieDeclarations]: Found specification of procedure nicstar_read_eprom [2022-07-23 01:19:21,054 INFO L138 BoogieDeclarations]: Found implementation of procedure nicstar_read_eprom [2022-07-23 01:19:21,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-23 01:19:21,055 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-23 01:19:21,055 INFO L130 BoogieDeclarations]: Found specification of procedure ns_phy_put [2022-07-23 01:19:21,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_phy_put [2022-07-23 01:19:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-23 01:19:21,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-23 01:19:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-23 01:19:21,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-23 01:19:21,063 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_iov_buf [2022-07-23 01:19:21,063 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_iov_buf [2022-07-23 01:19:21,063 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-07-23 01:19:21,063 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-07-23 01:19:21,063 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-23 01:19:21,064 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-23 01:19:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-23 01:19:21,064 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-23 01:19:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-07-23 01:19:21,064 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-07-23 01:19:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-23 01:19:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure ns_send [2022-07-23 01:19:21,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_send [2022-07-23 01:19:21,065 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-07-23 01:19:21,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-07-23 01:19:21,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-23 01:19:21,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-23 01:19:21,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-23 01:19:21,065 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-07-23 01:19:21,065 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-07-23 01:19:21,065 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-23 01:19:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-23 01:19:21,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-23 01:19:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-23 01:19:21,066 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-07-23 01:19:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-07-23 01:19:21,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-23 01:19:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-23 01:19:21,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 01:19:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-23 01:19:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-23 01:19:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-07-23 01:19:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-07-23 01:19:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-07-23 01:19:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-07-23 01:19:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure idr_find [2022-07-23 01:19:21,068 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_find [2022-07-23 01:19:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 01:19:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-23 01:19:21,068 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-23 01:19:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-23 01:19:21,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-23 01:19:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 01:19:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-23 01:19:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-23 01:19:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-23 01:19:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-23 01:19:21,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-23 01:19:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-07-23 01:19:21,069 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-07-23 01:19:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-23 01:19:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-23 01:19:21,070 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-23 01:19:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure free_scq [2022-07-23 01:19:21,070 INFO L138 BoogieDeclarations]: Found implementation of procedure free_scq [2022-07-23 01:19:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2022-07-23 01:19:21,070 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2022-07-23 01:19:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2022-07-23 01:19:21,070 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2022-07-23 01:19:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_iovec_rx_bufs [2022-07-23 01:19:21,070 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_iovec_rx_bufs [2022-07-23 01:19:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-23 01:19:21,071 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-23 01:19:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure nicstar_remove_one [2022-07-23 01:19:21,071 INFO L138 BoogieDeclarations]: Found implementation of procedure nicstar_remove_one [2022-07-23 01:19:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-07-23 01:19:21,071 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-07-23 01:19:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-23 01:19:21,071 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-23 01:19:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-23 01:19:21,072 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-23 01:19:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure ns_init_card_error [2022-07-23 01:19:21,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_init_card_error [2022-07-23 01:19:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-07-23 01:19:21,072 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-07-23 01:19:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-07-23 01:19:21,072 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-07-23 01:19:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-23 01:19:21,073 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-23 01:19:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure ns_write_sram [2022-07-23 01:19:21,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_write_sram [2022-07-23 01:19:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-07-23 01:19:21,073 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-07-23 01:19:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-23 01:19:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-23 01:19:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-23 01:19:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-07-23 01:19:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-07-23 01:19:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-07-23 01:19:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-07-23 01:19:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 01:19:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 01:19:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-07-23 01:19:21,075 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-07-23 01:19:21,941 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 01:19:21,944 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 01:19:26,163 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-23 01:20:25,159 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 01:20:25,184 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 01:20:25,185 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-23 01:20:25,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:20:25 BoogieIcfgContainer [2022-07-23 01:20:25,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 01:20:25,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 01:20:25,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 01:20:25,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 01:20:25,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:19:16" (1/3) ... [2022-07-23 01:20:25,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63aec91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:20:25, skipping insertion in model container [2022-07-23 01:20:25,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:19:20" (2/3) ... [2022-07-23 01:20:25,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63aec91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:20:25, skipping insertion in model container [2022-07-23 01:20:25,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:20:25" (3/3) ... [2022-07-23 01:20:25,198 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-23 01:20:25,212 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 01:20:25,212 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-23 01:20:25,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 01:20:25,299 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@5d68a901, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55b88922 [2022-07-23 01:20:25,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-23 01:20:25,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 2029 states, 1373 states have (on average 1.3466860888565186) internal successors, (1849), 1444 states have internal predecessors, (1849), 569 states have call successors, (569), 90 states have call predecessors, (569), 89 states have return successors, (563), 552 states have call predecessors, (563), 563 states have call successors, (563) [2022-07-23 01:20:25,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-23 01:20:25,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:20:25,349 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:20:25,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:20:25,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:20:25,355 INFO L85 PathProgramCache]: Analyzing trace with hash 703457863, now seen corresponding path program 1 times [2022-07-23 01:20:25,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:20:25,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41297942] [2022-07-23 01:20:25,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:20:25,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:20:25,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:20:25,379 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 01:20:25,406 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 01:20:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:20:26,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-23 01:20:26,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:20:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-23 01:20:26,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:20:26,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:20:26,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41297942] [2022-07-23 01:20:26,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41297942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:20:26,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:20:26,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:20:26,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181198176] [2022-07-23 01:20:26,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:20:26,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 01:20:26,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:20:26,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 01:20:26,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 01:20:26,696 INFO L87 Difference]: Start difference. First operand has 2029 states, 1373 states have (on average 1.3466860888565186) internal successors, (1849), 1444 states have internal predecessors, (1849), 569 states have call successors, (569), 90 states have call predecessors, (569), 89 states have return successors, (563), 552 states have call predecessors, (563), 563 states have call successors, (563) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 01:20:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:20:26,943 INFO L93 Difference]: Finished difference Result 4041 states and 6043 transitions. [2022-07-23 01:20:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 01:20:26,946 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 149 [2022-07-23 01:20:26,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:20:26,982 INFO L225 Difference]: With dead ends: 4041 [2022-07-23 01:20:26,983 INFO L226 Difference]: Without dead ends: 1993 [2022-07-23 01:20:27,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 01:20:27,015 INFO L413 NwaCegarLoop]: 2953 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 01:20:27,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2953 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 01:20:27,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2022-07-23 01:20:27,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1993. [2022-07-23 01:20:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1345 states have (on average 1.3405204460966542) internal successors, (1803), 1406 states have internal predecessors, (1803), 559 states have call successors, (559), 89 states have call predecessors, (559), 88 states have return successors, (558), 547 states have call predecessors, (558), 558 states have call successors, (558) [2022-07-23 01:20:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2920 transitions. [2022-07-23 01:20:27,249 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2920 transitions. Word has length 149 [2022-07-23 01:20:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:20:27,249 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 2920 transitions. [2022-07-23 01:20:27,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 01:20:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2920 transitions. [2022-07-23 01:20:27,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-23 01:20:27,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:20:27,263 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:20:27,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-23 01:20:27,487 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 01:20:27,488 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:20:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:20:27,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1341829763, now seen corresponding path program 1 times [2022-07-23 01:20:27,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:20:27,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607597077] [2022-07-23 01:20:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:20:27,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:20:27,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:20:27,493 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 01:20:27,495 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 01:20:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:20:28,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 01:20:28,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:20:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-23 01:20:29,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:20:29,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:20:29,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607597077] [2022-07-23 01:20:29,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607597077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:20:29,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:20:29,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 01:20:29,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746836552] [2022-07-23 01:20:29,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:20:29,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 01:20:29,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:20:29,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 01:20:29,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 01:20:29,136 INFO L87 Difference]: Start difference. First operand 1993 states and 2920 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-23 01:20:29,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:20:29,860 INFO L93 Difference]: Finished difference Result 3978 states and 5831 transitions. [2022-07-23 01:20:29,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 01:20:29,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 149 [2022-07-23 01:20:29,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:20:29,877 INFO L225 Difference]: With dead ends: 3978 [2022-07-23 01:20:29,877 INFO L226 Difference]: Without dead ends: 1994 [2022-07-23 01:20:29,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-23 01:20:29,890 INFO L413 NwaCegarLoop]: 2913 mSDtfsCounter, 6 mSDsluCounter, 11634 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14547 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 01:20:29,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 14547 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 01:20:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-07-23 01:20:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1994. [2022-07-23 01:20:29,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1346 states have (on average 1.3402674591381871) internal successors, (1804), 1407 states have internal predecessors, (1804), 559 states have call successors, (559), 89 states have call predecessors, (559), 88 states have return successors, (558), 547 states have call predecessors, (558), 558 states have call successors, (558) [2022-07-23 01:20:29,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 2921 transitions. [2022-07-23 01:20:29,992 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 2921 transitions. Word has length 149 [2022-07-23 01:20:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:20:29,995 INFO L495 AbstractCegarLoop]: Abstraction has 1994 states and 2921 transitions. [2022-07-23 01:20:29,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-23 01:20:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 2921 transitions. [2022-07-23 01:20:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-23 01:20:30,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:20:30,000 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:20:30,037 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 01:20:30,219 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 01:20:30,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:20:30,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:20:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash -899632067, now seen corresponding path program 1 times [2022-07-23 01:20:30,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:20:30,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994866385] [2022-07-23 01:20:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:20:30,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:20:30,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:20:30,225 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 01:20:30,276 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 01:20:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:20:31,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 01:20:31,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:20:32,027 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-07-23 01:20:32,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:20:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-07-23 01:20:33,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:20:33,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994866385] [2022-07-23 01:20:33,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994866385] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:20:33,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:20:33,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-23 01:20:33,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997026613] [2022-07-23 01:20:33,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:20:33,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 01:20:33,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:20:33,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 01:20:33,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-23 01:20:33,561 INFO L87 Difference]: Start difference. First operand 1994 states and 2921 transitions. Second operand has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-23 01:20:34,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:20:34,884 INFO L93 Difference]: Finished difference Result 3990 states and 5847 transitions. [2022-07-23 01:20:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 01:20:34,885 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2022-07-23 01:20:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:20:34,902 INFO L225 Difference]: With dead ends: 3990 [2022-07-23 01:20:34,903 INFO L226 Difference]: Without dead ends: 2010 [2022-07-23 01:20:34,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-23 01:20:34,922 INFO L413 NwaCegarLoop]: 2915 mSDtfsCounter, 12 mSDsluCounter, 11640 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 14555 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-23 01:20:34,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 14555 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-23 01:20:34,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-07-23 01:20:34,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 2010. [2022-07-23 01:20:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1357 states have (on average 1.3382461311717022) internal successors, (1816), 1418 states have internal predecessors, (1816), 561 states have call successors, (561), 92 states have call predecessors, (561), 91 states have return successors, (560), 549 states have call predecessors, (560), 560 states have call successors, (560) [2022-07-23 01:20:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2937 transitions. [2022-07-23 01:20:35,018 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2937 transitions. Word has length 153 [2022-07-23 01:20:35,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:20:35,020 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 2937 transitions. [2022-07-23 01:20:35,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-23 01:20:35,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2937 transitions. [2022-07-23 01:20:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-23 01:20:35,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:20:35,025 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:20:35,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-23 01:20:35,251 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 01:20:35,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:20:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:20:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash -437318811, now seen corresponding path program 2 times [2022-07-23 01:20:35,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:20:35,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368263658] [2022-07-23 01:20:35,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:20:35,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:20:35,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:20:35,255 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 01:20:35,258 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 01:20:36,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:20:36,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:20:36,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:20:36,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:20:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-07-23 01:20:36,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:20:36,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:20:36,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368263658] [2022-07-23 01:20:36,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368263658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:20:36,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:20:36,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:20:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513039875] [2022-07-23 01:20:36,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:20:36,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:20:36,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:20:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:20:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:20:36,292 INFO L87 Difference]: Start difference. First operand 2010 states and 2937 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-23 01:20:36,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:20:36,649 INFO L93 Difference]: Finished difference Result 5482 states and 7998 transitions. [2022-07-23 01:20:36,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:20:36,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 156 [2022-07-23 01:20:36,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:20:36,678 INFO L225 Difference]: With dead ends: 5482 [2022-07-23 01:20:36,678 INFO L226 Difference]: Without dead ends: 3509 [2022-07-23 01:20:36,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 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 01:20:36,694 INFO L413 NwaCegarLoop]: 3440 mSDtfsCounter, 2194 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 6313 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:20:36,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 6313 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 01:20:36,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2022-07-23 01:20:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 3505. [2022-07-23 01:20:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 2376 states have (on average 1.3434343434343434) internal successors, (3192), 2486 states have internal predecessors, (3192), 956 states have call successors, (956), 173 states have call predecessors, (956), 172 states have return successors, (955), 933 states have call predecessors, (955), 955 states have call successors, (955) [2022-07-23 01:20:36,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 5103 transitions. [2022-07-23 01:20:36,856 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 5103 transitions. Word has length 156 [2022-07-23 01:20:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:20:36,857 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 5103 transitions. [2022-07-23 01:20:36,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-23 01:20:36,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 5103 transitions. [2022-07-23 01:20:36,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-23 01:20:36,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:20:36,860 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:20:36,890 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 01:20:37,076 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 01:20:37,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:20:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:20:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1645701321, now seen corresponding path program 1 times [2022-07-23 01:20:37,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:20:37,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379404148] [2022-07-23 01:20:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:20:37,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:20:37,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:20:37,081 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 01:20:37,084 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 01:20:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:20:38,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 01:20:38,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:20:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-07-23 01:20:38,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:20:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-23 01:20:40,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:20:40,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379404148] [2022-07-23 01:20:40,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379404148] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:20:40,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:20:40,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-23 01:20:40,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614244871] [2022-07-23 01:20:40,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:20:40,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 01:20:40,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:20:40,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 01:20:40,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-23 01:20:40,823 INFO L87 Difference]: Start difference. First operand 3505 states and 5103 transitions. Second operand has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-23 01:20:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:20:42,548 INFO L93 Difference]: Finished difference Result 6993 states and 10187 transitions. [2022-07-23 01:20:42,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 01:20:42,550 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 163 [2022-07-23 01:20:42,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:20:42,577 INFO L225 Difference]: With dead ends: 6993 [2022-07-23 01:20:42,577 INFO L226 Difference]: Without dead ends: 3507 [2022-07-23 01:20:42,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-07-23 01:20:42,600 INFO L413 NwaCegarLoop]: 2916 mSDtfsCounter, 23 mSDsluCounter, 14556 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 17472 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-23 01:20:42,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 17472 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-23 01:20:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2022-07-23 01:20:42,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3507. [2022-07-23 01:20:42,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 2378 states have (on average 1.3431455004205215) internal successors, (3194), 2488 states have internal predecessors, (3194), 956 states have call successors, (956), 173 states have call predecessors, (956), 172 states have return successors, (955), 933 states have call predecessors, (955), 955 states have call successors, (955) [2022-07-23 01:20:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 5105 transitions. [2022-07-23 01:20:42,751 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 5105 transitions. Word has length 163 [2022-07-23 01:20:42,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:20:42,752 INFO L495 AbstractCegarLoop]: Abstraction has 3507 states and 5105 transitions. [2022-07-23 01:20:42,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-23 01:20:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 5105 transitions. [2022-07-23 01:20:42,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-23 01:20:42,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:20:42,758 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:20:42,794 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 01:20:42,971 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 01:20:42,972 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:20:42,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:20:42,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1465862159, now seen corresponding path program 2 times [2022-07-23 01:20:42,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:20:42,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735151482] [2022-07-23 01:20:42,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:20:42,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:20:42,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:20:42,976 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 01:20:42,978 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 01:20:43,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:20:43,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:20:43,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:20:43,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:20:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-07-23 01:20:44,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:20:44,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:20:44,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735151482] [2022-07-23 01:20:44,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735151482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:20:44,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:20:44,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:20:44,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320326783] [2022-07-23 01:20:44,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:20:44,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:20:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:20:44,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:20:44,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:20:44,008 INFO L87 Difference]: Start difference. First operand 3507 states and 5105 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-23 01:20:44,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:20:44,629 INFO L93 Difference]: Finished difference Result 9567 states and 13917 transitions. [2022-07-23 01:20:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:20:44,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 166 [2022-07-23 01:20:44,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:20:44,670 INFO L225 Difference]: With dead ends: 9567 [2022-07-23 01:20:44,670 INFO L226 Difference]: Without dead ends: 6118 [2022-07-23 01:20:44,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 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 01:20:44,696 INFO L413 NwaCegarLoop]: 3363 mSDtfsCounter, 2353 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 6148 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 01:20:44,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2353 Valid, 6148 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 01:20:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2022-07-23 01:20:44,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 6111. [2022-07-23 01:20:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6111 states, 4131 states have (on average 1.3340595497458243) internal successors, (5511), 4325 states have internal predecessors, (5511), 1675 states have call successors, (1675), 305 states have call predecessors, (1675), 304 states have return successors, (1685), 1628 states have call predecessors, (1685), 1674 states have call successors, (1685) [2022-07-23 01:20:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6111 states to 6111 states and 8871 transitions. [2022-07-23 01:20:44,947 INFO L78 Accepts]: Start accepts. Automaton has 6111 states and 8871 transitions. Word has length 166 [2022-07-23 01:20:44,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:20:44,948 INFO L495 AbstractCegarLoop]: Abstraction has 6111 states and 8871 transitions. [2022-07-23 01:20:44,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-23 01:20:44,948 INFO L276 IsEmpty]: Start isEmpty. Operand 6111 states and 8871 transitions. [2022-07-23 01:20:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-23 01:20:44,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:20:44,951 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:20:44,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-23 01:20:45,172 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 01:20:45,173 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:20:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:20:45,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1108897071, now seen corresponding path program 1 times [2022-07-23 01:20:45,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:20:45,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152574529] [2022-07-23 01:20:45,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:20:45,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:20:45,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:20:45,177 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 01:20:45,179 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 01:20:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:20:46,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 01:20:46,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:20:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 64 proven. 6 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-23 01:20:47,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:20:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-23 01:20:49,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:20:49,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152574529] [2022-07-23 01:20:49,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152574529] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:20:49,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:20:49,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-23 01:20:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265372864] [2022-07-23 01:20:49,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:20:49,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-23 01:20:49,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:20:49,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-23 01:20:49,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-23 01:20:49,436 INFO L87 Difference]: Start difference. First operand 6111 states and 8871 transitions. Second operand has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 15 states have internal predecessors, (93), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-23 01:20:51,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:20:51,810 INFO L93 Difference]: Finished difference Result 12208 states and 17727 transitions. [2022-07-23 01:20:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 01:20:51,812 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 15 states have internal predecessors, (93), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 182 [2022-07-23 01:20:51,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:20:51,851 INFO L225 Difference]: With dead ends: 12208 [2022-07-23 01:20:51,851 INFO L226 Difference]: Without dead ends: 6114 [2022-07-23 01:20:51,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-23 01:20:51,879 INFO L413 NwaCegarLoop]: 2916 mSDtfsCounter, 21 mSDsluCounter, 23290 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26206 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-23 01:20:51,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 26206 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-23 01:20:51,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6114 states. [2022-07-23 01:20:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6114 to 6114. [2022-07-23 01:20:52,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 4134 states have (on average 1.3338171262699565) internal successors, (5514), 4328 states have internal predecessors, (5514), 1675 states have call successors, (1675), 305 states have call predecessors, (1675), 304 states have return successors, (1685), 1628 states have call predecessors, (1685), 1674 states have call successors, (1685) [2022-07-23 01:20:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 8874 transitions. [2022-07-23 01:20:52,121 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 8874 transitions. Word has length 182 [2022-07-23 01:20:52,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:20:52,121 INFO L495 AbstractCegarLoop]: Abstraction has 6114 states and 8874 transitions. [2022-07-23 01:20:52,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 15 states have internal predecessors, (93), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-23 01:20:52,122 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 8874 transitions. [2022-07-23 01:20:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-23 01:20:52,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:20:52,125 INFO L195 NwaCegarLoop]: trace histogram [13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:20:52,172 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 01:20:52,335 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 01:20:52,336 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:20:52,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:20:52,336 INFO L85 PathProgramCache]: Analyzing trace with hash 631131437, now seen corresponding path program 1 times [2022-07-23 01:20:52,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:20:52,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377104855] [2022-07-23 01:20:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:20:52,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:20:52,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:20:52,340 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 01:20:52,342 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 01:20:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:20:53,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 01:20:53,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:20:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 131 proven. 10 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-23 01:20:54,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:20:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 47 proven. 41 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-07-23 01:20:57,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:20:57,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377104855] [2022-07-23 01:20:57,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377104855] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:20:57,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:20:57,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-23 01:20:57,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573330892] [2022-07-23 01:20:57,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:20:57,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-23 01:20:57,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:20:57,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-23 01:20:57,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-23 01:20:57,385 INFO L87 Difference]: Start difference. First operand 6114 states and 8874 transitions. Second operand has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 17 states have internal predecessors, (98), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-23 01:20:59,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:20:59,654 INFO L93 Difference]: Finished difference Result 12220 states and 17741 transitions. [2022-07-23 01:20:59,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-23 01:20:59,656 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 17 states have internal predecessors, (98), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 188 [2022-07-23 01:20:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:20:59,699 INFO L225 Difference]: With dead ends: 12220 [2022-07-23 01:20:59,699 INFO L226 Difference]: Without dead ends: 6125 [2022-07-23 01:20:59,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-07-23 01:20:59,725 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 42 mSDsluCounter, 23285 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 26199 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-23 01:20:59,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 26199 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-23 01:20:59,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6125 states. [2022-07-23 01:20:59,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6125 to 6125. [2022-07-23 01:20:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6125 states, 4144 states have (on average 1.3334942084942085) internal successors, (5526), 4338 states have internal predecessors, (5526), 1675 states have call successors, (1675), 306 states have call predecessors, (1675), 305 states have return successors, (1685), 1628 states have call predecessors, (1685), 1674 states have call successors, (1685) [2022-07-23 01:20:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6125 states to 6125 states and 8886 transitions. [2022-07-23 01:21:00,001 INFO L78 Accepts]: Start accepts. Automaton has 6125 states and 8886 transitions. Word has length 188 [2022-07-23 01:21:00,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:21:00,002 INFO L495 AbstractCegarLoop]: Abstraction has 6125 states and 8886 transitions. [2022-07-23 01:21:00,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 17 states have internal predecessors, (98), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-23 01:21:00,002 INFO L276 IsEmpty]: Start isEmpty. Operand 6125 states and 8886 transitions. [2022-07-23 01:21:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-23 01:21:00,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:21:00,005 INFO L195 NwaCegarLoop]: trace histogram [15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:21:00,049 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 01:21:00,205 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 01:21:00,206 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:21:00,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:21:00,207 INFO L85 PathProgramCache]: Analyzing trace with hash 141595824, now seen corresponding path program 1 times [2022-07-23 01:21:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:21:00,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844810825] [2022-07-23 01:21:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:21:00,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:21:00,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:21:00,212 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 01:21:00,214 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 01:21:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:21:01,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 01:21:01,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:21:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 156 proven. 15 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-23 01:21:02,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:21:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 54 proven. 57 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-23 01:21:06,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:21:06,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844810825] [2022-07-23 01:21:06,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844810825] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:21:06,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:21:06,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-23 01:21:06,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906399974] [2022-07-23 01:21:06,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:21:06,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 01:21:06,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:21:06,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 01:21:06,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-07-23 01:21:06,125 INFO L87 Difference]: Start difference. First operand 6125 states and 8886 transitions. Second operand has 19 states, 17 states have (on average 5.823529411764706) internal successors, (99), 19 states have internal predecessors, (99), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-23 01:21:08,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:21:08,950 INFO L93 Difference]: Finished difference Result 12215 states and 17732 transitions. [2022-07-23 01:21:08,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-23 01:21:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.823529411764706) internal successors, (99), 19 states have internal predecessors, (99), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 189 [2022-07-23 01:21:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:21:08,984 INFO L225 Difference]: With dead ends: 12215 [2022-07-23 01:21:08,984 INFO L226 Difference]: Without dead ends: 6128 [2022-07-23 01:21:09,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-07-23 01:21:09,015 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 43 mSDsluCounter, 26193 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 29107 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-23 01:21:09,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 29107 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-23 01:21:09,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6128 states. [2022-07-23 01:21:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6128 to 6128. [2022-07-23 01:21:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6128 states, 4147 states have (on average 1.333252953942609) internal successors, (5529), 4341 states have internal predecessors, (5529), 1675 states have call successors, (1675), 306 states have call predecessors, (1675), 305 states have return successors, (1685), 1628 states have call predecessors, (1685), 1674 states have call successors, (1685) [2022-07-23 01:21:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6128 states to 6128 states and 8889 transitions. [2022-07-23 01:21:09,354 INFO L78 Accepts]: Start accepts. Automaton has 6128 states and 8889 transitions. Word has length 189 [2022-07-23 01:21:09,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:21:09,354 INFO L495 AbstractCegarLoop]: Abstraction has 6128 states and 8889 transitions. [2022-07-23 01:21:09,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.823529411764706) internal successors, (99), 19 states have internal predecessors, (99), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-23 01:21:09,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6128 states and 8889 transitions. [2022-07-23 01:21:09,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-23 01:21:09,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:21:09,358 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:21:09,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-23 01:21:09,559 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 01:21:09,559 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:21:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:21:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1302833676, now seen corresponding path program 2 times [2022-07-23 01:21:09,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:21:09,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401171787] [2022-07-23 01:21:09,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:21:09,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:21:09,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:21:09,579 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 01:21:09,600 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 01:21:10,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:21:10,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:21:10,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 01:21:10,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:21:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-07-23 01:21:12,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:21:12,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:21:12,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401171787] [2022-07-23 01:21:12,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401171787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:21:12,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:21:12,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 01:21:12,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256200876] [2022-07-23 01:21:12,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:21:12,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 01:21:12,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:21:12,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 01:21:12,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:21:12,934 INFO L87 Difference]: Start difference. First operand 6128 states and 8889 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 01:21:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:21:13,687 INFO L93 Difference]: Finished difference Result 18288 states and 26689 transitions. [2022-07-23 01:21:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 01:21:13,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 191 [2022-07-23 01:21:13,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:21:13,750 INFO L225 Difference]: With dead ends: 18288 [2022-07-23 01:21:13,750 INFO L226 Difference]: Without dead ends: 12229 [2022-07-23 01:21:13,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 01:21:13,782 INFO L413 NwaCegarLoop]: 4071 mSDtfsCounter, 2890 mSDsluCounter, 11009 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 15080 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 01:21:13,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 15080 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 01:21:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12229 states. [2022-07-23 01:21:14,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12229 to 12214. [2022-07-23 01:21:14,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12214 states, 8268 states have (on average 1.332970488630866) internal successors, (11021), 8660 states have internal predecessors, (11021), 3335 states have call successors, (3335), 607 states have call predecessors, (3335), 610 states have return successors, (3428), 3242 states have call predecessors, (3428), 3334 states have call successors, (3428) [2022-07-23 01:21:14,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12214 states to 12214 states and 17784 transitions. [2022-07-23 01:21:14,316 INFO L78 Accepts]: Start accepts. Automaton has 12214 states and 17784 transitions. Word has length 191 [2022-07-23 01:21:14,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:21:14,316 INFO L495 AbstractCegarLoop]: Abstraction has 12214 states and 17784 transitions. [2022-07-23 01:21:14,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 01:21:14,317 INFO L276 IsEmpty]: Start isEmpty. Operand 12214 states and 17784 transitions. [2022-07-23 01:21:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-23 01:21:14,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:21:14,321 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:21:14,350 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 01:21:14,535 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 01:21:14,535 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:21:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:21:14,536 INFO L85 PathProgramCache]: Analyzing trace with hash -261359955, now seen corresponding path program 2 times [2022-07-23 01:21:14,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:21:14,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849456080] [2022-07-23 01:21:14,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:21:14,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:21:14,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:21:14,540 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 01:21:14,543 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 01:21:15,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:21:15,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:21:15,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 01:21:15,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:21:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-07-23 01:21:17,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:21:17,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:21:17,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849456080] [2022-07-23 01:21:17,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849456080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:21:17,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:21:17,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 01:21:17,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905189423] [2022-07-23 01:21:17,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:21:17,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 01:21:17,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:21:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 01:21:17,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:21:17,742 INFO L87 Difference]: Start difference. First operand 12214 states and 17784 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 01:21:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:21:18,672 INFO L93 Difference]: Finished difference Result 36568 states and 53502 transitions. [2022-07-23 01:21:18,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 01:21:18,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 192 [2022-07-23 01:21:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:21:18,802 INFO L225 Difference]: With dead ends: 36568 [2022-07-23 01:21:18,802 INFO L226 Difference]: Without dead ends: 24423 [2022-07-23 01:21:18,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 01:21:18,864 INFO L413 NwaCegarLoop]: 3490 mSDtfsCounter, 2891 mSDsluCounter, 9847 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2891 SdHoareTripleChecker+Valid, 13337 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:21:18,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2891 Valid, 13337 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 01:21:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24423 states. [2022-07-23 01:21:19,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24423 to 24396. [2022-07-23 01:21:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24396 states, 16520 states have (on average 1.3325665859564164) internal successors, (22014), 17304 states have internal predecessors, (22014), 6655 states have call successors, (6655), 1213 states have call predecessors, (6655), 1220 states have return successors, (6946), 6470 states have call predecessors, (6946), 6654 states have call successors, (6946) [2022-07-23 01:21:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24396 states to 24396 states and 35615 transitions. [2022-07-23 01:21:20,089 INFO L78 Accepts]: Start accepts. Automaton has 24396 states and 35615 transitions. Word has length 192 [2022-07-23 01:21:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:21:20,090 INFO L495 AbstractCegarLoop]: Abstraction has 24396 states and 35615 transitions. [2022-07-23 01:21:20,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 01:21:20,090 INFO L276 IsEmpty]: Start isEmpty. Operand 24396 states and 35615 transitions. [2022-07-23 01:21:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-23 01:21:20,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:21:20,093 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:21:20,127 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 01:21:20,315 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 01:21:20,316 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:21:20,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:21:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash 304099754, now seen corresponding path program 1 times [2022-07-23 01:21:20,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:21:20,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225297054] [2022-07-23 01:21:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:21:20,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:21:20,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:21:20,320 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 01:21:20,322 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 01:21:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:21:21,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 01:21:21,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:21:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 183 proven. 21 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-07-23 01:21:22,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:21:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 61 proven. 76 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-07-23 01:21:27,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:21:27,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225297054] [2022-07-23 01:21:27,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225297054] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:21:27,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:21:27,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-23 01:21:27,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459615531] [2022-07-23 01:21:27,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:21:27,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-23 01:21:27,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:21:27,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-23 01:21:27,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-23 01:21:27,329 INFO L87 Difference]: Start difference. First operand 24396 states and 35615 transitions. Second operand has 21 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-23 01:21:31,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:21:31,867 INFO L93 Difference]: Finished difference Result 48775 states and 71214 transitions. [2022-07-23 01:21:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-23 01:21:31,868 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 190 [2022-07-23 01:21:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:21:32,032 INFO L225 Difference]: With dead ends: 48775 [2022-07-23 01:21:32,032 INFO L226 Difference]: Without dead ends: 24405 [2022-07-23 01:21:32,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2022-07-23 01:21:32,187 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 43 mSDsluCounter, 37832 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 40746 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-23 01:21:32,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 40746 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-23 01:21:32,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24405 states. [2022-07-23 01:21:33,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24405 to 24405. [2022-07-23 01:21:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24405 states, 16529 states have (on average 1.3323855042652308) internal successors, (22023), 17313 states have internal predecessors, (22023), 6655 states have call successors, (6655), 1213 states have call predecessors, (6655), 1220 states have return successors, (6946), 6470 states have call predecessors, (6946), 6654 states have call successors, (6946) [2022-07-23 01:21:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24405 states to 24405 states and 35624 transitions. [2022-07-23 01:21:33,446 INFO L78 Accepts]: Start accepts. Automaton has 24405 states and 35624 transitions. Word has length 190 [2022-07-23 01:21:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:21:33,447 INFO L495 AbstractCegarLoop]: Abstraction has 24405 states and 35624 transitions. [2022-07-23 01:21:33,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-23 01:21:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 24405 states and 35624 transitions. [2022-07-23 01:21:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-23 01:21:33,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:21:33,451 INFO L195 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:21:33,490 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 01:21:33,663 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 01:21:33,664 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:21:33,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:21:33,664 INFO L85 PathProgramCache]: Analyzing trace with hash -35486458, now seen corresponding path program 2 times [2022-07-23 01:21:33,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:21:33,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314970748] [2022-07-23 01:21:33,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:21:33,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:21:33,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:21:33,668 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 01:21:33,827 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 01:21:34,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:21:34,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:21:34,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 01:21:34,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:21:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-23 01:21:37,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:21:37,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:21:37,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314970748] [2022-07-23 01:21:37,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314970748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:21:37,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:21:37,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 01:21:37,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205370949] [2022-07-23 01:21:37,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:21:37,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 01:21:37,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:21:37,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 01:21:37,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:21:37,340 INFO L87 Difference]: Start difference. First operand 24405 states and 35624 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 01:21:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:21:38,824 INFO L93 Difference]: Finished difference Result 73191 states and 107286 transitions. [2022-07-23 01:21:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 01:21:38,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 192 [2022-07-23 01:21:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:21:39,126 INFO L225 Difference]: With dead ends: 73191 [2022-07-23 01:21:39,127 INFO L226 Difference]: Without dead ends: 48856 [2022-07-23 01:21:39,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 01:21:39,424 INFO L413 NwaCegarLoop]: 4073 mSDtfsCounter, 2889 mSDsluCounter, 11013 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 15086 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:21:39,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2889 Valid, 15086 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 01:21:39,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48856 states. [2022-07-23 01:21:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48856 to 48805. [2022-07-23 01:21:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48805 states, 33061 states have (on average 1.331447929584707) internal successors, (44019), 34629 states have internal predecessors, (44019), 13295 states have call successors, (13295), 2433 states have call predecessors, (13295), 2448 states have return successors, (14070), 12926 states have call predecessors, (14070), 13294 states have call successors, (14070) [2022-07-23 01:21:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48805 states to 48805 states and 71384 transitions. [2022-07-23 01:21:41,386 INFO L78 Accepts]: Start accepts. Automaton has 48805 states and 71384 transitions. Word has length 192 [2022-07-23 01:21:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:21:41,386 INFO L495 AbstractCegarLoop]: Abstraction has 48805 states and 71384 transitions. [2022-07-23 01:21:41,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 01:21:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 48805 states and 71384 transitions. [2022-07-23 01:21:41,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-23 01:21:41,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:21:41,390 INFO L195 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:21:41,417 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 01:21:41,611 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 01:21:41,612 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:21:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:21:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash 597209677, now seen corresponding path program 2 times [2022-07-23 01:21:41,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:21:41,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397733574] [2022-07-23 01:21:41,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:21:41,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:21:41,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:21:41,616 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 01:21:41,617 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 01:21:42,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:21:42,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:21:42,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 01:21:42,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:21:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-23 01:21:44,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:21:44,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:21:44,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397733574] [2022-07-23 01:21:44,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397733574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:21:44,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:21:44,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 01:21:44,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765649800] [2022-07-23 01:21:44,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:21:44,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 01:21:44,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:21:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 01:21:44,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:21:44,887 INFO L87 Difference]: Start difference. First operand 48805 states and 71384 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 01:21:47,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:21:47,556 INFO L93 Difference]: Finished difference Result 145775 states and 213997 transitions. [2022-07-23 01:21:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 01:21:47,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 191 [2022-07-23 01:21:47,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:21:48,516 INFO L225 Difference]: With dead ends: 145775 [2022-07-23 01:21:48,516 INFO L226 Difference]: Without dead ends: 97040 [2022-07-23 01:21:48,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 01:21:48,781 INFO L413 NwaCegarLoop]: 4844 mSDtfsCounter, 2890 mSDsluCounter, 12554 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 17398 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 01:21:48,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 17398 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 01:21:48,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97040 states. [2022-07-23 01:21:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97040 to 96531. [2022-07-23 01:21:51,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96531 states, 65361 states have (on average 1.3318339682685394) internal successors, (87050), 68549 states have internal predecessors, (87050), 26319 states have call successors, (26319), 4817 states have call predecessors, (26319), 4850 states have return successors, (28220), 25510 states have call predecessors, (28220), 26318 states have call successors, (28220) [2022-07-23 01:21:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96531 states to 96531 states and 141589 transitions. [2022-07-23 01:21:52,747 INFO L78 Accepts]: Start accepts. Automaton has 96531 states and 141589 transitions. Word has length 191 [2022-07-23 01:21:52,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:21:52,748 INFO L495 AbstractCegarLoop]: Abstraction has 96531 states and 141589 transitions. [2022-07-23 01:21:52,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 01:21:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 96531 states and 141589 transitions. [2022-07-23 01:21:52,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-23 01:21:52,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:21:52,758 INFO L195 NwaCegarLoop]: trace histogram [19, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-23 01:21:52,788 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 01:21:52,979 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 01:21:52,979 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:21:52,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:21:52,980 INFO L85 PathProgramCache]: Analyzing trace with hash -132391511, now seen corresponding path program 1 times [2022-07-23 01:21:52,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:21:52,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110012034] [2022-07-23 01:21:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:21:52,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:21:52,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:21:52,983 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 01:21:52,986 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 01:21:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:21:54,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 01:21:54,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:21:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 282 proven. 28 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-07-23 01:21:55,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:22:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 68 proven. 98 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-07-23 01:22:01,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:22:01,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110012034] [2022-07-23 01:22:01,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110012034] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:22:01,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:22:01,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-07-23 01:22:01,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749259107] [2022-07-23 01:22:01,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:22:01,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-23 01:22:01,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:22:01,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-23 01:22:01,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-07-23 01:22:01,112 INFO L87 Difference]: Start difference. First operand 96531 states and 141589 transitions. Second operand has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 23 states have internal predecessors, (102), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-23 01:22:07,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:22:07,272 INFO L93 Difference]: Finished difference Result 193117 states and 283258 transitions. [2022-07-23 01:22:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-23 01:22:07,273 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 23 states have internal predecessors, (102), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 200 [2022-07-23 01:22:07,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:22:08,007 INFO L225 Difference]: With dead ends: 193117 [2022-07-23 01:22:08,007 INFO L226 Difference]: Without dead ends: 96564 [2022-07-23 01:22:08,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2022-07-23 01:22:08,368 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 56 mSDsluCounter, 32019 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 34933 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:22:08,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 34933 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-23 01:22:08,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96564 states. [2022-07-23 01:22:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96564 to 96564. [2022-07-23 01:22:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96564 states, 65394 states have (on average 1.3316665137474386) internal successors, (87083), 68582 states have internal predecessors, (87083), 26319 states have call successors, (26319), 4817 states have call predecessors, (26319), 4850 states have return successors, (28220), 25510 states have call predecessors, (28220), 26318 states have call successors, (28220) [2022-07-23 01:22:11,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96564 states to 96564 states and 141622 transitions. [2022-07-23 01:22:11,756 INFO L78 Accepts]: Start accepts. Automaton has 96564 states and 141622 transitions. Word has length 200 [2022-07-23 01:22:11,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:22:11,757 INFO L495 AbstractCegarLoop]: Abstraction has 96564 states and 141622 transitions. [2022-07-23 01:22:11,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 23 states have internal predecessors, (102), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-23 01:22:11,758 INFO L276 IsEmpty]: Start isEmpty. Operand 96564 states and 141622 transitions. [2022-07-23 01:22:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-23 01:22:11,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:22:11,761 INFO L195 NwaCegarLoop]: trace histogram [21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-23 01:22:11,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-23 01:22:11,975 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 01:22:11,975 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:22:11,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:22:11,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1489063885, now seen corresponding path program 2 times [2022-07-23 01:22:11,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:22:11,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638346215] [2022-07-23 01:22:11,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:22:11,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:22:11,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:22:11,978 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 01:22:11,979 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 01:22:13,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:22:13,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:22:13,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:22:13,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:22:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2022-07-23 01:22:15,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:22:15,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:22:15,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638346215] [2022-07-23 01:22:15,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638346215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:22:15,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:22:15,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:22:15,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114482839] [2022-07-23 01:22:15,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:22:15,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:22:15,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:22:15,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:22:15,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:22:15,963 INFO L87 Difference]: Start difference. First operand 96564 states and 141622 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-23 01:22:19,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:22:19,137 INFO L93 Difference]: Finished difference Result 150201 states and 220956 transitions. [2022-07-23 01:22:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:22:19,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 202 [2022-07-23 01:22:19,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:22:20,333 INFO L225 Difference]: With dead ends: 150201 [2022-07-23 01:22:20,334 INFO L226 Difference]: Without dead ends: 150198 [2022-07-23 01:22:20,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:22:20,688 INFO L413 NwaCegarLoop]: 3588 mSDtfsCounter, 2551 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2551 SdHoareTripleChecker+Valid, 5192 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 01:22:20,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2551 Valid, 5192 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 01:22:20,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150198 states. [2022-07-23 01:22:25,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150198 to 149018. [2022-07-23 01:22:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149018 states, 99766 states have (on average 1.3251708999057796) internal successors, (132207), 104792 states have internal predecessors, (132207), 40997 states have call successors, (40997), 8213 states have call predecessors, (40997), 8254 states have return successors, (45704), 39460 states have call predecessors, (45704), 40996 states have call successors, (45704) [2022-07-23 01:22:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149018 states to 149018 states and 218908 transitions. [2022-07-23 01:22:27,198 INFO L78 Accepts]: Start accepts. Automaton has 149018 states and 218908 transitions. Word has length 202 [2022-07-23 01:22:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:22:27,199 INFO L495 AbstractCegarLoop]: Abstraction has 149018 states and 218908 transitions. [2022-07-23 01:22:27,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-23 01:22:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 149018 states and 218908 transitions. [2022-07-23 01:22:27,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-23 01:22:27,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:22:27,203 INFO L195 NwaCegarLoop]: trace histogram [21, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-23 01:22:27,232 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 01:22:27,423 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 01:22:27,423 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:22:27,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:22:27,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1630107578, now seen corresponding path program 1 times [2022-07-23 01:22:27,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:22:27,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059179132] [2022-07-23 01:22:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:22:27,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:22:27,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:22:27,427 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 01:22:27,429 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 01:22:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:22:29,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 01:22:29,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:22:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2022-07-23 01:22:31,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:22:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2022-07-23 01:22:33,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:22:33,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059179132] [2022-07-23 01:22:33,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059179132] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 01:22:33,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 01:22:33,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2022-07-23 01:22:33,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543527197] [2022-07-23 01:22:33,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:22:33,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 01:22:33,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:22:33,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 01:22:33,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-23 01:22:33,088 INFO L87 Difference]: Start difference. First operand 149018 states and 218908 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16)