./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 eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-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-?-eb692b5 [2022-07-20 01:05:00,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 01:05:00,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 01:05:00,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 01:05:00,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 01:05:00,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 01:05:00,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 01:05:00,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 01:05:00,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 01:05:00,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 01:05:00,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 01:05:00,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 01:05:00,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 01:05:00,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 01:05:00,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 01:05:00,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 01:05:00,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 01:05:00,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 01:05:00,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 01:05:00,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 01:05:00,742 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 01:05:00,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 01:05:00,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 01:05:00,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 01:05:00,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 01:05:00,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 01:05:00,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 01:05:00,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 01:05:00,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 01:05:00,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 01:05:00,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 01:05:00,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 01:05:00,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 01:05:00,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 01:05:00,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 01:05:00,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 01:05:00,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 01:05:00,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 01:05:00,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 01:05:00,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 01:05:00,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 01:05:00,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 01:05:00,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 01:05:00,792 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 01:05:00,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 01:05:00,793 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 01:05:00,793 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 01:05:00,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 01:05:00,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 01:05:00,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 01:05:00,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 01:05:00,795 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 01:05:00,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 01:05:00,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 01:05:00,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 01:05:00,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 01:05:00,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 01:05:00,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 01:05:00,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 01:05:00,798 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 01:05:00,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 01:05:00,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 01:05:00,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 01:05:00,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 01:05:00,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:05:00,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 01:05:00,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 01:05:00,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 01:05:00,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 01:05:00,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 01:05:00,800 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 01:05:00,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 01:05:00,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 01:05:00,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b [2022-07-20 01:05:01,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 01:05:01,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 01:05:01,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 01:05:01,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 01:05:01,080 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 01:05:01,081 INFO L432 ainManager$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 [2022-07-20 01:05:01,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd6c6b288/2c986d93de594312b347a100b9db6824/FLAG825d3c7b5 [2022-07-20 01:05:01,942 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 01:05:01,942 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 [2022-07-20 01:05:01,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd6c6b288/2c986d93de594312b347a100b9db6824/FLAG825d3c7b5 [2022-07-20 01:05:02,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd6c6b288/2c986d93de594312b347a100b9db6824 [2022-07-20 01:05:02,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 01:05:02,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 01:05:02,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 01:05:02,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 01:05:02,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 01:05:02,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:02" (1/1) ... [2022-07-20 01:05:02,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d24d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:02, skipping insertion in model container [2022-07-20 01:05:02,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:02" (1/1) ... [2022-07-20 01:05:02,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 01:05:02,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:05:04,509 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] [2022-07-20 01:05:04,583 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-20 01:05:04,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:05:04,625 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 01:05:04,888 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) [2022-07-20 01:05:04,894 INFO L158 Benchmark]: Toolchain (without parser) took 2754.20ms. Allocated memory was 107.0MB in the beginning and 176.2MB in the end (delta: 69.2MB). Free memory was 76.2MB in the beginning and 98.1MB in the end (delta: -21.8MB). Peak memory consumption was 89.2MB. Max. memory is 16.1GB. [2022-07-20 01:05:04,895 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 107.0MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 01:05:04,897 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2750.59ms. Allocated memory was 107.0MB in the beginning and 176.2MB in the end (delta: 69.2MB). Free memory was 76.0MB in the beginning and 98.1MB in the end (delta: -22.1MB). Peak memory consumption was 89.2MB. Max. memory is 16.1GB. [2022-07-20 01:05:04,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 107.0MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2750.59ms. Allocated memory was 107.0MB in the beginning and 176.2MB in the end (delta: 69.2MB). Free memory was 76.0MB in the beginning and 98.1MB in the end (delta: -22.1MB). Peak memory consumption was 89.2MB. 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-?-eb692b5 [2022-07-20 01:05:06,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 01:05:06,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 01:05:06,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 01:05:06,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 01:05:06,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 01:05:06,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 01:05:06,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 01:05:06,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 01:05:06,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 01:05:06,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 01:05:06,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 01:05:06,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 01:05:06,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 01:05:06,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 01:05:06,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 01:05:06,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 01:05:06,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 01:05:06,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 01:05:06,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 01:05:06,770 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 01:05:06,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 01:05:06,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 01:05:06,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 01:05:06,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 01:05:06,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 01:05:06,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 01:05:06,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 01:05:06,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 01:05:06,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 01:05:06,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 01:05:06,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 01:05:06,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 01:05:06,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 01:05:06,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 01:05:06,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 01:05:06,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 01:05:06,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 01:05:06,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 01:05:06,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 01:05:06,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 01:05:06,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 01:05:06,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-20 01:05:06,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 01:05:06,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 01:05:06,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 01:05:06,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 01:05:06,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 01:05:06,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 01:05:06,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 01:05:06,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 01:05:06,826 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 01:05:06,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 01:05:06,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 01:05:06,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 01:05:06,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 01:05:06,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 01:05:06,833 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 01:05:06,834 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 01:05:06,834 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 01:05:06,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 01:05:06,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 01:05:06,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 01:05:06,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 01:05:06,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 01:05:06,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 01:05:06,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:05:06,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 01:05:06,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 01:05:06,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 01:05:06,836 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 01:05:06,836 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 01:05:06,837 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 01:05:06,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 01:05:06,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 01:05:06,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 01:05:06,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b [2022-07-20 01:05:07,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 01:05:07,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 01:05:07,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 01:05:07,166 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 01:05:07,167 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 01:05:07,168 INFO L432 ainManager$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 [2022-07-20 01:05:07,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d639ebe4/784bf95afc5243d79c60f027436463f8/FLAGbffca46c8 [2022-07-20 01:05:08,059 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 01:05:08,059 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 [2022-07-20 01:05:08,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d639ebe4/784bf95afc5243d79c60f027436463f8/FLAGbffca46c8 [2022-07-20 01:05:08,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d639ebe4/784bf95afc5243d79c60f027436463f8 [2022-07-20 01:05:08,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 01:05:08,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 01:05:08,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 01:05:08,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 01:05:08,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 01:05:08,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:08" (1/1) ... [2022-07-20 01:05:08,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1279ae87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:08, skipping insertion in model container [2022-07-20 01:05:08,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:08" (1/1) ... [2022-07-20 01:05:08,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 01:05:08,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:05:10,594 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] [2022-07-20 01:05:10,646 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-20 01:05:10,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:05:10,695 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 01:05:10,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:05:11,078 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] [2022-07-20 01:05:11,087 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-20 01:05:11,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:05:11,111 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 01:05:11,456 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] [2022-07-20 01:05:11,460 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-20 01:05:11,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:05:11,541 INFO L208 MainTranslator]: Completed translation [2022-07-20 01:05:11,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:11 WrapperNode [2022-07-20 01:05:11,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 01:05:11,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 01:05:11,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 01:05:11,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 01:05:11,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:11" (1/1) ... [2022-07-20 01:05:11,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:11" (1/1) ... [2022-07-20 01:05:11,832 INFO L137 Inliner]: procedures = 266, calls = 2297, calls flagged for inlining = 114, calls inlined = 111, statements flattened = 5915 [2022-07-20 01:05:11,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 01:05:11,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 01:05:11,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 01:05:11,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 01:05:11,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:11" (1/1) ... [2022-07-20 01:05:11,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:11" (1/1) ... [2022-07-20 01:05:11,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:11" (1/1) ... [2022-07-20 01:05:11,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:11" (1/1) ... [2022-07-20 01:05:12,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:11" (1/1) ... [2022-07-20 01:05:12,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:11" (1/1) ... [2022-07-20 01:05:12,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:11" (1/1) ... [2022-07-20 01:05:12,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 01:05:12,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 01:05:12,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 01:05:12,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 01:05:12,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:11" (1/1) ... [2022-07-20 01:05:12,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:05:12,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 01:05:12,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 01:05:12,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 01:05:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure atm_charge [2022-07-20 01:05:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_charge [2022-07-20 01:05:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-20 01:05:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-20 01:05:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-07-20 01:05:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-07-20 01:05:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure process_tsq [2022-07-20 01:05:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure process_tsq [2022-07-20 01:05:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 01:05:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-20 01:05:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-07-20 01:05:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-07-20 01:05:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-20 01:05:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-20 01:05:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 01:05:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 01:05:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 01:05:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 01:05:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-20 01:05:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-20 01:05:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure ns_open [2022-07-20 01:05:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_open [2022-07-20 01:05:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-20 01:05:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-20 01:05:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-20 01:05:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-20 01:05:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure ns_read_sram [2022-07-20 01:05:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_read_sram [2022-07-20 01:05:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure get_scq [2022-07-20 01:05:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure get_scq [2022-07-20 01:05:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 01:05:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 01:05:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_rx_buf [2022-07-20 01:05:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_rx_buf [2022-07-20 01:05:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-07-20 01:05:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-07-20 01:05:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-20 01:05:12,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-20 01:05:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure __net_timestamp [2022-07-20 01:05:12,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __net_timestamp [2022-07-20 01:05:12,336 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~TO~C_INT [2022-07-20 01:05:12,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~TO~C_INT [2022-07-20 01:05:12,336 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-07-20 01:05:12,337 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-07-20 01:05:12,337 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-20 01:05:12,337 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-20 01:05:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 01:05:12,338 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 01:05:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 01:05:12,339 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 01:05:12,339 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-20 01:05:12,339 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-20 01:05:12,339 INFO L130 BoogieDeclarations]: Found specification of procedure ns_ioctl [2022-07-20 01:05:12,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_ioctl [2022-07-20 01:05:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-07-20 01:05:12,340 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-07-20 01:05:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 01:05:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-20 01:05:12,340 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-20 01:05:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure process_rsq [2022-07-20 01:05:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure process_rsq [2022-07-20 01:05:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 01:05:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-20 01:05:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-20 01:05:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-20 01:05:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-20 01:05:12,342 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-20 01:05:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_alloc_skb [2022-07-20 01:05:12,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_alloc_skb [2022-07-20 01:05:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-20 01:05:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-20 01:05:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-20 01:05:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 01:05:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 01:05:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-07-20 01:05:12,343 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-07-20 01:05:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2022-07-20 01:05:12,344 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2022-07-20 01:05:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 01:05:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure dequeue_sm_buf [2022-07-20 01:05:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure dequeue_sm_buf [2022-07-20 01:05:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 01:05:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-20 01:05:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-20 01:05:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-20 01:05:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-20 01:05:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-07-20 01:05:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-07-20 01:05:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-20 01:05:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-20 01:05:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure push_rxbufs [2022-07-20 01:05:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure push_rxbufs [2022-07-20 01:05:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure ns_phy_get [2022-07-20 01:05:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_phy_get [2022-07-20 01:05:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-20 01:05:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-20 01:05:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-20 01:05:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-20 01:05:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-07-20 01:05:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-07-20 01:05:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure ns_close [2022-07-20 01:05:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_close [2022-07-20 01:05:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-20 01:05:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-20 01:05:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-20 01:05:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-20 01:05:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-20 01:05:12,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-20 01:05:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure nicstar_read_eprom [2022-07-20 01:05:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure nicstar_read_eprom [2022-07-20 01:05:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-20 01:05:12,353 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-20 01:05:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure ns_phy_put [2022-07-20 01:05:12,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_phy_put [2022-07-20 01:05:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-20 01:05:12,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-20 01:05:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-20 01:05:12,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-20 01:05:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_iov_buf [2022-07-20 01:05:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_iov_buf [2022-07-20 01:05:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-07-20 01:05:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-07-20 01:05:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-20 01:05:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-20 01:05:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-20 01:05:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-20 01:05:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-07-20 01:05:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-07-20 01:05:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-20 01:05:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure ns_send [2022-07-20 01:05:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_send [2022-07-20 01:05:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-07-20 01:05:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-07-20 01:05:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-20 01:05:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-20 01:05:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-20 01:05:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-07-20 01:05:12,363 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-07-20 01:05:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-20 01:05:12,363 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-20 01:05:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 01:05:12,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 01:05:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-07-20 01:05:12,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-07-20 01:05:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-20 01:05:12,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-20 01:05:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 01:05:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-20 01:05:12,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-20 01:05:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-07-20 01:05:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-07-20 01:05:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-07-20 01:05:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-07-20 01:05:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure idr_find [2022-07-20 01:05:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_find [2022-07-20 01:05:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 01:05:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-20 01:05:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-20 01:05:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-20 01:05:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-20 01:05:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 01:05:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-20 01:05:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-20 01:05:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-20 01:05:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-20 01:05:12,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-20 01:05:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-07-20 01:05:12,367 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-07-20 01:05:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-20 01:05:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-20 01:05:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-20 01:05:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure free_scq [2022-07-20 01:05:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure free_scq [2022-07-20 01:05:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2022-07-20 01:05:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2022-07-20 01:05:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2022-07-20 01:05:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2022-07-20 01:05:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_iovec_rx_bufs [2022-07-20 01:05:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_iovec_rx_bufs [2022-07-20 01:05:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-20 01:05:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-20 01:05:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure nicstar_remove_one [2022-07-20 01:05:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure nicstar_remove_one [2022-07-20 01:05:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-07-20 01:05:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-07-20 01:05:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-20 01:05:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-20 01:05:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-20 01:05:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-20 01:05:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure ns_init_card_error [2022-07-20 01:05:12,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_init_card_error [2022-07-20 01:05:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-07-20 01:05:12,372 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-07-20 01:05:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-07-20 01:05:12,372 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-07-20 01:05:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-20 01:05:12,373 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-20 01:05:12,373 INFO L130 BoogieDeclarations]: Found specification of procedure ns_write_sram [2022-07-20 01:05:12,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_write_sram [2022-07-20 01:05:12,373 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-07-20 01:05:12,373 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-07-20 01:05:12,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-20 01:05:12,373 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-20 01:05:12,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-20 01:05:12,374 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-07-20 01:05:12,374 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-07-20 01:05:12,374 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-07-20 01:05:12,374 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-07-20 01:05:12,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 01:05:12,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 01:05:12,374 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-07-20 01:05:12,375 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-07-20 01:05:13,193 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 01:05:13,196 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 01:05:16,914 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 01:06:13,225 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 01:06:13,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 01:06:13,244 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-20 01:06:13,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:13 BoogieIcfgContainer [2022-07-20 01:06:13,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 01:06:13,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 01:06:13,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 01:06:13,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 01:06:13,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:05:08" (1/3) ... [2022-07-20 01:06:13,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533d3db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:06:13, skipping insertion in model container [2022-07-20 01:06:13,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:11" (2/3) ... [2022-07-20 01:06:13,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533d3db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:06:13, skipping insertion in model container [2022-07-20 01:06:13,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:13" (3/3) ... [2022-07-20 01:06:13,256 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-20 01:06:13,269 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 01:06:13,269 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 01:06:13,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 01:06:13,409 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@52f93406, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d78f3fd [2022-07-20 01:06:13,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 01:06:13,423 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) [2022-07-20 01:06:13,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-20 01:06:13,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:06:13,445 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] [2022-07-20 01:06:13,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:06:13,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:06:13,451 INFO L85 PathProgramCache]: Analyzing trace with hash 703457863, now seen corresponding path program 1 times [2022-07-20 01:06:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:06:13,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274054790] [2022-07-20 01:06:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:06:13,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:06:13,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:06:13,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:06:13,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 01:06:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:06:14,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-20 01:06:14,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:06:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-20 01:06:14,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:06:14,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:06:14,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274054790] [2022-07-20 01:06:14,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274054790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:06:14,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:06:14,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:06:14,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123058032] [2022-07-20 01:06:14,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:06:14,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-20 01:06:14,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:06:14,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-20 01:06:14,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 01:06:14,767 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) [2022-07-20 01:06:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:06:14,987 INFO L93 Difference]: Finished difference Result 4041 states and 6043 transitions. [2022-07-20 01:06:14,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-20 01:06:14,990 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 [2022-07-20 01:06:14,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:06:15,027 INFO L225 Difference]: With dead ends: 4041 [2022-07-20 01:06:15,028 INFO L226 Difference]: Without dead ends: 1993 [2022-07-20 01:06:15,054 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 [2022-07-20 01:06:15,058 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 [2022-07-20 01:06:15,059 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] [2022-07-20 01:06:15,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2022-07-20 01:06:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1993. [2022-07-20 01:06:15,226 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) [2022-07-20 01:06:15,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2920 transitions. [2022-07-20 01:06:15,304 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2920 transitions. Word has length 149 [2022-07-20 01:06:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:06:15,305 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 2920 transitions. [2022-07-20 01:06:15,305 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) [2022-07-20 01:06:15,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2920 transitions. [2022-07-20 01:06:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-20 01:06:15,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:06:15,312 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] [2022-07-20 01:06:15,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-20 01:06:15,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:06:15,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:06:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:06:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1341829763, now seen corresponding path program 1 times [2022-07-20 01:06:15,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:06:15,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795952173] [2022-07-20 01:06:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:06:15,530 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:06:15,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:06:15,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:06:15,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 01:06:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:06:16,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 01:06:16,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:06:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-20 01:06:17,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:06:17,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:06:17,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795952173] [2022-07-20 01:06:17,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795952173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:06:17,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:06:17,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 01:06:17,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629794670] [2022-07-20 01:06:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:06:17,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 01:06:17,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:06:17,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 01:06:17,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 01:06:17,120 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) [2022-07-20 01:06:17,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:06:17,750 INFO L93 Difference]: Finished difference Result 3978 states and 5831 transitions. [2022-07-20 01:06:17,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 01:06:17,751 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 [2022-07-20 01:06:17,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:06:17,768 INFO L225 Difference]: With dead ends: 3978 [2022-07-20 01:06:17,768 INFO L226 Difference]: Without dead ends: 1994 [2022-07-20 01:06:17,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-20 01:06:17,786 INFO L413 NwaCegarLoop]: 2913 mSDtfsCounter, 6 mSDsluCounter, 11634 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-07-20 01:06:17,787 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] [2022-07-20 01:06:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-07-20 01:06:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1994. [2022-07-20 01:06:17,892 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) [2022-07-20 01:06:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 2921 transitions. [2022-07-20 01:06:17,919 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 2921 transitions. Word has length 149 [2022-07-20 01:06:17,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:06:17,923 INFO L495 AbstractCegarLoop]: Abstraction has 1994 states and 2921 transitions. [2022-07-20 01:06:17,924 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) [2022-07-20 01:06:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 2921 transitions. [2022-07-20 01:06:17,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-20 01:06:17,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:06:17,929 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] [2022-07-20 01:06:17,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 01:06:18,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:06:18,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:06:18,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:06:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash -899632067, now seen corresponding path program 1 times [2022-07-20 01:06:18,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:06:18,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227309261] [2022-07-20 01:06:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:06:18,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:06:18,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:06:18,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:06:18,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 01:06:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:06:19,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 01:06:19,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:06:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-07-20 01:06:19,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:06:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-07-20 01:06:20,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:06:20,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227309261] [2022-07-20 01:06:20,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227309261] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:06:20,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:06:20,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-20 01:06:20,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656438581] [2022-07-20 01:06:20,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:06:20,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 01:06:20,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:06:20,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 01:06:20,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-20 01:06:20,999 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) [2022-07-20 01:06:22,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:06:22,170 INFO L93 Difference]: Finished difference Result 3990 states and 5847 transitions. [2022-07-20 01:06:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 01:06:22,176 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 [2022-07-20 01:06:22,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:06:22,198 INFO L225 Difference]: With dead ends: 3990 [2022-07-20 01:06:22,198 INFO L226 Difference]: Without dead ends: 2010 [2022-07-20 01:06:22,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-20 01:06:22,215 INFO L413 NwaCegarLoop]: 2915 mSDtfsCounter, 12 mSDsluCounter, 11640 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 01:06:22,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 14555 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 01:06:22,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-07-20 01:06:22,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 2010. [2022-07-20 01:06:22,285 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) [2022-07-20 01:06:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2937 transitions. [2022-07-20 01:06:22,301 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2937 transitions. Word has length 153 [2022-07-20 01:06:22,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:06:22,303 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 2937 transitions. [2022-07-20 01:06:22,303 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) [2022-07-20 01:06:22,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2937 transitions. [2022-07-20 01:06:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-20 01:06:22,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:06:22,311 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] [2022-07-20 01:06:22,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 01:06:22,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:06:22,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:06:22,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:06:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash -437318811, now seen corresponding path program 2 times [2022-07-20 01:06:22,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:06:22,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419666424] [2022-07-20 01:06:22,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:06:22,530 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:06:22,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:06:22,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:06:22,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 01:06:23,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:06:23,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:06:23,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:06:23,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:06:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-07-20 01:06:23,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:06:23,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:06:23,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419666424] [2022-07-20 01:06:23,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419666424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:06:23,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:06:23,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:06:23,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687100271] [2022-07-20 01:06:23,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:06:23,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:06:23,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:06:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:06:23,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:06:23,628 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) [2022-07-20 01:06:23,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:06:23,986 INFO L93 Difference]: Finished difference Result 5482 states and 7998 transitions. [2022-07-20 01:06:23,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:06:23,987 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 [2022-07-20 01:06:23,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:06:24,018 INFO L225 Difference]: With dead ends: 5482 [2022-07-20 01:06:24,019 INFO L226 Difference]: Without dead ends: 3509 [2022-07-20 01:06:24,035 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 [2022-07-20 01:06:24,037 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 [2022-07-20 01:06:24,039 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] [2022-07-20 01:06:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2022-07-20 01:06:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 3505. [2022-07-20 01:06:24,192 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) [2022-07-20 01:06:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 5103 transitions. [2022-07-20 01:06:24,219 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 5103 transitions. Word has length 156 [2022-07-20 01:06:24,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:06:24,220 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 5103 transitions. [2022-07-20 01:06:24,221 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) [2022-07-20 01:06:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 5103 transitions. [2022-07-20 01:06:24,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-20 01:06:24,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:06:24,224 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] [2022-07-20 01:06:24,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 01:06:24,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:06:24,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:06:24,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:06:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1645701321, now seen corresponding path program 1 times [2022-07-20 01:06:24,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:06:24,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647600300] [2022-07-20 01:06:24,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:06:24,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:06:24,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:06:24,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:06:24,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 01:06:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:06:25,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 01:06:25,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:06:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-07-20 01:06:26,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:06:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-20 01:06:27,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:06:27,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647600300] [2022-07-20 01:06:27,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647600300] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:06:27,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:06:27,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-20 01:06:27,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564960417] [2022-07-20 01:06:27,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:06:27,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 01:06:27,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:06:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 01:06:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-20 01:06:27,722 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) [2022-07-20 01:06:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:06:29,324 INFO L93 Difference]: Finished difference Result 6993 states and 10187 transitions. [2022-07-20 01:06:29,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 01:06:29,326 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 [2022-07-20 01:06:29,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:06:29,349 INFO L225 Difference]: With dead ends: 6993 [2022-07-20 01:06:29,349 INFO L226 Difference]: Without dead ends: 3507 [2022-07-20 01:06:29,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-07-20 01:06:29,374 INFO L413 NwaCegarLoop]: 2916 mSDtfsCounter, 23 mSDsluCounter, 14556 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-07-20 01:06:29,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 17472 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-20 01:06:29,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2022-07-20 01:06:29,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3507. [2022-07-20 01:06:29,510 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) [2022-07-20 01:06:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 5105 transitions. [2022-07-20 01:06:29,534 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 5105 transitions. Word has length 163 [2022-07-20 01:06:29,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:06:29,536 INFO L495 AbstractCegarLoop]: Abstraction has 3507 states and 5105 transitions. [2022-07-20 01:06:29,537 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) [2022-07-20 01:06:29,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 5105 transitions. [2022-07-20 01:06:29,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-20 01:06:29,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:06:29,541 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] [2022-07-20 01:06:29,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 01:06:29,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:06:29,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:06:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:06:29,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1465862159, now seen corresponding path program 2 times [2022-07-20 01:06:29,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:06:29,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336020910] [2022-07-20 01:06:29,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:06:29,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:06:29,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:06:29,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:06:29,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 01:06:30,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:06:30,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:06:30,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:06:30,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:06:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-07-20 01:06:30,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:06:30,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:06:30,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336020910] [2022-07-20 01:06:30,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336020910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:06:30,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:06:30,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 01:06:30,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033614956] [2022-07-20 01:06:30,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:06:30,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:06:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:06:30,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:06:30,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:06:30,907 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) [2022-07-20 01:06:31,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:06:31,541 INFO L93 Difference]: Finished difference Result 9567 states and 13917 transitions. [2022-07-20 01:06:31,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:06:31,542 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 [2022-07-20 01:06:31,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:06:31,579 INFO L225 Difference]: With dead ends: 9567 [2022-07-20 01:06:31,579 INFO L226 Difference]: Without dead ends: 6118 [2022-07-20 01:06:31,602 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 [2022-07-20 01:06:31,603 INFO L413 NwaCegarLoop]: 3363 mSDtfsCounter, 2353 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-07-20 01:06:31,603 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] [2022-07-20 01:06:31,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2022-07-20 01:06:31,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 6111. [2022-07-20 01:06:31,840 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) [2022-07-20 01:06:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6111 states to 6111 states and 8871 transitions. [2022-07-20 01:06:31,887 INFO L78 Accepts]: Start accepts. Automaton has 6111 states and 8871 transitions. Word has length 166 [2022-07-20 01:06:31,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:06:31,887 INFO L495 AbstractCegarLoop]: Abstraction has 6111 states and 8871 transitions. [2022-07-20 01:06:31,887 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) [2022-07-20 01:06:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 6111 states and 8871 transitions. [2022-07-20 01:06:31,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-20 01:06:31,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:06:31,891 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] [2022-07-20 01:06:31,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 01:06:32,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:06:32,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:06:32,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:06:32,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1108897071, now seen corresponding path program 1 times [2022-07-20 01:06:32,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:06:32,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255599432] [2022-07-20 01:06:32,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:06:32,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:06:32,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:06:32,119 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:06:32,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 01:06:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:06:33,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 01:06:33,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:06:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 64 proven. 6 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-20 01:06:34,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:06:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-20 01:06:36,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:06:36,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255599432] [2022-07-20 01:06:36,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255599432] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:06:36,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:06:36,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-20 01:06:36,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111963920] [2022-07-20 01:06:36,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:06:36,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-20 01:06:36,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:06:36,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-20 01:06:36,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-20 01:06:36,266 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) [2022-07-20 01:06:38,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:06:38,560 INFO L93 Difference]: Finished difference Result 12208 states and 17727 transitions. [2022-07-20 01:06:38,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-20 01:06:38,561 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 [2022-07-20 01:06:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:06:38,626 INFO L225 Difference]: With dead ends: 12208 [2022-07-20 01:06:38,626 INFO L226 Difference]: Without dead ends: 6114 [2022-07-20 01:06:38,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-20 01:06:38,668 INFO L413 NwaCegarLoop]: 2916 mSDtfsCounter, 21 mSDsluCounter, 23290 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26206 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-20 01:06:38,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 26206 Invalid, 190 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-20 01:06:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6114 states. [2022-07-20 01:06:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6114 to 6114. [2022-07-20 01:06:39,076 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) [2022-07-20 01:06:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 8874 transitions. [2022-07-20 01:06:39,179 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 8874 transitions. Word has length 182 [2022-07-20 01:06:39,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:06:39,196 INFO L495 AbstractCegarLoop]: Abstraction has 6114 states and 8874 transitions. [2022-07-20 01:06:39,196 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) [2022-07-20 01:06:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 8874 transitions. [2022-07-20 01:06:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-20 01:06:39,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:06:39,200 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] [2022-07-20 01:06:39,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-20 01:06:39,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:06:39,423 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:06:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:06:39,424 INFO L85 PathProgramCache]: Analyzing trace with hash 631131437, now seen corresponding path program 1 times [2022-07-20 01:06:39,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:06:39,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941520855] [2022-07-20 01:06:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:06:39,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:06:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:06:39,428 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:06:39,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 01:06:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:06:41,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 01:06:41,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:06:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 131 proven. 10 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-20 01:06:41,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:06:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 47 proven. 41 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-07-20 01:06:44,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:06:44,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941520855] [2022-07-20 01:06:44,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941520855] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:06:44,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:06:44,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-20 01:06:44,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605977069] [2022-07-20 01:06:44,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:06:44,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-20 01:06:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:06:44,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-20 01:06:44,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-20 01:06:44,038 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) [2022-07-20 01:06:46,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:06:46,215 INFO L93 Difference]: Finished difference Result 12220 states and 17741 transitions. [2022-07-20 01:06:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-20 01:06:46,217 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 [2022-07-20 01:06:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:06:46,353 INFO L225 Difference]: With dead ends: 12220 [2022-07-20 01:06:46,367 INFO L226 Difference]: Without dead ends: 6125 [2022-07-20 01:06:46,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-07-20 01:06:46,439 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, 1.3s IncrementalHoareTripleChecker+Time [2022-07-20 01:06:46,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 26199 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-20 01:06:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6125 states. [2022-07-20 01:06:46,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6125 to 6125. [2022-07-20 01:06:46,774 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) [2022-07-20 01:06:46,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6125 states to 6125 states and 8886 transitions. [2022-07-20 01:06:46,815 INFO L78 Accepts]: Start accepts. Automaton has 6125 states and 8886 transitions. Word has length 188 [2022-07-20 01:06:46,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:06:46,816 INFO L495 AbstractCegarLoop]: Abstraction has 6125 states and 8886 transitions. [2022-07-20 01:06:46,816 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) [2022-07-20 01:06:46,816 INFO L276 IsEmpty]: Start isEmpty. Operand 6125 states and 8886 transitions. [2022-07-20 01:06:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-20 01:06:46,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:06:46,820 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] [2022-07-20 01:06:46,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-20 01:06:47,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:06:47,035 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:06:47,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:06:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash 141595824, now seen corresponding path program 1 times [2022-07-20 01:06:47,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:06:47,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338064700] [2022-07-20 01:06:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:06:47,038 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:06:47,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:06:47,039 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:06:47,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 01:06:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:06:48,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 01:06:48,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:06:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 156 proven. 15 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-20 01:06:49,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:06:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 54 proven. 57 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-20 01:06:52,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:06:52,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338064700] [2022-07-20 01:06:52,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338064700] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:06:52,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:06:52,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-20 01:06:52,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709131338] [2022-07-20 01:06:52,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:06:52,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-20 01:06:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:06:52,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-20 01:06:52,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-07-20 01:06:52,145 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) [2022-07-20 01:06:54,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:06:54,462 INFO L93 Difference]: Finished difference Result 12215 states and 17732 transitions. [2022-07-20 01:06:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-20 01:06:54,463 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 [2022-07-20 01:06:54,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:06:54,497 INFO L225 Difference]: With dead ends: 12215 [2022-07-20 01:06:54,497 INFO L226 Difference]: Without dead ends: 6128 [2022-07-20 01:06:54,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-07-20 01:06:54,523 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 43 mSDsluCounter, 26193 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-07-20 01:06:54,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 29107 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-20 01:06:54,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6128 states. [2022-07-20 01:06:54,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6128 to 6128. [2022-07-20 01:06:54,772 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) [2022-07-20 01:06:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6128 states to 6128 states and 8889 transitions. [2022-07-20 01:06:54,808 INFO L78 Accepts]: Start accepts. Automaton has 6128 states and 8889 transitions. Word has length 189 [2022-07-20 01:06:54,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:06:54,809 INFO L495 AbstractCegarLoop]: Abstraction has 6128 states and 8889 transitions. [2022-07-20 01:06:54,810 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) [2022-07-20 01:06:54,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6128 states and 8889 transitions. [2022-07-20 01:06:54,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-20 01:06:54,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:06:54,813 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] [2022-07-20 01:06:54,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 01:06:55,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:06:55,036 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:06:55,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:06:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1302833676, now seen corresponding path program 2 times [2022-07-20 01:06:55,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:06:55,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421892020] [2022-07-20 01:06:55,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:06:55,038 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:06:55,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:06:55,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:06:55,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 01:06:55,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:06:55,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:06:55,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:06:55,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:06:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-07-20 01:06:57,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:06:57,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:06:57,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421892020] [2022-07-20 01:06:57,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421892020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:06:57,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:06:57,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 01:06:57,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279211996] [2022-07-20 01:06:57,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:06:57,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:06:57,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:06:57,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:06:57,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:06:57,660 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) [2022-07-20 01:06:58,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:06:58,339 INFO L93 Difference]: Finished difference Result 18288 states and 26689 transitions. [2022-07-20 01:06:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 01:06:58,340 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 [2022-07-20 01:06:58,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:06:58,404 INFO L225 Difference]: With dead ends: 18288 [2022-07-20 01:06:58,405 INFO L226 Difference]: Without dead ends: 12229 [2022-07-20 01:06:58,438 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 [2022-07-20 01:06:58,439 INFO L413 NwaCegarLoop]: 4071 mSDtfsCounter, 2890 mSDsluCounter, 11009 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 01:06:58,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 15080 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 01:06:58,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12229 states. [2022-07-20 01:06:58,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12229 to 12214. [2022-07-20 01:06:58,909 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) [2022-07-20 01:06:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12214 states to 12214 states and 17784 transitions. [2022-07-20 01:06:58,978 INFO L78 Accepts]: Start accepts. Automaton has 12214 states and 17784 transitions. Word has length 191 [2022-07-20 01:06:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:06:58,979 INFO L495 AbstractCegarLoop]: Abstraction has 12214 states and 17784 transitions. [2022-07-20 01:06:58,979 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) [2022-07-20 01:06:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 12214 states and 17784 transitions. [2022-07-20 01:06:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-20 01:06:58,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:06:58,983 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] [2022-07-20 01:06:59,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 01:06:59,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:06:59,196 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:06:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:06:59,197 INFO L85 PathProgramCache]: Analyzing trace with hash -261359955, now seen corresponding path program 2 times [2022-07-20 01:06:59,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:06:59,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159430689] [2022-07-20 01:06:59,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:06:59,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:06:59,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:06:59,201 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:06:59,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-20 01:07:00,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:07:00,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:07:00,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:07:00,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:07:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-07-20 01:07:01,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:07:01,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:07:01,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159430689] [2022-07-20 01:07:01,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159430689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:07:01,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:07:01,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 01:07:01,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747433578] [2022-07-20 01:07:01,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:07:01,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:07:01,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:07:01,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:07:01,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:07:01,913 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) [2022-07-20 01:07:02,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:07:02,728 INFO L93 Difference]: Finished difference Result 36568 states and 53502 transitions. [2022-07-20 01:07:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 01:07:02,729 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 [2022-07-20 01:07:02,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:07:02,890 INFO L225 Difference]: With dead ends: 36568 [2022-07-20 01:07:02,891 INFO L226 Difference]: Without dead ends: 24423 [2022-07-20 01:07:03,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-20 01:07:03,141 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 [2022-07-20 01:07:03,141 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] [2022-07-20 01:07:03,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24423 states. [2022-07-20 01:07:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24423 to 24396. [2022-07-20 01:07:03,938 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) [2022-07-20 01:07:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24396 states to 24396 states and 35615 transitions. [2022-07-20 01:07:04,256 INFO L78 Accepts]: Start accepts. Automaton has 24396 states and 35615 transitions. Word has length 192 [2022-07-20 01:07:04,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:07:04,259 INFO L495 AbstractCegarLoop]: Abstraction has 24396 states and 35615 transitions. [2022-07-20 01:07:04,259 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) [2022-07-20 01:07:04,259 INFO L276 IsEmpty]: Start isEmpty. Operand 24396 states and 35615 transitions. [2022-07-20 01:07:04,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-20 01:07:04,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:07:04,262 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] [2022-07-20 01:07:04,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-20 01:07:04,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:07:04,484 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:07:04,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:07:04,484 INFO L85 PathProgramCache]: Analyzing trace with hash 304099754, now seen corresponding path program 1 times [2022-07-20 01:07:04,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:07:04,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243655518] [2022-07-20 01:07:04,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:07:04,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:07:04,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:07:04,487 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:07:04,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-20 01:07:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:07:06,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-20 01:07:06,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:07:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 183 proven. 21 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-07-20 01:07:06,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:07:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 61 proven. 76 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-07-20 01:07:10,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:07:10,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243655518] [2022-07-20 01:07:10,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243655518] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:07:10,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:07:10,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-20 01:07:10,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423923385] [2022-07-20 01:07:10,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:07:10,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-20 01:07:10,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:07:10,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-20 01:07:10,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-20 01:07:10,112 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) [2022-07-20 01:07:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:07:13,423 INFO L93 Difference]: Finished difference Result 48775 states and 71214 transitions. [2022-07-20 01:07:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-20 01:07:13,425 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 [2022-07-20 01:07:13,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:07:13,585 INFO L225 Difference]: With dead ends: 48775 [2022-07-20 01:07:13,585 INFO L226 Difference]: Without dead ends: 24405 [2022-07-20 01:07:13,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2022-07-20 01:07:13,723 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 43 mSDsluCounter, 37832 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.9s IncrementalHoareTripleChecker+Time [2022-07-20 01:07:13,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 40746 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-20 01:07:13,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24405 states. [2022-07-20 01:07:14,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24405 to 24405. [2022-07-20 01:07:14,663 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) [2022-07-20 01:07:14,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24405 states to 24405 states and 35624 transitions. [2022-07-20 01:07:14,817 INFO L78 Accepts]: Start accepts. Automaton has 24405 states and 35624 transitions. Word has length 190 [2022-07-20 01:07:14,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:07:14,819 INFO L495 AbstractCegarLoop]: Abstraction has 24405 states and 35624 transitions. [2022-07-20 01:07:14,819 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) [2022-07-20 01:07:14,819 INFO L276 IsEmpty]: Start isEmpty. Operand 24405 states and 35624 transitions. [2022-07-20 01:07:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-20 01:07:14,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:07:14,822 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] [2022-07-20 01:07:14,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-20 01:07:15,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:07:15,044 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:07:15,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:07:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash -35486458, now seen corresponding path program 2 times [2022-07-20 01:07:15,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:07:15,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901322683] [2022-07-20 01:07:15,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:07:15,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:07:15,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:07:15,048 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:07:15,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-20 01:07:16,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:07:16,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:07:16,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:07:16,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:07:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-20 01:07:18,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:07:18,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:07:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901322683] [2022-07-20 01:07:18,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901322683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:07:18,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:07:18,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 01:07:18,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338016213] [2022-07-20 01:07:18,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:07:18,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:07:18,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:07:18,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:07:18,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:07:18,298 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) [2022-07-20 01:07:20,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:07:20,133 INFO L93 Difference]: Finished difference Result 73191 states and 107286 transitions. [2022-07-20 01:07:20,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 01:07:20,134 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 [2022-07-20 01:07:20,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:07:20,519 INFO L225 Difference]: With dead ends: 73191 [2022-07-20 01:07:20,519 INFO L226 Difference]: Without dead ends: 48856 [2022-07-20 01:07:20,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-20 01:07:20,728 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 [2022-07-20 01:07:20,728 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] [2022-07-20 01:07:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48856 states. [2022-07-20 01:07:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48856 to 48805. [2022-07-20 01:07:22,615 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) [2022-07-20 01:07:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48805 states to 48805 states and 71384 transitions. [2022-07-20 01:07:23,284 INFO L78 Accepts]: Start accepts. Automaton has 48805 states and 71384 transitions. Word has length 192 [2022-07-20 01:07:23,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:07:23,285 INFO L495 AbstractCegarLoop]: Abstraction has 48805 states and 71384 transitions. [2022-07-20 01:07:23,285 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) [2022-07-20 01:07:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 48805 states and 71384 transitions. [2022-07-20 01:07:23,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-20 01:07:23,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:07:23,289 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] [2022-07-20 01:07:23,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-20 01:07:23,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:07:23,511 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:07:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:07:23,512 INFO L85 PathProgramCache]: Analyzing trace with hash 597209677, now seen corresponding path program 2 times [2022-07-20 01:07:23,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:07:23,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130391482] [2022-07-20 01:07:23,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:07:23,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:07:23,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:07:23,516 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:07:23,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-20 01:07:24,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:07:24,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:07:24,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 01:07:24,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:07:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-20 01:07:26,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:07:26,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:07:26,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130391482] [2022-07-20 01:07:26,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130391482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:07:26,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:07:26,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 01:07:26,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843954506] [2022-07-20 01:07:26,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:07:26,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 01:07:26,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:07:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 01:07:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 01:07:26,491 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) [2022-07-20 01:07:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:07:29,592 INFO L93 Difference]: Finished difference Result 145775 states and 213997 transitions. [2022-07-20 01:07:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 01:07:29,592 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 [2022-07-20 01:07:29,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:07:30,500 INFO L225 Difference]: With dead ends: 145775 [2022-07-20 01:07:30,501 INFO L226 Difference]: Without dead ends: 97040 [2022-07-20 01:07:30,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-20 01:07:30,771 INFO L413 NwaCegarLoop]: 4844 mSDtfsCounter, 2890 mSDsluCounter, 12554 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-07-20 01:07:30,771 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] [2022-07-20 01:07:30,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97040 states. [2022-07-20 01:07:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97040 to 96531. [2022-07-20 01:07:34,022 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) [2022-07-20 01:07:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96531 states to 96531 states and 141589 transitions. [2022-07-20 01:07:34,897 INFO L78 Accepts]: Start accepts. Automaton has 96531 states and 141589 transitions. Word has length 191 [2022-07-20 01:07:34,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:07:34,897 INFO L495 AbstractCegarLoop]: Abstraction has 96531 states and 141589 transitions. [2022-07-20 01:07:34,898 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) [2022-07-20 01:07:34,898 INFO L276 IsEmpty]: Start isEmpty. Operand 96531 states and 141589 transitions. [2022-07-20 01:07:34,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-20 01:07:34,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:07:34,901 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] [2022-07-20 01:07:34,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-07-20 01:07:35,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:07:35,124 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:07:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:07:35,124 INFO L85 PathProgramCache]: Analyzing trace with hash -132391511, now seen corresponding path program 1 times [2022-07-20 01:07:35,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:07:35,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590375002] [2022-07-20 01:07:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:07:35,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:07:35,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:07:35,127 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:07:35,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-20 01:07:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:07:37,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-20 01:07:37,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:07:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 282 proven. 28 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-07-20 01:07:38,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:07:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 68 proven. 98 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-07-20 01:07:42,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:07:42,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590375002] [2022-07-20 01:07:42,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590375002] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 01:07:42,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 01:07:42,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-07-20 01:07:42,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176092159] [2022-07-20 01:07:42,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 01:07:42,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-20 01:07:42,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:07:42,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-20 01:07:42,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-07-20 01:07:42,224 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) [2022-07-20 01:07:47,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:07:47,812 INFO L93 Difference]: Finished difference Result 193117 states and 283258 transitions. [2022-07-20 01:07:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-20 01:07:47,813 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 [2022-07-20 01:07:47,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:07:48,563 INFO L225 Difference]: With dead ends: 193117 [2022-07-20 01:07:48,563 INFO L226 Difference]: Without dead ends: 96564 [2022-07-20 01:07:48,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2022-07-20 01:07:48,946 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 56 mSDsluCounter, 32019 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-07-20 01:07:48,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 34933 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-20 01:07:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96564 states. [2022-07-20 01:07:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96564 to 96564. [2022-07-20 01:07:51,829 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) [2022-07-20 01:07:52,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96564 states to 96564 states and 141622 transitions. [2022-07-20 01:07:52,406 INFO L78 Accepts]: Start accepts. Automaton has 96564 states and 141622 transitions. Word has length 200 [2022-07-20 01:07:52,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:07:52,407 INFO L495 AbstractCegarLoop]: Abstraction has 96564 states and 141622 transitions. [2022-07-20 01:07:52,407 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) [2022-07-20 01:07:52,407 INFO L276 IsEmpty]: Start isEmpty. Operand 96564 states and 141622 transitions. [2022-07-20 01:07:52,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-20 01:07:52,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:07:52,410 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] [2022-07-20 01:07:52,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-07-20 01:07:52,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:07:52,631 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:07:52,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:07:52,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1489063885, now seen corresponding path program 2 times [2022-07-20 01:07:52,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:07:52,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089592693] [2022-07-20 01:07:52,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 01:07:52,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:07:52,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:07:52,634 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:07:52,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-20 01:07:53,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 01:07:53,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 01:07:53,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 01:07:53,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:07:55,615 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2022-07-20 01:07:55,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 01:07:55,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:07:55,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089592693] [2022-07-20 01:07:55,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089592693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:07:55,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:07:55,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 01:07:55,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328992444] [2022-07-20 01:07:55,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:07:55,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 01:07:55,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:07:55,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 01:07:55,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 01:07:55,617 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) [2022-07-20 01:07:58,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:07:58,999 INFO L93 Difference]: Finished difference Result 150201 states and 220956 transitions. [2022-07-20 01:07:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 01:07:59,000 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 [2022-07-20 01:07:59,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:08:00,137 INFO L225 Difference]: With dead ends: 150201 [2022-07-20 01:08:00,138 INFO L226 Difference]: Without dead ends: 150198 [2022-07-20 01:08:00,223 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 [2022-07-20 01:08:00,224 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 [2022-07-20 01:08:00,224 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] [2022-07-20 01:08:00,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150198 states. [2022-07-20 01:08:04,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150198 to 149018. [2022-07-20 01:08:04,993 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) [2022-07-20 01:08:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149018 states to 149018 states and 218908 transitions. [2022-07-20 01:08:06,885 INFO L78 Accepts]: Start accepts. Automaton has 149018 states and 218908 transitions. Word has length 202 [2022-07-20 01:08:06,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:08:06,886 INFO L495 AbstractCegarLoop]: Abstraction has 149018 states and 218908 transitions. [2022-07-20 01:08:06,887 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) [2022-07-20 01:08:06,887 INFO L276 IsEmpty]: Start isEmpty. Operand 149018 states and 218908 transitions. [2022-07-20 01:08:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-20 01:08:06,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:08:06,893 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] [2022-07-20 01:08:06,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-07-20 01:08:07,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 01:08:07,116 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:08:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:08:07,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1630107578, now seen corresponding path program 1 times [2022-07-20 01:08:07,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 01:08:07,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015570893] [2022-07-20 01:08:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:08:07,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 01:08:07,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 01:08:07,120 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 01:08:07,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-20 01:08:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:08:09,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 01:08:09,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 01:08:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2022-07-20 01:08:11,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 01:08:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2022-07-20 01:08:12,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 01:08:12,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015570893] [2022-07-20 01:08:12,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015570893] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 01:08:12,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 01:08:12,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2022-07-20 01:08:12,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122477868] [2022-07-20 01:08:12,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:08:12,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 01:08:12,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 01:08:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 01:08:12,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-20 01:08:12,274 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)