./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0874.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0874.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 8c405523cac8e5f9cc9432e526f7ec96d6e0134414c1ccc7da7da81ae6ee7579 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 14:20:27,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 14:20:27,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 14:20:27,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 14:20:27,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 14:20:27,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 14:20:27,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 14:20:27,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 14:20:27,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 14:20:27,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 14:20:27,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 14:20:27,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 14:20:27,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 14:20:27,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 14:20:27,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 14:20:27,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 14:20:27,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 14:20:27,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 14:20:27,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 14:20:27,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 14:20:27,812 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 14:20:27,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 14:20:27,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 14:20:27,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 14:20:27,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 14:20:27,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 14:20:27,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 14:20:27,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 14:20:27,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 14:20:27,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 14:20:27,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 14:20:27,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 14:20:27,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 14:20:27,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 14:20:27,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 14:20:27,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 14:20:27,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 14:20:27,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 14:20:27,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 14:20:27,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 14:20:27,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 14:20:27,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 14:20:27,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 14:20:27,855 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 14:20:27,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 14:20:27,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 14:20:27,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 14:20:27,857 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 14:20:27,857 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 14:20:27,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 14:20:27,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 14:20:27,858 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 14:20:27,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 14:20:27,859 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 14:20:27,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 14:20:27,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 14:20:27,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 14:20:27,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 14:20:27,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 14:20:27,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 14:20:27,860 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 14:20:27,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 14:20:27,861 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 14:20:27,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 14:20:27,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 14:20:27,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 14:20:27,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 14:20:27,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:20:27,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 14:20:27,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 14:20:27,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 14:20:27,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 14:20:27,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 14:20:27,862 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 14:20:27,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 14:20:27,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 14:20:27,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c405523cac8e5f9cc9432e526f7ec96d6e0134414c1ccc7da7da81ae6ee7579 [2022-07-22 14:20:28,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 14:20:28,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 14:20:28,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 14:20:28,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 14:20:28,075 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 14:20:28,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0874.c [2022-07-22 14:20:28,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/513898e0a/f369f11395a84b2eb286aca1b25fd726/FLAG0f4f66447 [2022-07-22 14:20:28,507 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 14:20:28,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0874.c [2022-07-22 14:20:28,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/513898e0a/f369f11395a84b2eb286aca1b25fd726/FLAG0f4f66447 [2022-07-22 14:20:28,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/513898e0a/f369f11395a84b2eb286aca1b25fd726 [2022-07-22 14:20:28,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 14:20:28,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 14:20:28,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 14:20:28,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 14:20:28,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 14:20:28,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:20:28" (1/1) ... [2022-07-22 14:20:28,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef3aa30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:28, skipping insertion in model container [2022-07-22 14:20:28,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:20:28" (1/1) ... [2022-07-22 14:20:28,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 14:20:28,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 14:20:29,126 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:837) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleNaNOrInfinity(StandardFunctionHandler.java:1784) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.lambda$49(StandardFunctionHandler.java:414) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:235) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1447) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2039) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1650) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) 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.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) 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.PRDispatcher.dispatch(PRDispatcher.java:232) 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.PRDispatcher.dispatch(PRDispatcher.java:155) 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.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) 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) [2022-07-22 14:20:29,130 INFO L158 Benchmark]: Toolchain (without parser) took 227.12ms. Allocated memory was 104.9MB in the beginning and 167.8MB in the end (delta: 62.9MB). Free memory was 75.2MB in the beginning and 142.3MB in the end (delta: -67.2MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2022-07-22 14:20:29,131 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 61.2MB in the beginning and 61.2MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:20:29,131 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.61ms. Allocated memory was 104.9MB in the beginning and 167.8MB in the end (delta: 62.9MB). Free memory was 75.2MB in the beginning and 142.3MB in the end (delta: -67.2MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2022-07-22 14:20:29,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 61.2MB in the beginning and 61.2MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.61ms. Allocated memory was 104.9MB in the beginning and 167.8MB in the end (delta: 62.9MB). Free memory was 75.2MB in the beginning and 142.3MB in the end (delta: -67.2MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:837) 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/float-newlib/double_req_bl_0874.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 8c405523cac8e5f9cc9432e526f7ec96d6e0134414c1ccc7da7da81ae6ee7579 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 14:20:30,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 14:20:30,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 14:20:30,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 14:20:30,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 14:20:30,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 14:20:30,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 14:20:30,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 14:20:30,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 14:20:30,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 14:20:30,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 14:20:30,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 14:20:30,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 14:20:30,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 14:20:30,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 14:20:30,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 14:20:30,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 14:20:30,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 14:20:30,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 14:20:30,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 14:20:30,637 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 14:20:30,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 14:20:30,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 14:20:30,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 14:20:30,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 14:20:30,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 14:20:30,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 14:20:30,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 14:20:30,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 14:20:30,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 14:20:30,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 14:20:30,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 14:20:30,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 14:20:30,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 14:20:30,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 14:20:30,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 14:20:30,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 14:20:30,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 14:20:30,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 14:20:30,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 14:20:30,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 14:20:30,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 14:20:30,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 14:20:30,664 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 14:20:30,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 14:20:30,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 14:20:30,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 14:20:30,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 14:20:30,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 14:20:30,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 14:20:30,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 14:20:30,666 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 14:20:30,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 14:20:30,667 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 14:20:30,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 14:20:30,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 14:20:30,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 14:20:30,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 14:20:30,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 14:20:30,668 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 14:20:30,668 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 14:20:30,668 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 14:20:30,668 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 14:20:30,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 14:20:30,668 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 14:20:30,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 14:20:30,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 14:20:30,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 14:20:30,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 14:20:30,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:20:30,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 14:20:30,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 14:20:30,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 14:20:30,670 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 14:20:30,670 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 14:20:30,670 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 14:20:30,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 14:20:30,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 14:20:30,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 14:20:30,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c405523cac8e5f9cc9432e526f7ec96d6e0134414c1ccc7da7da81ae6ee7579 [2022-07-22 14:20:30,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 14:20:30,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 14:20:30,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 14:20:30,962 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 14:20:30,963 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 14:20:30,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0874.c [2022-07-22 14:20:31,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724e72469/6a1122ade52b4fd59fed67147fe92a43/FLAGcb009f1a8 [2022-07-22 14:20:31,367 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 14:20:31,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0874.c [2022-07-22 14:20:31,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724e72469/6a1122ade52b4fd59fed67147fe92a43/FLAGcb009f1a8 [2022-07-22 14:20:31,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724e72469/6a1122ade52b4fd59fed67147fe92a43 [2022-07-22 14:20:31,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 14:20:31,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 14:20:31,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 14:20:31,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 14:20:31,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 14:20:31,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:20:31" (1/1) ... [2022-07-22 14:20:31,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342a7a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:31, skipping insertion in model container [2022-07-22 14:20:31,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:20:31" (1/1) ... [2022-07-22 14:20:31,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 14:20:31,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 14:20:32,054 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/float-newlib/double_req_bl_0874.c[14411,14424] [2022-07-22 14:20:32,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:20:32,063 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 14:20:32,110 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/float-newlib/double_req_bl_0874.c[14411,14424] [2022-07-22 14:20:32,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:20:32,125 INFO L208 MainTranslator]: Completed translation [2022-07-22 14:20:32,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:32 WrapperNode [2022-07-22 14:20:32,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 14:20:32,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 14:20:32,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 14:20:32,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 14:20:32,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:32" (1/1) ... [2022-07-22 14:20:32,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:32" (1/1) ... [2022-07-22 14:20:32,194 INFO L137 Inliner]: procedures = 25, calls = 165, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 757 [2022-07-22 14:20:32,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 14:20:32,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 14:20:32,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 14:20:32,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 14:20:32,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:32" (1/1) ... [2022-07-22 14:20:32,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:32" (1/1) ... [2022-07-22 14:20:32,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:32" (1/1) ... [2022-07-22 14:20:32,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:32" (1/1) ... [2022-07-22 14:20:32,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:32" (1/1) ... [2022-07-22 14:20:32,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:32" (1/1) ... [2022-07-22 14:20:32,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:32" (1/1) ... [2022-07-22 14:20:32,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 14:20:32,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 14:20:32,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 14:20:32,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 14:20:32,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:32" (1/1) ... [2022-07-22 14:20:32,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:20:32,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:20:32,307 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) [2022-07-22 14:20:32,314 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 [2022-07-22 14:20:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 14:20:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-07-22 14:20:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_double [2022-07-22 14:20:32,341 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_double [2022-07-22 14:20:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-07-22 14:20:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 14:20:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 14:20:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-07-22 14:20:32,342 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-07-22 14:20:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2022-07-22 14:20:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-22 14:20:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 14:20:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 14:20:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-22 14:20:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 14:20:32,478 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 14:20:32,479 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 14:21:28,653 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 14:21:28,660 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 14:21:28,660 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2022-07-22 14:21:28,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:21:28 BoogieIcfgContainer [2022-07-22 14:21:28,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 14:21:28,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 14:21:28,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 14:21:28,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 14:21:28,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:20:31" (1/3) ... [2022-07-22 14:21:28,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6739a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:21:28, skipping insertion in model container [2022-07-22 14:21:28,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:32" (2/3) ... [2022-07-22 14:21:28,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6739a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:21:28, skipping insertion in model container [2022-07-22 14:21:28,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:21:28" (3/3) ... [2022-07-22 14:21:28,667 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0874.c [2022-07-22 14:21:28,680 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 14:21:28,680 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 14:21:28,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 14:21:28,723 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@5af221a1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4eccc6fa [2022-07-22 14:21:28,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 14:21:28,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 203 states have (on average 1.6995073891625616) internal successors, (345), 204 states have internal predecessors, (345), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:21:28,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-22 14:21:28,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:21:28,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:21:28,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:21:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:21:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1061139955, now seen corresponding path program 1 times [2022-07-22 14:21:28,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:21:28,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864620676] [2022-07-22 14:21:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:21:28,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:21:28,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:21:28,747 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) [2022-07-22 14:21:28,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 14:21:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:21:28,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 14:21:28,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:21:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:21:28,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:21:28,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:21:28,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864620676] [2022-07-22 14:21:28,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864620676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:21:28,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:21:28,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 14:21:28,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150639213] [2022-07-22 14:21:28,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:21:28,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 14:21:28,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:21:28,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 14:21:28,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 14:21:28,990 INFO L87 Difference]: Start difference. First operand has 212 states, 203 states have (on average 1.6995073891625616) internal successors, (345), 204 states have internal predecessors, (345), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:21:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:21:29,018 INFO L93 Difference]: Finished difference Result 421 states and 711 transitions. [2022-07-22 14:21:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 14:21:29,020 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-07-22 14:21:29,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:21:29,033 INFO L225 Difference]: With dead ends: 421 [2022-07-22 14:21:29,033 INFO L226 Difference]: Without dead ends: 208 [2022-07-22 14:21:29,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 14:21:29,043 INFO L413 NwaCegarLoop]: 294 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, 294 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 [2022-07-22 14:21:29,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:21:29,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-22 14:21:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-22 14:21:29,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 200 states have (on average 1.395) internal successors, (279), 200 states have internal predecessors, (279), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:21:29,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2022-07-22 14:21:29,102 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 20 [2022-07-22 14:21:29,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:21:29,102 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2022-07-22 14:21:29,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:21:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2022-07-22 14:21:29,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-22 14:21:29,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:21:29,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:21:29,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-22 14:21:29,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:21:29,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:21:29,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:21:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1299029151, now seen corresponding path program 1 times [2022-07-22 14:21:29,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:21:29,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868914315] [2022-07-22 14:21:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:21:29,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:21:29,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:21:29,323 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) [2022-07-22 14:21:29,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 14:21:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:21:29,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 14:21:29,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:21:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:21:31,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:21:31,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:21:31,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868914315] [2022-07-22 14:21:31,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868914315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:21:31,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:21:31,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 14:21:31,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552782147] [2022-07-22 14:21:31,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:21:31,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 14:21:31,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:21:31,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 14:21:31,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:21:31,630 INFO L87 Difference]: Start difference. First operand 208 states and 289 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:21:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:21:31,653 INFO L93 Difference]: Finished difference Result 216 states and 296 transitions. [2022-07-22 14:21:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 14:21:31,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-07-22 14:21:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:21:31,655 INFO L225 Difference]: With dead ends: 216 [2022-07-22 14:21:31,655 INFO L226 Difference]: Without dead ends: 208 [2022-07-22 14:21:31,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:21:31,656 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 0 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:21:31,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1374 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 45 Unchecked, 0.0s Time] [2022-07-22 14:21:31,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-22 14:21:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-22 14:21:31,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 200 states have (on average 1.39) internal successors, (278), 200 states have internal predecessors, (278), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:21:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 288 transitions. [2022-07-22 14:21:31,664 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 288 transitions. Word has length 25 [2022-07-22 14:21:31,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:21:31,665 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 288 transitions. [2022-07-22 14:21:31,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:21:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 288 transitions. [2022-07-22 14:21:31,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-22 14:21:31,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:21:31,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:21:31,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-22 14:21:31,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:21:31,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:21:31,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:21:31,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1796740572, now seen corresponding path program 1 times [2022-07-22 14:21:31,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:21:31,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069528858] [2022-07-22 14:21:31,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:21:31,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:21:31,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:21:31,882 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) [2022-07-22 14:21:31,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-22 14:21:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:21:32,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 14:21:32,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:21:33,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-22 14:21:37,807 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:21:37,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 24 [2022-07-22 14:21:40,098 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_72| (_ BitVec 64)) (|v_skolemized_q#valueAsBitvector_71| (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (fp.lt (let ((.cse0 (concat (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_71|)) v_arrayElimCell_1))) (fp ((_ extract 63 63) .cse0) ((_ extract 62 52) .cse0) ((_ extract 51 0) .cse0))) ((_ to_fp 11 53) currentRoundingMode 1.0)) (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_72|) |c_ULTIMATE.start___ieee754_pow_~hx~2#1|) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_71|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_71|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_71|)) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_72|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_72|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_72|))))) is different from true [2022-07-22 14:21:43,141 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_72| (_ BitVec 64)) (|v_skolemized_q#valueAsBitvector_71| (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (fp.lt (let ((.cse0 (concat (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_71|)) v_arrayElimCell_1))) (fp ((_ extract 63 63) .cse0) ((_ extract 62 52) .cse0) ((_ extract 51 0) .cse0))) ((_ to_fp 11 53) currentRoundingMode 1.0)) (= (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_72|)) |c_ULTIMATE.start___ieee754_pow_~ix~0#1|) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_71|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_71|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_71|)) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_72|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_72|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_72|))))) is different from true [2022-07-22 14:21:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:21:43,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:21:43,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:21:43,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069528858] [2022-07-22 14:21:43,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069528858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:21:43,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:21:43,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 14:21:43,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067042492] [2022-07-22 14:21:43,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:21:43,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 14:21:43,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:21:43,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 14:21:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=45, Unknown=2, NotChecked=26, Total=90 [2022-07-22 14:21:43,630 INFO L87 Difference]: Start difference. First operand 208 states and 288 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:21:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:21:44,643 INFO L93 Difference]: Finished difference Result 216 states and 295 transitions. [2022-07-22 14:21:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 14:21:44,644 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-07-22 14:21:44,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:21:44,649 INFO L225 Difference]: With dead ends: 216 [2022-07-22 14:21:44,649 INFO L226 Difference]: Without dead ends: 208 [2022-07-22 14:21:44,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=21, Invalid=57, Unknown=2, NotChecked=30, Total=110 [2022-07-22 14:21:44,653 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 2 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 721 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 14:21:44,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1768 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 721 Unchecked, 0.2s Time] [2022-07-22 14:21:44,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-22 14:21:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-22 14:21:44,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 200 states have (on average 1.385) internal successors, (277), 200 states have internal predecessors, (277), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:21:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 287 transitions. [2022-07-22 14:21:44,669 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 287 transitions. Word has length 27 [2022-07-22 14:21:44,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:21:44,670 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 287 transitions. [2022-07-22 14:21:44,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:21:44,670 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 287 transitions. [2022-07-22 14:21:44,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-22 14:21:44,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:21:44,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:21:44,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-22 14:21:44,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:21:44,880 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:21:44,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:21:44,880 INFO L85 PathProgramCache]: Analyzing trace with hash 987393946, now seen corresponding path program 1 times [2022-07-22 14:21:44,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:21:44,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99136248] [2022-07-22 14:21:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:21:44,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:21:44,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:21:44,882 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) [2022-07-22 14:21:44,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-22 14:21:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:21:45,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-22 14:21:45,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:21:46,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-22 14:21:52,635 INFO L356 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-07-22 14:21:52,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 61 [2022-07-22 14:21:57,155 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:21:57,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 34 [2022-07-22 14:22:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:22:01,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:22:01,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:22:01,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99136248] [2022-07-22 14:22:01,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99136248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:22:01,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:22:01,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 14:22:01,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511858267] [2022-07-22 14:22:01,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:22:01,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 14:22:01,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:22:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 14:22:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-22 14:22:01,022 INFO L87 Difference]: Start difference. First operand 208 states and 287 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:22:04,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:05,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:07,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:09,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:12,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:14,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:17,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:19,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:20,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:23,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:25,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:29,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:31,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:33,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:34,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:36,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:39,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:43,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:46,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:49,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:51,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:53,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:55,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:22:57,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:23:00,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 14:23:02,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 14:23:06,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:23:08,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:23:10,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:23:12,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:23:14,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:23:16,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:23:18,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:23:20,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:23:22,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:23:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:23:22,916 INFO L93 Difference]: Finished difference Result 216 states and 294 transitions. [2022-07-22 14:23:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 14:23:22,959 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-07-22 14:23:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:23:22,960 INFO L225 Difference]: With dead ends: 216 [2022-07-22 14:23:22,960 INFO L226 Difference]: Without dead ends: 207 [2022-07-22 14:23:22,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 14:23:22,961 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 2 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2455 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 81.1s IncrementalHoareTripleChecker+Time [2022-07-22 14:23:22,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2455 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 25 Unknown, 247 Unchecked, 81.1s Time] [2022-07-22 14:23:22,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-22 14:23:22,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-07-22 14:23:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 199 states have (on average 1.3819095477386936) internal successors, (275), 199 states have internal predecessors, (275), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:23:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 285 transitions. [2022-07-22 14:23:22,969 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 285 transitions. Word has length 27 [2022-07-22 14:23:22,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:23:22,969 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 285 transitions. [2022-07-22 14:23:22,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:23:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 285 transitions. [2022-07-22 14:23:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 14:23:22,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:23:22,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:23:22,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-22 14:23:23,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:23:23,172 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:23:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:23:23,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1232482242, now seen corresponding path program 1 times [2022-07-22 14:23:23,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:23:23,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394429309] [2022-07-22 14:23:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:23:23,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:23:23,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:23:23,174 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) [2022-07-22 14:23:23,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-22 14:23:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:23:23,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 14:23:23,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:23:24,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-22 14:23:29,322 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:23:29,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 24 [2022-07-22 14:24:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:24:02,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:24:02,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:24:02,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394429309] [2022-07-22 14:24:02,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394429309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:24:02,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:24:02,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 14:24:02,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014087378] [2022-07-22 14:24:02,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:24:02,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 14:24:02,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:24:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 14:24:02,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=83, Unknown=7, NotChecked=0, Total=110 [2022-07-22 14:24:02,752 INFO L87 Difference]: Start difference. First operand 207 states and 285 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:24:08,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:24:08,440 INFO L93 Difference]: Finished difference Result 272 states and 377 transitions. [2022-07-22 14:24:08,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 14:24:08,441 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-07-22 14:24:08,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:24:08,442 INFO L225 Difference]: With dead ends: 272 [2022-07-22 14:24:08,443 INFO L226 Difference]: Without dead ends: 264 [2022-07-22 14:24:08,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.2s TimeCoverageRelationStatistics Valid=24, Invalid=99, Unknown=9, NotChecked=0, Total=132 [2022-07-22 14:24:08,443 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 82 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 14:24:08,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 2435 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 303 Unchecked, 0.8s Time] [2022-07-22 14:24:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-22 14:24:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 210. [2022-07-22 14:24:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 202 states have (on average 1.386138613861386) internal successors, (280), 202 states have internal predecessors, (280), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:24:08,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 290 transitions. [2022-07-22 14:24:08,450 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 290 transitions. Word has length 30 [2022-07-22 14:24:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:24:08,450 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 290 transitions. [2022-07-22 14:24:08,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:24:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 290 transitions. [2022-07-22 14:24:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-22 14:24:08,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:24:08,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:24:08,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-22 14:24:08,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:24:08,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:24:08,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:24:08,665 INFO L85 PathProgramCache]: Analyzing trace with hash 286738104, now seen corresponding path program 1 times [2022-07-22 14:24:08,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:24:08,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44313874] [2022-07-22 14:24:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:24:08,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:24:08,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:24:08,667 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) [2022-07-22 14:24:08,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-22 14:24:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:24:09,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 14:24:09,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:24:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:24:12,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:24:12,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:24:12,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44313874] [2022-07-22 14:24:12,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44313874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:24:12,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:24:12,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 14:24:12,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14843601] [2022-07-22 14:24:12,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:24:12,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 14:24:12,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:24:12,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 14:24:12,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:24:12,255 INFO L87 Difference]: Start difference. First operand 210 states and 290 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:24:12,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:24:12,264 INFO L93 Difference]: Finished difference Result 410 states and 562 transitions. [2022-07-22 14:24:12,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 14:24:12,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-07-22 14:24:12,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:24:12,265 INFO L225 Difference]: With dead ends: 410 [2022-07-22 14:24:12,266 INFO L226 Difference]: Without dead ends: 229 [2022-07-22 14:24:12,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:24:12,267 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 25 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:24:12,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1436 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 48 Unchecked, 0.0s Time] [2022-07-22 14:24:12,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-22 14:24:12,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 210. [2022-07-22 14:24:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 202 states have (on average 1.381188118811881) internal successors, (279), 202 states have internal predecessors, (279), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:24:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 289 transitions. [2022-07-22 14:24:12,271 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 289 transitions. Word has length 31 [2022-07-22 14:24:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:24:12,272 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 289 transitions. [2022-07-22 14:24:12,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:24:12,272 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 289 transitions. [2022-07-22 14:24:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-22 14:24:12,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:24:12,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:24:12,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-22 14:24:12,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:24:12,498 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:24:12,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:24:12,499 INFO L85 PathProgramCache]: Analyzing trace with hash 981055124, now seen corresponding path program 1 times [2022-07-22 14:24:12,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:24:12,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396999189] [2022-07-22 14:24:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:24:12,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:24:12,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:24:12,501 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) [2022-07-22 14:24:12,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-22 14:24:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:24:12,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 14:24:12,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:24:13,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-22 14:24:18,888 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:24:18,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 24 [2022-07-22 14:24:21,214 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_104| (_ BitVec 64)) (|v_skolemized_q#valueAsBitvector_103| (_ BitVec 64)) (v_arrayElimCell_9 (_ BitVec 32)) (currentRoundingMode RoundingMode)) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_104|) |c_ULTIMATE.start___ieee754_pow_~hx~2#1|) (fp.lt (let ((.cse0 (concat (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_103|)) v_arrayElimCell_9))) (fp ((_ extract 63 63) .cse0) ((_ extract 62 52) .cse0) ((_ extract 51 0) .cse0))) ((_ to_fp 11 53) currentRoundingMode 1.0)) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_103|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_103|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_103|)) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_104|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_104|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_104|))))) is different from true [2022-07-22 14:24:24,279 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_104| (_ BitVec 64)) (|v_skolemized_q#valueAsBitvector_103| (_ BitVec 64)) (v_arrayElimCell_9 (_ BitVec 32)) (currentRoundingMode RoundingMode)) (and (= (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_104|)) |c_ULTIMATE.start___ieee754_pow_~ix~0#1|) (fp.lt (let ((.cse0 (concat (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_103|)) v_arrayElimCell_9))) (fp ((_ extract 63 63) .cse0) ((_ extract 62 52) .cse0) ((_ extract 51 0) .cse0))) ((_ to_fp 11 53) currentRoundingMode 1.0)) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_103|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_103|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_103|)) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_104|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_104|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_104|))))) is different from true [2022-07-22 14:24:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:24:25,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:24:25,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:24:25,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396999189] [2022-07-22 14:24:25,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396999189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:24:25,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:24:25,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 14:24:25,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391938841] [2022-07-22 14:24:25,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:24:25,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 14:24:25,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:24:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 14:24:25,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=45, Unknown=2, NotChecked=26, Total=90 [2022-07-22 14:24:25,814 INFO L87 Difference]: Start difference. First operand 210 states and 289 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:24:27,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:24:27,052 INFO L93 Difference]: Finished difference Result 221 states and 302 transitions. [2022-07-22 14:24:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 14:24:27,053 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-07-22 14:24:27,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:24:27,054 INFO L225 Difference]: With dead ends: 221 [2022-07-22 14:24:27,054 INFO L226 Difference]: Without dead ends: 213 [2022-07-22 14:24:27,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=21, Invalid=57, Unknown=2, NotChecked=30, Total=110 [2022-07-22 14:24:27,055 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 2 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 772 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 14:24:27,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1747 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 772 Unchecked, 0.4s Time] [2022-07-22 14:24:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-22 14:24:27,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2022-07-22 14:24:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 204 states have (on average 1.3872549019607843) internal successors, (283), 204 states have internal predecessors, (283), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:24:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 293 transitions. [2022-07-22 14:24:27,063 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 293 transitions. Word has length 31 [2022-07-22 14:24:27,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:24:27,063 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 293 transitions. [2022-07-22 14:24:27,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:24:27,063 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 293 transitions. [2022-07-22 14:24:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-22 14:24:27,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:24:27,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:24:27,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-22 14:24:27,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:24:27,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:24:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:24:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1082432038, now seen corresponding path program 1 times [2022-07-22 14:24:27,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:24:27,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684071315] [2022-07-22 14:24:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:24:27,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:24:27,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:24:27,282 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) [2022-07-22 14:24:27,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-22 14:24:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:24:28,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 14:24:28,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:24:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:24:31,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:24:31,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:24:31,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684071315] [2022-07-22 14:24:31,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684071315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:24:31,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:24:31,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 14:24:31,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806041088] [2022-07-22 14:24:31,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:24:31,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 14:24:31,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:24:31,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 14:24:31,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:24:31,142 INFO L87 Difference]: Start difference. First operand 212 states and 293 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:24:31,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:24:31,147 INFO L93 Difference]: Finished difference Result 412 states and 565 transitions. [2022-07-22 14:24:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 14:24:31,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-07-22 14:24:31,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:24:31,149 INFO L225 Difference]: With dead ends: 412 [2022-07-22 14:24:31,149 INFO L226 Difference]: Without dead ends: 231 [2022-07-22 14:24:31,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:24:31,150 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 25 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:24:31,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1366 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 46 Unchecked, 0.0s Time] [2022-07-22 14:24:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-22 14:24:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 210. [2022-07-22 14:24:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 202 states have (on average 1.381188118811881) internal successors, (279), 202 states have internal predecessors, (279), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:24:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 289 transitions. [2022-07-22 14:24:31,155 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 289 transitions. Word has length 32 [2022-07-22 14:24:31,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:24:31,155 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 289 transitions. [2022-07-22 14:24:31,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:24:31,155 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 289 transitions. [2022-07-22 14:24:31,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-22 14:24:31,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:24:31,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:24:31,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-22 14:24:31,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:24:31,359 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:24:31,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:24:31,360 INFO L85 PathProgramCache]: Analyzing trace with hash 17991866, now seen corresponding path program 1 times [2022-07-22 14:24:31,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:24:31,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011398413] [2022-07-22 14:24:31,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:24:31,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:24:31,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:24:31,361 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) [2022-07-22 14:24:31,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-22 14:24:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:24:31,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 14:24:31,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:24:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:24:34,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:24:34,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:24:34,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011398413] [2022-07-22 14:24:34,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011398413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:24:34,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:24:34,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 14:24:34,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982440791] [2022-07-22 14:24:34,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:24:34,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 14:24:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:24:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 14:24:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:24:34,147 INFO L87 Difference]: Start difference. First operand 210 states and 289 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:24:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:24:34,152 INFO L93 Difference]: Finished difference Result 372 states and 502 transitions. [2022-07-22 14:24:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 14:24:34,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-07-22 14:24:34,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:24:34,153 INFO L225 Difference]: With dead ends: 372 [2022-07-22 14:24:34,153 INFO L226 Difference]: Without dead ends: 178 [2022-07-22 14:24:34,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:24:34,154 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 26 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:24:34,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1040 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-07-22 14:24:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-07-22 14:24:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 157. [2022-07-22 14:24:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 149 states have (on average 1.2885906040268456) internal successors, (192), 149 states have internal predecessors, (192), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:24:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 202 transitions. [2022-07-22 14:24:34,163 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 202 transitions. Word has length 32 [2022-07-22 14:24:34,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:24:34,163 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 202 transitions. [2022-07-22 14:24:34,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:24:34,163 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 202 transitions. [2022-07-22 14:24:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-22 14:24:34,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:24:34,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:24:34,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-22 14:24:34,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:24:34,380 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:24:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:24:34,380 INFO L85 PathProgramCache]: Analyzing trace with hash 541628782, now seen corresponding path program 1 times [2022-07-22 14:24:34,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:24:34,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864092216] [2022-07-22 14:24:34,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:24:34,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:24:34,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:24:34,384 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) [2022-07-22 14:24:34,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-22 14:24:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:24:34,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 14:24:34,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:24:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:24:37,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:24:37,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:24:37,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864092216] [2022-07-22 14:24:37,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864092216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:24:37,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:24:37,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 14:24:37,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116382246] [2022-07-22 14:24:37,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:24:37,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 14:24:37,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:24:37,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 14:24:37,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 14:24:37,519 INFO L87 Difference]: Start difference. First operand 157 states and 202 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:24:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:24:37,522 INFO L93 Difference]: Finished difference Result 174 states and 217 transitions. [2022-07-22 14:24:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 14:24:37,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-07-22 14:24:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:24:37,523 INFO L225 Difference]: With dead ends: 174 [2022-07-22 14:24:37,523 INFO L226 Difference]: Without dead ends: 165 [2022-07-22 14:24:37,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 14:24:37,524 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 134 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:24:37,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 616 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2022-07-22 14:24:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-22 14:24:37,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2022-07-22 14:24:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 149 states have (on average 1.2818791946308725) internal successors, (191), 149 states have internal predecessors, (191), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:24:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 201 transitions. [2022-07-22 14:24:37,528 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 201 transitions. Word has length 33 [2022-07-22 14:24:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:24:37,528 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 201 transitions. [2022-07-22 14:24:37,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:24:37,529 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 201 transitions. [2022-07-22 14:24:37,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-22 14:24:37,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:24:37,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:24:37,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-22 14:24:37,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:24:37,738 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:24:37,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:24:37,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1221687152, now seen corresponding path program 1 times [2022-07-22 14:24:37,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:24:37,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790062174] [2022-07-22 14:24:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:24:37,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:24:37,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:24:37,739 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) [2022-07-22 14:24:37,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-22 14:24:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:24:37,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 14:24:37,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:24:39,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-22 14:24:44,080 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:24:44,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 24 [2022-07-22 14:25:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:25:13,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:25:13,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:25:13,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790062174] [2022-07-22 14:25:13,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790062174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:25:13,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:25:13,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 14:25:13,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962062562] [2022-07-22 14:25:13,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:25:13,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 14:25:13,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:25:13,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 14:25:13,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=64, Unknown=9, NotChecked=0, Total=90 [2022-07-22 14:25:13,959 INFO L87 Difference]: Start difference. First operand 157 states and 201 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)