./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 6c24879c 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-?-6c24879 [2022-07-12 02:58:43,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:58:43,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:58:43,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:58:43,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:58:43,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:58:43,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:58:43,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:58:43,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:58:43,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:58:43,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:58:43,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:58:43,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:58:43,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:58:43,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:58:43,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:58:43,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:58:43,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:58:43,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:58:43,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:58:43,082 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:58:43,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:58:43,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:58:43,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:58:43,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:58:43,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:58:43,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:58:43,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:58:43,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:58:43,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:58:43,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:58:43,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:58:43,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:58:43,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:58:43,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:58:43,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:58:43,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:58:43,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:58:43,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:58:43,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:58:43,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:58:43,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:58:43,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 02:58:43,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:58:43,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:58:43,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:58:43,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:58:43,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:58:43,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:58:43,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:58:43,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:58:43,124 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:58:43,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:58:43,125 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:58:43,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 02:58:43,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:58:43,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:58:43,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:58:43,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:58:43,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:58:43,126 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:58:43,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:58:43,127 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:58:43,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:58:43,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:58:43,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:58:43,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:58:43,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:58:43,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:58:43,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:58:43,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:58:43,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 02:58:43,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 02:58:43,129 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:58:43,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:58:43,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:58:43,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c405523cac8e5f9cc9432e526f7ec96d6e0134414c1ccc7da7da81ae6ee7579 [2022-07-12 02:58:43,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:58:43,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:58:43,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:58:43,348 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:58:43,349 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:58:43,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0874.c [2022-07-12 02:58:43,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b18617708/1e1f65f2f10e48e0a199b35765467b7b/FLAGd8b8bb8d8 [2022-07-12 02:58:44,016 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:58:44,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0874.c [2022-07-12 02:58:44,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b18617708/1e1f65f2f10e48e0a199b35765467b7b/FLAGd8b8bb8d8 [2022-07-12 02:58:44,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b18617708/1e1f65f2f10e48e0a199b35765467b7b [2022-07-12 02:58:44,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:58:44,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:58:44,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:58:44,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:58:44,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:58:44,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:58:44" (1/1) ... [2022-07-12 02:58:44,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77223072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:44, skipping insertion in model container [2022-07-12 02:58:44,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:58:44" (1/1) ... [2022-07-12 02:58:44,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:58:44,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:58:44,722 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) [2022-07-12 02:58:44,729 INFO L158 Benchmark]: Toolchain (without parser) took 388.98ms. Allocated memory is still 111.1MB. Free memory was 74.5MB in the beginning and 84.3MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:58:44,730 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 111.1MB. Free memory was 83.7MB in the beginning and 83.7MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:58:44,732 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.41ms. Allocated memory is still 111.1MB. Free memory was 74.2MB in the beginning and 84.3MB in the end (delta: -10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:58:44,734 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 111.1MB. Free memory was 83.7MB in the beginning and 83.7MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.41ms. Allocated memory is still 111.1MB. Free memory was 74.2MB in the beginning and 84.3MB in the end (delta: -10.1MB). Peak memory consumption was 8.4MB. 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-?-6c24879 [2022-07-12 02:58:47,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:58:47,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:58:47,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:58:47,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:58:47,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:58:47,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:58:47,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:58:47,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:58:47,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:58:47,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:58:47,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:58:47,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:58:47,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:58:47,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:58:47,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:58:47,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:58:47,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:58:47,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:58:47,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:58:47,341 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:58:47,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:58:47,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:58:47,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:58:47,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:58:47,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:58:47,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:58:47,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:58:47,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:58:47,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:58:47,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:58:47,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:58:47,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:58:47,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:58:47,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:58:47,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:58:47,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:58:47,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:58:47,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:58:47,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:58:47,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:58:47,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:58:47,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 02:58:47,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:58:47,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:58:47,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:58:47,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:58:47,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:58:47,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:58:47,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:58:47,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:58:47,389 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:58:47,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:58:47,390 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:58:47,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:58:47,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:58:47,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:58:47,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:58:47,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:58:47,390 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 02:58:47,391 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 02:58:47,391 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 02:58:47,391 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:58:47,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:58:47,391 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:58:47,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:58:47,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:58:47,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:58:47,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:58:47,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:58:47,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:58:47,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:58:47,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:58:47,393 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 02:58:47,393 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 02:58:47,393 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:58:47,393 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:58:47,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:58:47,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 02:58:47,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c405523cac8e5f9cc9432e526f7ec96d6e0134414c1ccc7da7da81ae6ee7579 [2022-07-12 02:58:47,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:58:47,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:58:47,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:58:47,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:58:47,708 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:58:47,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0874.c [2022-07-12 02:58:47,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0eb978b/88a8cfe20dd14e7c922a4558a033159b/FLAG0c283169d [2022-07-12 02:58:48,306 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:58:48,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0874.c [2022-07-12 02:58:48,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0eb978b/88a8cfe20dd14e7c922a4558a033159b/FLAG0c283169d [2022-07-12 02:58:48,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0eb978b/88a8cfe20dd14e7c922a4558a033159b [2022-07-12 02:58:48,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:58:48,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:58:48,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:58:48,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:58:48,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:58:48,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:58:48" (1/1) ... [2022-07-12 02:58:48,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c888da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:48, skipping insertion in model container [2022-07-12 02:58:48,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:58:48" (1/1) ... [2022-07-12 02:58:48,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:58:48,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:58:49,115 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] [2022-07-12 02:58:49,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:58:49,134 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:58:49,241 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] [2022-07-12 02:58:49,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:58:49,254 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:58:49,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:49 WrapperNode [2022-07-12 02:58:49,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:58:49,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:58:49,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:58:49,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:58:49,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:49" (1/1) ... [2022-07-12 02:58:49,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:49" (1/1) ... [2022-07-12 02:58:49,332 INFO L137 Inliner]: procedures = 25, calls = 165, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 757 [2022-07-12 02:58:49,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:58:49,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:58:49,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:58:49,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:58:49,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:49" (1/1) ... [2022-07-12 02:58:49,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:49" (1/1) ... [2022-07-12 02:58:49,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:49" (1/1) ... [2022-07-12 02:58:49,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:49" (1/1) ... [2022-07-12 02:58:49,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:49" (1/1) ... [2022-07-12 02:58:49,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:49" (1/1) ... [2022-07-12 02:58:49,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:49" (1/1) ... [2022-07-12 02:58:49,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:58:49,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:58:49,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:58:49,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:58:49,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:49" (1/1) ... [2022-07-12 02:58:49,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:58:49,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:58:49,526 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) [2022-07-12 02:58:49,560 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 [2022-07-12 02:58:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:58:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-07-12 02:58:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_double [2022-07-12 02:58:49,576 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_double [2022-07-12 02:58:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-07-12 02:58:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 02:58:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 02:58:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-07-12 02:58:49,576 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-07-12 02:58:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2022-07-12 02:58:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 02:58:49,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:58:49,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:58:49,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 02:58:49,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 02:58:49,724 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:58:49,725 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:59:49,102 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:59:49,120 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:59:49,122 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2022-07-12 02:59:49,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:59:49 BoogieIcfgContainer [2022-07-12 02:59:49,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:59:49,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:59:49,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:59:49,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:59:49,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:58:48" (1/3) ... [2022-07-12 02:59:49,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb5b1a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:59:49, skipping insertion in model container [2022-07-12 02:59:49,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:58:49" (2/3) ... [2022-07-12 02:59:49,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb5b1a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:59:49, skipping insertion in model container [2022-07-12 02:59:49,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:59:49" (3/3) ... [2022-07-12 02:59:49,144 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0874.c [2022-07-12 02:59:49,153 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:59:49,161 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:59:49,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:59:49,218 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@6a249dfb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d72243a [2022-07-12 02:59:49,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:59:49,223 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) [2022-07-12 02:59:49,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-12 02:59:49,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:59:49,229 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] [2022-07-12 02:59:49,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:59:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:59:49,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1061139955, now seen corresponding path program 1 times [2022-07-12 02:59:49,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:59:49,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153149897] [2022-07-12 02:59:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:59:49,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:59:49,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:59:49,246 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) [2022-07-12 02:59:49,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 02:59:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:59:49,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 02:59:49,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:59:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:59:49,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:59:49,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:59:49,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153149897] [2022-07-12 02:59:49,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153149897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:59:49,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:59:49,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:59:49,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668942896] [2022-07-12 02:59:49,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:59:49,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:59:49,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:59:49,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:59:49,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:59:49,586 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) [2022-07-12 02:59:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:59:49,633 INFO L93 Difference]: Finished difference Result 421 states and 711 transitions. [2022-07-12 02:59:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:59:49,635 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 [2022-07-12 02:59:49,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:59:49,641 INFO L225 Difference]: With dead ends: 421 [2022-07-12 02:59:49,641 INFO L226 Difference]: Without dead ends: 208 [2022-07-12 02:59:49,643 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 [2022-07-12 02:59:49,645 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 [2022-07-12 02:59:49,646 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] [2022-07-12 02:59:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-12 02:59:49,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-12 02:59:49,684 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) [2022-07-12 02:59:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2022-07-12 02:59:49,686 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 20 [2022-07-12 02:59:49,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:59:49,686 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2022-07-12 02:59:49,686 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) [2022-07-12 02:59:49,686 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2022-07-12 02:59:49,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-12 02:59:49,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:59:49,687 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] [2022-07-12 02:59:49,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 02:59:49,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:59:49,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:59:49,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:59:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1299029151, now seen corresponding path program 1 times [2022-07-12 02:59:49,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:59:49,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727820751] [2022-07-12 02:59:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:59:49,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:59:49,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:59:49,904 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) [2022-07-12 02:59:49,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 02:59:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:59:50,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 02:59:50,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:59:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:59:52,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:59:52,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:59:52,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727820751] [2022-07-12 02:59:52,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727820751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:59:52,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:59:52,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 02:59:52,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243509688] [2022-07-12 02:59:52,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:59:52,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 02:59:52,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:59:52,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 02:59:52,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 02:59:52,452 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) [2022-07-12 02:59:52,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:59:52,486 INFO L93 Difference]: Finished difference Result 216 states and 296 transitions. [2022-07-12 02:59:52,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 02:59:52,486 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 [2022-07-12 02:59:52,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:59:52,493 INFO L225 Difference]: With dead ends: 216 [2022-07-12 02:59:52,495 INFO L226 Difference]: Without dead ends: 208 [2022-07-12 02:59:52,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 02:59:52,509 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 [2022-07-12 02:59:52,510 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] [2022-07-12 02:59:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-12 02:59:52,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-12 02:59:52,538 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) [2022-07-12 02:59:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 288 transitions. [2022-07-12 02:59:52,541 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 288 transitions. Word has length 25 [2022-07-12 02:59:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:59:52,542 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 288 transitions. [2022-07-12 02:59:52,543 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) [2022-07-12 02:59:52,543 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 288 transitions. [2022-07-12 02:59:52,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-12 02:59:52,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:59:52,544 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] [2022-07-12 02:59:52,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 02:59:52,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:59:52,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:59:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:59:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1796740572, now seen corresponding path program 1 times [2022-07-12 02:59:52,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:59:52,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000462529] [2022-07-12 02:59:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:59:52,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:59:52,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:59:52,764 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) [2022-07-12 02:59:52,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 02:59:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:59:53,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 02:59:53,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:59:54,246 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 [2022-07-12 02:59:59,622 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 02:59:59,622 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 [2022-07-12 03:00:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:00:30,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:00:30,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:00:30,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000462529] [2022-07-12 03:00:30,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000462529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:00:30,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:00:30,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 03:00:30,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840700023] [2022-07-12 03:00:30,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:00:30,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 03:00:30,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:00:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 03:00:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=63, Unknown=10, NotChecked=0, Total=90 [2022-07-12 03:00:30,358 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) [2022-07-12 03:00:32,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:00:32,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:00:32,563 INFO L93 Difference]: Finished difference Result 216 states and 295 transitions. [2022-07-12 03:00:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 03:00:32,564 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 [2022-07-12 03:00:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:00:32,567 INFO L225 Difference]: With dead ends: 216 [2022-07-12 03:00:32,567 INFO L226 Difference]: Without dead ends: 208 [2022-07-12 03:00:32,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=17, Invalid=63, Unknown=10, NotChecked=0, Total=90 [2022-07-12 03:00:32,579 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:00:32,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2295 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 189 Unchecked, 2.1s Time] [2022-07-12 03:00:32,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-12 03:00:32,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-12 03:00:32,619 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) [2022-07-12 03:00:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 287 transitions. [2022-07-12 03:00:32,631 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 287 transitions. Word has length 27 [2022-07-12 03:00:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:00:32,632 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 287 transitions. [2022-07-12 03:00:32,632 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) [2022-07-12 03:00:32,632 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 287 transitions. [2022-07-12 03:00:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-12 03:00:32,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:00:32,633 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] [2022-07-12 03:00:32,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 03:00:32,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:00:32,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:00:32,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:00:32,847 INFO L85 PathProgramCache]: Analyzing trace with hash 987393946, now seen corresponding path program 1 times [2022-07-12 03:00:32,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:00:32,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118339534] [2022-07-12 03:00:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:00:32,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:00:32,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:00:32,852 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) [2022-07-12 03:00:32,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 03:00:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:00:33,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-12 03:00:33,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:00:35,430 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 [2022-07-12 03:00:42,232 INFO L356 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-07-12 03:00:42,232 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 [2022-07-12 03:00:47,473 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:00:47,473 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 [2022-07-12 03:00:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:00:51,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:00:51,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:00:51,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118339534] [2022-07-12 03:00:51,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118339534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:00:51,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:00:51,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 03:00:51,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001622515] [2022-07-12 03:00:51,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:00:51,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 03:00:51,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:00:51,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 03:00:51,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 03:00:51,834 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) [2022-07-12 03:00:54,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:00:56,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:00:59,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:01,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:03,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:07,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:10,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:12,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:13,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:14,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:16,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:18,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:19,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:21,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:23,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:25,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:27,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:30,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:33,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:37,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:40,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:43,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:45,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:47,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:50,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:53,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:01:56,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:02:00,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:02:02,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:02:04,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:02:06,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:02:08,900 WARN L534 Checker$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 [] [2022-07-12 03:02:11,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:02:13,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:02:15,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:02:17,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:02:17,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:02:17,450 INFO L93 Difference]: Finished difference Result 216 states and 294 transitions. [2022-07-12 03:02:17,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 03:02:17,497 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 [2022-07-12 03:02:17,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:02:17,498 INFO L225 Difference]: With dead ends: 216 [2022-07-12 03:02:17,498 INFO L226 Difference]: Without dead ends: 207 [2022-07-12 03:02:17,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 03:02:17,499 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 0 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 85.6s IncrementalHoareTripleChecker+Time [2022-07-12 03:02:17,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2456 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 26 Unknown, 241 Unchecked, 85.6s Time] [2022-07-12 03:02:17,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-12 03:02:17,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-07-12 03:02:17,529 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) [2022-07-12 03:02:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 285 transitions. [2022-07-12 03:02:17,530 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 285 transitions. Word has length 27 [2022-07-12 03:02:17,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:02:17,530 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 285 transitions. [2022-07-12 03:02:17,532 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) [2022-07-12 03:02:17,532 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 285 transitions. [2022-07-12 03:02:17,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-12 03:02:17,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:02:17,539 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] [2022-07-12 03:02:17,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 03:02:17,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:02:17,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:02:17,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:02:17,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1232482242, now seen corresponding path program 1 times [2022-07-12 03:02:17,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:02:17,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370698626] [2022-07-12 03:02:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:02:17,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:02:17,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:02:17,755 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) [2022-07-12 03:02:17,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 03:02:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:02:18,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 03:02:18,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:02:19,308 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 [2022-07-12 03:02:24,881 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:02:24,882 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 [2022-07-12 03:02:27,213 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_89| (_ BitVec 64)) (v_arrayElimCell_8 (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_88| (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (= |c_ULTIMATE.start___ieee754_pow_~hx~2#1| ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_89|)) (fp.lt (let ((.cse0 (concat (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_88|)) v_arrayElimCell_8))) (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_89|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_89|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_89|)) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_88|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_88|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_88|))))) is different from true [2022-07-12 03:02:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:02:46,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:02:46,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:02:46,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370698626] [2022-07-12 03:02:46,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370698626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:02:46,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:02:46,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 03:02:46,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825848937] [2022-07-12 03:02:46,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:02:46,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 03:02:46,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:02:46,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 03:02:46,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=70, Unknown=5, NotChecked=16, Total=110 [2022-07-12 03:02:46,662 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) [2022-07-12 03:02:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:02:49,916 INFO L93 Difference]: Finished difference Result 272 states and 377 transitions. [2022-07-12 03:02:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 03:02:49,917 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 [2022-07-12 03:02:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:02:49,920 INFO L225 Difference]: With dead ends: 272 [2022-07-12 03:02:49,920 INFO L226 Difference]: Without dead ends: 264 [2022-07-12 03:02:49,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=23, Invalid=85, Unknown=6, NotChecked=18, Total=132 [2022-07-12 03:02:49,921 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 81 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 607 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 03:02:49,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2236 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 607 Unchecked, 0.2s Time] [2022-07-12 03:02:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-12 03:02:49,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 210. [2022-07-12 03:02:49,928 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) [2022-07-12 03:02:49,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 290 transitions. [2022-07-12 03:02:49,928 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 290 transitions. Word has length 30 [2022-07-12 03:02:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:02:49,929 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 290 transitions. [2022-07-12 03:02:49,929 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) [2022-07-12 03:02:49,929 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 290 transitions. [2022-07-12 03:02:49,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-12 03:02:49,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:02:49,930 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] [2022-07-12 03:02:49,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-12 03:02:50,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:02:50,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:02:50,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:02:50,157 INFO L85 PathProgramCache]: Analyzing trace with hash 286738104, now seen corresponding path program 1 times [2022-07-12 03:02:50,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:02:50,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990286862] [2022-07-12 03:02:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:02:50,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:02:50,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:02:50,172 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) [2022-07-12 03:02:50,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 03:02:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:02:51,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 03:02:51,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:02:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:02:54,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:02:54,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:02:54,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990286862] [2022-07-12 03:02:54,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990286862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:02:54,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:02:54,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 03:02:54,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846985090] [2022-07-12 03:02:54,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:02:54,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 03:02:54,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:02:54,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 03:02:54,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 03:02:54,363 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) [2022-07-12 03:02:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:02:54,399 INFO L93 Difference]: Finished difference Result 509 states and 694 transitions. [2022-07-12 03:02:54,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 03:02:54,400 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 [2022-07-12 03:02:54,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:02:54,402 INFO L225 Difference]: With dead ends: 509 [2022-07-12 03:02:54,402 INFO L226 Difference]: Without dead ends: 328 [2022-07-12 03:02:54,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 03:02:54,408 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 153 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:02:54,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1941 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 62 Unchecked, 0.0s Time] [2022-07-12 03:02:54,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-12 03:02:54,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 210. [2022-07-12 03:02:54,420 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) [2022-07-12 03:02:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 289 transitions. [2022-07-12 03:02:54,423 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 289 transitions. Word has length 31 [2022-07-12 03:02:54,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:02:54,426 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 289 transitions. [2022-07-12 03:02:54,426 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) [2022-07-12 03:02:54,427 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 289 transitions. [2022-07-12 03:02:54,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-12 03:02:54,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:02:54,433 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] [2022-07-12 03:02:54,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 03:02:54,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:02:54,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:02:54,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:02:54,652 INFO L85 PathProgramCache]: Analyzing trace with hash 981055124, now seen corresponding path program 1 times [2022-07-12 03:02:54,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:02:54,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611060768] [2022-07-12 03:02:54,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:02:54,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:02:54,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:02:54,667 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:02:54,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 03:02:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:02:54,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 03:02:54,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:02:56,246 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 [2022-07-12 03:03:02,280 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:03:02,280 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 [2022-07-12 03:03:04,663 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 [2022-07-12 03:03:19,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:03:19,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:03:19,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:03:19,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611060768] [2022-07-12 03:03:19,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611060768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:03:19,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:03:19,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 03:03:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573928324] [2022-07-12 03:03:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:03:19,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 03:03:19,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:03:19,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 03:03:19,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=4, NotChecked=14, Total=90 [2022-07-12 03:03:19,343 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) [2022-07-12 03:03:21,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:03:21,583 INFO L93 Difference]: Finished difference Result 226 states and 303 transitions. [2022-07-12 03:03:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 03:03:21,583 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 [2022-07-12 03:03:21,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:03:21,586 INFO L225 Difference]: With dead ends: 226 [2022-07-12 03:03:21,586 INFO L226 Difference]: Without dead ends: 218 [2022-07-12 03:03:21,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=4, NotChecked=16, Total=110 [2022-07-12 03:03:21,588 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 93 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 475 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:03:21,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1919 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 475 Unchecked, 0.1s Time] [2022-07-12 03:03:21,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-12 03:03:21,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 209. [2022-07-12 03:03:21,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 201 states have (on average 1.3781094527363185) internal successors, (277), 201 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) [2022-07-12 03:03:21,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 287 transitions. [2022-07-12 03:03:21,630 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 287 transitions. Word has length 31 [2022-07-12 03:03:21,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:03:21,630 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 287 transitions. [2022-07-12 03:03:21,630 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) [2022-07-12 03:03:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 287 transitions. [2022-07-12 03:03:21,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-12 03:03:21,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:03:21,631 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] [2022-07-12 03:03:21,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-12 03:03:21,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:03:21,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:03:21,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:03:21,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1082432038, now seen corresponding path program 1 times [2022-07-12 03:03:21,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:03:21,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192807768] [2022-07-12 03:03:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:03:21,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:03:21,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:03:21,848 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) [2022-07-12 03:03:21,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-12 03:03:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:03:22,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 03:03:22,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:03:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:03:26,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:03:26,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:03:26,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192807768] [2022-07-12 03:03:26,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192807768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:03:26,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:03:26,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 03:03:26,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558380870] [2022-07-12 03:03:26,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:03:26,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 03:03:26,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:03:26,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 03:03:26,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 03:03:26,142 INFO L87 Difference]: Start difference. First operand 209 states and 287 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) [2022-07-12 03:03:26,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:03:26,148 INFO L93 Difference]: Finished difference Result 411 states and 563 transitions. [2022-07-12 03:03:26,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 03:03:26,149 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 [2022-07-12 03:03:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:03:26,150 INFO L225 Difference]: With dead ends: 411 [2022-07-12 03:03:26,150 INFO L226 Difference]: Without dead ends: 230 [2022-07-12 03:03:26,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 03:03:26,150 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 25 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1431 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 [2022-07-12 03:03:26,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1431 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 48 Unchecked, 0.0s Time] [2022-07-12 03:03:26,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-12 03:03:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 209. [2022-07-12 03:03:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 201 states have (on average 1.3781094527363185) internal successors, (277), 201 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) [2022-07-12 03:03:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 287 transitions. [2022-07-12 03:03:26,161 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 287 transitions. Word has length 32 [2022-07-12 03:03:26,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:03:26,162 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 287 transitions. [2022-07-12 03:03:26,162 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) [2022-07-12 03:03:26,162 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 287 transitions. [2022-07-12 03:03:26,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 03:03:26,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:03:26,163 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] [2022-07-12 03:03:26,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-12 03:03:26,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:03:26,380 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:03:26,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:03:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash 541628782, now seen corresponding path program 1 times [2022-07-12 03:03:26,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:03:26,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538377736] [2022-07-12 03:03:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:03:26,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:03:26,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:03:26,382 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) [2022-07-12 03:03:26,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-12 03:03:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:03:26,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 03:03:26,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:03:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:03:29,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:03:29,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:03:29,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538377736] [2022-07-12 03:03:29,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538377736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:03:29,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:03:29,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:03:29,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380577382] [2022-07-12 03:03:29,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:03:29,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:03:29,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:03:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:03:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:03:29,865 INFO L87 Difference]: Start difference. First operand 209 states and 287 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) [2022-07-12 03:03:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:03:29,886 INFO L93 Difference]: Finished difference Result 328 states and 443 transitions. [2022-07-12 03:03:29,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 03:03:29,886 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 [2022-07-12 03:03:29,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:03:29,888 INFO L225 Difference]: With dead ends: 328 [2022-07-12 03:03:29,888 INFO L226 Difference]: Without dead ends: 319 [2022-07-12 03:03:29,888 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 [2022-07-12 03:03:29,889 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 148 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:03:29,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1454 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 36 Unchecked, 0.0s Time] [2022-07-12 03:03:29,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-12 03:03:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 209. [2022-07-12 03:03:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 201 states have (on average 1.373134328358209) internal successors, (276), 201 states have internal predecessors, (276), 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) [2022-07-12 03:03:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 286 transitions. [2022-07-12 03:03:29,901 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 286 transitions. Word has length 33 [2022-07-12 03:03:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:03:29,902 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 286 transitions. [2022-07-12 03:03:29,902 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) [2022-07-12 03:03:29,902 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 286 transitions. [2022-07-12 03:03:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 03:03:29,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:03:29,903 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] [2022-07-12 03:03:29,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-12 03:03:30,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:03:30,117 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:03:30,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:03:30,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1221687152, now seen corresponding path program 1 times [2022-07-12 03:03:30,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:03:30,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049680240] [2022-07-12 03:03:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:03:30,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:03:30,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:03:30,135 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) [2022-07-12 03:03:30,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-12 03:03:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:03:30,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 03:03:30,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:03:31,700 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 [2022-07-12 03:03:37,143 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:03:37,143 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