./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0882.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0882.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa --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 3420d94795154cd5f059d8ec6bdcee482b4f1cb5d11f69298f0ab04296514804 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:00:58,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:00:58,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:00:58,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:00:58,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:00:58,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:00:58,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:00:58,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:00:58,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:00:58,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:00:58,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:00:58,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:00:58,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:00:58,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:00:58,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:00:58,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:00:58,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:00:58,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:00:58,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:00:58,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:00:58,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:00:58,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:00:58,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:00:58,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:00:58,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:00:58,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:00:58,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:00:58,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:00:58,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:00:58,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:00:58,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:00:58,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:00:58,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:00:58,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:00:58,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:00:58,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:00:58,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:00:58,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:00:58,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:00:58,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:00:58,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:00:58,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:00:58,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:00:58,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:00:58,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:00:58,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:00:58,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:00:58,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:00:58,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:00:58,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:00:58,599 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:00:58,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:00:58,599 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:00:58,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:00:58,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:00:58,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:00:58,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:00:58,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:00:58,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:00:58,600 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:00:58,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:00:58,600 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:00:58,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:00:58,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:00:58,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:00:58,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:00:58,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:00:58,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:00:58,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:00:58,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:00:58,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:00:58,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:00:58,601 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:00:58,601 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:00:58,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:00:58,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:00:58,602 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3420d94795154cd5f059d8ec6bdcee482b4f1cb5d11f69298f0ab04296514804 [2021-12-06 21:00:58,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:00:58,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:00:58,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:00:58,808 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:00:58,808 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:00:58,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/double_req_bl_0882.c [2021-12-06 21:00:58,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/data/9889530f5/c492bffcd275437d89bfb1592e3610b9/FLAGb7ad8bd01 [2021-12-06 21:00:59,270 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:00:59,271 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/sv-benchmarks/c/float-newlib/double_req_bl_0882.c [2021-12-06 21:00:59,279 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/data/9889530f5/c492bffcd275437d89bfb1592e3610b9/FLAGb7ad8bd01 [2021-12-06 21:00:59,288 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/data/9889530f5/c492bffcd275437d89bfb1592e3610b9 [2021-12-06 21:00:59,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:00:59,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:00:59,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:00:59,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:00:59,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:00:59,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:00:59" (1/1) ... [2021-12-06 21:00:59,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae51b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:59, skipping insertion in model container [2021-12-06 21:00:59,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:00:59" (1/1) ... [2021-12-06 21:00:59,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:00:59,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:00:59,507 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:835) 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:1434) 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:539) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2021) 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:1633) 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:1069) 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:1610) 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:1069) 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:1456) 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:3268) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2342) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:595) 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) [2021-12-06 21:00:59,511 INFO L158 Benchmark]: Toolchain (without parser) took 219.58ms. Allocated memory is still 88.1MB. Free memory was 52.8MB in the beginning and 63.8MB in the end (delta: -11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 21:00:59,512 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 88.1MB. Free memory was 69.7MB in the beginning and 69.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:00:59,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.69ms. Allocated memory is still 88.1MB. Free memory was 52.6MB in the beginning and 63.8MB in the end (delta: -11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 21:00:59,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 88.1MB. Free memory was 69.7MB in the beginning and 69.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.69ms. Allocated memory is still 88.1MB. Free memory was 52.6MB in the beginning and 63.8MB in the end (delta: -11.2MB). Peak memory consumption was 10.5MB. 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:835) 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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0882.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa --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 3420d94795154cd5f059d8ec6bdcee482b4f1cb5d11f69298f0ab04296514804 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:01:00,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:01:00,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:01:00,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:01:00,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:01:00,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:01:00,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:01:00,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:01:00,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:01:00,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:01:00,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:01:00,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:01:00,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:01:00,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:01:00,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:01:00,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:01:00,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:01:00,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:01:00,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:01:00,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:01:00,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:01:00,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:01:00,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:01:00,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:01:00,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:01:00,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:01:00,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:01:00,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:01:00,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:01:00,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:01:00,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:01:00,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:01:00,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:01:00,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:01:00,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:01:00,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:01:00,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:01:00,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:01:00,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:01:00,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:01:00,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:01:00,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 21:01:00,941 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:01:00,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:01:00,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:01:00,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:01:00,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:01:00,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:01:00,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:01:00,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:01:00,944 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:01:00,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:01:00,945 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:01:00,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:01:00,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:01:00,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:01:00,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:01:00,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:01:00,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 21:01:00,946 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 21:01:00,946 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 21:01:00,946 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:01:00,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:01:00,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:01:00,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:01:00,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:01:00,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:01:00,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:01:00,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:01:00,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:01:00,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:01:00,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:01:00,948 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 21:01:00,949 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 21:01:00,949 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:01:00,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:01:00,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:01:00,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:01:00,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 21:01:00,950 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3420d94795154cd5f059d8ec6bdcee482b4f1cb5d11f69298f0ab04296514804 [2021-12-06 21:01:01,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:01:01,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:01:01,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:01:01,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:01:01,192 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:01:01,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/double_req_bl_0882.c [2021-12-06 21:01:01,235 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/data/0daa808fc/5a8b7c90849d41bdad4af512e9aaa217/FLAG615dc123b [2021-12-06 21:01:01,634 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:01:01,634 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/sv-benchmarks/c/float-newlib/double_req_bl_0882.c [2021-12-06 21:01:01,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/data/0daa808fc/5a8b7c90849d41bdad4af512e9aaa217/FLAG615dc123b [2021-12-06 21:01:01,653 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/data/0daa808fc/5a8b7c90849d41bdad4af512e9aaa217 [2021-12-06 21:01:01,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:01:01,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:01:01,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:01:01,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:01:01,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:01:01,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:01:01" (1/1) ... [2021-12-06 21:01:01,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c085df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01, skipping insertion in model container [2021-12-06 21:01:01,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:01:01" (1/1) ... [2021-12-06 21:01:01,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:01:01,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:01:01,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/sv-benchmarks/c/float-newlib/double_req_bl_0882.c[14275,14288] [2021-12-06 21:01:01,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:01:01,907 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:01:01,979 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/sv-benchmarks/c/float-newlib/double_req_bl_0882.c[14275,14288] [2021-12-06 21:01:01,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:01:01,997 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:01:01,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01 WrapperNode [2021-12-06 21:01:01,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:01:01,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:01:01,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:01:01,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:01:02,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01" (1/1) ... [2021-12-06 21:01:02,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01" (1/1) ... [2021-12-06 21:01:02,055 INFO L137 Inliner]: procedures = 25, calls = 163, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 779 [2021-12-06 21:01:02,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:01:02,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:01:02,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:01:02,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:01:02,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01" (1/1) ... [2021-12-06 21:01:02,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01" (1/1) ... [2021-12-06 21:01:02,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01" (1/1) ... [2021-12-06 21:01:02,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01" (1/1) ... [2021-12-06 21:01:02,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01" (1/1) ... [2021-12-06 21:01:02,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01" (1/1) ... [2021-12-06 21:01:02,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01" (1/1) ... [2021-12-06 21:01:02,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:01:02,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:01:02,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:01:02,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:01:02,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01" (1/1) ... [2021-12-06 21:01:02,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:01:02,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:01:02,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:01:02,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:01:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:01:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-06 21:01:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_double [2021-12-06 21:01:02,175 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_double [2021-12-06 21:01:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-06 21:01:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 21:01:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 21:01:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-12-06 21:01:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 21:01:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:01:02,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:01:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 21:01:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:01:02,268 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:01:02,269 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:02:00,677 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:02:00,686 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:02:00,686 INFO L301 CfgBuilder]: Removed 60 assume(true) statements. [2021-12-06 21:02:00,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:02:00 BoogieIcfgContainer [2021-12-06 21:02:00,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:02:00,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:02:00,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:02:00,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:02:00,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:01:01" (1/3) ... [2021-12-06 21:02:00,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0fb66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:02:00, skipping insertion in model container [2021-12-06 21:02:00,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:01" (2/3) ... [2021-12-06 21:02:00,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0fb66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:02:00, skipping insertion in model container [2021-12-06 21:02:00,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:02:00" (3/3) ... [2021-12-06 21:02:00,694 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0882.c [2021-12-06 21:02:00,699 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:02:00,699 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:02:00,734 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:02:00,739 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 21:02:00,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:02:00,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 203 states have (on average 1.7044334975369457) internal successors, (346), 204 states have internal predecessors, (346), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:02:00,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 21:02:00,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:00,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:00,758 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:02:00,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:00,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1213354154, now seen corresponding path program 1 times [2021-12-06 21:02:00,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:00,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403265473] [2021-12-06 21:02:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:00,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:00,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:00,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:00,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 21:02:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:00,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 21:02:00,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:01,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:01,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:01,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403265473] [2021-12-06 21:02:01,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403265473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:01,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:01,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 21:02:01,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320467939] [2021-12-06 21:02:01,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:01,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 21:02:01,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:01,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 21:02:01,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 21:02:01,208 INFO L87 Difference]: Start difference. First operand has 209 states, 203 states have (on average 1.7044334975369457) internal successors, (346), 204 states have internal predecessors, (346), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:01,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:01,241 INFO L93 Difference]: Finished difference Result 415 states and 703 transitions. [2021-12-06 21:02:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 21:02:01,243 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 21:02:01,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:01,250 INFO L225 Difference]: With dead ends: 415 [2021-12-06 21:02:01,251 INFO L226 Difference]: Without dead ends: 205 [2021-12-06 21:02:01,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 21:02:01,256 INFO L933 BasicCegarLoop]: 291 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, 291 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 [2021-12-06 21:02:01,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:02:01,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-06 21:02:01,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-12-06 21:02:01,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 200 states have (on average 1.4) internal successors, (280), 200 states have internal predecessors, (280), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:02:01,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 286 transitions. [2021-12-06 21:02:01,295 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 286 transitions. Word has length 11 [2021-12-06 21:02:01,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:01,295 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 286 transitions. [2021-12-06 21:02:01,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:01,296 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 286 transitions. [2021-12-06 21:02:01,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 21:02:01,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:01,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:01,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:02:01,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:01,499 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:02:01,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:01,501 INFO L85 PathProgramCache]: Analyzing trace with hash 15574631, now seen corresponding path program 1 times [2021-12-06 21:02:01,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:01,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916485764] [2021-12-06 21:02:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:01,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:01,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:01,508 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:01,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 21:02:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:01,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 21:02:01,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:02,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 21:02:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:05,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:05,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:05,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916485764] [2021-12-06 21:02:05,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916485764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:05,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:05,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:02:05,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604218929] [2021-12-06 21:02:05,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:05,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:02:05,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:05,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:02:05,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=12, Unknown=1, NotChecked=0, Total=20 [2021-12-06 21:02:05,311 INFO L87 Difference]: Start difference. First operand 205 states and 286 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:07,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:02:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:07,925 INFO L93 Difference]: Finished difference Result 214 states and 295 transitions. [2021-12-06 21:02:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:02:08,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 21:02:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:08,046 INFO L225 Difference]: With dead ends: 214 [2021-12-06 21:02:08,046 INFO L226 Difference]: Without dead ends: 205 [2021-12-06 21:02:08,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2021-12-06 21:02:08,048 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 2 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:08,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1065 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 57 Unchecked, 2.4s Time] [2021-12-06 21:02:08,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-06 21:02:08,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-12-06 21:02:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 200 states have (on average 1.395) internal successors, (279), 200 states have internal predecessors, (279), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:02:08,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 285 transitions. [2021-12-06 21:02:08,069 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 285 transitions. Word has length 13 [2021-12-06 21:02:08,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:08,069 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 285 transitions. [2021-12-06 21:02:08,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:08,070 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 285 transitions. [2021-12-06 21:02:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 21:02:08,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:08,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:08,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 21:02:08,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:08,273 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:02:08,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:08,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1882517460, now seen corresponding path program 1 times [2021-12-06 21:02:08,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:08,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325854371] [2021-12-06 21:02:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:08,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:08,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:08,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:08,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 21:02:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:08,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 21:02:08,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:11,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:11,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:11,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325854371] [2021-12-06 21:02:11,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325854371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:11,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:11,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:02:11,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149929813] [2021-12-06 21:02:11,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:11,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:02:11,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:02:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:02:11,030 INFO L87 Difference]: Start difference. First operand 205 states and 285 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:11,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:11,043 INFO L93 Difference]: Finished difference Result 214 states and 294 transitions. [2021-12-06 21:02:11,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:02:11,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 21:02:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:11,045 INFO L225 Difference]: With dead ends: 214 [2021-12-06 21:02:11,045 INFO L226 Difference]: Without dead ends: 205 [2021-12-06 21:02:11,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:02:11,046 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 0 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1346 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 [2021-12-06 21:02:11,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1346 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 45 Unchecked, 0.0s Time] [2021-12-06 21:02:11,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-06 21:02:11,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-12-06 21:02:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 200 states have (on average 1.39) internal successors, (278), 200 states have internal predecessors, (278), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:02:11,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 284 transitions. [2021-12-06 21:02:11,059 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 284 transitions. Word has length 15 [2021-12-06 21:02:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:11,059 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 284 transitions. [2021-12-06 21:02:11,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 284 transitions. [2021-12-06 21:02:11,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 21:02:11,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:11,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:11,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 21:02:11,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:11,261 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:02:11,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:11,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1880670418, now seen corresponding path program 1 times [2021-12-06 21:02:11,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:11,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043213225] [2021-12-06 21:02:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:11,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:11,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:11,264 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:11,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 21:02:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:11,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 21:02:11,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:12,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:02:12,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-12-06 21:02:14,811 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:02:14,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 44 [2021-12-06 21:02:15,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-06 21:02:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:18,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:18,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:18,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043213225] [2021-12-06 21:02:18,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043213225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:18,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:18,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:02:18,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342668880] [2021-12-06 21:02:18,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:18,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:02:18,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:18,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:02:18,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:02:18,709 INFO L87 Difference]: Start difference. First operand 205 states and 284 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:18,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:18,728 INFO L93 Difference]: Finished difference Result 214 states and 293 transitions. [2021-12-06 21:02:18,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:02:18,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 21:02:18,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:18,731 INFO L225 Difference]: With dead ends: 214 [2021-12-06 21:02:18,731 INFO L226 Difference]: Without dead ends: 204 [2021-12-06 21:02:18,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:02:18,733 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:18,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1507 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 152 Unchecked, 0.0s Time] [2021-12-06 21:02:18,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-06 21:02:18,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-12-06 21:02:18,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.3869346733668342) internal successors, (276), 199 states have internal predecessors, (276), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:02:18,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 282 transitions. [2021-12-06 21:02:18,749 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 282 transitions. Word has length 15 [2021-12-06 21:02:18,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:18,749 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 282 transitions. [2021-12-06 21:02:18,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 282 transitions. [2021-12-06 21:02:18,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 21:02:18,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:18,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:18,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 21:02:18,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:18,952 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:02:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:18,954 INFO L85 PathProgramCache]: Analyzing trace with hash -179671687, now seen corresponding path program 1 times [2021-12-06 21:02:18,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:18,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171488296] [2021-12-06 21:02:18,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:18,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:18,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:18,958 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:18,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 21:02:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:19,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 21:02:19,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:22,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:22,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:22,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171488296] [2021-12-06 21:02:22,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171488296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:22,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:22,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:02:22,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046362334] [2021-12-06 21:02:22,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:22,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:02:22,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:22,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:02:22,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:02:22,205 INFO L87 Difference]: Start difference. First operand 204 states and 282 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:22,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:22,223 INFO L93 Difference]: Finished difference Result 228 states and 312 transitions. [2021-12-06 21:02:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:02:22,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-06 21:02:22,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:22,225 INFO L225 Difference]: With dead ends: 228 [2021-12-06 21:02:22,225 INFO L226 Difference]: Without dead ends: 219 [2021-12-06 21:02:22,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:02:22,227 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 109 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1209 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 [2021-12-06 21:02:22,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1209 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 45 Unchecked, 0.0s Time] [2021-12-06 21:02:22,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-12-06 21:02:22,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 204. [2021-12-06 21:02:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.3819095477386936) internal successors, (275), 199 states have internal predecessors, (275), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:02:22,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 281 transitions. [2021-12-06 21:02:22,242 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 281 transitions. Word has length 18 [2021-12-06 21:02:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:22,243 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 281 transitions. [2021-12-06 21:02:22,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:22,243 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 281 transitions. [2021-12-06 21:02:22,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 21:02:22,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:22,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:22,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 21:02:22,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:22,445 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:02:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash 638802544, now seen corresponding path program 1 times [2021-12-06 21:02:22,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:22,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591894384] [2021-12-06 21:02:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:22,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:22,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:22,450 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:22,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 21:02:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:22,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:02:22,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:26,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:26,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:26,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591894384] [2021-12-06 21:02:26,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591894384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:26,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:26,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:02:26,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296819289] [2021-12-06 21:02:26,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:26,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:02:26,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:26,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:02:26,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=6, Unknown=1, NotChecked=0, Total=12 [2021-12-06 21:02:26,463 INFO L87 Difference]: Start difference. First operand 204 states and 281 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:26,748 INFO L93 Difference]: Finished difference Result 329 states and 444 transitions. [2021-12-06 21:02:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:02:26,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 21:02:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:26,751 INFO L225 Difference]: With dead ends: 329 [2021-12-06 21:02:26,751 INFO L226 Difference]: Without dead ends: 320 [2021-12-06 21:02:26,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=10, Unknown=1, NotChecked=0, Total=20 [2021-12-06 21:02:26,752 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 159 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:26,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 774 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2021-12-06 21:02:26,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-12-06 21:02:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 204. [2021-12-06 21:02:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.3768844221105527) internal successors, (274), 199 states have internal predecessors, (274), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:02:26,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 280 transitions. [2021-12-06 21:02:26,763 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 280 transitions. Word has length 19 [2021-12-06 21:02:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:26,764 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 280 transitions. [2021-12-06 21:02:26,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:26,764 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 280 transitions. [2021-12-06 21:02:26,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 21:02:26,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:26,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:26,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-06 21:02:26,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:26,967 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:02:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash 433780882, now seen corresponding path program 1 times [2021-12-06 21:02:26,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:26,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137352411] [2021-12-06 21:02:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:26,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:26,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:26,973 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:26,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 21:02:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:27,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 21:02:27,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:30,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:30,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:30,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137352411] [2021-12-06 21:02:30,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137352411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:30,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:30,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:02:30,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320099607] [2021-12-06 21:02:30,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:30,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:02:30,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:30,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:02:30,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:02:30,288 INFO L87 Difference]: Start difference. First operand 204 states and 280 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:32,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:02:32,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:32,962 INFO L93 Difference]: Finished difference Result 238 states and 323 transitions. [2021-12-06 21:02:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:02:33,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 21:02:33,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:33,081 INFO L225 Difference]: With dead ends: 238 [2021-12-06 21:02:33,081 INFO L226 Difference]: Without dead ends: 229 [2021-12-06 21:02:33,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:02:33,082 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 28 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:33,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1051 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 57 Unchecked, 2.4s Time] [2021-12-06 21:02:33,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-06 21:02:33,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 208. [2021-12-06 21:02:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.3842364532019704) internal successors, (281), 203 states have internal predecessors, (281), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:02:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 287 transitions. [2021-12-06 21:02:33,090 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 287 transitions. Word has length 19 [2021-12-06 21:02:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:33,090 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 287 transitions. [2021-12-06 21:02:33,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 287 transitions. [2021-12-06 21:02:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 21:02:33,091 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:33,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:33,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 21:02:33,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:33,293 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:02:33,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:33,295 INFO L85 PathProgramCache]: Analyzing trace with hash 431933840, now seen corresponding path program 1 times [2021-12-06 21:02:33,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:33,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668127679] [2021-12-06 21:02:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:33,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:33,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:33,300 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:33,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 21:02:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:34,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 21:02:34,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:37,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:37,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:37,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668127679] [2021-12-06 21:02:37,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668127679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:37,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:37,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:02:37,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180277229] [2021-12-06 21:02:37,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:37,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:02:37,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:02:37,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:02:37,607 INFO L87 Difference]: Start difference. First operand 208 states and 287 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:42,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:02:46,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:02:48,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:02:49,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:02:51,886 WARN L534 Checker$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 [] [2021-12-06 21:02:54,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:02:56,030 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:02:58,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:00,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:02,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:06,674 WARN L534 Checker$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 [] [2021-12-06 21:03:08,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:10,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:12,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:15,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:17,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:21,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:23,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:26,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:28,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:30,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:32,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:35,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:37,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:38,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:41,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:43,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:45,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:47,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:50,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:52,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:54,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:03:56,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:01,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:03,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:04,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:06,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:08,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:11,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:13,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:15,200 WARN L534 Checker$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 [] [2021-12-06 21:04:17,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:19,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:21,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:23,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:25,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:27,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:29,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:31,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:33,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:33,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:04:33,661 INFO L93 Difference]: Finished difference Result 225 states and 309 transitions. [2021-12-06 21:04:33,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:04:33,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 21:04:33,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:04:33,701 INFO L225 Difference]: With dead ends: 225 [2021-12-06 21:04:33,701 INFO L226 Difference]: Without dead ends: 222 [2021-12-06 21:04:33,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:04:33,705 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 303 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 38 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 38 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 115.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:04:33,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 1057 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 38 Unknown, 35 Unchecked, 115.0s Time] [2021-12-06 21:04:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-06 21:04:33,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 210. [2021-12-06 21:04:33,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.3804878048780487) internal successors, (283), 205 states have internal predecessors, (283), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:04:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 289 transitions. [2021-12-06 21:04:33,713 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 289 transitions. Word has length 19 [2021-12-06 21:04:33,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:04:33,713 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 289 transitions. [2021-12-06 21:04:33,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 289 transitions. [2021-12-06 21:04:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 21:04:33,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:04:33,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:04:33,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 21:04:33,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:04:33,916 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:04:33,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:04:33,917 INFO L85 PathProgramCache]: Analyzing trace with hash -945367497, now seen corresponding path program 1 times [2021-12-06 21:04:33,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:04:33,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273283374] [2021-12-06 21:04:33,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:33,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:04:33,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:04:33,921 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:04:33,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 21:04:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:34,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:04:34,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:04:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:04:36,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:04:36,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:04:36,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273283374] [2021-12-06 21:04:36,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273283374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:04:36,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:04:36,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:04:36,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960996035] [2021-12-06 21:04:36,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:04:36,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:04:36,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:04:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:04:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:04:36,955 INFO L87 Difference]: Start difference. First operand 210 states and 289 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:36,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:04:36,965 INFO L93 Difference]: Finished difference Result 395 states and 539 transitions. [2021-12-06 21:04:36,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:04:36,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 21:04:36,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:04:36,967 INFO L225 Difference]: With dead ends: 395 [2021-12-06 21:04:36,967 INFO L226 Difference]: Without dead ends: 200 [2021-12-06 21:04:36,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:04:36,969 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 0 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:04:36,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1030 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2021-12-06 21:04:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-06 21:04:36,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-12-06 21:04:36,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.3435897435897435) internal successors, (262), 195 states have internal predecessors, (262), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:04:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 268 transitions. [2021-12-06 21:04:36,978 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 268 transitions. Word has length 20 [2021-12-06 21:04:36,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:04:36,978 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 268 transitions. [2021-12-06 21:04:36,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:36,978 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 268 transitions. [2021-12-06 21:04:36,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 21:04:36,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:04:36,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:04:36,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 21:04:37,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:04:37,180 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:04:37,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:04:37,180 INFO L85 PathProgramCache]: Analyzing trace with hash -366267549, now seen corresponding path program 1 times [2021-12-06 21:04:37,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:04:37,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228015407] [2021-12-06 21:04:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:37,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:04:37,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:04:37,182 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:04:37,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 21:04:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:37,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 21:04:37,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:04:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:04:41,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:04:41,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:04:41,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228015407] [2021-12-06 21:04:41,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228015407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:04:41,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:04:41,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:04:41,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980312951] [2021-12-06 21:04:41,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:04:41,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:04:41,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:04:41,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:04:41,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:04:41,544 INFO L87 Difference]: Start difference. First operand 200 states and 268 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:41,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:04:41,557 INFO L93 Difference]: Finished difference Result 224 states and 298 transitions. [2021-12-06 21:04:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:04:41,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 21:04:41,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:04:41,559 INFO L225 Difference]: With dead ends: 224 [2021-12-06 21:04:41,559 INFO L226 Difference]: Without dead ends: 213 [2021-12-06 21:04:41,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:04:41,560 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 94 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:04:41,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 1141 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2021-12-06 21:04:41,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-06 21:04:41,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 198. [2021-12-06 21:04:41,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.3367875647668395) internal successors, (258), 193 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:04:41,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 264 transitions. [2021-12-06 21:04:41,569 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 264 transitions. Word has length 21 [2021-12-06 21:04:41,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:04:41,569 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 264 transitions. [2021-12-06 21:04:41,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:41,570 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 264 transitions. [2021-12-06 21:04:41,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 21:04:41,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:04:41,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:04:41,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-06 21:04:41,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:04:41,772 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:04:41,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:04:41,773 INFO L85 PathProgramCache]: Analyzing trace with hash -29840134, now seen corresponding path program 1 times [2021-12-06 21:04:41,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:04:41,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489866321] [2021-12-06 21:04:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:41,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:04:41,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:04:41,778 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:04:41,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 21:04:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:42,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:04:42,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:04:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:04:44,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:04:44,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:04:44,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489866321] [2021-12-06 21:04:44,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489866321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:04:44,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:04:44,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:04:44,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709822246] [2021-12-06 21:04:44,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:04:44,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:04:44,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:04:44,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:04:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:04:44,300 INFO L87 Difference]: Start difference. First operand 198 states and 264 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:44,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:04:44,658 INFO L93 Difference]: Finished difference Result 324 states and 428 transitions. [2021-12-06 21:04:44,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:04:44,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 21:04:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:04:44,661 INFO L225 Difference]: With dead ends: 324 [2021-12-06 21:04:44,661 INFO L226 Difference]: Without dead ends: 314 [2021-12-06 21:04:44,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:04:44,663 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 144 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:04:44,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 745 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2021-12-06 21:04:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-12-06 21:04:44,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 198. [2021-12-06 21:04:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.3316062176165804) internal successors, (257), 193 states have internal predecessors, (257), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:04:44,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2021-12-06 21:04:44,673 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 21 [2021-12-06 21:04:44,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:04:44,673 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2021-12-06 21:04:44,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2021-12-06 21:04:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 21:04:44,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:04:44,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:04:44,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 21:04:44,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:04:44,875 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:04:44,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:04:44,877 INFO L85 PathProgramCache]: Analyzing trace with hash 27418168, now seen corresponding path program 1 times [2021-12-06 21:04:44,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:04:44,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692589557] [2021-12-06 21:04:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:44,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:04:44,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:04:44,880 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:04:44,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 21:04:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:45,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 21:04:45,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:04:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:04:47,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:04:47,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:04:47,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692589557] [2021-12-06 21:04:47,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692589557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:04:47,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:04:47,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:04:47,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818673367] [2021-12-06 21:04:47,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:04:47,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:04:47,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:04:47,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:04:47,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:04:47,463 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:50,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:54,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:57,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:59,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:01,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:04,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:06,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:06,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:05:06,538 INFO L93 Difference]: Finished difference Result 210 states and 274 transitions. [2021-12-06 21:05:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:05:06,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 21:05:06,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:05:06,574 INFO L225 Difference]: With dead ends: 210 [2021-12-06 21:05:06,574 INFO L226 Difference]: Without dead ends: 207 [2021-12-06 21:05:06,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:05:06,575 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 256 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:05:06,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 1016 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 6 Unknown, 0 Unchecked, 17.5s Time] [2021-12-06 21:05:06,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-06 21:05:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2021-12-06 21:05:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.3316062176165804) internal successors, (257), 193 states have internal predecessors, (257), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:05:06,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2021-12-06 21:05:06,583 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 21 [2021-12-06 21:05:06,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:05:06,583 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2021-12-06 21:05:06,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:06,583 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2021-12-06 21:05:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 21:05:06,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:05:06,584 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:05:06,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 21:05:06,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:05:06,784 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:05:06,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:05:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2086387867, now seen corresponding path program 1 times [2021-12-06 21:05:06,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:05:06,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110181200] [2021-12-06 21:05:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:06,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:05:06,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:05:06,786 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:05:06,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 21:05:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:07,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 21:05:07,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:05:16,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:05:16,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:05:16,621 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:05:16,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110181200] [2021-12-06 21:05:16,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110181200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:05:16,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:05:16,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:05:16,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261233604] [2021-12-06 21:05:16,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:05:16,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:05:16,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:05:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:05:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:05:16,624 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:22,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:24,829 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:28,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:30,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:32,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:35,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:37,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:39,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:40,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:41,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:44,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:46,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:48,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:50,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:51,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:53,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:55,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:59,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:03,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:06,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:08,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:10,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:13,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:16,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:18,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:21,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:25,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:26,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:28,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:31,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:33,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:35,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:37,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:39,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:41,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:41,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:06:41,668 INFO L93 Difference]: Finished difference Result 221 states and 290 transitions. [2021-12-06 21:06:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:06:41,702 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-06 21:06:41,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:06:41,704 INFO L225 Difference]: With dead ends: 221 [2021-12-06 21:06:41,704 INFO L226 Difference]: Without dead ends: 211 [2021-12-06 21:06:41,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:06:41,705 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 392 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 82.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:06:41,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 1732 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 24 Unknown, 90 Unchecked, 82.5s Time] [2021-12-06 21:06:41,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-06 21:06:41,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 197. [2021-12-06 21:06:41,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 192 states have (on average 1.328125) internal successors, (255), 192 states have internal predecessors, (255), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:06:41,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 261 transitions. [2021-12-06 21:06:41,717 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 261 transitions. Word has length 23 [2021-12-06 21:06:41,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:06:41,717 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 261 transitions. [2021-12-06 21:06:41,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 261 transitions. [2021-12-06 21:06:41,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 21:06:41,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:06:41,719 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:06:41,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-06 21:06:41,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:06:41,920 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:06:41,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:41,921 INFO L85 PathProgramCache]: Analyzing trace with hash -807562720, now seen corresponding path program 1 times [2021-12-06 21:06:41,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:06:41,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879151767] [2021-12-06 21:06:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:41,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:06:41,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:06:41,925 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:06:41,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 21:06:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:42,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 21:06:42,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:06:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:47,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:06:47,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:06:47,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879151767] [2021-12-06 21:06:47,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879151767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:47,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:47,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:06:47,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018808920] [2021-12-06 21:06:47,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:47,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:06:47,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:06:47,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:06:47,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:06:47,607 INFO L87 Difference]: Start difference. First operand 197 states and 261 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:06:47,686 INFO L93 Difference]: Finished difference Result 317 states and 415 transitions. [2021-12-06 21:06:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:06:47,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-06 21:06:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:06:47,688 INFO L225 Difference]: With dead ends: 317 [2021-12-06 21:06:47,689 INFO L226 Difference]: Without dead ends: 197 [2021-12-06 21:06:47,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:06:47,690 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 224 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:06:47,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 1241 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2021-12-06 21:06:47,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-06 21:06:47,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-12-06 21:06:47,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 192 states have (on average 1.3229166666666667) internal successors, (254), 192 states have internal predecessors, (254), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:06:47,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 260 transitions. [2021-12-06 21:06:47,698 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 260 transitions. Word has length 25 [2021-12-06 21:06:47,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:06:47,699 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 260 transitions. [2021-12-06 21:06:47,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:47,699 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 260 transitions. [2021-12-06 21:06:47,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 21:06:47,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:06:47,699 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:06:47,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 21:06:47,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:06:47,900 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:06:47,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash 534043295, now seen corresponding path program 1 times [2021-12-06 21:06:47,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:06:47,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73513258] [2021-12-06 21:06:47,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:47,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:06:47,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:06:47,902 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:06:47,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 21:06:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:48,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:06:48,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:06:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:50,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:06:50,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:06:50,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73513258] [2021-12-06 21:06:50,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73513258] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:50,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:50,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:06:50,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696793672] [2021-12-06 21:06:50,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:50,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:06:50,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:06:50,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:06:50,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:06:50,765 INFO L87 Difference]: Start difference. First operand 197 states and 260 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:53,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:06:53,156 INFO L93 Difference]: Finished difference Result 447 states and 586 transitions. [2021-12-06 21:06:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:06:53,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-06 21:06:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:06:53,158 INFO L225 Difference]: With dead ends: 447 [2021-12-06 21:06:53,158 INFO L226 Difference]: Without dead ends: 272 [2021-12-06 21:06:53,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:06:53,160 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 143 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:06:53,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 546 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2021-12-06 21:06:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-12-06 21:06:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 156. [2021-12-06 21:06:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.2649006622516556) internal successors, (191), 151 states have internal predecessors, (191), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:06:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 197 transitions. [2021-12-06 21:06:53,169 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 197 transitions. Word has length 25 [2021-12-06 21:06:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:06:53,169 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 197 transitions. [2021-12-06 21:06:53,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 197 transitions. [2021-12-06 21:06:53,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 21:06:53,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:06:53,170 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:06:53,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 21:06:53,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:06:53,371 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:06:53,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:53,371 INFO L85 PathProgramCache]: Analyzing trace with hash -253935603, now seen corresponding path program 1 times [2021-12-06 21:06:53,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:06:53,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384932871] [2021-12-06 21:06:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:53,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:06:53,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:06:53,372 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:06:53,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 21:06:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:53,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 21:06:53,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:06:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:59,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:06:59,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:06:59,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384932871] [2021-12-06 21:06:59,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384932871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:59,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:59,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:06:59,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036251631] [2021-12-06 21:06:59,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:59,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:06:59,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:06:59,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:06:59,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:06:59,453 INFO L87 Difference]: Start difference. First operand 156 states and 197 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:05,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:07:10,281 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:07:12,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:07:14,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:07:17,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:07:18,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:07:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:07:18,773 INFO L93 Difference]: Finished difference Result 166 states and 205 transitions. [2021-12-06 21:07:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:07:18,812 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-06 21:07:18,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:07:18,814 INFO L225 Difference]: With dead ends: 166 [2021-12-06 21:07:18,814 INFO L226 Difference]: Without dead ends: 153 [2021-12-06 21:07:18,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:07:18,815 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 196 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:07:18,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 1477 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 4 Unknown, 10 Unchecked, 15.1s Time] [2021-12-06 21:07:18,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-06 21:07:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2021-12-06 21:07:18,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.2689655172413794) internal successors, (184), 145 states have internal predecessors, (184), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:07:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 190 transitions. [2021-12-06 21:07:18,825 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 190 transitions. Word has length 25 [2021-12-06 21:07:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:07:18,825 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 190 transitions. [2021-12-06 21:07:18,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 190 transitions. [2021-12-06 21:07:18,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 21:07:18,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:07:18,826 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:07:18,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 21:07:19,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:07:19,027 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:07:19,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:07:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1568626947, now seen corresponding path program 1 times [2021-12-06 21:07:19,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:07:19,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052232229] [2021-12-06 21:07:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:07:19,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:07:19,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:07:19,032 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:07:19,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 21:07:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:20,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 21:07:20,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:07:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:07:25,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:07:25,496 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:07:25,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052232229] [2021-12-06 21:07:25,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052232229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:07:25,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:07:25,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:07:25,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060062285] [2021-12-06 21:07:25,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:07:25,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:07:25,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:07:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:07:25,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:07:25,499 INFO L87 Difference]: Start difference. First operand 150 states and 190 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:25,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:07:25,504 INFO L93 Difference]: Finished difference Result 159 states and 199 transitions. [2021-12-06 21:07:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:07:25,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-06 21:07:25,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:07:25,505 INFO L225 Difference]: With dead ends: 159 [2021-12-06 21:07:25,505 INFO L226 Difference]: Without dead ends: 39 [2021-12-06 21:07:25,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:07:25,507 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:07:25,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 169 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2021-12-06 21:07:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-06 21:07:25,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-06 21:07:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2021-12-06 21:07:25,511 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 26 [2021-12-06 21:07:25,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:07:25,511 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2021-12-06 21:07:25,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:25,511 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2021-12-06 21:07:25,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 21:07:25,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:07:25,512 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:07:25,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 21:07:25,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:07:25,714 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:07:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:07:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash -342781506, now seen corresponding path program 1 times [2021-12-06 21:07:25,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:07:25,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818943048] [2021-12-06 21:07:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:07:25,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:07:25,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:07:25,718 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:07:25,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 21:07:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:25,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 21:07:25,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:07:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:07:32,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:07:32,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:07:32,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818943048] [2021-12-06 21:07:32,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818943048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:07:32,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:07:32,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:07:32,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128853286] [2021-12-06 21:07:32,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:07:32,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:07:32,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:07:32,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:07:32,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:07:32,889 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:33,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:07:33,339 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2021-12-06 21:07:33,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:07:33,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 21:07:33,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:07:33,343 INFO L225 Difference]: With dead ends: 62 [2021-12-06 21:07:33,343 INFO L226 Difference]: Without dead ends: 49 [2021-12-06 21:07:33,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:07:33,345 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:07:33,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 146 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2021-12-06 21:07:33,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-06 21:07:33,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-12-06 21:07:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.125) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-12-06 21:07:33,351 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 28 [2021-12-06 21:07:33,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:07:33,351 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-12-06 21:07:33,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:33,352 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-12-06 21:07:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 21:07:33,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:07:33,352 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:07:33,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-06 21:07:33,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:07:33,554 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:07:33,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:07:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2117788868, now seen corresponding path program 1 times [2021-12-06 21:07:33,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:07:33,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926099388] [2021-12-06 21:07:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:07:33,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:07:33,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:07:33,559 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:07:33,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 21:07:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:34,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 21:07:34,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:07:38,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2021-12-06 21:07:41,213 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:07:41,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 81 [2021-12-06 21:07:41,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2021-12-06 21:07:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:07:49,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:07:49,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:07:49,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926099388] [2021-12-06 21:07:49,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926099388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:07:49,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:07:49,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 21:07:49,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401689654] [2021-12-06 21:07:49,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:07:49,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 21:07:49,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:07:49,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 21:07:49,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:07:49,054 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:02,506 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 [] [2021-12-06 21:08:02,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:02,963 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2021-12-06 21:08:02,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:08:02,964 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 21:08:02,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:02,965 INFO L225 Difference]: With dead ends: 60 [2021-12-06 21:08:02,965 INFO L226 Difference]: Without dead ends: 57 [2021-12-06 21:08:02,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-12-06 21:08:02,966 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 93 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:02,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 234 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 1 Unknown, 32 Unchecked, 6.7s Time] [2021-12-06 21:08:02,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-06 21:08:02,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2021-12-06 21:08:02,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:02,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-12-06 21:08:02,973 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 28 [2021-12-06 21:08:02,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:02,973 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-12-06 21:08:02,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:02,973 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-12-06 21:08:02,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 21:08:02,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:02,974 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:08:03,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-06 21:08:03,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:08:03,175 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:03,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash -619930575, now seen corresponding path program 1 times [2021-12-06 21:08:03,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:08:03,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908060393] [2021-12-06 21:08:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:03,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:08:03,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:08:03,180 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:08:03,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 21:08:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:04,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:08:04,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:08:10,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:08:10,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:08:10,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908060393] [2021-12-06 21:08:10,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908060393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:10,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:10,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:08:10,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241998140] [2021-12-06 21:08:10,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:10,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:08:10,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:08:10,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:08:10,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:08:10,328 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:10,334 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2021-12-06 21:08:10,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:08:10,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-06 21:08:10,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:10,335 INFO L225 Difference]: With dead ends: 68 [2021-12-06 21:08:10,336 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 21:08:10,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:08:10,337 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:10,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 112 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2021-12-06 21:08:10,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 21:08:10,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-06 21:08:10,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-12-06 21:08:10,345 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 29 [2021-12-06 21:08:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:10,345 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-12-06 21:08:10,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2021-12-06 21:08:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 21:08:10,346 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:10,346 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:08:10,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-06 21:08:10,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:08:10,548 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:10,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:10,549 INFO L85 PathProgramCache]: Analyzing trace with hash -141436143, now seen corresponding path program 1 times [2021-12-06 21:08:10,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:08:10,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320368113] [2021-12-06 21:08:10,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:10,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:08:10,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:08:10,553 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:08:10,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 21:08:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:11,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 21:08:11,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:14,346 INFO L388 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 13 treesize of output 9 [2021-12-06 21:08:35,481 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_fabs_double_~#sh_u~3#1.base_12| (_ BitVec 32)) (|ULTIMATE.start_fabs_double_~high~0#1| (_ BitVec 32))) (let ((.cse2 (select |c_#memory_int| |v_ULTIMATE.start_fabs_double_~#sh_u~3#1.base_12|))) (let ((.cse1 (select .cse2 (_ bv4 32)))) (and (= |c_ULTIMATE.start___ieee754_pow_~z~1#1| (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) (let ((.cse0 (concat .cse1 (select .cse2 (_ bv0 32))))) (fp ((_ extract 63 63) .cse0) ((_ extract 62 52) .cse0) ((_ extract 51 0) .cse0))))) (= (bvand (_ bv2147483647 32) |ULTIMATE.start_fabs_double_~high~0#1|) .cse1))))) is different from false [2021-12-06 21:08:57,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-12-06 21:08:57,153 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-12-06 21:08:57,154 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:08:57,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320368113] [2021-12-06 21:08:57,154 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-12-06 21:08:57,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [962108961] [2021-12-06 21:08:57,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:57,155 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 21:08:57,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 21:08:57,155 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 21:08:57,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-12-06 21:08:57,263 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.declareFun(Scriptor.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.declareFun(WrapperScript.java:137) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.declareFun(WrapperScript.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.declareFun(HistoryRecordingScript.java:95) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.declareFun(ManagedScript.java:172) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.variables.ProgramVarUtils.constructConstantForAuxVar(ProgramVarUtils.java:120) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.computeClosedFormula(UnmodifiableTransFormula.java:172) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:274) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.decoupleArrayValues(TransFormulaUtils.java:1226) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:388) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 43 more [2021-12-06 21:08:57,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060701061] [2021-12-06 21:08:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:57,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:57,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:57,265 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:57,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 21:08:57,316 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by |v_skolemized_q#valueAsBitvector_155| at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.variables.ProgramVarUtils.constructConstantForAuxVar(ProgramVarUtils.java:119) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.computeClosedFormula(UnmodifiableTransFormula.java:172) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:274) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.decoupleArrayValues(TransFormulaUtils.java:1226) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:388) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-12-06 21:08:57,317 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:57,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-12-06 21:08:57,317 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-12-06 21:08:57,318 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-12-06 21:08:57,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 21:08:57,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 21:08:57,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-12-06 21:08:57,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-06 21:08:57,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f36b922-a913-40eb-967b-fb2f36bf1975/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:08:57,933 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:08:57,935 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 21:08:57,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 09:08:57 BoogieIcfgContainer [2021-12-06 21:08:57,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 21:08:57,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 21:08:57,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 21:08:57,953 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 21:08:57,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:02:00" (3/4) ... [2021-12-06 21:08:57,956 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 21:08:57,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 21:08:57,957 INFO L158 Benchmark]: Toolchain (without parser) took 476300.77ms. Allocated memory was 54.5MB in the beginning and 79.7MB in the end (delta: 25.2MB). Free memory was 30.7MB in the beginning and 43.9MB in the end (delta: -13.2MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2021-12-06 21:08:57,957 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 54.5MB. Free memory was 35.5MB in the beginning and 35.5MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:08:57,957 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.40ms. Allocated memory was 54.5MB in the beginning and 79.7MB in the end (delta: 25.2MB). Free memory was 30.6MB in the beginning and 50.2MB in the end (delta: -19.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-12-06 21:08:57,957 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.47ms. Allocated memory is still 79.7MB. Free memory was 50.2MB in the beginning and 45.6MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 21:08:57,958 INFO L158 Benchmark]: Boogie Preprocessor took 63.06ms. Allocated memory is still 79.7MB. Free memory was 45.6MB in the beginning and 56.3MB in the end (delta: -10.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-12-06 21:08:57,958 INFO L158 Benchmark]: RCFGBuilder took 58568.63ms. Allocated memory is still 79.7MB. Free memory was 56.3MB in the beginning and 49.0MB in the end (delta: 7.3MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2021-12-06 21:08:57,958 INFO L158 Benchmark]: TraceAbstraction took 417262.87ms. Allocated memory is still 79.7MB. Free memory was 48.6MB in the beginning and 44.6MB in the end (delta: 4.0MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2021-12-06 21:08:57,958 INFO L158 Benchmark]: Witness Printer took 3.34ms. Allocated memory is still 79.7MB. Free memory is still 43.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:08:57,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 54.5MB. Free memory was 35.5MB in the beginning and 35.5MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.40ms. Allocated memory was 54.5MB in the beginning and 79.7MB in the end (delta: 25.2MB). Free memory was 30.6MB in the beginning and 50.2MB in the end (delta: -19.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.47ms. Allocated memory is still 79.7MB. Free memory was 50.2MB in the beginning and 45.6MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.06ms. Allocated memory is still 79.7MB. Free memory was 45.6MB in the beginning and 56.3MB in the end (delta: -10.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * RCFGBuilder took 58568.63ms. Allocated memory is still 79.7MB. Free memory was 56.3MB in the beginning and 49.0MB in the end (delta: 7.3MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * TraceAbstraction took 417262.87ms. Allocated memory is still 79.7MB. Free memory was 48.6MB in the beginning and 44.6MB in the end (delta: 4.0MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * Witness Printer took 3.34ms. Allocated memory is still 79.7MB. Free memory is still 43.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 593]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L40-L42] static const double two54_scalbn = 1.80143985094819840000e+16, twom54_scalbn = 5.55111512312578270212e-17, huge_scalbn = 1.0e+300, tiny_scalbn = 1.0e-300; [L95] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L222-L261] static const double bp_pow[] = { 1.0, 1.5, }, dp_h_pow[] = { 0.0, 5.84962487220764160156e-01, }, dp_l_pow[] = { 0.0, 1.35003920212974897128e-08, }, zero_pow = 0.0, one_pow = 1.0, two_pow = 2.0, two53_pow = 9007199254740992.0, huge_pow = 1.0e300, tiny_pow = 1.0e-300, L1_pow = 5.99999999999994648725e-01, L2_pow = 4.28571428578550184252e-01, L3_pow = 3.33333329818377432918e-01, L4_pow = 2.72728123808534006489e-01, L5_pow = 2.30660745775561754067e-01, L6_pow = 2.06975017800338417784e-01, P1_pow = 1.66666666666666019037e-01, P2_pow = -2.77777777770155933842e-03, P3_pow = 6.61375632143793436117e-05, P4_pow = -1.65339022054652515390e-06, P5_pow = 4.13813679705723846039e-08, lg2_pow = 6.93147180559945286227e-01, lg2_h_pow = 6.93147182464599609375e-01, lg2_l_pow = -1.90465429995776804525e-09, ovt_pow = 8.0085662595372944372e-0017, cp_pow = 9.61796693925975554329e-01, cp_h_pow = 9.61796700954437255859e-01, cp_l_pow = -7.02846165095275826516e-09, ivln2_pow = 1.44269504088896338700e+00, ivln2_h_pow = 1.44269502162933349609e+00, ivln2_l_pow = 1.92596299112661746887e-08; [L584] double x = 1.0 / 0.0; [L585] double y = __VERIFIER_nondet_double(); [L587] COND TRUE y < 0.0 [L589] CALL, EXPR __ieee754_pow(x, y) [L264] double z, ax, z_h, z_l, p_h, p_l; [L265] double y1, t1, t2, r, s, t, u, v, w; [L266] __int32_t i, j, k, yisint, n; [L267] __int32_t hx, hy, ix, iy; [L268] __uint32_t lx, ly; [L271] ieee_double_shape_type ew_u; [L272] ew_u.value = (x) [L273] EXPR ew_u.parts.msw [L273] (hx) = ew_u.parts.msw [L274] EXPR ew_u.parts.lsw [L274] (lx) = ew_u.parts.lsw [L277] ieee_double_shape_type ew_u; [L278] ew_u.value = (y) [L279] EXPR ew_u.parts.msw [L279] (hy) = ew_u.parts.msw [L280] EXPR ew_u.parts.lsw [L280] (ly) = ew_u.parts.lsw [L282] ix = hx & 0x7fffffff [L283] iy = hy & 0x7fffffff [L285] COND FALSE !((iy | ly) == 0) [L288-L289] COND FALSE !(ix > 0x7ff00000 || ((ix == 0x7ff00000) && (lx != 0)) || iy > 0x7ff00000 || ((iy == 0x7ff00000) && (ly != 0))) [L295] yisint = 0 [L296] COND FALSE !(hx < 0) [L313] COND FALSE !(ly == 0) [L336] CALL, EXPR fabs_double(x) [L207] __uint32_t high; [L209] ieee_double_shape_type gh_u; [L210] gh_u.value = (x) [L211] EXPR gh_u.parts.msw [L211] (high) = gh_u.parts.msw [L214] ieee_double_shape_type sh_u; [L215] sh_u.value = (x) [L216] sh_u.parts.msw = (high & 0x7fffffff) [L217] EXPR sh_u.value [L217] (x) = sh_u.value [L219] return x; [L336] RET, EXPR fabs_double(x) [L336] ax = fabs_double(x) [L338] COND TRUE lx == 0 [L339] COND TRUE ix == 0x7ff00000 || ix == 0 || ix == 0x3ff00000 [L340] z = ax [L341] COND TRUE hy < 0 [L342] z = one_pow / z [L343] COND FALSE !(hx < 0) [L349] return z; [L589] RET, EXPR __ieee754_pow(x, y) [L589] double res = __ieee754_pow(x, y); [L592] EXPR res == 0.0 && __signbit_double(res) == 0 [L592] CALL, EXPR __signbit_double(res) [L565] __uint32_t msw; [L568] ieee_double_shape_type gh_u; [L569] gh_u.value = (x) [L570] EXPR gh_u.parts.msw [L570] (msw) = gh_u.parts.msw [L573] return (msw & 0x80000000) != 0; [L592] RET, EXPR __signbit_double(res) [L592] EXPR res == 0.0 && __signbit_double(res) == 0 [L592] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L593] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 209 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 417.2s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 262.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 75 mSolverCounterUnknown, 2187 SdHoareTripleChecker+Valid, 241.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2175 mSDsluCounter, 17889 SdHoareTripleChecker+Invalid, 230.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 716 IncrementalHoareTripleChecker+Unchecked, 13647 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 326 IncrementalHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 4242 mSDtfsCounter, 326 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 312 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 58.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=210occurred in iteration=8, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 439 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 9.3s SatisfiabilityAnalysisTime, 138.1s InterpolantComputationTime, 453 NumberOfCodeBlocks, 453 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 401 ConstructedInterpolants, 169 QuantifiedInterpolants, 4255 SizeOfPredicates, 146 NumberOfNonLiveVariables, 3041 ConjunctsInSsa, 259 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN